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一种适用于捷联探测器的空间目标搜索算法
田源,宿敬亚,王俊波
0
(北京航天长征飞行器研究所,北京 100076;北京电子工程总体研究所,北京 100854)
摘要:
针对空间目标的搜索问题,提出了一种适用于捷联探测器的目标搜索算法。无论探测器是否能够获取目标方位的先验信息,该算法都能够使得搜索轨迹覆盖探测球面,确保目标的成功捕获。该算法分析了目标与探测器间相对运动以及姿态控制精度等因素对搜索轨迹的影响,给出了螺旋搜索轨迹重叠区域与相对运动角速度、姿态控制精度间的约束关系。对于算法生成的目标搜索轨迹,采用单轴定向姿态控制的方式给出了探测球面上搜索轨迹与姿态控制误差信号间的转换方法。最后通过典型情况下的仿真算例对算法进行了验证,仿真结果表明,无论是否具备目标方位先验信息,该算法都能够有效发现目标。
关键词:  捷联探测器  空间目标  目标搜索  姿态控制
DOI:
基金项目:
Space Target Searching Algorithm for a Strapdown Seeker
TIAN Yuan,XIU Jing-ya,WANG Jun-bo
(Beijing Institute of Space Long March Vehicle, Beijing 100076, China;Beijing Institute of Electronic System Engineering, Beijing 100854, China)
Abstract:
Aiming at the problem of space target search, a space target searching algorithm is proposed for a strapdown seeker. The surface of the searching sphere can be covered by the searching trajectory and the successful acquisition can be guaranteed by this algorithm no matter the prior information of the target's orientation is given or not. The influence of the target-seeker relative angular velocity and the accuracy of attitude control on the algorithm are analyzed. The restrictions among the spiral searching trajectory, the target-seeker relative angular velocity and the attitude control accuracy are presented. The generation method of the control feedback error signal based on single-axis attitude control is provided for the algorithm. The simulation results show the validity of the acquisition of the target whether the prior information of the target's orientation is given or not.
Key words:  Strapdown seeker  Space target  Target search  Attitude control

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