Near-Earth Asteroid Surveillance Constellation in the Sun-Venus Three-Body System  

作　　者：Xingyu Zhou Xiangyu Li Zhuoxi Huo Linzhi Meng Jiangchuan Huang 

机构地区：[1]School of Aerospace Engineering,Beijing Institute of Technology,Beijing,China [2]Qian Xuesen Laboratory of Space Technology,China Academy of Space Technology,Beijing,China [3]Beijing Institute of Spacecraft System Engineering,China Academy of Space Technology,Beijing,China

出　　处：《Space(Science & Technology)》2022年第1期441-461,共21页空间科学与技术（英文）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.12002028 and 51827806);the Beijing Institute of Technology Research Fund Program for Young Scholars(Grant No.XSQD-202101012);the Qian Xuesen Laboratory of Space Technology Initiative Key Program.

摘　　要：The threat of potential hazardous near-Earth asteroid(PHA)impact on Earth is increasingly attracting public attention.Monitoring and early warning of those PHAs are the premise of planetary defense.In this paper,we proposed a novel concept of surveillance constellation of heterogeneous wide-field near-Earth asteroid(NEA)surveyors(CROWN),in which six spacebased surveyors are loosely deployed in Venus-like orbits to detect the NEAs along the direction of the sunlight.First,the concept and overall design of the NEA surveillance constellation are discussed.Second,the transfer and deployment trajectory of the surveyors are investigated based on the Sun-Venus three-body system.The Sun-Venus libration orbit is taken as the parking orbit,and its stable invariant manifolds are used to reduce the deployment fuel consumption.Next,the detection performance of the CROWN was evaluated considering constraints of apparent visual magnitude and field of view.The NEA orbit determination(OD)using the CROWN was studied and verified.Simulation results show that the CROWN can be deployed with a total velocity increment of approximately 300 m/s.During the 5 years of observation,99.8%of PHAs can be detected and the OD precision is better than a single-surveyor system.This paper can provide a reference for the construction of future asteroid defense system.

关 键 词：Earth system PLANETARY 

分 类 号：P185.2[天文地球—天文学]