基于波达方向估计的相对位姿测量系统  

Relative position and attitude determination system based on direction of arrival estimation

作　　者：王韬[1] 石为人[2] 杨力生[1] 付连庆[1] 曹海林[1] 

机构地区：[1]重庆大学通信与测控中心,重庆400044 [2]重庆大学自动化学院,重庆400044

出　　处：《仪器仪表学报》2010年第12期2706-2711,共6页Chinese Journal of Scientific Instrument

基　　金：重庆市科技攻关计划(CSTC2008BC2001);重庆大学高层次人才科研启动基金(0903005104724);中央高校基本科研业务费(CDJZR10160012)资助项目

摘　　要：光学成像敏感器位姿测量性能会随着杂散光干扰的增强和姿态角的增加而降低。针对这个问题,提出一种新型的基于伪码技术和波达方向估计技术的测量方法。目标飞行器上安装特征点,使用相互正交的伪码区分识别;追踪飞行器上安装微带共形天线阵,使用简化的波达方向估计算法并结合特征点的几何位置关系,计算目标特征点在追踪飞行器坐标系中的坐标,从而以线性解析运算的方式解出飞行器之间的相对位姿关系。理论分析和仿真实验表明,新的测量算法精度高,实时处理能力强,受杂散光干扰和姿态角变化影响小。The relative position and attitude determination performance of optical image sensor decreases with the increase of miscellaneous light interference and attitude angle.To solve this problem,a novel system is proposed in this paper,which is based on pseudo-code technology and direction of arrival estimation technology.In this system,target feature points are installed on the target spacecraft,and are identified and differentiated from each other by orthogonal pseudo-random codes.Micro strip conformal antenna array are installed on the chase spacecraft.The position of each target feature point in chase coordinate system can be calculated by comprehensively utilizing simplified direction of arrival technology and spacial geometry relationship information of the target feature points.Therefore,the relative position and attitude between target spacecraft and chase spacecraft can be solved with linear analytic computation.Theoretical analysis and simulation experiment indicate that the novel system proposed in this paper has higher accuracy and better real-time processing ability,and the effect of miscellaneous light interference and attitude angle change on measurement performance is small.

关 键 词：相对位姿测量 波达方向 伪随机码 交会对接 

分 类 号：V443.2[航空宇航科学与技术—飞行器设计]