ATMOSPHERIC REMOTE SENSING USING SPACE-BASED RADIO NAVIGATION SATELLITES (2009)
Mohd Hafiz Yahya, Md Nor Kamarudin, Samsung Lim, Chris Rizos
Given that agricultural cycles, human well-being, economic growth and many societal activities are affected by climate variability, a greater understanding of critical atmospheric parameters (such as...
THE NAMURU RECEIVER AS DEVELOPMENT PLATFORM FOR SPACEBORNE GNSS APPLICATIONS (2009)
Andreas Grillenberger, Rodrigo Rivas, Markus Markgraf, Peter Mumford, Kevin Parkinson, Chris Rizos
GPS is a well established navigation system in current spaceflight missions. Affordable GPS receivers for small satellite and sounding rocket missions are usually based on Commercial Off The Shelf...
THE POTENTIAL OF GLOBAL POSITIONING SYSTEM IN WEATHER AND ENVIRONMENTAL STUDIES (2009)
Mohd Hafiz Yahya, Md Nor Kamarudin, Samsung Lim, Chris Rizos
ABSTRACT: Malaysia is witnessing a rapid growth in the vicinity of urban cities with the construction of large engineering structures (e.g. towers, factories, high-rise condominiums, wide-span...
HOW FAR COULD GPS GO IN MONITORING STRUCTURAL RESPONSE TO WIND EVENTS? (2009)
Chris Rizos, Xiaojing Li, Linlin Ge, Akihito Yoshida
Abstract: Two techniques have been applied increasingly in recent years for monitoring the response of tall buildings to wind: the traditional accelerometer and GPS. The focus of this paper is to...
Time Synchronisation Error and Calibration in Integrated GPS/INS Systems (2009)
Weidong Ding, Jinling Wang, Yong Li, Peter Mumford, Chris Rizos
ABSTRACT- The necessity for precise time synchronisation of measurement data from multiple sensors is widely recognised in the field of GPS/INS integration. Having precise time synchronisation is...
Geometry-Based TCAR Models and Performance Analysis (2009)
Abstract. The paper presents a methodology that combines geometry-based models and geometric constraints for improved three carrier ambiguity resolution (TCAR). First of all, a general modelling...
Charles Toth, Hongxing Sun, Xiankun Wang, Chris Rizos
positioning with GPS, precision orbit determination of GPS/LEO, INS/GPS/image/LiDAR integration, mobile mapping technology, and robust estimation techniques. Since 2003, she has served at the ION...
Abstract The Contribution of GNSS CORS Infrastructure to the Mission of Modern Geodesy (2009)
Geodesy is the science of measuring and mapping the geometry, orientation and gravity field of the Earth including the associated variations with time. Geodesy has also provided the foundation for...
Yong Li, Peter Mumford, Chris Rizos
Abstract- This paper describes a low-cost real-time GPS/INS integrated system based on a field programmable gate array (FPGA) platform and its performance in an urban environment. The system is built...
Satellite-based geodesy (2009)
1. Geodesy and its primary mission According to Helmert’s classical definition, geodesy is the “science of the measurement and mapping of the Earth’s surface ” by direct measurements, such as...
Samsung Lim, Tajul Musa, Chris Rizos
Abstract. The GPS errors can be separated into a frequency-dependent or dispersive component (e.g. the ionospheric delay) and a non-dispersive component (e.g. the tropospheric delay and orbit...
Faisal A. Khan, Chris Rizos, Andrew G. Dempster, Faisal Ahmed
effects and analysis in positioning environment. He holds a M.
Spaceborne radar interferometry for mine subsidence monitoring in Australia (2009)
Linlin Ge, Hsing-chung Chang, Alex Ng, Chris Rizos, A/prof Linlin Ge, Linlin Ge, ...
Land surface deformation can be caused by underground mining activities. The maximum subsidence normally occurs directly above the location of the excavation of the coal seam. In the case where the...
(IAG). He is currently the Vice President of the IAG and (2009)
Faisal A. Khan, Chris Rizos, Andrew G. Dempster, Faisal Ahmed, Khan Ph. D
of research is the analysis of interference effects in positioning environments. He holds an M.Phil degree from UNSW and a B.E. (Electronics) degree from NED UET, Pakistan. He has also gained...
Charles Toth, Hongxing Sun, Xiankun Wang, Chris Rizos
Abstract: The primary objective of the research presented here is to develop high-accuracy and high-reliability geolocation algorithms and to prototype a hybrid system based on multisensor...
GPS/WiFi Real-Time Positioning Device: An Initial Outcome (2009)
Cheong Joon Wayn, Binghao Li, Andrew G. Dempster, Chris Rizos
Abstract: The Global Positioning System (GPS) has a typical outdoor positioning accuracy of up to 15m for civilian users. Thus, it has become a viable method for civilian to carry out coarse...
Xiaojing Li, Akihito Yoshida, Chris Rizos, Linlin Ge, Ryuji Imai
include integration of GPS and other sensors for fullscale structural monitoring and advanced digital signal processing. Dr Akihito YOSHIDA is an Associate Professor at TPU. His research interests...
A Geometric Wireless Location System Utilizing Downlink Pilot Strength Measurement Messages (2009)
Hyung Keun Lee, Hee-sung Kim, Ju-young Shim, Binghao Li, Chris Rizos
Abstract—In this paper, the performance of the wireless-signal map-matching method under a code division multiple access network environment is demonstrated. The wirelss-signal mapmatching method...
802.11 Positioning in the Home (2009)
James Salter, Binghao Li, Daniel Woo, Andrew G. Dempster, Chris Rizos
Abstract—802.11 positioning systems are established as a lowcost solution to positioning within context aware computing. Prior research has mostly focused on either indoor positioning within...
Samsung Lim, Chris Rizos, South Wales
Abstract. The diversification of Global Navigation Satellite Systems (e.g. the current and modernized GPS, the revitalized GLONASS, the planned Galileo and Compass), is an opportunity for engineers,...
Ben Soon (DSO National Laboratories, Singapore) (2009)
Joel Barnes, Jinling Wang, Chris Rizos
This paper analyses flight experiment results to study the overall performance and limitation of GPS/Pseudolite/INS integration approach for aircraft precision approach and landing applications. For...
Radar Interferometry for 3-D Mining Deformation Monitoring (2009)
Hsing-chung Chang, Linlin Ge, Hua Wang, Chris Rizos, Tony Milne
Abstract — Geodetic information of terrain can be measured using remote sensing techniques such as photogrammetry, airborne laser scanner (ALS) and interferometric synthetic aperture radar (InSAR)....
Bridging GPS Outages in the Agricultural Environment using Virtualite Measurements. (2009)
Anthony Cole, South Wales, Jinling Wang, South Wales, Chris Rizos, South Wales, ...
This paper describes the design, analysis and testing of two methods that can be used to bridge GPS outages during an agricultural row cropping operation when using an integrated INS and code-based...
Ben Soon (DSO National Laboratories, Singapore) (2009)
Joel Barnes, Jinling Wang, Chris Rizos
This paper analyses flight trial results to study the overall performance and limitations of a GPS/Pseudolite/INS integration approach for aircraft precision approach and landing applications. For...
Samsung Lim, Chris Rizos, Samsung Lim, Chris Rizos
Improved accuracy and reliability of the real-time user coordinates is expected if GNSS data is processed using the network-RTK technique. Some implementations of conventional network-RTK, e.g....
