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Proceedings Paper

Development principles of frequency-modulated CW-ladar for remote detection of atmospheric trace constituents
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Paper Abstract

In this paper we present a general methodology for a frequency-modulated ladar/lidar (CW-FM-ladar/lidar) concept based on principles of both CW-FM-range-finding and modulation spectroscopy, together with modern techniques of optical signal transmission using tunable laser diodes, signal detection and heterodyne processing. We develop a mathematical description of trace gas detection using CW-LD ladar developing the relationship between the heterodyne echo-signal amplitudes and frequencies and trace gas concentration for each range. In particular, precise range and gas retrieval resolution limits based on the transmitting signal modulation and absorption line parameters are obtained.

Paper Details

Date Published: 15 September 2004
PDF: 10 pages
Proc. SPIE 5547, Remote Sensing in Atmospheric Pollution Monitoring and Control, (15 September 2004); doi: 10.1117/12.560102
Show Author Affiliations
Ravil R. Agishev, CUNY/City College (United States)
Rafael K. Sagdiev, Kazan State Technical Univ. (Russia)
Barry Gross, CUNY/City College (United States)
Fred Moshary, CUNY/City College (United States)
Alexander Gilerson, CUNY/City College (United States)
Samir Ahmed, CUNY/City College (United States)
Adolfo Comeron, Univ. Politecnica de Catalunya (Spain)

Published in SPIE Proceedings Vol. 5547:
Remote Sensing in Atmospheric Pollution Monitoring and Control
Allen Chu; James Szykman, Editor(s)

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