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Greedy algorithm-based compensation for target speckle phase in heterodyne detection
Infrared Physics & Technology ( IF 3.3 ) Pub Date : 2021-04-20 , DOI: 10.1016/j.infrared.2021.103753
Songmeng Feng , Zhejun Feng , Changqing Cao , Xiaodong Zeng , Jinni Geng , Jing Li , Liangqi Liu , Qifan Wu

Speckle is a significant problem that hinders optical heterodyne signal detection via the array detector method, with the efficiency of existing phase compensation algorithms severely limited by the number of array elements. This study simplifies the original phase compensation model and proposes a phase compensation calculation method based on a greedy algorithm. Numerical and experimental results show that the proposed algorithm is stable and 3–4 orders of magnitude faster than the others, avoiding the performance degradation typically associated with an increasing array number, enabling real-time data processing. This suggests that high application potential in areas such as synthetic aperture lidar and laser vibration measurement.



中文翻译:

基于贪婪算法的外差检测中目标斑点相位补偿

斑点是一个严重的问题,阻碍了通过阵列检测器方法进行光学外差信号检测,现有相位补偿算法的效率受到阵列元件数量的严重限制。该研究简化了原有的相位补偿模型,提出了一种基于贪婪算法的相位补偿计算方法。数值和实验结果表明,所提出的算法是稳定的,并且比其他算法快3–4个数量级,避免了通常与阵列数量增加相关的性能下降,从而可以进行实时数据处理。这表明在合成孔径激光雷达和激光振动测量等领域具有很高的应用潜力。

更新日期:2021-05-07
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