Urban Monitoring using Persistent Scatterer InSAR and Photogrammetry (2009)
Junghum Yu, Sungheuk Jung, Linlin Ge, Chris Rizos
The purpose of this paper is to monitor deformation due to groundwater extraction in urban area using Persistent Scatterer InSAR (PSInSAR) and Photogrammetry. Theoretically, PSInSAR technique allows...
Clement Ogaja, Xiaojing Li, Chris Rizos, X. Li, C. Rizos
Global Positioning System (GPS) –structural monitoring–RTKAdvances in Structural Monitoring with Global Positioning System
Sigma-Point Kalman Filtering for Tightly Coupled GPS/INS Integration (2009)
Yong Li, Chris Rizos, Jinling Wang, Peter Mumford, Weidong Ding
ABSTRACT The sigma-point Kalman filtering (SPKF) uses a set of sigma points to completely capture the first and second order moments of the apriori random variable. The sigma-points can be mapped...
A hybrid system for navigation in GPSchallenged environments: case study (2009)
Chris Rizos, Charles K. Toth, Andrew G. Dempster, Yong Li, Nonie Politi, ...
applications of GPS since 1985 and over a decade ago established the Satellite Navigation and Positioning (SNAP) group, today the largest and best known academic GPS and wireless location technology...
Yufei Wang, Chris Rizos, Linlin Ge, Craig Roberts
Information resource is one of the valuable commodities in a modern information society. A Remote Sensing (RS) image, one of the important information resources in the geo-information sciences, co...
Abstract Some Results on the Nonparametric Statistics of GPS Signal Scintillation (2008)
Wan-xuan Fu, Shaowei Han, Chris Rizos, Mark Knight, Anthony Finn
The study of ionospheric scintillation belongs to the class of problems dealing with wave diffraction and propagation through a random medium, and its complete theoretical solution is presently not...
Supervisor Professor, Chris Rizos, Assessor Dr, Jinho Choi, Ng Say Khoon, Ronny Tandun (z, ...
� Design and develop a GPS position reporting system � Fabricate working transmitter and receiver prototypes � Design a GUI software for distance and position display
The Namuru Receiver as Development Platform for Spaceborne GNSS Applications (2008)
Grillenberger, Andreas, Rivas, Rodrigo, Markgraf, Markus, Mumford, Peter, Parkinson, Kevin, Rizos, Chris
GPS is a well established navigation system in current spaceflight missions. Affordable GPS receivers for small satellite and sounding rocket missions are usually based on Commercial Off The Shelf...
Chris Rizos, Information Systems, Unsw He
the technology and high precision applications of GPS since 1985, and established over a decade ago the Satellite Navigation and Positioning group at UNSW, today the premier academic GNSS and...
Yong Li, Peter Mumford, Chris Rizos
A real-time GPS/INS integrated system based on a field programmable gate array (FPGA) platform has recently been developed at the Satellite Navigation and Positioning Laboratory, School of Surveying...
C (2006) Indoor positioning techniques based on wireless (2008)
Binghao Li, James Salter, Andrew G. Dempster, Chris Rizos
As well as delivering high speed internet, Wireless LAN (WLAN) can be used as an effective indoor positioning system. It is competitive in terms of both accuracy and cost compared to similar systems....
Joel Barnes, Chris Rizos, Jinling Wang, David Small, Gavin Voigt, Nunzio Gambale
Joel Barnes is a senior researcher within the Satellite
Application of Repeat-pass DInSAR and GIS for Underground Mine Subsidence Monitoring (2008)
Hsing-chung Chang, Linlin Ge, Chris Rizos
Abstract—This research used both ERS and JERS-1 images to investigate the feasibility of differential radar interferometry (DInSAR) for mine subsidence monitoring in the state of New South Wales,...
Can Radar Interferometry Address Commercial Applications? (2008)
Linlin Ge, Yusen Dong, Chris Rizos
This paper addresses a question often asked by industry: can radar interferometry (or InSAR or IFSAR) deliver services on a commercial and/or operational basis? To answer this question two systems...
Assessment of digital elevation models using RTK GPS (2008)
Hsing-chung Chang, Linlin Ge, Chris Rizos
A Digital Elevation Model (DEM) represents the height of a patch of terrain. Accuracies of DEMs vary depending upon the requirements of different applications. DEMs have been applied to a wide range...
Jan P. Weiss, Penina Axelrad, Andrew G. Dempster, Chris Rizos, Samsung Lim
research focuses on ground and airborne platform multipath simulation and analysis as well as antenna and receiver based techniques for multipath detection/mitigation. He received his B.S. in Physics...
Improving Covariance Based Adaptive Estimation for GPS/INS Integration (2008)
Weidong Ding, Jinling Wang, Chris Rizos
It is well known that the uncertainty of the covariance parameters of the process noise (Q) and the observation errors (R) has a significant impact on Kalman filtering performance. Q and R influence...
An Integer Ambiguity Resolution Procedure for GPS/Pseudolite/INS Integration HUNG KYU LEE (2008)
In order to achieve a precise positioning solution from GPS, the carrier phase measurements with correctly resolved integer ambiguities must be used. Based on the integration of GPS with pseudolites...
Xiaojing Li, Gang-ding Peng, Chris Rizos, Linlin Ge, Yukio Tamura, Akihito Yoshida, ...
An integrated system comprising GPS, accelerometer, and optical fibre sensors has been proposed to monitor structural deformation in order to assess the integrity of the structure. The GPS and...
BIOGRAPHY GPS Seismometers: the Implementing Issues (2008)
Linlin Ge, Liwen Dai, Shaowei Han, Chris Rizos, Yuzo Ishikawa, Yasuhiro Yoshida
interests are the interpretation of continuous GPS observations, the integration of GPS and interferometric SAR, and real-time seismology.
Title: Practical issues in using novel sensors in SHM of civil infrastructure:
Joel Barnes, Chris Rizos, Mustafa Kanli, David Small, Gavin Voigt, Nunzio Gambale, ...
GPS has proven to be a useful tool for precision deformation monitoring applications, in both physical geodesy, and more recently for structural engineering. For continuous structural deformation...
I Made, Andi Arsana, Chris Rizos, Clive Schofield
The Democratic Republic of Timor-Leste (East Timor) attained independence on 20 May 2002, marking its separation from Indonesia. As a newly independent country, East Timor is faced with a number of...
Tajul A. Musa, Phd School Surveying, Tajul A. Musa, Samsung Lim, Chris Rizos
interest is in network-based GPS positioning, network stochastic modeling and troposphere study.
Chris is a Fellow of the Australian Institute of Navigation, (2008)
Joel Barnes, Chris Rizos, Jinling Wang, David Small, Gavin Voigt, Nunzio Gambale
of Philosophy in satellite geodesy from the University of Newcastle upon Tyne, UK. Joel has assisted in the development of a Locata (the mobile positioning device) and testing of the “Locata...
AUGMENTING GPS BY GROUND-BASED PSEUDOLITE SIGNALS FOR AIRBORNE SURVEYING APPLICATIONS (2008)
Hung Kyu Lee, Jinling Wang, Chris Rizos, Toshiaki Tsujii
This paper discusses some issues associated with the implementation of ground-based pseudolite augmentation for GPS airborne surveying applications. For instance, not only should two antenna offsets...
