Feasibility Analysis of Autonomous Orbit Determination and Gravity-Field Recovery around Asteroids Using Inter-Satellite Range Data

被引：1

作者：

Li, Haohan ^{[1
,2
,3
]}

Hou, Xiyun ^{[1
,2
,3
]}

机构：

[1] Nanjing Univ, Sch Astron & Space Sci, Nanjing 210023, Peoples R China

[2] Nanjing Univ, Inst Space Environm & Astrodynam, Nanjing 210023, Peoples R China

[3] Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210023, Peoples R China

来源：

AEROSPACE | 2023年 / 10卷 / 03期

基金：

中国国家自然科学基金;

关键词：

autonomous orbit determination; gravity field; asteroid; inter-satellite range data; optimization; ROTATION PERIOD; SPIN POLE; TRACKING;

D O I：

10.3390/aerospace10030304

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Autonomous navigation and orbit determination are key problems of asteroid exploration missions. Inter-satellite range link is a type of measurement widely used in the orbit determination of Earth satellites, but not so widely used in missions around small bodies. In our study, we assume that highly accurate inter-satellite range data can be obtained around small bodies between the chief spacecraft and some low-cost deputies, and study the feasibility of simultaneous autonomous orbit determination of the spacecraft and the gravity-field recovery without the support from ground stations. After the feasibility analysis, two modified methods are proposed. Both methods demonstrate obvious improvements in both the convergence region and the accuracy. One remark is that the inter-satellite range data can be also used together with various observation data from ground stations to enhance the accuracy of the determined orbits and the gravity field.

引用

页数：17

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