Speckle reduction of synthetic aperture imaging ladar based on wavelength characteristics

被引：4
|
作者：
Xu, Qian [1 ]
Sun, Zhiwei [1 ]
Sun, Jianfeng [1 ]
Zhou, Yu [1 ]
Lu, Zhiyong [1 ]
Ma, Xiaoping [1 ]
Liu, Liren [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Key Lab Space Laser Commun & Detect Technol, Shanghai 201800, Peoples R China
来源：
CHINESE OPTICS LETTERS | 2014年 / 12卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Speckle - Backscattering - Synthetic apertures - Optical radar - Numerical methods;
D O I：
10.3788/COL201412.080301
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We propose a speckle-reduction method based on wavelength characteristics of speckle effect in synthetic aperture imaging ladar (SAIL). The return signal, which is the back scattering field with speckle effect from the rough surface of target, can be integrated over N chirp periods and heterodyne detected with a local-oscillator signal. After performing image processing respectively, the final image can be regarded as the incoherent superposition of the N sub-images. Numerical simulations indicate the effectiveness of this method. Our research may facilitate practical applications of SAIL.
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收藏
页数：5
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