HOW CAN MY POSITION ON THE PADDOCK HELP MY FUTURE DIRECTION? Abstract (2008)
GPS is the positioning technology of choice for a wide range of land-based applications. Since the mid-1990s GPS products have been on offer for the 'agricultural market'. GPS on its own...
Chris Rizos, Shaowei Han, Craig Roberts, Xiujiao Han, Hasanuddin Z. Abidin, Ony K. Sug, ...
In the past decade or so there has been increasing interest in the use of permanent, continuously-operating GPS networks, with a small number of continuous networks having
Earthquake Monitoring in Australia Using Satellite Radar Interferometry? (2008)
Linlin Ge, Eric Cheng, Diana Polonska, Chris Rizos, Clive Collins, Craig Smith
Are there any earthquakes in Australia? Although most Australians are not as familiar with earthquakes as citizens in countries such as Japan, there are some quakes on the Australian continent every...
from the Chinese Academy of Surveying and Mapping (2008)
Xiaodong Jia, Yufei Wang, Xiaodong Jia, Chris Rizos
Governing Board of the International GPS Service, and a
BIOGRAPHY A New Data Processing Strategy for Combined GPS/GLONASS Carrier (2008)
Phase-based Positioning, Shaowei Han, Senior Lecturer School, Shaowei Han, Liwen Dai, Chris Rizos
GPS/GLONASS ambiguity resolution and error mitigation methods for carrier phase-based kinematic positioning over short-, medium-, and long-range, GPS attitude determination and the integration of...
Harnessing Location Intelligence to Develop "Killer Apps" 1. Background (2008)
“Killer App ” – a term that has a certain ring to it. Aggressive, suggesting-of-wealth, the modern age’s “Holy Grail”. This term is probably most associated with the 1990s, perhaps having...
Pseudolite Augmentation of GPS (2008)
The Global Positioning System (GPS) is an all-weather, global, satellite-based, roundthe-clock system developed by the U.S. Department of Defense, which since the early 1980s has been available to...
Chris Rizos, Linlin Ge, Hsing-chung Chang, Andrew Nesbitt
A variety of deformation surveying techniques have been extensively used for measuring the pattern of ground subsidence. These include precise levelling, total station traversing, aerial...
A Preliminary Test of the Pseudolite-Based Inverted GPS Positioning in Kinematic Mode (2008)
Toshiaki Tsujii, Masatoshi Harigae, Joel Barnes, Jinling Wang, Chris Rizos
Abstract. Recently some countries have begun conducting feasibility studies and R&D projects on High Altitude Platforms Systems (HAPS). Japan has been investigating the use of an airship system...
Southern California Integrated GPS Network (SCIGN) (2008)
Linlin Ge, Horng-yue Chen, Shaowei Han, Chris Rizos
The dramatic decrease in the cost of Global Positioning System (GPS) receivers has made feasible the establishment of extensive Continuous GPS receiver arrays (CGPS), for the study of crustal...
Preferred correspondent: (2008)
Dong-hwan Hwang, Jeong Lee, Chris Rizos
Due to their complementary features of GPS and INS, the GPS/INS integrated navigation system is increasingly being used for a variety of commercial and military applications. An attitude...
Shahrum Ses, Majid Kadir, Chris Rizos, Chia Wee Tong, Teng Chee Boo, Jalan Semarak
feasibility study on the issues related with introducing a Coordinated Cadastral System (CCS) for Malaysia. One of the several project themes that has been carried out is a study related to the legal...
Yong Li, Yong Li, Jinling Wang, Chris Rizos
formerly the National Aerospace Laboratory), and on a
Integrated Approach of GPS and Pseudolites for Bridge Deformation Monitoring (2008)
Alan Dodson, Xiaolin Meng, Gethin Roberts, Emily Cosser, Joel Barnes, Chris Rizos
It is well known that the accuracy, availability, reliability and integrity of GPS are dependent on the number of satellites in view and their distribution. As a consequence of the satellite...
3D Analysis of Structural Response Monitored Using Integrated GPS and Accelerometer System (2008)
Xiaojing Li, Chris Rizos, Linlin Ge, Eliathamby Ambikairajah
Abstract. Structural responses to severe loads such as due to typhoons and earthquakes are very complicated, with nonlinear and non-stationary characteristics. When external forces are applied to the...
Hung-kyu Lee, Jinling Wang, Chris Rizos
To ensure high accuracy results from an integrated GPS/INS system, the carrier phase obserables have to be used to update the filter’s states. As a prerequisite the integer ambiguities must be...
ABSTRACT Network Adjustment Issues Using Mixed GPS Surveying Techniques (2008)
Modern GPS carrier phase-based survey techniques such as "rapid static " and "stop & go " are fast becoming the standard operational modes for building local...
Wireless-Signal Map-Matching for Non-Line-Of-Sight Error Calibration (2008)
This paper proposes a new wireless-signal map-matching technique for calibrating non-line-of-sight positioning error in urban environments. Compared with conventional map-matching methods that...
(International Association of Geodesy) Special Study (2008)
Linlin Ge, Shaowei Han, B. Sc. (wtusm, M. Sc. (wtusm, Linlin Ge, ...
Group 1.179 "Wide (regional) area modeling for precise satellite positioning”. Chris Rizos holds a B.Surv. and Ph.D., both obtained from The University of New South Wales. Chris is...
Hyung Keun Lee, Chris Rizos, Key Words
1. DGPS. 2. carrier. 3. code. 4. smoothing. Motivated both by the advantage of Hatch filter gain over Kalman-type gain in carrier-smoothed-code filtering, this paper proposes a position-domain Hatch...
and Mapping (WTUSM), P.R. China, and then (2008)
Liwen Dai, Jun Zhang, Chris Rizos, Shaowei Han, Jingling Wang
1998. Since the start of 2000 he has been a fulltime Ph.D. student at UNSW where his current research interests are software and algorithm development for rapid static and kinematic positioning (and...
ABSTRACT COMPARISON OF INTERPOLATION ALGORITHMS IN NETWORK-BASED GPS TECHNIQUES (2008)
Liwen Dai, Shaowei Han, Jinling Wang, Chris Rizos
High precision GPS surveying and navigation applications have been constrained to the short-range case due to the presence of distance-dependent biases in the between-receiver single-differenced...
Chris Rizos, Joel Barnes, David Small, Gavin Voigt, Nunzio Gambale
A real-time positioning technology that can operate indoors and outside anywhere in the world, with sub-cm accuracy, and at low cost, is the ultimate goal for many researchers. GPS can achieve...
Airborne GPS Kinematic Positioning and its Application to Oceanographic Mapping (2008)
Precise, long-range, airborne GPS kinematic positioning requires the use of carrier phase measurements, the data processing of which suffers from the technical challenges of "on-the-fly...
Jinling Wang, Toshiaki Tsujii, Chris Rizos, Liwen Dai, Michael Moore, Toshiaki Tsujii
(UNSW). His current research interests are in modeling, quality control, algorithm and software development for precise positioning using GPS, Glonass, pseudolites and INS. He holds a Ph.D. from the...
School of Avionics and Telecommunication, Hankuk Aviation University, (2008)
Binghao Li, Chris Rizos, Hyung Keun Lee, Hung Kyu Lee
ABSTRACT: For multisenor integration, a primary prerequisite is time synchronization. Methods that have been used in many operational systems are either too expensive, or have inconvenient features,...
