单测角相对导航的相对距离重构新算法  

Novel reconstructing algorithm of relative distances for angle-only relative navigation

作　　者：龚柏春[1,2] 罗建军[1,2] 马悦 

机构地区：[1]西北工业大学航天学院,西安710072 [2]航天飞行动力学技术重点实验室,西安710072 [3]96271部队,洛阳471600

出　　处：《中国惯性技术学报》2014年第3期340-345,共6页Journal of Chinese Inertial Technology

基　　金：国家自然科学基金项目(61004124);西北工业大学博士论文创新基金项目(CX201404)

摘　　要：针对空间非合作目标中远程交会的单测角相对导航技术中核心的相对距离重构问题,首次提出了一种基于初值辅助的CCD相对测角/GPS绝对定位的相对距离重构新算法。首先在分析传统重构方法数学本质和优缺点的基础上,以余弦定理为基础,结合GPS历元差分建立了相对距离重构算法模型,然后对该算法的重构误差进行了理论推导和仿真分析。最后对两种工况下相对距离的重构进行了数值仿真。仿真结果表明该算法能够较为精确的重构出相对距离,重构精度取决于辅助初值的精度。因此,该算法具有重要的研究意义和应用价值。Aiming at the key issue of the relative distance re-constructing in the angle-only relative navigation for mid and far-range rendezvous with space non-cooperative target, a novel algorithm is presented based on GPS absolute positioning, CCD relative angles of LOS measuring and an aided initial value of the relative distance. The mathematical substance and the characteristic of the traditional method are analyzed. And a re-constructing model is established based on the triangle principle integrated with the differential value between the sequences of GPS positioning at two different epochs. After that, the error of the reconstructing is analyzed by means of mathematical derivation and simulation. At last, two cases simulation of relative distance re-constructing is conducted, and the results show that the proposed algorithm can estimate the relative distance, and the estimation precision depends on the performance of the initial relative distance aided exterior. Thus, the proposed algorithm has important research and application value.

关 键 词：空间非合作目标 相对导航 单测角 相对距离 

分 类 号：V448.22+4[航空宇航科学与技术—飞行器设计]