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Proceedings Paper

Atmospheric Propagation Effects On Coherent Laser Radars
Author(s): David M. Papurt; Jeffrey H. Shapiro; Robert C. Harney
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Paper 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.

Paper Details

Date Published: 30 April 1982
PDF: 14 pages
Proc. SPIE 0300, Physics and Technology of Coherent Infrared Radar I, (30 April 1982); doi: 10.1117/12.932580
Show Author Affiliations
David M. Papurt, Massachusetts Institute of Technology (United States)
Jeffrey H. Shapiro, Massachusetts Institute of Technology (United States)
Robert C. Harney, Massachusetts Institute of Technology (United States)

Published in SPIE Proceedings Vol. 0300:
Physics and Technology of Coherent Infrared Radar I
Robert C. Harney, Editor(s)

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