A Database Method to Mitigate the NLOS Error in Mobile Phone Positioning (2008)
Binghao Li, Andrew G. Dempster, Chris Rizos, Hyung Keun Lee
Abstract-Non line of sight (NLOS) error is well known to be a major source of error in mobile phone positioning. It is simply caused by the dense buildings blocking the line of sight (LOS)...
NEW GNSS DEVELOPMENTS AND THEIR IMPACT ON CORS SERVICE PROVIDERS (2008)
Chris Rizos, Matt Higgins, Steve Hewitson
The surveying and mapping industry has been revolutionised by the use of Global Navigation Satellite Systems (GNSS) involving satellites, ground reference station infrastructure and user equipment to...
Jonathan Raper, Georg Gartner, Hassan Karimi, Chris Rizos
This Editorial lead paper for the Journal of Location Based Services surveys this complex and multi-disciplinary field and identifies the key research issues. Although this field has produced early...
APPLICATION OF DGPS/INS INTEGRATION TECHNIQUE TO BUSHFIRE MONITORING (2008)
Yong Li, Jinling Wang, Chris Rizos, George Baitch, Doug Kinlyside
The use of wireless sensor networks for bushfire monitoring can help to map and locate fires rapidly and accurately. A Management Centre could use such information in order to deploy fire-fighters,...
DIFFERENTIAL RADAR INTERFEROMETRY FOR MINE SUBSIDENCE MONITORING (2008)
Linlin Ge, Hsing-chung Chang, Lijiong Qin, Ming-han Chen, Chris Rizos
The history of mining disasters includes cases of subsidence and collapse into workings, and also a number of inrushes into underground mines, where deficiencies in surveying, or in maintenance and...
Application of 3D Time-frequency Analysis in Monitoring Full-scale Structural Response (2008)
Xiaojing Li, Chris Rizos, Linlin Ge, Eliathamby Ambikairajah
Abstract. Structural responses to severe loads such as due to typhoons and earthquakes are very complicated, with nonlinear and non-stationary characteristics. When external forces are applied to the...
Binghao Li, Chris Rizos, Hyung Keun Lee
Abstract. Network mobilephone-based positioning experiences degradation of location accuracy due to localised non-line-of-sight (NLOS) signal propagation. This is well known to be a major source of...
Direction-based Wireless LAN Positioning (2008)
Binghao Li, Jeffrey Kam, Jonathan Lui, Andrew G. Dempster, Chris Rizos
Abstract: Wireless LAN (WLAN) positioning has received much attention due to its advantages with respect to indoor positioning. “Location fingerprinting ” has been widely accepted as an effective...
A Stochastic Modelling Method for Network- Based GPS Positioning (2008)
Tajul A. Musa, Jinling Wang, Chris Rizos
Over the past few years the network-based GPS surveying technique has been widely discussed. The main advantage of the network-based technique is that the distance-dependent errors (i.e, residual...
This paper reviews the establishment of GPS continuously operating reference stations (CORS) by government agencies and research institutes over the last two decades. The justification for the...
A New Method for Yielding a Database of Location Abstract Fingerprints in WLAN (2008)
Binghao Li, Yufei Wang, Hyung Keun Lee, Andrew Dempster, Chris Rizos, Binghao Li, ...
Location fingerprinting in wireless LAN (WLAN) positioning has received much attention recently. One of the key issues of this technique is generating the database of ‘fingerprints’. The...
subsidence monitored by L-band satellite radar interferometry (2008)
Hsing-chung Chang, Ming-han Chen, Lijiong Qin, Linlin Ge, Chris Rizos
Ground subsidence can be caused by both natural and human-induced activities. In this paper, a radar remote sensing technique named Differential Interferometric SAR (D-InSAR) is introduced as means...
Yong Li, Andrew Dempster, Binghao Li, Jinling Wang, Chris Rizos
A low-cost attitude heading reference system by
Low-cost deformation measurement system for volcano monitoring (2008)
Craig Roberts, Cedric Seynat, Chris Rizos, Graeme Hooper, Craig Roberts, Cedric Seynat, ...
Ground deformation due to volcanic magma intrusion is recognised as an important precursor of eruptive activity at a volcano. The Global Positioning System (GPS) is ideally suited for this...
TROPOSPHERIC DELAY CORRECTIONS TO DIFFERENTIAL INSAR RESULTS FROM GPS OBSERVATIONS BIOGRAPHY (2008)
Volker Janssen, Linlin Ge, Chris Rizos
Germany, in 1997 and joined the Satellite Navigation and Positioning (SNAP) group at
Xiaojing Li, Linlin Ge, Eliathamby Ambikairajah, Chris Rizos, Yukio Tamura
Japan, has been monitored by an integrated RTK-GPS and accelerometer system and compared to results of finite element models (FEM) and frequency domain decomposition (FDD) method. The integrated...
Multipath Mitigation of Permanent GPS BIOGRAPHY Stations Using Wavelets (2008)
Chalermchon Satirapod, Rodjana Khoonphool, Chris Rizos, Chalermchon Satirapod
Ph.D.(UNSW) is a lecturer at the Department of
Journal of Global Positioning Systems (2006) (2008)
Yong Li, Andrew Dempster, Binghao Li, Jinling Wang, Chris Rizos
Vol. 5, No. 1-2:88-95 A low-cost attitude heading reference system by combination of GPS and magnetometers and MEMS inertial sensors for mobile applications
Hsing-chung Chang, Linlin Ge, Chris Rizos
Abstract-This paper demonstrates the capability of differential interferometric synthetic aperture radar (DInSAR) for measuring the subsidence at Wairakei and Tauhara geothermal fields in New...
Yong Li, Jinling Wang, Chris Rizos, Peter Mumford, Weidong Ding
nonlinear Kalman filtering design
Abstract Location-Based Services: Technical and Business Issues (2008)
Diep Dao, Chris Rizos, Jinling Wang
expanding their traditional applications to embrace a stream of consumer-focused, location-based applications. Through an integration with handheld devices capable of wireless communication and...
Designing a GPS Receiver for the UNSW BlueSat Microsatellite (2008)
This paper describes a GPS-based navigation system designed for the University of New South Wales (UNSW) BLUEsat microsatellite. BLUEsat is a research-focussed low earth orbit microsatellite project...
Clement Ogaja, Chris Rizos, Jinling Wang, Satellite Navigation, Positioning Group
interests are GPS deformation monitoring of engineering structures, and the associated time series analysis using digital signal processing techniques. Chris Rizos is a Professor at the School of...
Yong Li, Yong Li, Peter Mumford, Jinling Wang, Chris Rizos
obtained a PhD in flight dynamics in 1997. From 2000 to 2002 he was a STA Fellow at the Japanese Aerospace Exploration Agency (JAXA, formerly the National Aerospace Laboratory). Yong worked at the...
Linlin Ge, Hsing-chung Chang, Chris Rizos, Linlin Ge, Hsing-chung Chang, Chris Rizos, ...
Subsidence of the land surface is defined as the vertical surface movement due to the removal of subsurface support. This paper presents the differential interferometric synthetic aperture radar...
