Perfermance Analysis of Deep-Space Interferometry in Chang'E-5 Mission

Abstract

China’s deep space interferometry system has participated in orbit measurement for the Chang’E-5 mission officially, which has provided high-precision angular position information. The tropospheric delay hybrid model was proposed to ensure the accuracy of real-time interferometry. Using the non-continuous tracking technology, fast intercontinental interferometry was carried out for the first time, which provided high-precision angular position with the advantage of baseline length. The performance was evaluated based on the orbit measurement results of Chang’E-5 probe. These results show that the deep-space interferometry system has played an important role in the fast orbit determination.

Keywords

VLBI / China deep-space interferometry / Chang'E-5 / orbit measurement