Atmospheric trace constituent detection by CW-FM-LD-ladar: a concept development

Ravil R. Agishev; Rafael K. Sagdiev; Barry M. Gross; Fred Moshary; Alexander Gilerson; Samir A. Ahmed; Adolfo Comeron

doi:10.1117/12.564439

13 September 2004 Atmospheric trace constituent detection by CW-FM-LD-ladar: a concept development

Ravil R. Agishev, Rafael K. Sagdiev, Barry M. Gross, Fred Moshary, Alexander Gilerson, Samir A. Ahmed, Adolfo Comeron

Proceedings Volume 5412, Laser Radar Technology and Applications IX; (2004) https://doi.org/10.1117/12.564439
Event: Defense and Security, 2004, Orlando, Florida, United States

Abstract

A general methodology for a spectroscopic continuous-wave, frequency-modulated ladar (CW-FM-ladar) 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 are presented. A mathematical description of trace gas detection using CW-LD ladar is developed including 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 developed.

Citation Download Citation

Ravil R. Agishev, Rafael K. Sagdiev, Barry M. Gross, Fred Moshary, Alexander Gilerson, Samir A. Ahmed, and Adolfo Comeron "Atmospheric trace constituent detection by CW-FM-LD-ladar: a concept development", Proc. SPIE 5412, Laser Radar Technology and Applications IX, (13 September 2004); https://doi.org/10.1117/12.564439

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