The University of New South Wales has been conducting (2008)
B. Sc. In, Michael Moore, Chris Rizos, Jinling Wang, G. Boyd, K. Mathews, ...
South Wales (UNSW) as a PhD student in March 1999. His research interests include attitude determination with a multi-antenna GPS arrays, Kalman filtering, and the associated time series analysis...
for Rich Site Summary, Resource Description Framework (RDF) Site Summary or Really Simple (2008)
You-heng Hu, Samsung Lim, Chris Rizos
Abstract. RSS is a type of eXtensible Markup Language (XML) format designed for syndicating web pages such as news websites. RSS may stand
Chris is a Fellow of the Australian Institute of Navigation, (2008)
Joel Barnes, Chris Rizos, Mustafa Kanli, David Small, Gavin Voigt, Nunzio Gambale, ...
Newcastle upon Tyne, UK. Joel has assisted in the development of the Locata receiver and testing of the Locata technology. Other current research interests include pseudolites, GPS receiver firmware...
D (2005b) Probabilistic algorithm to support the fingerprinting method for CDMA location (2008)
Binghao Li, Andrew G. Dempster, Joel Barnes, Chris Rizos, Donghang Li
Abstract. Mobile phone location methods based on signal time delay and angle of arrival measurements, such as time of arrival (TOA), time difference of arrival (TDOA), or angle of arrival (AOA),...
Weidong Ding, Jinling Wang, Chris Rizos, Doug Kinlyside
The central task of GPS/INS integration is to effectively blend GPS and INS data together to generate an optimal solution. The present data fusion algorithms, which are mostly based on Kalman...
Feature Extraction and Spatial Interpolation for Improved Wireless Location Sensing (2008)
Hyung Keun Lee, Ju-Young Shim, Hee-Sung Kim, Binghao Li, Chris Rizos
This paper proposes a new methodology to improve location-sensing accuracy in wireless network environments eliminating the effects of non-line-of-sight errors. After collecting bulks of anonymous...
Multi-constellation GNSS/RNSS from the perspective of high accuracy users (2008)
Global Navigation Satellite Systems (GNSSs) involve satellites, ground stations and user equipment, and are now used to support many activities within modern societies. The U.S. Global Positioning...
Feature Extraction and Spatial Interpolation for Improved Wireless Location Sensing (2008)
Hyung Keun Lee, Ju-young Shim, Hee-sung Kim, Binghao Li, Chris Rizos
Abstract: This paper proposes a new methodology to improve location-sensing accuracy in wireless network environments eliminating the effects of non-line-of-sight errors. After collecting bulks of...
Clement Ogaja holds a B.Sc. in Surveying from the (2007)
Clement Ogaja, Chris Rizos, Jinling Wang, Satellite Navigation, Positioning Group
Scholar. His research interests are GPS deformation monitoring of engineering structures, and the associated time series analysis using digital signal processing techniques. Chris Rizos is a...
Clement Ogaja, Chris Rizos, Jinling Wang, James Brownjohn
An RTK-GPS system has been installed for the purpose of monitoring the behaviour of a high rise building in Singapore. This system will contribute to a project of monitoring that commenced in 1995...
Linlin Ge, Chris Rizos, Shaowei Han, Howard Zebker
Compared to opencut mining, underground coal mining is more common in Australia due to its lesser impact on the environment. Although there are several underground mining methods, such as the...
Craig Roberts, Peter Morgan, Chris Rizos
variance applied to time series baseline results for
Chairman of the IAG's Special Study Group 1.179 "Wide (2007)
Conference Publications, Liwen Dai, Shaowei Han, Jinling Wang, Jinling Wang, Chris Rizos
November 1998. Since 2000, he has been a full time Ph.D student at UNSW. His current research interests are software and algorithm development for rapid static and kinematics positioning of combined...
BIOGRAPHY GPS Analysis with the Aid of Wavelets (2007)
Chalermchon Satirapod, Clement Ogaja, Jinling Wang, Chris Rizos
University of New South Wales (UNSW). His research is focussed on automated and qualityassured GPS surveying for a range of applications.
ABSTRACT Interpolation of GPS Results Incorporating Geophysical and InSAR Information (2007)
Linlin Ge, Shaowei Han, Chris Rizos
Continuous GPS networks, typically with a station spacing of about 30km, are still not dense enough to accurately characteristise the dynamics of active faults. Interpolation of these GPS results can...
International Global Navigation Satellite Systems Society (2007)
Wendi Peng, Linlin Ge, Chris Rizos
The navigation at parking stations and parking spaces
VirtuaLite, a new method for GPS INS Integration for the Agricultural Environment (2007)
Anthony Cole, Jinling Wang, Andrew G. Dempster, Chris Rizos
Agricultural applications, particularly row cropping applications which are the focus of this paper, are ideal candidates for automation through their continuous and repetitive nature, high...
International Global Navigation Satellite Systems Society (2007)
Yong Li, Peter Mumford, Jinling Wang, Chris Rizos
A low-cost field re-configurable real-time GPS/INS integrated system – design and implementation
An open source A-GNSS reference server (2007)
Thomas S. Yan, Peter Mumford, Andrew Dempster, Chris Rizos, Manosh Fern, Nam Hoang
Assisted-GNSS (A-GNSS) devices (clients) require a source for providing the assistance data that enable positioning in a wide variety of environments, particularly areas of weak signal strength. This...
Roads and Traffic Authority (2007)
Dennis Robert Entriken, Chris Rizos
This paper describes the application of Mobile Mapping Technology within a Roads and Traffic Authority to assist individual business units, and the organisation as a whole, to achieve operational...
A New Framework for Server-Based and Thin-Client Real-Time Kinematic Services (2007)
Current Global Navigation Satellite Systems (GNSS) research has proposed new algorithms for multiple frequency ambiguity resolution, software-based receivers for re-configurability, network...
Impact of Multiple Frequency GNSS Signals on Future Regional GNSS Services (2007)
Yanming Feng, Chris Rizos, Matt Higgins
The key limitation of existing Real-Time Kinematic (RTK) systems is the service distances between reference stations and user receivers due to the impact of distance-dependent biases such as orbit...
The International GNSS Service: In the Service of Geoscience and the Geospatial Industry (2007)
The IGS is an international activity with more than 200 participating organisations in over 80 countries celebrating over 13 years of successful service
Indoor Positioning Techniques Based on Wireless LAN (2007)
LI, Binghao, SALTER, James, DEMPSTER, Andrew G, RIZOS, Chris
As well as delivering high speed internet, Wireless LAN (WLAN) can be used as an effective indoor positioning system. It is competitive in terms of both accuracy and cost compared to similar systems....
Mine subsidence monitoring using multisource satellite (2006)
Hsing-chung Chang, Linlin Ge, Chris Rizos
Abstract- This paper demonstrates the use of differential interferometric synthetic aperture radar (DInSAR) for mine subsidence monitoring in Australia. The C-band SAR imagery acquired by ERS-1/2 and...
Challenges facing spatial information and geomatics education in the higher education sector (2006)
McDougall, Kevin, Williamson, Ian, Bellman, Chris, Rizos, Chris
[Abstract]: With the continuing high demand for graduates in the spatial information industry and the low student numbers entering university courses, the long term viability of higher education...
Xiaojing Li, Linlin Ge, Eliathamby Ambikairajah, Chris Rizos, Yukio Tamura, Akihito Yoshida, ...
