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Proceedings Paper

Feasibility study on the tracking of geodesic satellites in laser communications demonstration experiment
Author(s): Junzo Uchida; Yoshinori Arimoto
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Paper Abstract

In the first stage of laser communications experiment between the International Space Station (ISS) and several ground stations using onboard laser communications demonstration equipment (LCDE), an experiment to track and point geodesic satellites with corner cube reflectors is planned in order to evaluate the pointing/tracking performance and optical/mechanical misalignments of LCDE. As a visibility analysis of existing geodesic satellites from LCDE, we counted the number of the satellite passes which continue more than five minutes in the year 2004 and found that there are 20 passes for EGS and five passes for TOPEX. In order to detect the sunlight reflected from the satellite body and to start the tracking, we need a sensitive tracking sensor whose sensitivity is better than -95 dBm. This sensitivity will be achieved by using a quadrant photo- detector with a GaAsP photo-cathode and optimizing the sensor field-of-view. To evaluate LCDE's pointing performance, a pulsed laser at 1552 nm wavelength will be transmitted to the geodesic satellite, and the light reflected from the corner cube reflector on the satellite will be received by LCDE. The current power budget shows the signal-to-noise ratio of the detection of the returned laser pulse will be about 5 dB.

Paper Details

Date Published: 20 June 2001
PDF: 10 pages
Proc. SPIE 4272, Free-Space Laser Communication Technologies XIII, (20 June 2001); doi: 10.1117/12.430792
Show Author Affiliations
Junzo Uchida, National Space Development Agency of Japan (Japan)
Yoshinori Arimoto, National Space Development Agency of Japan (Japan)

Published in SPIE Proceedings Vol. 4272:
Free-Space Laser Communication Technologies XIII
G. Stephen Mecherle, Editor(s)

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