Epidemiological study of ocular trauma in an urban slum population in Delhi, India (2008)
Vats, S, Murthy, G, Chandra, M, Gupta, S, Vashist, P, Gogoi, M
Analysis Method of Errors (Motion and Atmospheric) in Synthetic Aperture Radar (SAR) Images (2005)
A. Danklmayer, R. Scheiber, T. Boerner, M. Chandra
A method to allow the analysis of the effects of motion and atmospheric errors in SAR images is here presented. The objective of the method is to allow the visualization of the effects of motion...
Principal Component Analysis In Radar Polarimetry (2005)
A. Danklmayer, M. Chandra, E. Lüneburg
Second order moments of multivariate (often Gaussian) joint probability density functions can be described by the covariance or normalised correlation matrices or by the Kennaugh matrix (Kronecker...
Application of the Cloude-Pottier decomposition to weather radar signatures (2005)
M. Galletti, M. Chandra, E. Pottier, A. Ghorbani
In this paper we apply the Cloude-Pottier decomposition to Weather Radar Signatures. First, we present the results of a simulation carried out at the Chemnitz University of Technology and give the...
Potential of coherent decompositions in SAR polarimetry and interferometry (2004)
Alberga, V., Krogager, E., Chandra, M., Wanielik, G.
A comparative study has indicated that coherent decompositions may have high potential in applications using fully polarimetric and interferometric SAR data, as an alternative or supplement to...
SAR Product Control Software (2001)
T. Brner, M. Chandra, D. Geudtner, D. Hounam, B. Schttler, M. Schwerdt, ...
As SAR instruments and their operating modes become more complex, as new applications place more and more demands on image quality and as our understanding of their imperfections becomes more...
Analysis of amplitude ratios in SAR-polarimetry (2001)
The progress in the field of polarimetry-theory has recently kept pace with the growing availability of polarimetric SAR data from newly operated sensors by different research institutions. Some of...
Kolmogorov Statistics for Tests of Fit for the Extreme-Value and Weibull Distributions, (1998)
Chandra,M., Singpurwalla,N. D., Stephens,M. A.
Sponsored in part by Contracts N00014-76-C-0475 and DAAG29-77-C-0031 and NRC-04-78-239.
Chandra, M., Hardaker, P.J., Holt, A.R.
New method using hybrid bases for making polarimetric radar measurements.
Chandra, M. (Vortragender), Lueneburg, E.
Dieser Beitrag befasst sich mit der Interpretation von relativen Streuphasen der Streumatrix fuer verschiedene Polarisationsebenen. Insbesondere werden die differentielle Ausbreitungsphase, die...
Polarimetric Target Indicators and Weather Radar Applications. (1995)
Auernhammer, T, Lueneburg, E. (Vortragender), Chandra, M, Schroth, A.
The real nonnegative eigenvalues of the covariance matrix allow the introduction of a target randomness parameter. This polariyation basis independent parameter is a measure of the distance between...
The document details the DLR contributions to the PADRE-Project efforts.
The X-SAR Nadir Looking Rain Experiment. (1995)
Werner, M. (Vortragender), Chandra, M.
First results of the X-SAR Nadir looking rain experiment have been presented showing clearly the rain centers. The resolution in nadir direction is 15 m. The cloud extends over nearly 200 km.
The Physical Interpretation of Mean Doppler Velocity Measured with Weather Radars. (1995)
The document shows how the scattering dependence in Doppler measurements of rain could be easily accounted for.
Polarimetric Aspects of Doppler Moments. (1995)
Chandra, M. (Vortragender), Schroth, A.
The paper shows the polarimetric aspects of making and interpreting Doppler measurements recorded with the DLR weather radar.
Polarisation-Diversity Radar Observations of Storms at C-Band. (1995)
Holt, A.R. (Vortragender) *), Chandra, M., Wood, S.J. *)
Polarisation measurements in different weather situations where made using different polarisation basis. The propagation effects where found to provide information on the weather targets observed.