ORIGINAL ARTICLE Civil engineering structures, such as tall buildings and long span bridges, are typically designed based on the principles of material and structural mechanics. Finite
Hybrid Method for Localization Using WLAN (2005)
Binghao Li, Andrew Dempster, Chris Rizos, Joel Barnes
There are essentially two categories of signal strength (SS) based techniques for positioning
Trends in geopositioning for LBS, navigation and mapping (2005)
The Global Positioning System (GPS) is a satellite-based technology that has truly revolutionised many positioning and navigation activities, and today stands unchallenged as the ‘first choice’...
ERS tandem DInSAR: the change of ground surface in 24 hours (2005)
Hsing-chung Chang, Linlin Ge, Chris Rizos
Abstract- In the application of interferometric synthetic aperture radar (InSAR), ERS-1/2 tandem mission has been used widely for high precision digital elevation model (DEM) generation. Its high...
Multipath mitigation by wavelet analysis for GPS base station applications (2005)
Chalermchon Satirapod, Chris Rizos
It is well known that multipath disturbance is one of the major error sources impacting on high precision GPS positioning. The multipath disturbance is largely dependent on the receiver’s...
RIZOS C.: Online stochastic modelling for network-based GPS real-time kinematic positioning (2005)
Jinling Wang, Hung Kyu Lee, Young Jin Lee, Tajul Musa, Chris Rizos
Abstract. Baseline length-dependent errors in GPS RTK positioning, such as orbit uncertainty, and atmospheric effects, constrain the applicable baseline length between reference and mobile user...
An open GNSS receiver platform architecture.Journal of GPS (2004)
Frank Engel, Peter Mumford, Kevin Parkinson, Chris Rizos, Gernot Heiser
Abstract. In this article we present the concept of a FPGA-based GPS receiver architecture with the aim of providing a framework for investigating new receiver architectures for current and upcoming...
X. Jia, S. Ravindra Babu, Joel Barnes, Chris Rizos, Eamonn Glennon, Rod Bryant
Current applications of GPS typically require the antenna of the user’s receiver to have a clear view of sky in order to acquire and track the line-ofsight signals. However, there is an increasing...
An Open GNSS Receiver Platform Architecture (2004)
Frank Engel, Gernot Heiser, Peter Mumford, Kevin Parkinson, Chris Rizos
In this paper we present the concept of an FPGA-based GPS receiver architecture with the aim of providing a framework for investigating new receiver architectures for current and upcoming GNSS...
Precise Engineering Applications of Pseudolites Augmented GNSS (2004)
Emily Cosser, Xiaolin Meng, Gethin W Roberts, Alan H Dodson, Joel Barnes, Chris Rizos, ...
In satellite based positioning and navigation, the number and spatial distribution of the observed GNSS satellites are a function of the observation site. Insufficient number of satellites, poor...
Mitigating Residual Tropospheric Delay to Improve User’s Network-Based Positioning (2004)
Tajul A. Musa, Jinling Wang, Chris Rizos, Young-jin Lee, Azhari Mohamed, Tajul A. Musa
Existing apriori tropospheric models are not sufficiently accurate to remove tropospheric delay from GPS observations. Remaining effects of residual tropospheric delay need to be estimated to ensure...
Syren - a Ship Based Location-Aware Audio Experience (2004)
Daniel Woo, Nick Mariette, Nigel Helyer, Chris Rizos
Abstract. Syren, a location-based, multi-speaker augmented audio reality installation was presented as a shipboard exhibit at the 12th International Symposium on Electronic Art in August 2004. It was...
Seismic response of a tower as measured by an integrated RTK-GPS system (2004)
Xiaojing Li, Linlin Ge, Yukio Tamura, Akihito Yoshida, Chris Rizos, Gang-ding Peng
Monitoring structural response induced by seismic waves is an efficient way to mitigate the damage of earthquakes. For example, the measured signal can be used to activate an alarm system in order to...
Hsing-chung Chang, Linlin Ge, Chris Rizos, Tony Milne
Abstract—A high resolution digital elevation model (DEM) enables easy derivation of subsequent information for various applications. This paper uses Real-Time Kinematic (RTK) GPS to examine the...
Syren - a Ship Based Location-Aware Audio Experience (2004)
Daniel Woo, Nick Mariette, Nigel Helyer, Chris Rizos
Syren, a location-based, multi-speaker augmented audio reality installation was presented as a shipboard exhibit at the 12th International Symposium on Electronic Art in August 2004. It was conceived...
Preliminary Results of the Carrier-Smoothed Code- (2003)
E. K. Poh, Joel Barnes, Hung-kyu Lee, Jun Zhang, Hyung-keun Lee, ...
With the full GPS operational capability in the mid-1990s, it has been used as a stand-alone system for many land applications that require fast and precise positioning such as mining, heavy...
Hyung Keun Lee, Chris Rizos, Gyu-in Jee
Abstract: Carrier-smoothed-code filters for differential Global Navigation Satellite System (GNSS) positioning can be partitioned into two groups: position domain filters and range domain filters. In...
Design of kinematic DGPS filters with consistent error covariance information (2003)
Hyung Keun Lee, Chris Rizos, Gyu-in Jee
Abstract: Consistent and realistic error covariance information is important for position estimation, error analysis, fault detection, and integer ambiguity resolution for differential GPS. In...
The integration of GPS, radar interferometry and GIS for ground deformation monitoring (2003)
Linlin Ge, Hsing-chung Chang, Volker Janssen, Chris Rizos
Fellow and leader of InSAR and deformation monitoring
2003e) The monitoring of bridge movements using GPS and pseudolites (2003)
Joel Barnes, Chris Rizos, Jinling Wang, Xiaolin Meng, Emily Cosser, Alan Henry Dodson, ...
For the monitoring of man-made structures, and specifically suspension bridges, it is desirable for the measurement system to deliver equal precision in all position components, all the time. When...
Carrier phase processing issues for high accuracy integrated GPS/Pseudolite/INS systems (2003)
Hung-kyu Lee, Jinling Wang, Chris Rizos
This paper discusses solutions to the challenges of cycle slip detection / identification, and ambiguity resolution, for maintaining the high accuracy of an integrated GPS/Pseudolite/INS systems....
Experiments of Inverted Pseudolite Positioning for Airship-Based GPS Augmentation System (2002)
Toshiaki Tsujii, Masatoshi Harigae, Joel Barnes, Jinling Wang, Chris Rizos
Recently some countries have begun conducting feasibility studies and R&D projects on High Altitude Platforms Systems (HAPS). Japan has been investigating the use of an airship system that will...
GPS/Pseudolite/INS integration: concept and firts test (2002)
Hung Kyu Lee, Jinling Wang, Chris Rizos, Dorota Grejner-brzezinska, Charles Toth
This paper discusses the introduction of pseudolites (ground-based GPS-like signal transmitters) into existing integrated GPS/INS systems in order to provide higher availability, integrity and...
A Mixed-Mode GPS Network Processing Approach for Deformation Monitoring Applications (2002)
The Global Positioning System (GPS) can be utilised in a wide range of deformation monitoring applications, such as the monitoring of active volcanoes, tectonic fault lines, landslides, ground...
2002a�. ‘‘Analysis of pseudolite augmentation for GPS airborne applications (2002)
Hung Kyu Lee, Jinling Wang, Chris Rizos, Joel Barnes, Toshiaki Tsujii
His research is focused on developing an integrated GPS/Pseudolite/INS system for kinematic positioning, navigation and mobile mapping application. Jinling Wang is a Lecturer in the School of...
