摘要
针对传统的卫星导航系统播发频点有限,较难分离各部分误差的问题,提出了基于多频观测量的北斗卫星误差来源与组成检测方法。该方法利用单频、三频和四频码-载波相位的观测量组合,对小天线和定向天线采集数据进行了分析,实现了对北斗电离层、多径、星上误差的检测和分离。测量误差检测与组成分析结果表明,北斗卫星导航试验卫星上各个频点的多径误差和一阶电离层误差约占总误差来源的70%~80%,以及约0.2~0.3m的误差来自卫星自身和噪声。该方法可推广到未来北斗卫星导航系统的多径检测和误差分析中。
In view of the fact that the traditional satellite navigation system has limited radio frequencies,which is difficult to separate the error parts.This paper proposed a detection method of BDS satellite error sources and composition based on multi-frequency observations.By utilizing single,triple and quad-frequency code and carrier phase combination,the data collected from small antenna and directional antenna was analyzed.The ionospheric,multipath,satellite-introduced error of BDS could be detected and seperated.The research results of testing and analysis on measurement error indicated that the multipath and the first order of ionosphere error on each frequency accounted for about 70%-80%of the total error sources,and about 0.2-0.3 metres error came from the satellite itself and noise.This method could be promoted to the detection of multipath and analysis of error in future BDS.
作者
孙艺宁
黄智刚
金天
胡冰洁
王前
SUN Yining;HUANG Zhigang;JIN Tian;HU Bingjie;WANG Qian(School of Electronic and Information,Beihang University,Beijing 100191,China;Beijing Satellite Navigation,Beijing 100094,China)
出处
《探测与控制学报》
CSCD
北大核心
2018年第2期99-103,共5页
Journal of Detection & Control
基金
国家自然科学基金项目资助(61471017
41474027)