Hornbostel, A. (Vortragender), Chandra, M., Schroth, A.
Path integrated rain rates and drop size distributions derived from polarimetric radiometer measurements show good agreement with rain gauge and distrometer measurements. Rain rates obtained from...
Chandra, M., Schroth, A., Lueneburg, E.
A new methodology, which uses differential phase measurements, for estimating and correcting attenuation effects in radar measurements, is suggested and tested with DLR radar data. The application of...
Polarimetrische und Doppler-Radar-Methoden in Niederschlagsbestimmung und -Erkennung. (1994)
Chandra, M. (Vortragender), Schroth, A.
Stand der neuesten Methoden der modernen Wetterradar-Forschung und -Technik werden erlaeutert. Die Anwendung der Doppler- und Polarisationsverfahren auf den Gebieten Hydrologie, Meteorologie und...
Propagation Effects in C-Band Polarisation-Diversity Measurements. (1994)
Chandra, M. (Vortragender), Wood, S.J. *), Lux, S.
Using the DLR weather radar data measured in H-V, +/- 45, and right/left circular polarisation basis, microphysical parameter were derived and the influence of propagation effects on YDR, and LDR...
Polarimetric Signatures from Natural and Artificial Randomly Distributed Targets (1993)
Chandra, M., Ziegler, V., Hornbostel, A., Lueneburg, E., Schroth, A.
In this paper, initially, the essential measurement method of the DLRweather radar is described. In the following, some polarimetric signatures from natural and artificial targets (polarimetric DLR...
Recent Advances in Polarimetric Doppler Radar Meteorology at DLR. (1993)
Schroth, A., Chandra, M., Hornbostel, A.
Meteorological radars are of prime importance for the derivation of models describing the influences of the atmosphere on satellite communication signals especially in the new frequency bands (20 -...
Ground-Based Polarimetric Radar Imaging at DLR, An Overview. (1993)
Schroth, A., Chandra, M., Herdeg, W.
The paper gives an overview about the activities at DLR in the field of ground-based polarimetric radar imaging. Some features of the measurement equipment are given. Special emphasis is given to the...
Chandra, M. (Vortragender), Schroth, A.
Die differentielle Phase wurde aus Korrelationen abgeleitet. Schwierigkeiten bei Anwendung dieses Verfahrens wurden hervorgehoben.
Erforschung von Niederschlaegen mit polarisierten elektromagnetischen Wellen. (1993)
Die Erforschung von Niederschlaegen mit polarisierten elektromagnetischen Wellen wurde erlaeutert. Insbesondere wurde das polarimetrische Verfahren fuer die Niederschlagsbestimmung betont.
Transmission of Electromagnetic Waves in the Atmosphere. (1993)
The lecture covered the influence of atmospheric effects on the propagation of electromagnetic waves. In particular the phenomena of ducting and refraction were dealt with. In support of these topics...
Schroth, A., Tragl, K. *), Lueneburg, E., Chandra, M.
The functional aspects of the DLR radar are briefly described. The radar permits the characterization of scatter volumes or other targets by a time series of scattering matrices as well as by the...
The presentation summarized the latest techniques of weather radar applications in the fields of hydrological research and satellite link planning.
Some Polarimetric Weather Radar Signatures and their Interpretation. (1992)
The paper will present a statistical and microphysical analysis of polarimetric weather radar signatures. In particular, these aspects will be emphasized with reference to: differential reflectivity,...
Transmission of Electromagnetic Energy Through the Atmosphere. (1992)
The lecture covered the influence of atmospheric effects on the propagation of electromagnetic waves. In particular the phenomena of ducting and refraction where dealt with. In support of these...
Rain Intensity Estimation by Ground Based Coherent Polarimetric Radars. (1992)
The paper shows how the differential propagation phase could be obtained from coherent polarimetric radar measurements. Furthermore, it was shown how this quantity could be used to derive a three...
