深空探测器小天体交会段自主导航方法研究

针对深空探测任务中,与小行星交会段的自主导航问题,首先建立探测器在交会段的轨道动力学模型,并提出了2种导航观测方案:1)利用目标天体图像作为观测量;2)利用目标天体视线方向和目标天体夹角作为观测量.然后结合动力学模型和观测模型推导了2种导航方法的滤波算法公式.最后通过蒙特卡罗数值仿真分析方法,估算了2种导航方法的误差值,结果表明误差值在可接受精度范围内,验证了2种自主导航方法是可行的.

Research on Autonomous Navigation Methods of Small Bodies During Flybys

In recent ten years,countries all over the world have launched numbers of deep space probes to explore various kinds of valuable celestial bodies in the solar system.This paper researches into the autonomous orbit determination problem of encounter phase in deep space exploration task.Based on the existing international technologic analysis,two different measurement schemes are proposed for encounter orbit determination.Finally,two feasible and reliable orbit determination schemes are proposed for deep spac...