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Proceedings Paper

Ground-based CW atmospheric Doppler performance modeling
Author(s): Richard J. Becherer; Lloyd R. Kahan
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Paper Abstract

Doppler lidar provides atmospheric wind velocity measurements at locations in the atmosphere that are remote from the lidar platform. Critical factors in lidar wind velocity measurement performance are (a) the received signal photons that are backscattered from atmospheric aerosols in the measurement region of interest, (b) the background photons that are scattered from aerosols within the lidar field of view and do not contribute to the signal but do introduce photon noise in the coherent detection receiver, and (c) the focussing of the lidar transmitter and coherent detection receiver to provide range resolution and to optimize velocity measurement performance when using a CW laser. Tbis paper models the interaction of these factors for a ground based lidar in a monostatic geometry for potential application to atmospheric research, atmospheric microburst detection for aircraft warning, and other areas. By analogy to established methods for characterizing the performance capability of other sensor systems, the lidar performance is characterized by the carrier-to-noise ratio (CNR) and by a noise equivalent scattering coefficient (NESC).

Paper Details

Date Published: 1 August 1991
PDF: 8 pages
Proc. SPIE 1416, Laser Radar VI, (1 August 1991); doi: 10.1117/12.43723
Show Author Affiliations
Richard J. Becherer, Science Applications International Corp. (United States)
Lloyd R. Kahan, Science Applications International Corp. (United States)

Published in SPIE Proceedings Vol. 1416:
Laser Radar VI
Richard J. Becherer, Editor(s)

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