基于北斗三号三频数据的周跳探测与修复  

Cycle-slip detection and repair based on BDS-3 triple-frequency data

作　　者：付伟 帅玮祎 董绪荣 FU Wei;SHUAI Weiyi;DONG Xurong(School of Space Information,Space Engineering University,Beijing 101416,China)

机构地区：[1]航天工程大学航天信息学院,北京101416

出　　处：《测绘工程》2020年第2期30-35,共6页Engineering of Surveying and Mapping

摘　　要：针对载波相位观测值中出现周跳的问题及北斗三号系统(BDS-3)将至少有B1I,B1C,B2a和B3I4个信号提供全球公开服务的现状,研究北斗三号系统的周跳探测与修复。提出优化三频相位电离层残差二阶历元差分组合和三频无几何无电离层相位组合的信号排列顺序,可进一步削弱组合观测量的电离层延迟影响和噪声影响,并基于北斗三号的实测数据,联合STPIR法、MW法和无几何无电离层相位组合法进行周跳探测与修复实验。实验结果表明,组合观测量信号的优化排列,削弱组合观测量的电离层延迟影响和噪声影响,且所选的3个组合观测量可以准确探测所有周跳,并有效地修复。For the problem of cycle-slip in the carrier phase observation,and the status of BDS-3 providing at least four signals(B 1I,B1C,B2a and B 3I)for the global public service,the cycle-slips detection and repair of the BDS-3 are introduced.It is proposed to optimize signal arrangement order of the triple-frequency second-order time-difference phase ionosphere residual(STPIR)combination and the triple-frequency geometry-free and ionosphere-free phase combination,which can further weaken the ionospheric delay and noise of the combined observations.Based on the measured data of BDS-3,combined with STPIR method,MW method and geometry-free and ionosphere-free phase combination method,the cycle slip detection and repair experiments are carried out.The experimental result shows that the optimal arrangement of combined signals can weaken the effect of ionospheric delay and noise and the selected three combined observations can accurately detect all cycle slips and perform effective repairs.

关 键 词：北斗三号 三频相位电离层残差二阶历元差分组合 MW组合 三频无几何无电离层相位组合 周跳探测与修复 

分 类 号：P228.4[天文地球—大地测量学与测量工程]