Polarimetric Calibration Aspects of the DLR-Radar (1991)
Chandra, M., Clemens, E., Ritenberg, F., Schroth, A., Tragl, K.
Remote Sensing of the Atmosphere by Polarimetric Radar (1991)
Schroth, A., Tragl, K., Chandra, M., Hornbostel, A., Lueneburg, E.
The Coherent Polarimetric DLR-Radar: Method, Modifications and Application (1991)
Chandra, M., Clemens, E., Hornbostel, A., Lueneburg, E., Schroth, A., Ziegler, V.
Polarimetric Signatures from Natural and Artificial Randomly Distributed Targets (1991)
Chandra, M., Ziegler, V., Hornbostel, A., Lüneburg, E., Schroth, A.
The Coherent Polarimetric DLR Radar: Method, Modifications and Applications. (1991)
Chandra, M., Clemens, C., Hornbostel, A., Lueneburg, E.
Since the inception of the DLR radar, the measurement of the radar echoes corresponding to the four elements of the target backscattering matrix, in a user chosen orthogonal polarization basis has...
A C-Band Coherent Polarimetric Radar for Propagation and Cloud Physics Research. (1989)
At DLR in Oberpfaffenhofen, West Germany, a recently developed coherent polarimetric C-band radar is now in operation for research in atmospheric physics and radio wave propagation physics. Its...
Changes in status, attitude, choice and aspirations of hindu urban woman (1979)
Aspirations of hindu urban woman
Thesis (doctoral)--University of London, 1933.
Laparoscopic splenectomy: outcome and efficacy in 103 consecutive patients.
Katkhouda, N, Hurwitz, M B, Rivera, R T, Chandra, M, Waldrep, D J, Gugenheim, J, ...
OBJECTIVE: To study the safety and efficacy of laparoscopic splenectomy (LS) in patients with predominantly benign hematologic disorders. SUMMARY BACKGROUND DATA: The technical feasibility of LS has...
Laparoscopic management of benign solid and cystic lesions of the liver.
Katkhouda, N, Hurwitz, M, Gugenheim, J, Mavor, E, Mason, R J, Waldrep, D J, ...
OBJECTIVE: The authors present their experience in the laparoscopic management of benign liver disease. The aim of the study is to analyze technical feasibility and evaluate immediate and long-term...
Laparoscopic splenectomy: outcome and efficacy in 103 consecutive patients.
Katkhouda, N, Hurwitz, M B, Rivera, R T, Chandra, M, Waldrep, D J, Gugenheim, J, ...
OBJECTIVE: To study the safety and efficacy of laparoscopic splenectomy (LS) in patients with predominantly benign hematologic disorders. SUMMARY BACKGROUND DATA: The technical feasibility of LS has...
Laparoscopic management of benign solid and cystic lesions of the liver.
Katkhouda, N, Hurwitz, M, Gugenheim, J, Mavor, E, Mason, R J, Waldrep, D J, ...
OBJECTIVE: The authors present their experience in the laparoscopic management of benign liver disease. The aim of the study is to analyze technical feasibility and evaluate immediate and long-term...
Antibody to intermediate filaments of the cytoskeleton.
Osung, O A, Chandra, M, Holborow, E J
IgM antibodies against cultures of intermediate filaments (IMF) of the cytoskeleton were demonstrated by immunofluorescence in the sera of 94 (80%) of 118 patients with seropositive rheumatoid...
Osung, O A, Chandra, M, Holborow, E J
Cryostat section of synovial tissue from patients with rheumatoid arthritis, ankylosing spondylitis, osteoarthrosis, pigmented villonodular synovitis, and from a normal knee were studied by indirect...
Gagné, S. M., Tsuda, S., Li, M. X., Chandra, M., Smillie, L. B., Sykes, B. D.
The backbone resonance assignments have been completed for the apo (1H and 15N) and calcium-loaded (1H, 15N, and 13C) regulatory N-domain of chicken skeletal troponin-C (1-90), using multidimensional...