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Proceedings Paper

Receiving characteristics of coherent LADAR under partially coherent condition
Author(s): Lily Pu; Yu Zhou; Baoliang Shen; Jianfeng Sun; Liren Liu
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Paper Abstract

In a coherent LADAR system, the spatial coherent performance of the return signal will be affected by the scattering of target object and atmospheric effect, which thus has influence on the mixing efficiency, Singal-to-noise ratio and receiving field of view. Since the practical wave front correlation of return signal beam is complex for coherent LADAR, here we will confine ourselves to a simple model that the return signal field has uniform distributed irradiance and is partially coherent, and the local oscillator beam adopts a Gauss mode. In this paper we research the variance of the mixing efficiency, signal-to-noise ratio and field of view with the influence of the signal spatial coherence width and collecting aperture radius, and give some guiding suggestions on the design of heterodyne receiver for coherent LADAR .

Paper Details

Date Published: 28 August 2010
PDF: 14 pages
Proc. SPIE 7818, Adaptive Coded Aperture Imaging, Non-Imaging, and Unconventional Imaging Sensor Systems II, 78180S (28 August 2010); doi: 10.1117/12.859966
Show Author Affiliations
Lily Pu, Shanghai Institute of Optics and Fine Mechanics (China)
Yu Zhou, Shanghai Institute of Optics and Fine Mechanics (China)
Baoliang Shen, Shanghai Institute of Optics and Fine Mechanics (China)
Jianfeng Sun, Shanghai Institute of Optics and Fine Mechanics (China)
Liren Liu, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 7818:
Adaptive Coded Aperture Imaging, Non-Imaging, and Unconventional Imaging Sensor Systems II
Jean J. Dolne; Stanley Rogers; Thomas J. Karr; David P. Casasent; Victor L. Gamiz, Editor(s)

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