Spatial decoherence compensation algorithm for a target speckle field in heterodyne detection based on frequency analysis and time translation

被引：6
|
作者：
Geng, Jinni [1 ]
Feng, Zhejun [1 ]
Cao, Changqing [1 ]
Feng, Songmeng [1 ]
Xu, Xiangkai [1 ]
Shang, Yajie [1 ]
Wu, Zengyan [1 ]
Yan, Xu [1 ]
机构：
[1] Xidian Univ, Sch Phys & Optoelect Engn, Xian 710071, Peoples R China
来源：
OPTICS EXPRESS | 2021年 / 29卷 / 24期
关键词：
NOISE; ARRAY;
D O I：
10.1364/OE.441960
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The decoherence effect of a laser caused by a speckle field seriously restricts the development of heterodyne lidar. To address this problem, we proposed a spatial decoherence compensation algorithm, whose feasibility was proved by experiments with a system featuring simple structure and convenient operation. The results demonstrated that the speed of the proposed algorithm was several orders higher than that of other algorithms and the system SNR was increased by a maximum of 1464 times after the algorithm processing. The proposed algorithm can process the signal in real time and effectively, having great application potential in long-distance weak target detection. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
引用
收藏
页码：39016 / 39026
页数：11
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