Research Article
Analysis and Simulation of High Orbit Weak Signal Tracking Algorithm
@INPROCEEDINGS{10.1007/978-3-031-34497-8_12, author={Xiaojiang Yang and Qian Yu and Dongbo Pei}, title={Analysis and Simulation of High Orbit Weak Signal Tracking Algorithm}, proceedings={Mobile Wireless Middleware, Operating Systems and Applications. 11th EAI International Conference, MOBILWARE 2022, Virtual Event, December 28-29, 2022, Proceedings}, proceedings_a={MOBILWARE}, year={2023}, month={5}, keywords={High orbit spacecraft Autonomous navigation Weak signal Loop Integral time}, doi={10.1007/978-3-031-34497-8_12} }- Xiaojiang Yang
Qian Yu
Dongbo Pei
Year: 2023
Analysis and Simulation of High Orbit Weak Signal Tracking Algorithm
MOBILWARE
Springer
DOI: 10.1007/978-3-031-34497-8_12
Abstract
Autonomous navigation technology of high orbit spacecraft is one of new aerospace techniques that are badly in need of development in China. It is widely used in communication, navigation, meteorology, early warning and other fields. High orbit navigation receiver provides a convenient and effective means for autonomous navigation and positioning of high orbit spacecraft. In the high dynamic environment, the carrier frequency, phase and pseudo code phase change greatly along with the supporter motion. Because the influence of Doppler frequency change introduced by supporter dynamics on pseudo code tracking loop can be eliminated by carrier assistance, the dynamic performance of receiver mainly depends on the carrier tracking module. The increase of propagation path and high dynamic signal of high orbit leads to problems of large loss of received signal path and weak signal of high orbit navigation receiver. Through carrying out special research on high orbit weak signal tracking technology, several simulations and analyses, reasonable design of loop noise bandwidth, adjustment of pre-integration time and other measures, the navigation weak signal of −173 dBw can be effectively and stably processed and traced. The algorithm has been applied to Chang’E-5 satellite, and provides technical guidance and index reference for deep space exploration projects, such as high orbit satellite navigation and circumlunar flying.
