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Proceedings Paper

Evaluation of far-field pattern of laser transmitter onboard the Laser Communication Equipment
Author(s): Morio Toyoshima; Takayuki Fukazawa; Masahiro Toyoda; Tetsuo Takahashi; Motokazu Shikatani; Yoshinori Arimoto; Kenichi Araki; Tadashi Aruga
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Paper Abstract

A far-field pattern of an onboard laser transmitter was measured using a trans-atmospheric optical link over 35,000 km range between a satellite and an optical ground station. The acquisition of the far-field pattern is made in use of a new proposed statistical analysis of downlink irradiance data obtained at the ground station. Tracking/pointing statistical characteristics of the transmitter is taken into account in order to estimate downlink irradiance when there would be no atmospheric scintillation effects. The peak directive gain of the downlink laser beam was 104.3 dB. The beam width was 28.5 X 17.5 (mu) rad. These results were consistent with the results at a laboratory test performed before launch of the satellite.

Paper Details

Date Published: 24 April 1997
PDF: 11 pages
Proc. SPIE 2990, Free-Space Laser Communication Technologies IX, (24 April 1997); doi: 10.1117/12.273704
Show Author Affiliations
Morio Toyoshima, Communications Research Lab. (Japan)
Takayuki Fukazawa, Communications Research Lab. (Japan)
Masahiro Toyoda, Communications Research Lab. (Japan)
Tetsuo Takahashi, Communications Research Lab. (Japan)
Motokazu Shikatani, Communications Research Lab. (Japan)
Yoshinori Arimoto, Communications Research Lab. (Japan)
Kenichi Araki, Communications Research Lab. (Japan)
Tadashi Aruga, Communications Research Lab. (Japan)

Published in SPIE Proceedings Vol. 2990:
Free-Space Laser Communication Technologies IX
G. Stephen Mecherle, Editor(s)

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