空间非合作目标未知构型重建质量评估方法  

Reconstruction Quality Assessment Method of Space Non-cooperative Target with Unknown Configuration

作　　者：李荣华[1,2] 李恒 林婷婷 王蒙 LI Rong-hua;LI Heng;LIN Ting-ting;WANG Meng(Department of Mechanical Engineering,Dalian Jiaotong University,Dalian 116028,China;Shanghai Institute of Aerospace Systems,Shanghai 201109,China)

机构地区：[1]大连交通大学机械工程学院,大连116028 [2]上海宇航系统工程研究所,上海201109

出　　处：《宇航学报》2021年第10期1317-1326,共10页Journal of Astronautics

基　　金：辽宁省教育厅基本研究项目(LJKZ0475);辽宁省高等教育创新人才支持计划(LR2018050)。

摘　　要：针对基于线阵激光雷达扫描重建获得的三维模型,因其构型未知,无法通过模型对比进行质量评估,本文着重研究未知构型的质量评估方法。首先,采用3σ优化的最小二乘法对空间非合作目标点云平面与直线进行拟合;其次,从点云密度、重建几何性质、表面完整度进行重建质量评估,再基于上述三种评估方法建立多因素综合评估数学模型,对三维重建结果进行满意度质量评估;最后通过仿真实验验证评估方法,获得多因素综合评估满意度为95.5889%,实验结果表明该评估方法合理且具有参考价值。该研究不仅能验证基于线阵激光雷达三维重建结果的精度,还为空间非合作目标未知构型质量评估提供一种新的研究思路。For a 3D(Three-dimensional)model obtained based on the scanning and reconstruction of the linear array lidar,it is impossible to compare the models to evaluate the quality because of its unknown configuration,so we focus on the quality evaluation method of the unknown configuration.Firstly,the 3σoptimized least square method is used to fit the plane and straight line of the space non-cooperative target point cloud.Secondly,we evaluate the reconstruction quality from the point cloud density,reconstruction geometric properties,and surface integrity,establish a multi-factor comprehensive evaluation mathematical model based on the above three evaluation methods,and then evaluate the satisfaction quality of the 3D reconstruction results.Finally,the evaluation method is verified by the simulation experiments with a multi-factor comprehensive evaluation satisfaction rate of 95.5889%.The experimental results show that the evaluation method is reasonable and has reference value.The research can not only verify the accuracy of the 3D reconstruction results based on the linear array lidar,but also provide a new research idea for the quality evaluation of the unknown configuration of space non-cooperative targets.

关 键 词：航天器 空间非合作目标 三维重建 在轨服务 

分 类 号：V448.2[航空宇航科学与技术—飞行器设计]