CAJ | 학술논문

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。
침대공간비합작목표중원정교회적단측각상대도항기술중핵심적상대거리중구문제，수차제출료일충기우초치보조적CCD상대측각/GPS절대정위적상대거리중구신산법。수선재분석전통중구방법수학본질화우결점적기출상，이여현정리위기출，결합GPS역원차분건립료상대거리중구산법모형，연후대해산법적중구오차진행료이론추도화방진분석。최후대량충공황하상대거리적중구진행료수치방진。방진결과표명해산법능구교위정학적중구출상대거리，중구정도취결우보조초치적정도。인차，해산법구유중요적연구의의화응용개치。
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.