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Application of a single area array detector for acquisition, tracking and point-ahead in space optical communicationsFunctions of acquisition, tracking, and point-ahead in space optical communications are being combined into a single system utilizing an area array detector. An analysis is presented of the feasibility concept. The key parameters are: optical power less than 1 pW at 0.86 micrometer, acquisition in less than 30 seconds in an acquisition field of view (FOV) of 1 mrad, tracking with 0.5 microrad rms noise at 1000 Hz update rate, and point ahead transfer function precision of 0.25 microrad over a region of 150 microrad. Currently available array detectors were examined. The most demanding specifications are low output noise, a high detection efficiency, a large number of pixels, and frame rates over 1kHz. A proof of concept (POC) demonstration system is currently being built utilizing the Kodak HS-40 detector (a 128 x 128 photodiode array with a 64 channel CCD readout architecture which can be operated at frame rates as high as 40,000/sec). The POC system implements a windowing scheme and special purpose digital signal processing electronic for matched filter acquisition and tracking algorithms.
Document ID
19900044921
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Clark, D. L.
(Eastman Kodak Co. Rochester, NY, United States)
Cosgrove, M.
(Eastman Kodak Co. Rochester, NY, United States)
Van Vranken, R.
(Eastman Kodak Co. Rochester, NY, United States)
Park, H.
(Eastman Kodak Co. Rochester, NY, United States)
Fitzmaurice, M .
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Communications And Radar
Meeting Information
Meeting: Optomechanical Design of Laser Transmitters and Receivers
Location: Los Angeles, CA
Country: United States
Start Date: January 16, 1989
End Date: January 17, 1989
Sponsors: SPIE, New Mexico State Univ., JPL
Accession Number
90A31976
Distribution Limits
Public
Copyright
Other

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