火星探测器对地激光通信相对运动研究与仿真

Study and Simulation of Relative Motion in Mars and Earth Laser Communication

火星探测是深空探测的一部分,针对环火探测器对地的激光通信系统,为了确定激光链路的传输方向,本文探讨了一种火星探测器对地激光通信相对运动研究与仿真的初步方法,来确定环火探测器相对于地球的一些基本的位置参数。首先根据开普勒定律、卫星的动力学方程与坐标转换原理建立探测器对地的激光通信系统的数学模型,然后通过Matlab进行进一步的计算与仿真,得到了主要参数方位角以及俯仰角的变化范围。本文探讨了相关的坐标系,在此基础上进行了时空基准的转换,最终确定环火探测器对地球的指向角度变化,对环火探测器激光通信系统的设计提供了依据。

Mars exploration is a part of deep space exploration, to get the direction of laser link in Mars probe and Earth laser communication system, in this paper, a preliminary design of study and simulation of relative motion in Mars and Earth laser communication is discussed to confirm the position parameters of the coarse tracking turntable on detector against Earth. Firstly, according to Kepler＆#39;s laws, dynamics equation of satellite, principle of coordinate trans-formation to establish the mathematical model of Mars probe and Earth laser communication system,then by the Matlab simulation calculation to get the scope change of azimuth and elevation. This article discusses the relative coordinate sys-tem and the conversion of the space-time datum, eventually determines the pointing angle of Mars detector to Earth and provides a basis of the design of Mars probe and Earth laser communication system.