| Performance Analysis and Electronics Packaging of the Optical Communications Demonstrator (2004) | |||||||||
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| Performance analysis and electronics packaging the Optical Communications Demonstrator hfuthu Jeganathan and Steve Monacos Jet Propulsion Laboratory Oak Grove Pasadena ABSTRACT The OpticalCommunicationsDemonstrator OCD under development the Jet Propulsion Laboratory JPL laboratory basedlasercommterminaldesigned validateseveral key technologies primarily precision beam pointing high bandwidth tracking and beacon acquisition The novelty the instrument that uses single CCD array detector for both beacon acquisition and tracking and fiber coupled laser transmitter The resulting reduction design complexity can lead reduced system cost and improved system reliability this paper describerecentprogress the development the OCD terminal particularly the electronicspackaging and optical characterization with the Lasercom Test and Evaluation Station LTES Keywords OpticalCommunications LaserCommunications BeaconAcquisition Tracking Free space LEO GEO OCD INTRODUCTION Thegreatestadvantage lasercommunications over for space groundcommunications namelynarrow beamwidth poses the mosttechnical challenge The considerablysmaller transmitbeamwidth typically the order tens microradians imposes stringent demands the pointing system the presence spacecraft vibration Inaccurate beam pointing can resultinsignificantsignalfades the receiving site resultingin large number burst errors Thus oneof the important stepsin realizing space ground laser communications track the target receiver with residual poi | |||||||||
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