Atmospheric Propagation Effects On Coherent Laser Radars

David M. Papurt; Jeffrey H. Shapiro; Robert C. Harney

doi:10.1117/12.932580

30 April 1982 Atmospheric Propagation Effects On Coherent Laser Radars

David M. Papurt, Jeffrey H. Shapiro, Robert C. Harney

Proceedings Volume 0300, Physics and Technology of Coherent Infrared Radar I; (1982) https://doi.org/10.1117/12.932580
Event: 25th Annual Technical Symposium, 1981, San Diego, United States

Abstract

Coherent laser radars offer new technical options for a variety of target detection and imaging scenarios. Such systems will, of necessity, be subject to the vagaries of atmospheric optical propagation, viz., turbulence, absorption, and scattering. This paper presents a mathematical system model for a compact heterodyne-reception laser radar which incorporates the statistical effects of target speckle and glint, local-oscillator shot noise, and propagation through either turbulent or turbid atmospheric conditions. Using this model, results are developed for the imace signal-to-noise ratio and target resolution capability of the radar. Clear-weather propagation through the turbulent atmosphere is shown to affect the compact laser radar primarily through scintillation. Low-visibility weather propagation is shown to degrade the resolution of the radar. Sample performance calculations for a realistic infrared radar are Included.

Citation Download Citation

David M. Papurt, Jeffrey H. Shapiro, and Robert C. Harney "Atmospheric Propagation Effects On Coherent Laser Radars", Proc. SPIE 0300, Physics and Technology of Coherent Infrared Radar I, (30 April 1982); https://doi.org/10.1117/12.932580

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