Kinematic positioning with an integrated GPS/pseudolite/INS (2002)
Hung Kyu Lee, Jinling Wang, Chris Rizos
Abstract. Although existing integrated GPS/INS systems can overcome inherent drawbacks of each system, such as no result without line-of-sight for GPS and INS errors that grow with time, performance...
Michael Moore, Chris Rizos, Jinling Wang
A multi-antenna GPS array has been used by many researchers and in practise and to determine the attitude parameters of a mobile platform. At the heart of high accuracy real-time GPS-based attitude...
Intelligent Skyscraper Monitoring System (2002)
Based On Gps, Of Seismology, Linlin Ge, Linlin Ge, Xiaojing Li, ...
The collapse of the World Trade Center (WTC) has reminded us of the importance of structural integrity monitoring for improving disaster preparedness and response. A real-time system based on GPS and...
The Performance of a Pseudolite-Based Positioning System (2002)
For Deformation Monitoring, Joel Barnes, Jinling Wang, Chris Rizos, Toshiaki Tsujii
There are three general scenarios for the use of pseudolites in deformation monitoring systems; namely GPS augmented with pseudolites, pseudolite-only and pseudolite `inverted' positioning. This...
Processing Mixed-Mode GPS Networks for Deformation Monitoring (2002)
Applications Volker Janssen, Volker Janssen, Chris Rizos
this paper, the ionospheric correction model proposed for this mixed-mode system and the data processing strategy are described, and experimental results obtained in different geographical regions...
3D Multi-static SAR System for Terrain Imaging Based on Indirect GPS Signals (2002)
Yonghong Li, Chris Rizos, Eugene Donskoi
Abstract. A 3D multi-static SAR imaging system which utilises reflected GPS signals from objects on the Earth's surface is described in this paper. The principle of bistatic radar is used to...
Mixed-Mode GPS Network Processing for Deformation Monitoring (2002)
Applications In The, Volker Janssen, Chris Rizos
applications. During the past few years a methodology has been developed for processing data collected by GPS networks consisting of a mixed set of single-frequency and dual-frequency receivers. The...
The Development of a GPS/Pseudolite Positioning (2002)
System For Vehicle, Uk. Since December, Flat Steel, Joel Barnes, Chris Rizos, Jinling Wang, ...
The Satellite Navigation and Positioning (SNAP) group at The University of New South Wales (UNSW) has been actively conducting research into high precision kinematic GPS, alone and in combination...
Low-Cost GPS-Based Volcano Deformation Monitoring at Mt. Papandayan, Indonesia (2002)
Volker Janssen, Craig Roberts, Chris Rizos, Hasanuddin Z. Abidin
The Global Positioning System (GPS) can be utilised to detect ground deformations of the surface of a volcano. Ground deformation monitoring is considered one of the most effective tools for...
GPS and GLONASS integration: Modelling and ambiguity resolution issues (2001)
Jinling Wang, Chris Rizos, Mike P. Stewart, Alfred Leick
The integration of GPS with GLONASS may be considered a major milestone in satellitebased positioning, because it can dramatically improve the reliability and productivity of said positioning....
Pseudolite-based inverted positioning and its applications (2001)
Liwen Dai, Jinling Wang, Toshiaki Tsujii, Chris Rizos
Ph.D. student at UNSW where his current research interests are software and algorithm development for rapid static and kinematic positioning (and attitude determination) using integrated GPS, Glonass...
Real-time carrier phase ambiguity resolution for GPS/Glonass reference station networks (2001)
Liwen Dai, Jinling Wang, Chris Rizos, Shaowei Han
November 1998. Since the start of 2000 he has been a full-time Ph.D. student at UNSW where his current research interests are software and algorithm development for rapid static and kinematic...
Chalermchon Satirapod, Jinling Wang, Chris Rizos
Minimum Norm Quadratic Unbiased Estimation (MINQUE) is one of the commonly used methods for the estimation of variance-covariance components. The MINQUE procedure has been successfully used to...
Slope Stability Monitoring (2001)
The Use Of, Linlin Ge, Chris Rizos
GPS multipath has long been considered a major error source in GPS applications. In this paper, however, an attempt is made to use multipath as a signal. The proposed application of using GPS...
Precise GPS Positioning: Prospects and Challenges (2001)
Chris Rizos School, Chris Rizos
Carrier phase-based GPS positioning is now an indispensable tool for a wide range of precise applications in navigation, surveying and geodesy. To address such a variety of applications, many...
Liwen Dai, Chris Rizos, Shaowei Han
GPS/GLONASS pseudo-range and carrier phase observations are affected by errors such as cycle slips, multipath effects, residual atmospheric biases, orbital errors, inter-channel biases and random...
Jinling Wang, Chalermchon Satirapod, Chris Rizos
Global Positioning System (GPS) carrier phase measurements are used in all precise static relative positioning applications. The GPS carrier phase measurements are generally processed using the...
Mitigating Differential Troposphere Effects For Gps-Based (2001)
Volcano Monitoring Craig, Craig Roberts, Chris Rizos
The UNSW-designed GPS volcano monitoring system installed on Gunung Papandayan seeks to characterise the ground deformation within the volcanic edifice. Hourly baseline solutions produce a time...
A Navigation/Positioning Service Based on Pseudolites Installed on Stratospheric Airships (2001)
Toshiaki Tsujii, Chris Rizos, Jinling Wang, Liwen Dai, Craig Roberts, Masatoshi Harigae
Recently, some countries have begun conducting feasibility studies and R&D projects on High Altitude Platforms Systems (HAPS). Japan has been investigating the use of an airship system that will...
Pseudo-Satellite Applications in Deformation Monitoring (2001)
Liwen Dai, Jinling Wang, Chris Rizos, Shaowei Han
In this paper, three general classes of potential pseudolite applications for deformation monitoring are described. The first is GPS augmentation with pseudolite(s), which is suitable for...
Performance Analysis of Integrated GPS/GLONASS (2001)
Liwen Dai, Shaowei Han, Chris Rizos
Due to the different signal frequencies for the GLONASS satellites, the commonly used double-differencing procedure for carrier phase data processing cannot be implemented in its straightforward...
Toward The Implementation Of On-Line Structural (2001)
Clement Ogaja, Chris Rizos, Jinling Wang
The aim of this paper is twofold. First, it describes a pilot project in Singapore, in which an RTKGPS system has been installed for the purpose of monitoring the behaviour of a high rise building....
Integrated Space Geodetic Techniques For Monitoring Ground (2001)
Subsidence Due To, Linlin Ge, Chris Rizos, Makoto Omura, Shigeki Kobayashi
Ground subsidence monitoring is of paramount importance in relation to the safety and efficiency of underground mining operations. Moreover, in established coal fields in eastern Australia, it has...
Applications of pseudolites for deformation monitoring systems (2001)
Liwen Dai, Jinling Wang, Chris Rizos, Shaowei Han
Due to the high precision of the carrier phase observables, the Global Positioning System (GPS) technology has been widely used for measuring crustal motion and ground subsidence, and more recently...
GPS and pseudo-satellites integration for precise positioning (2001)
Jinling Wang, Toshiaki Tsujii, Chris Rizos, Liwen Dai, Michael Moore
It is well known that for spaceborne satellite positioning systems such as GPS and Glonass, the accuracy, availability and reliability of the positioning results is heavily dependent on the number...
