地球卫星VLBI观测研究进展

随着地球卫星在资源、导航定位、授时、跟踪以及数据中继等经济和军事领域的作用不断增强,传统的测距测速技术已无法满足对卫星定位精度的实际需求。由于VLBI技术具有高精度角分辨率的特点,人们尝试将其应用于人造地球卫星的观测。针对卫星VLBI观测方面,首先介绍了卫星VLBI观测技术的基本原理及其与传统河外射电源VLBI观测的差异,然后介绍了中外学者应用VLBI技术进行地球卫星观测的研究进展及相关成果,最后对以往近地卫星VLBI观测研究存在的问题进行总结,并讨论了目前以及将来可能的解决方案。

Research Progress of Earth Satellite VLBI Observation

With the increasing role of Earth satellite in the economic and military fields,such as resource exploration,navigation and positioning,timing,tracking and data relay,the accuracy of satellite positioning using the traditional ranging and range-rate technology is no longer high enough for practical application.Owing its high precision angular resolution,VLBI technology has been applied for observation of artificial satellites.In this paper,we first introduce the basic principles of satellite VLBI observation,and its difference from the traditional VLBI observation of celestial radio source VLBI observations;then we describe the domestic and foreign satellite VLBI observation and their related achievement;finally,we discuss the problems existing in the past Earth satellite VLBI observation,and the current and future possible solution.