【摘要】 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。更多还原

【Abstract】 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.更多还原