Lightweight laser communications terminal for low-Earth-orbit satellite constellations

Robert G. Marshalek; David L. Begley

doi:10.1117/12.184647

16 August 1994 Lightweight laser communications terminal for low-Earth-orbit satellite constellations

Robert G. Marshalek, David L. Begley

Proceedings Volume 2123, Free-Space Laser Communication Technologies VI; (1994) https://doi.org/10.1117/12.184647
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

An optical terminal is described that supports bidirectional communications among a constellation of low-Earth-orbit satellites. The concept uses AlGaAs semiconductor diode laser transmitters, a silicon charge-coupled device (CCD) acquisition array, and a silicon-avalanche-quadrant detector for fine tracking and 10-Mbps communications over a 5000-km range. The 13-lb laser terminal consumes 13 watts of peak spacecraft power. Order-of-magnitude data rate increases can be supported with little terminal impact by incorporating diode- laser master oscillator/power amplifier (MOPA) transmitter enhancements into the design.

Citation Download Citation

Robert G. Marshalek and David L. Begley "Lightweight laser communications terminal for low-Earth-orbit satellite constellations", Proc. SPIE 2123, Free-Space Laser Communication Technologies VI, (16 August 1994); https://doi.org/10.1117/12.184647

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