SPACE STATION COMMON-VIEW TIME COMPARISON ORBIT ERROR CORRECTION METHOD

WIPO Patent Application WO/2023/061155

A1

A space station common-view time comparison orbit error correction method, comprising five parts, i.e., determination of simultaneous visual moments of two stations, calculation of projection coefficients of orbit errors, calculation of a three-dimensional orbit error vector set, calculation of a set of projection differences of the orbit errors in sight line directions of the two stations, and threshold decision. By means of calculation of the five parts, the maximum influence quantity of the orbit errors on a common-view time comparison result is obtained, observation moments that the maximum influence quantity exceeds a decision threshold are eliminated, and observation points that the effect of the orbit errors on the common-view time comparison is smaller than the decision threshold are reserved. According to the method, the amplification effect of space station orbit errors on common-view time comparison is overcome, and the effect of the orbit errors is reduced from 700 picoseconds to be within 300 picoseconds, such that the precision of space station common-view time comparison is greatly improved.

LIU YINHUA (CN)
LI XIAOHUI (CN)

PCT/CN2022/119617

April 20, 2023

September 19, 2022

Click for automatic bibliography generation  

NAT TIME SERVICE CENTER THE CHINESE ACADEMY OF SCIENCES (CN)

B64G3/00

CN114394263A	2022-04-26
CN107579794A	2018-01-12
CN108983590A	2018-12-11
CN111060928A	2020-04-24
CN109191408A	2019-01-11
JP2002249100A	2002-09-03

PATENT AGENCY OF NORTHWEST POLYTECHNICAL UNIVERSITY (CN)

View/Download PDF      PDF Help

Previous Patent: USE OF BACTEROIDES FRAGILIS IN PREVENTION AND TREATMENT OF CANCER-RELATED DIARRHEA

Next Patent: ROLLING APPARATUS AND MACHINING DEVICE