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Proceedings Paper

Simplified lasercom system architecture using a disturbance-free platform
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Paper Abstract

A simplified laser communications (lasercom) system architecture, primarily for a deep-space flight transceivers, can be realized by decoupling the lasercom optical components from the host spacecraft using a disturbance-free platform (DFP) developed by Lockheed Martin Space System Company. Unlike conventional lasercom system architectures where a high bandwidth control loop is used to stabilize the optical line-of-sight in the presence of platform disturbance, the DFP package isolates the optical train from the high frequency platform jitter produced by the host. By preventing the vibration from coupling into the optics train, the need for a high bandwidth beam stabilization control loop (including fast steering mirror, detectors, controls and the associated relay optics) is eliminated with possible mass savings. Effective isolation of the platform jitter also enables the optical focal plane array to operate at a much longer integration time, thus enabling the use of either faint stars or a weak beacon as a pointing reference. This feature can allow the same lasercom system architecture to be employed for deep space and some near Earth applications, and can potentially enable deep space return signal pointing without the need of an uplink beacon.

Paper Details

Date Published: 1 March 2006
PDF: 6 pages
Proc. SPIE 6105, Free-Space Laser Communication Technologies XVIII, 610505 (1 March 2006); doi: 10.1117/12.660264
Show Author Affiliations
Chien-Chung Chen, Jet Propulsion Lab. (United States)
Hamid Hemmati, Jet Propulsion Lab. (United States)
Abhijit Biswas, Jet Propulsion Lab. (United States)
Gerardo Ortiz, Jet Propulsion Lab. (United States)
William Farr, Jet Propulsion Lab. (United States)
Nelson Pedreiro, Lockheed Martin Space Systems (United States)

Published in SPIE Proceedings Vol. 6105:
Free-Space Laser Communication Technologies XVIII
G. Stephen Mecherle, Editor(s)

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