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Proceedings Paper

Space communication and radar with lasers
Author(s): W. J. Witteman
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Paper Abstract

Sensitive heterodyne detection with lasers applied .to radar and satellite communication is seriously hampered by the large electronic bandwidth due to random Doppler shift and frequency instability. These drawbacks can be circumvented by dual signal heterodyne detection. The system consists of mixing the local oscillator with two signal beams and the lock-in amplification at the beat frequency of the two intermediate frequencies. The signal modulation is demodulated by the lock-in amplification. A detailed analysis of the accompanying noise is given. The derived NEP is much smaller than that of a conventional heterodyne system. As examples, the system is applied to radar and space communication.

Paper Details

Date Published: 12 October 2005
PDF: 11 pages
Proc. SPIE 5958, Lasers and Applications, 59581I (12 October 2005); doi: 10.1117/12.620805
Show Author Affiliations
W. J. Witteman, Univ. of Twente (Netherlands)


Published in SPIE Proceedings Vol. 5958:
Lasers and Applications
Krzysztof M. Abramski; Antonio Lapucci; Edward F. Plinski, Editor(s)

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