深空自主光学导航小行星筛选与规划方法研究

 深空探测器的自主光学导航是深空探测器自主的关键技术之一，而导航路标——小行星的选择与拍照序列的规划是深空探测自主导航的重要内容。基于探测Ivar小行星的设计方案，在导航小行星筛选方面，提出了基于小行星可见星等、距离、相对速度以及视线夹角的筛选准则，并利用综合评估的方式进行导航小行星的筛选；拍照序列规划方面，提出差额筛选的策略优化导航性价比，并利用改进的遗传算法进行规划。数学仿真结果表明，该方法能够有效地进行小行星的选择与拍照序列的规划。

Selection and Planning of Asteroids for Deep Space Autonomous Optical Navigation

A key technology that facilitates the autonomy of the spacecraft is to realize the autonomous optical navigation,in which the selection of the navigation signpost and asteroids and the planning of the photoing sequence are important matters.This paper proposes criterions,including visible magnitude,distance,relative velocity and angle of sight lines,on selection of asteroids,based on the the trajectory scheme of exploring Ivar.Then navigation asteroids are selected under a integral evaluation.The planning of the photoing sequence is handled with an improved genetic algorithm,along with a difference selection method which optimizes the ratio of navigation evaluation to resource consumption.Simulation result indicates that this method is valid to select navigation asteroids and plan the photoing sequence.