Spacecraft rendezvous trajectory safety quantitative performance index eliminating probability dilution  

作　　者：SUN ZhenJiang LUO YaZhong NIU ZhiYong 

机构地区：[1]College of Aerospace Science and Engineering,National University of Defense Technology

出　　处：《Science China(Technological Sciences)》2014年第6期1219-1228,共10页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.11222215);the National Basic Research Program of China("973" Program)(Grant No.2013CB733100);Hunan Provincial Natural Science Foundation of China(Grant No.13JJ1001)

摘　　要：In view of the probability dilution problem of the existing quantitative indexes of rendezvous trajectory safety performance using collision probability,this paper proposes a new quantitative index of rendezvous trajectory safety performance by well combining collision probability with warning threshold.The proposed new index increases monotonously as the position errors of the chaser spacecraft increase,therefore it can effectively overcome the problems of the reduction in the largest performance value and the advancement in the most dangerous time induced by the probability dilution.The proposed new index is applied to the safety design of close range rendezvous missions.The mission’s safety requirements for initial navigation precision and the safe region of initial and final keeping points’positions with a certain navigation precision are analyzed,and several valuable conclusions about the relation between position navigation precision and velocity navigation precision as well as the relation between keeping points’positions and navigation precision are obtained.

关 键 词：rendezvous and docking safety performance probability dilution missing alarm probability 

分 类 号：V528[航空宇航科学与技术—人机与环境工程] U469.11[机械工程—车辆工程]