电子学报2024，Vol.52Issue(4)：1239-1249,11.DOI:10.12263/DZXB.20240063
中国空间站的微波星地时频比对技术及其初步试验验证和分析
Microwave Satellite-Ground Time-Frequency Comparison Techniques Based on the China Space Station:Initial Testing Validation and Analysis
摘要
Abstract
High-precision time-frequency comparison is a crucial demand in modern science and technology.Yet,the performance of current technologies is significantly hindered by the measurement capabilities of comparison systems and the error processing algorithms of link systems.Addressing these challenges,this study establishes a high-precision satellite-ground microwave time-frequency comparison system based on the China Space Station(CSS),introducing a novel satel-lite-ground time-frequency comparison technique that employs two-way measurements(tri-frequency mode)and includes advanced methods for detailed modeling of link system errors.Simulations across various satellite-ground time-frequency comparison scenarios reveal that,even with high-precision clocks(10-15 to 10-17),the long-term performance of the compari-son,optimized through our algorithm,can achieve near-original satellite-ground clock performance.Preliminary compari-son tests using the hydrogen maser clocks on the CSS and the ground demonstrate that,within a 300-second visibility arc,CSS-ground time-frequency comparison precision can reach 10.77 ps,with an ADEV(Allan Deviation)of 9.992 1×10-14@100 s,closely matching simulation results.This research provides new theoretical foundations and technical references for precision time-frequency synchronization technology.关键词
中国空间站/原子钟/星地微波链路/时频比对/双向测量Key words
China Space Station/atomic clock/satellite-ground microwave link/time-frequency comparison/two-way measurement分类
信息技术与安全科学引用本文复制引用
郭燕铭,白燕,高玉平,卢晓春,张首刚,高帅和,潘志兵,王沛,龚学文,宋坤,周晨,张文颖,陈晓锋..中国空间站的微波星地时频比对技术及其初步试验验证和分析[J].电子学报,2024,52(4):1239-1249,11.基金项目
国家重点研发计划(No.2023YFB3906500) （No.2023YFB3906500）
国家自然科学基金(No.12273045,No.42030105) （No.12273045,No.42030105）
中国载人航天工程应用系统项目 National Key Research and Development Program of China(No.2023YFB3906500) （No.2023YFB3906500）
National Natural Science Foundation of China(No.12273045,No.42030105) （No.12273045,No.42030105）
Project supported by the Space Application System of China Manned Space Program （）
