深空探测VLBI测量技术

深空探测活动离不开深空测控网的支持,但是,现有航天测控系统不能满足深空探测工程的需求。VLBI测量技术测量精度高,定轨时间短,是一种很好的深空测量方法。文章讨论了VLBI的概念和差分VLBI的基本原理,VLBI的定位体制及角度测量的变换,详细分析了差分VLBI的测量精度,并展望了ΔVLBI在我国未来深空探测中的应用前景。

The VLBI technology of deep space exploration

deep space exploration needs the supporting of deep space network(DSN).But existing aerospace TT&C system can’t be adequate for deep space exploration.Very Long Baseline Interferometry(VLBI) is a wonderful deep space exploration technology having exact measurement precision and short orbit-meterage time.This paper introduces the concept of VLBI,the principle of ΔVLBI(Delta VLBI),the Positioning system and the transform of angle measurement.It analyses the measurement precision of ΔVLBI and introduces the application in China’s future deep space exploration.