CAJ | 학술논문

针对火星探测中着陆器的初定位问题．提出了一种利用单个轨道环绕器为着陆器进行无线电定位的计算方法。首先根据投影法求解着陆器的位置初值，再使用最小二乘法，利用一段时间内的轨道器的位置及其与着陆器的距离数据，求解着陆器的经纬度。通过与卫星工具包（satellite Tool Kit，STK）软件的计算结果比较，表明此方法是有效的。
침대화성탐측중착륙기적초정위문제．제출료일충이용단개궤도배요기위착륙기진행무선전정위적계산방법。수선근거투영법구해착륙기적위치초치，재사용최소이승법，이용일단시간내적궤도기적위치급기여착륙기적거리수거，구해착륙기적경위도。통과여위성공구포（satellite Tool Kit，STK）연건적계산결과비교，표명차방법시유효적。
The location of the lander is a key problem in Mars exploration missions.In this article, a novel radio positioning method for the Mars lander using a single orbiter is introduced. Firstly, the initial position of the lander is solved by projection method. Secondly, the geocentric latitude and longitude of the lander is obtained with least square method, using the orbiter's position data and the relative distance between them. The location method is validated by comparison with STK results.