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Proceedings Paper

Data analysis results from the KODEN experiments
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Paper Abstract

The first bi-directional laser communications demonstration between the optical ground station developed by the National Institute of Information and Communications Technology (NICT) located in Koganei, Tokyo and the Optical Inter-orbit Communication Engineering Test Satellite (OICETS) was successfully conducted in March, May, and September, 2006. The Kirari Optical communication Demonstration Experiments with the NICT optical ground station (KODEN) were jointly conducted by the Japan Aerospace Exploration Agency (JAXA) and NICT. Data from the uplink and downlink optical communication links were analyzed. For the downlink, the scintillation index agreed well with the theoretical results calculated based on the strong fluctuation theory. The aperture averaging effect was the dominant factor in reducing the variation of the downlink signals. The probability density functions as a function of elevation angles were measured and compared with the theoretical model, showing good agreement. For the uplink, the scintillation index disagreed with the calculated results based on the strong fluctuation theory. The multiple beam effect of the uplink transmission with large beams will have an additional reduction factor, which will help to establish ground-to-satellite laser communication links in the future. Four laser beams transmitted from the optical ground station to the OICETS satellite also helped to reduce the optical signal's intensity fluctuation due to atmospheric turbulence.

Paper Details

Date Published: 25 September 2007
PDF: 12 pages
Proc. SPIE 6709, Free-Space Laser Communications VII, 67091C (25 September 2007); doi: 10.1117/12.737059
Show Author Affiliations
Morio Toyoshima, National Institute of Information and Communications Technology (Japan)
Yoshihisa Takayama, National Institute of Information and Communications Technology (Japan)
Hiroo Kunimori, National Institute of Information and Communications Technology (Japan)
Takashi Jono, Japan Aerospace Exploration Agency (Japan)
Katsuyoshi Arai, Japan Aerospace Exploration Agency (Japan)


Published in SPIE Proceedings Vol. 6709:
Free-Space Laser Communications VII
Arun K. Majumdar; Christopher C. Davis, Editor(s)

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