Detection Efficiency For Large-Aperture Coherent Laser Radars

J. Carl Leader

doi:10.1117/12.932579

30 April 1982 Detection Efficiency For Large-Aperture Coherent Laser Radars

J. Carl Leader

Proceedings Volume 0300, Physics and Technology of Coherent Infrared Radar I; (1982) https://doi.org/10.1117/12.932579
Event: 25th Annual Technical Symposium, 1981, San Diego, United States

Abstract

The heterodyne detection efficiency of a large-aperture, coherent laser radar, defined as the actual signal-to-noise ratio (SNR) divided by the ideal SNR, is derived for detected phase-front distortions resulting from atmospheric turbulence or diffuse target scattering. Specific expressions are developed for a general target reflectivity distribution and a receiver having a finite-detection aperture, local-oscillator aperture, and local-oscillator beam. Numerical calculations of the heterodyne efficiency (using the derived expressions) show the reduction in heterodyne detection-efficiency resulting from atmospheric turbulence, near-field effects, and target speckle.

Citation Download Citation

J. Carl Leader "Detection Efficiency For Large-Aperture Coherent Laser Radars", Proc. SPIE 0300, Physics and Technology of Coherent Infrared Radar I, (30 April 1982); https://doi.org/10.1117/12.932579

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available