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Proceedings Paper

Simulation and optimization of a coherent detection and tracking receiver for free-space laser communications
Author(s): Anton Schex; Stefan Zanner
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Paper Abstract

The simulation and optimization of a high sensitive coherent detection and tracking receiver for free-space laser communications is described. The data and the spatial tracking error signals are obtained with the same set of photodetectors, hereby avoiding systematic losses. Simulation models for the tracking tilt mirror transfer function, the diffraction limited data and tracking receiver gain functions and the performance of the digital signal processing algorithms are derived. The optimization of the telescope's Fresnel-number and of the local laser's Gaussian beamwidth for the photodetectors used in our laboratory system is described. The intermediate frequency current and signal-to-noise ratio of the data signal are compared with theoretical limits.

Paper Details

Date Published: 22 April 1996
PDF: 9 pages
Proc. SPIE 2699, Free-Space Laser Communication Technologies VIII, (22 April 1996); doi: 10.1117/12.238414
Show Author Affiliations
Anton Schex, DLR (Germany)
Stefan Zanner, DLR (Germany)

Published in SPIE Proceedings Vol. 2699:
Free-Space Laser Communication Technologies VIII
G. Stephen Mecherle, Editor(s)

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