Computer Science – Performance
Scientific paper
Apr 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996spie.2699..218s&link_type=abstract
Proc. SPIE Vol. 2699, p. 218-226, Free-Space Laser Communication Technologies VIII, G. Stephen Mecherle; Ed.
Computer Science
Performance
Scientific paper
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.
Schex Anton
Zanner Stefan
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