火星探测器自主天文导航方法研究

Research on autonomous celestials navigation method of Mars probe

提出了一种基于天文观测的火星探测器自主天文导航方法,该方法利用由星敏感器视场内测量得到的火星及其卫星和某一恒星之间的星光角距,结合火星探测器的运动模型,通过Unscented卡尔曼滤波方法,即可获得高精度的火星探测器实时位置信息,计算机仿真结果证明了该方法的有效性。

This thesis suggests an autonomous celestial navigation method which is based on celestial observation,which uses the angle informa-tion of Mars and its satellites（ starlight angular distance）,combined with the movement model of Mars probe. Then we can figure out the precise position（ real time）of Mars probe with Unscented Kalman filter. The result from computer simulation proved to be effective.