摘要
近年来小行星探测已成为各航天大国的热点,小行星引力场对研究其内部结构、组成成分、早期演化和探测器轨道设计、着陆等方面有着极其重要的作用.随着小行星探测数据的不断更新、探测任务的增多和观测技术改进,针对小行星引力场的研究也在不断增多并产生新的进展.目前获取小行星引力场的方法主要为利用探测器飞掠过程中得到的轨道跟踪数据反演引力场及根据小行星形状模型正演引力场两种方法.本文对这两种方法进行介绍,通过回顾几个取得较大进展的小行星探测任务,综述截至目前小行星引力场模型的发展现状,分析各个研究模型的优缺点,并对小行星引力场的发展进行展望.
In recent years, asteroid exploration has become a hot spot of many countries, and asteroid gravity field is an important factor among these missions. The gravity field of asteroids is very critical for studying its internal structure, composition, early evolution of the asteroid, orbital design and the probe landing. With the continuous updating of asteroid detection data, the increase of detection missions aiming at asteroids and the improvement of observation techniques, the research on its gravity field is also increasing and new progress has been made. At present, the methods for obtaining the gravitational field of the asteroid are mainly two methods: gravity field recovery based on orbital tracking data and the forward modeling based on shape model. This paper introduces these two methods. By reviewing several asteroid exploration missions that have made great progress, the development status of the asteroid gravity field models so far is reviewed, and the advantages and disadvantages of each research model are analyzed. Finally, we give a prospect of the asteroid gravitational field development.
作者
郭茜
鄢建国
杨轩
金炜桐
李斐
GUO Xi;YAN JianGuo;YANG Xuan;JIN WeiTong;LI Fei(State Key Laboratory of Information Engineering in Surveying,Mapping and Remote sensing,Whuhan 430070,China)
出处
《地球物理学进展》
CSCD
北大核心
2021年第1期1-7,共7页
Progress in Geophysics
基金
国家自然科学基金(U1831132,41874010)
湖北省杰出青年基金(2018CFA087)联合资助。
关键词
小行星探测
引力场
太阳系
Asteroid exploration
Gravity field
Solar system
