Acquisition and tracking performance measurements for a high-speed area array detector system

Ralph C. Short; Michael A. Cosgrove; David L. Clark; Anthony J. Martino; Hongwoo Park; Bernard D. Seery

doi:10.1117/12.43748

1 June 1991 Acquisition and tracking performance measurements for a high-speed area array detector system

Ralph C. Short, Michael A. Cosgrove, David L. Clark, Anthony J. Martino, Hongwoo Park, Bernard D. Seery

Proceedings Volume 1417, Free-Space Laser Communication Technologies III; (1991) https://doi.org/10.1117/12.43748
Event: Optics, Electro-Optics, and Laser Applications in Science and Engineering, 1991, Los Angeles, CA, United States

Abstract

A proof-of-concept (POC) demonstration system has been developed which demonstrates acquisition, tracking and point-ahead angle sensing for a space optical communications terminal utilizing a single high speed area array detector. The detector is the 128 x 128 pixel Kodak HS-40 photodiode array. It has 64 parallel readout channels and can operate at frames rates up to 40,000 frames/sec with rms readout noise of 20 photoelectrons. A windowing scheme and special purpose digital signal processing electronics are employed to implement acquisition and tracking algorithms. The system operates at greater than 1 kHz sample (frame) rates. Acquisition can be performed in as little as 30 milliseconds with less than 1 picowatt of 0.85 micron beacon power on the detector. At the same power level, the rms tracking accuracy is approximately 1/16 pixel. Results of system analysis and measurements using the POC system are presented.

Citation Download Citation

Ralph C. Short, Michael A. Cosgrove, David L. Clark, Anthony J. Martino, Hongwoo Park, and Bernard D. Seery "Acquisition and tracking performance measurements for a high-speed area array detector system", Proc. SPIE 1417, Free-Space Laser Communication Technologies III, (1 June 1991); https://doi.org/10.1117/12.43748

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