测绘科学技术学报2025，Vol.41Issue(3)：252-258,7.DOI:10.3969/j.issn.1673-6338.2025.03.005
2020-2023年BDS弹性功率事件载噪比和DCB变化分析
Analysis of C/N0 and DCB Variation in BDS Flex Power Events During 2020 to 2023
摘要
Abstract
BeiDou navigation satellite system(BDS)has the ability of flex power.Flex power will impact multiple aspects of satellite navigation.Therefore,it is necessary to conduct a comprehensive analysis on BDS flex power.In this paper,we detect the flex power events of BDS from 2020 to 2023 and analyze the effects of flex power on carri-er-to-noise density ratio and differential code bias(DCB).The results show that BDS flex power turned on 9 times in 2020 to 2023.During this period,the carrier-to-noise density ratios of geostationary Earth orbit(GEO),medi-um Earth orbit(MEO)and inclined geosynchronous orbit(IGSO)satellites change by 4～8 dB-Hz,5～9 dB-Hz and 4～9 dB-Hz respectively.During the flex power event,the C2I-C6I DCB products of the satellites with this function changed significantly,and the average effects on the DCB products of GEO,MEO and IGSO satellites are 5.41 ns,12.04 ns and 9.48 ns,respectively.The segmented estimates of DCBs before and after the turn-on flex power event in a day,the average effect between the two groups of DCBs reaches 4.66 ns,15.76 ns and 12.43 ns for the three types of satellites respectively.关键词
北斗卫星导航系统(BDS)/弹性功率/载噪比/差分码偏差(DCB)/全球卫星导航系统(GNSS)Key words
BeiDou navigation satellite system(BDS)/flex power/carrier-to-noise density ratio/differential code bias(DCB)/global navigation satellite system(GNSS)分类
天文与地球科学引用本文复制引用
路顺,张敖川,刘天承,吴周,李淑慧..2020-2023年BDS弹性功率事件载噪比和DCB变化分析[J].测绘科学技术学报,2025,41(3):252-258,7.基金项目
大学生创新创业项目(640123003). （640123003）
