Autonomous navigation method and technology implementation of high-precision solar spectral velocity measurement  

作　　者：Wei Zhang Yong Yang Wei You JinZhou Zheng Hui Ye KaiJun Ji Xiao Chen Xin Lin QingLong Huang XueWu Cheng Wei Zhang FaQuan Li 

机构地区：[1]Shanghai Academy of Spaceflight Technology,Shanghai 201109,China [2]Shanghai Institute of Satellite Engineering,Shanghai 201109,China [3]Shanghai Key Laboratory of Deep Space Exploration Technology,Shanghai 201109,China [4]State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,Wuhan Institute of Physics and Mathematics,Innovation Academy of Precision Measurement Science and Technology,Chinese Academy of Sciences,Wuhan 430071,China [5]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2022年第8期37-44,共8页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by China National Space Administration(CNSA)。

摘　　要：The velocity information of spacecraft can be directly obtained by the autonomous navigation method based on astronomical spectral velocity measurement. It provides complete direct velocity measurement information for the traditional navigation methods represented by astronomical angle measurement and astronomical ranging, which is of great significance for spacecraft high precision autonomous navigation. This paper comprehensively introduces the principle and navigation method of astronomical spectral velocity measurement, as well as the technical realization of the solar atomic frequency discriminator for autonomous navigation(SAFDAN) based on atomic frequency discrimination velocity measurement. The new SAFDAN is the first instrument to measure the Doppler velocity of spacecraft relative to the Sun. Carried by the CHASE mission, the in-orbit experiment of the SAFDAN is realized, and the in-orbit velocity measurement accuracy reaches 1.93 m/s, which effectively verifies the feasibility of the astronomical spectral velocity measurement method and technology.

关 键 词：orbit determination and improvement SPECTRA FREQUENCY measurement 

分 类 号：TN96[电子电信—信号与信息处理] V448[电子电信—信息与通信工程]