电子设计工程
電子設計工程
전자설계공정
Electronic Design Engineering
2015年
19期
1-4
,共4页
伽利略%在轨验证卫星%信噪比%多路径误差%单点定位
伽利略%在軌驗證衛星%信譟比%多路徑誤差%單點定位
가리략%재궤험증위성%신조비%다로경오차%단점정위
Galileo%IOV%SNR%multipath error%singlepoint positioning
Galileo卫星导航系统当前处于在轨验证阶段，对在轨验证卫星性能的分析能洞察Galileo系统的性能。本文从信噪比、伪距多路径误差和单点定位精度等方面进行分析并同GPS卫星进行对比，在计算伪距多路径误差时本文提出了能简化计算的处理四频信号伪距多路径误差的数学模型。通过分析可知Galileo 在轨验证卫星的信号强度要强于GPS信号，Galileo信号的多路径误差小于GPS信号的多路径误差并且 Galileo/GPS 组合系统的定位精度也优于GPS系统。
Galileo衛星導航繫統噹前處于在軌驗證階段，對在軌驗證衛星性能的分析能洞察Galileo繫統的性能。本文從信譟比、偽距多路徑誤差和單點定位精度等方麵進行分析併同GPS衛星進行對比，在計算偽距多路徑誤差時本文提齣瞭能簡化計算的處理四頻信號偽距多路徑誤差的數學模型。通過分析可知Galileo 在軌驗證衛星的信號彊度要彊于GPS信號，Galileo信號的多路徑誤差小于GPS信號的多路徑誤差併且 Galileo/GPS 組閤繫統的定位精度也優于GPS繫統。
Galileo위성도항계통당전처우재궤험증계단，대재궤험증위성성능적분석능동찰Galileo계통적성능。본문종신조비、위거다로경오차화단점정위정도등방면진행분석병동GPS위성진행대비，재계산위거다로경오차시본문제출료능간화계산적처리사빈신호위거다로경오차적수학모형。통과분석가지Galileo 재궤험증위성적신호강도요강우GPS신호，Galileo신호적다로경오차소우GPS신호적다로경오차병차 Galileo/GPS 조합계통적정위정도야우우GPS계통。
The Galileo satellite navigation system is in In-Orbit Validation phase currently and the analysis of the IOV satellites'smeasurements provides insight on the performanceof the Galileo system.In order to compare the positioning performance with GPS system,this paper analyzes potentialities of the Galileo system from SNR, multipath error and the accuracy of single point positioning.At the same time,this research supplements the algorithm of calculating the multipath error. The experiment results showed thatGalileo IOV satellites'ssignal strength is stronger than GPS satellites.Galileo IOV satellites'smultipath error is smaller than GPS satellites.Thepositioning accuracy of combined Galileo/GPSsystemis better than GPS system.
