Receiving characteristics of coherent LADAR under partially coherent condition

Lily Pu; Yu Zhou; Baoliang Shen; Jianfeng Sun; Liren Liu

doi:10.1117/12.859966

28 August 2010 Receiving characteristics of coherent LADAR under partially coherent condition

Lily Pu, Yu Zhou, Baoliang Shen, Jianfeng Sun, Liren Liu

Proceedings Volume 7818, Adaptive Coded Aperture Imaging, Non-Imaging, and Unconventional Imaging Sensor Systems II; 78180S (2010) https://doi.org/10.1117/12.859966
Event: SPIE Optical Engineering + Applications, 2010, San Diego, California, United States

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 .

Citation Download Citation

Lily Pu, Yu Zhou, Baoliang Shen, Jianfeng Sun, and Liren Liu "Receiving characteristics of coherent LADAR under partially coherent condition", Proc. SPIE 7818, Adaptive Coded Aperture Imaging, Non-Imaging, and Unconventional Imaging Sensor Systems II, 78180S (28 August 2010); https://doi.org/10.1117/12.859966

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