Comparison of performance capabilities of spread spectrum coherent and direct detection CO2 DIAL systems

Victor H. Hasson; Mark A. Kovacs

doi:10.1117/12.454417

29 January 2002 Comparison of performance capabilities of spread spectrum coherent and direct detection CO₂ DIAL systems

Victor H. Hasson, Mark A. Kovacs

Author Affiliations +

Proceedings Volume 4538, Optics in Atmospheric Propagation and Adaptive Systems IV; (2002) https://doi.org/10.1117/12.454417
Event: International Symposium on Remote Sensing, 2001, Toulouse, France

Abstract

This paper compares the performance of a conventional direct detection CO₂ Differential Absorption Lidar (DIAL) system with the coherent spread spectrum approach developed and patented by Textron. The analysis shows that the coherent approach is far superior in terms of maximum attainable standoff range at a specified transmitter average power and substantially reduced system power and associated size and weight at a predetermined range. The requirements on local oscillator stability are fairly relaxed and the spread spectrum/coherent DIAL concept is fairly easy to implement. Some comparative validation data are provided.

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Victor H. Hasson and Mark A. Kovacs "Comparison of performance capabilities of spread spectrum coherent and direct detection CO₂ DIAL systems", Proc. SPIE 4538, Optics in Atmospheric Propagation and Adaptive Systems IV, (29 January 2002); https://doi.org/10.1117/12.454417

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