基于Hough变换的天基激光测距轨迹提取算法  

Space-based Laser Ranging Trajectory Extraction Algorithm Based on Hough Transform

作　　者：董书舟 强佳[1] 舒嵘[1,2] DONG Shuzhou;QIANG Jia;SHU Rong(Key Lab.of Space Active Opto-Electronic Technology,Shanghai Institute of Technical Physics of the Chinese Academy of Sciences,Shanghai 200083,CHN;University of Chinese Academy of Sciences,Beijing 100049,CHN)

机构地区：[1]中国科学院上海技术物理研究所空间主动光电技术重点实验室,上海200083 [2]中国科学院大学,北京100049

出　　处：《半导体光电》2021年第3期430-436,共7页Semiconductor Optoelectronics

基　　金：中国科学院重点部署项目(ZDRW-KT-2019-3)。

摘　　要：天基目标测量具有全天时、不受大气干扰等优点。但与地面人卫测距相比,天基待测目标运动速度快且缺乏距离预报等先验信息,导致传统测距方法无法有效提取目标距离轨迹。为此,文章提出了一种基于Hough变换的激光测距距离轨迹提取算法,利用目标回波点之间的线性相关性将直线检测算法引入回波轨迹的提取,具有适应天基探测特性、抗噪声能力强等特点。实验结果表明,使用该方法提取的目标距离轨迹均方根误差优于2.72m。上述方法可以准确地提取高速移动目标的距离轨迹,为后续空间非合作目标的距离轨迹提取提供了新的途径。Space-based target measurement has the advantages of being all-day and free from atmospheric interference,but compared with ground-based human-guarded ranging,the space-based target moves fast and the priori information such as distance prediction is not enough,which makes the traditional ranging methods fail to extract the target distance trajectory effectively.To address this problem,in this paper,a laser ranging distance trajectory extraction algorithm based on Hough transform is proposed,which uses the linear correlation between target echo points to introduce the linear detection algorithm into the extraction of echo trajectories,and has the characteristics of adapting to the characteristics of space-based detection and strong anti-noise capability.The experimental results show that the root mean square error of the distance trajectory extracted by this method is better than 2.72 m.The above method can accurately extract the distance trajectories of high-speed moving targets,providing a new way to extract the distance trajectories of subsequent spatial non-cooperative targets.

关 键 词：激光测距 HOUGH变换 改进距离门 参数空间划分 

分 类 号：TP228.5[自动化与计算机技术—检测技术与自动化装置]