Research on High Precision Locating of Laser Spot Center in Free-Space Laser Communication System

doi:10.1109/ITNEC52019.2021.9587297

CORC > 西安光学精密机械研究所 > 中国科学院西安光学精密机械研究所 > 光电测量技术实验室

	Research on High Precision Locating of Laser Spot Center in Free-Space Laser Communication System
	Meng, Xiangsheng 1,2,3; Ma, Caiwen 1,3; Tian, Yan 1,3; Han, Junfeng 1,3; Liang, Dongsheng 1,3
	2021-10-15
会议日期	2021-10-15
会议地点	Xi'an, China
关键词	laser communication laser spot centroid bilinear interpolation hardware implementation
DOI	10.1109/ITNEC52019.2021.9587297
页码	1625-1629
英文摘要	The gray centroid algorithm is usually used as the centroid locating algorithm in the free-space laser communication system. However, the limited spatial resolution of the image detector will produce homogenization effect, which results in gray quantization error. Moreover, the spot information will lost when we detecting the object with threshold. The two problems mentioned above will make the locating accuracy worse when using the conventional algorithm. In this paper, we use the squared weighting centroid with threshold algorithm combined with the hardware optimized interpolation subdivision algorithm to improve the locating accuracy. As the weight of bright pixels increased, and the spot information loss decreased due to subdivision, the locating accuracy improved significantly. The simulation results show that the locating accuracy has improved by at least 50%, and the experiment results confirmed that the tracking error (2.57μrad) using the improved algorithm is less than that (4.11μrad) of the conventional algorithm. © 2021 IEEE.
产权排序	1
会议录	IEEE Information Technology, Networking, Electronic and Automation Control Conference, ITNEC 2021
会议录出版者	Institute of Electrical and Electronics Engineers Inc.
语种	英语
ISBN号	9781665415989
内容类型	会议论文
源URL	[http://ir.opt.ac.cn/handle/181661/95551]
专题	西安光学精密机械研究所_光电测量技术实验室
作者单位	1.Key Laboratory of Space Precision Measurement Technology, Chinese Academy of Sciences, Xi'an; 710119, China 2.University of Chinese Academy of Sciences, Beijing; 100049, China; 3.Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China;
推荐引用方式 GB/T 7714	Meng, Xiangsheng,Ma, Caiwen,Tian, Yan,et al. Research on High Precision Locating of Laser Spot Center in Free-Space Laser Communication System[C]. 见:. Xi'an, China. 2021-10-15.