Inverted Pseudolite Positioning And Its Applications (2001)
Liwen Dai Jinling, Liwen Dai, Jinling Wang, Toshiaki Tsujii, Chris Rizos
In this paper the inverted pseudolite positioning system, comprising a `constellation' of GPS receivers that tracks a mobile pseudolite, is discussed. Two configurations of the inverted...
Linlin Ge, Horgne-yue Chen, Shaowei Han, Chris Rizos
In the case of monitoring the crustal deformation due to active seismic fault or volcanic activity or subsidence due to underground mining, sub-kilometre resolution may be required. Therefore, the...
An Approach to GPS Analysis incorporating Wavelet Decomposition (2001)
Chalermchon Satirapod Clement, Clement Ogaja, Jinling Wang, Chris Rizos
The classical least-squares processing of GPS measurements generates residuals, which contains the signature of both unmodelled systematic biases and random measurement noise. It is desirable to...
A New Stochastic Modelling Procedure for (2001)
Precise Static Gps, Chalermchon Satirapod, Jinling Wang, Chris Rizos
Carrier phase measurements are used for all high accuracy static GPS positioning applications. It is well known that there are two important aspects to the optimal processing of GPS measurements: the...
Multivariate Monitoring with GPS (2001)
Observations And Auxiliary, Clement Ogaja, Jinling Wang, Chris Rizos, School Of Surveying, Spatial Information
In a multi-sensor measurement or monitoring environment, p variables are measured simultaneously. The measured data are correlated and can be monitored to identify special causes of variation in...
A New Tropospheric Delay Model For (2001)
Toshiaki Tsujii, Jinling Wang, Chris Rizos, Masatoshi Harigae, Toshiharu Inagaki
GPS can play an important role in high-altitude vehicle positioning. In such GPS applications the residual tropospheric delay in GPS measurements is a major error source. Several strategies for...
Detection Of Wind-Induced Response By (2001)
Wavelet Transformed Gps, Clement Ogaja, Jinling Wang, Chris Rizos
GPS solutions offer direct dynamic monitoring of long-span and tall civil structures. Timely and correct interpretation of the solutions is essential to improved monitoring and reduced number of...
GPS/INS/Pseudolite Integration: (2001)
Concepts Simulation And, Liwen Dai, Toshiaki Tsujii, Chris Rizos, Dorota Grejner-brzezinska, Charles Toth, ...
Traditionally, Inertial Navigation Systems (INS) provide positioning and attitude information for the guidance (and perhaps control) of a wide range of moving platforms in the air, at sea, or on the...
Pseudolite applications in positioning and navigation: Modelling and geometric analysis (2001)
P. R. China, Liwen Dai, Jinling Wang, Toshiaki Tsujii, Chris Rizos
Pseudolites are an exciting technology whose potential can be explored for a wide range of positioning and navigation applications, either as a significant augmentation of spacebased systems, or as...
A Technique for Precise Positioning of High (2001)
Altitude Platforms System, Toshiaki Tsujii, Jinling Wang, Liwen Dai, Chris Rizos, School Of Surveying, ...
GPS can play an important role in the positioning of High Altitude Platforms Systems (HAPS). In such GPS applications the residual tropospheric delay in GPS measurements is a major error source....
Ippolito,Richard,ConsumerReaction toMeasures ofPoorQuality: Evidence (2000)
Chalermchon Satirapod, Chris Rizos, Jinling Wang
The announcement by U.S. President Bill Clinton to turn off 'Selective Availability ' at midnight (Washington DC time) 1 May 2000 caught everyone by surprise. This decision to stop...
Permanent GPS networks have been established since the 1980s to support a variety of geodetic applications, ranging from local deformation monitoring to large scale crustal motion measurement....
PSEUDOLITES – A NEW TOOL FOR SURVEYORS? (2000)
Ip Ki Choi, Jinling Wang, Shaowei Han, Chris Rizos, Ip Ki Choi, ...
1987. He served in the Hong Kong Government in various land and hydrographic surveying aspects for more than 15 years and is currently a Ph.D. student in the School of Geomatic Engineeing, UNSW,...
The Double Interpolation and Double Prediction (DIDP) approach for (2000)
Linlin Ge, Shaowei Han, Chris Rizos
The technique of synthetic aperture radar interferometry (or InSAR) was first suggested in 1974. Due to its characteristics of very high spatial resolution and wide coverage, as well as the cost...
2 nd Trans Tasman Surveyors Congress The Millennium Hotel (2000)
Clement Ogaja, Chris Rizos, Shaowei Han, Queenstown New Zealand
Scholar. His research interests are the improved continuous GPS-based monitoring of buildings and engineering structures, including the application of real-time signal processing techniques. Chris...
GPS Multipath Change Detection in Permanent GPS (2000)
Stations Linlin Ge, Linlin Ge, Shaowei Han, Chris Rizos, Yuki Hatanaka
multipath change in permanent, continuously operating GPS (CGPS) stations. The technique has been tested on some experimental data, indicating that the multipath change above the receiver noise level...
2 nd Trans Tasman Surveyors Conference The Millennium Hotel (2000)
Chalermchon Satirapod, Kenneth Wong, Chris Rizos, Queenstown New Zealand
GPS surveying for a range of applications. Kenneth Wong graduated in 1994 with a B.Surv from The University of New South Wales and is presently employed as a computer systems officer at the School of...
Real-Time Ionospheric scintillation monitoring," presented at 12th Int (1999)
Xuan Fu, School Geomatic, Wanxuan Fu, Shaowei Han, Chris Rizos, ...
Australia, in 1989, as PhD student first, and later as a
Chris Rizos, Shaowei Han, Horng-yue Chen
Continuously operating GPS networks have been used for many years in support of: (a) geodetic goals such as the determination of crustal motion on a variety of spatial scales, and (b) to provide...
B. Sc. (wtusm, M. Sc. (wtusm, Shaowei Han, Shaowei Han, Chris Rizos
commenced research on GPS and general survey data processing techniques in 1986 as a postgraduate student at the Wuhan Technical University of Surveying and Mapping, P.R. China, and has since been...
GPS seismometers with up to 20Hz sampling rate (1999)
Linlin Ge, Shaowei Han, Chris Rizos, Yuzo Ishikawa, Mitsuyuki Hoshiba, Yasuhiro Yoshida, ...
The large near-field displacements before and during an earthquake are invaluable information for earthquake source study and for the detection of slow/silent quakes or pre-seismic crustal...
GPS with multiple reference stations: surveying scenarios (1999)
Chris Rizos, Chalermchon Satirapod, Horng-yue Chen, Shaowei Han
The standard scenario for GPS surveying is to use two carrier phase-tracking GPS receivers, one located at a "reference " station with known coordinates and the second one at a...
and Structural Engineering, Nanyang Technological (1997)
Xiaoming Chen, School Civil, Shaowei Han, B. Sc. (wtusm, M. Sc. (wtusm, Ph. D, ...
(WTUSM), P.R.China. His current research interests are in the area of real-time high precision GPS positioning, especially the use of multiple reference station for carrier phase-based GPS...
The Integration of Collocated GPS, VLBI and SLR Results BIOGRAPHY (1997)
Linlin Ge, Linlin Ge, Horng-yue Chen, Shaowei Han, Chris Rizos, ...
real-time seismology at the Meteorological Research Institute of Japan. He is currently a Ph.D. candidate at The University of New South Wales, Australia, where his research interests are the...