红外与毫米波学报2018，Vol.37Issue(1)：35-41,7.DOI:10.11972/j.issn.1001-9014.2018.01.008
空间激光通信中精跟踪系统的实现与优化
Realization and optimization of fine tracking system of free space laser communication
摘要
Abstract
The composition and control structure of fine tracking system of free space laser communication are briefly described.The error sources of the beacon positioning of fine tracking detector using centroid algorithm of the acquisition,tracking and pointing system are analyzed.And the Fourier frequency domain of the beacon positioning process of fine tracking detector is analyzed too.The theoretical scheme for eliminating the systematic error of centroid algorithm is derived,that is,the product of the beacon light wavelength and the F number of the fine tracking system need to be larger than the pixel size of the fine tracking detector.The selection process of the key parameters in the implementation of the fine tracking system is analyzed,and considering the coupling relation of system parameters of fine tracking system,in order not to lose fine tracking field of view,the optimization of fine tracking system by adding aperture diaphragm before fine tracking detector lens is implemented for eliminating the systematic error of centroid algorithm.The theoretical calculation and experimental results show that when the aperture diameter is less than 9.32 mm,the relative aperture of the fine tracking system is less than 0.045,and the fine tracking error is only 0.03 pixel,and the tracking accuracy is improved by 1.9 times.关键词
光通信/捕获、跟踪、瞄准/定位精度/质心算法/系统误差Key words
optical communications/acquisition/tracking/pointing/positioning accuracy/centroid algorithm/systematic error分类
信息技术与安全科学引用本文复制引用
陈少杰,张亮,吴金才,李长昆,王建宇..空间激光通信中精跟踪系统的实现与优化[J].红外与毫米波学报,2018,37(1):35-41,7.基金项目
国家自然科学基金(61302181)Supported by the National Natural Science Foundation of China (61302181) （61302181）
