A Novel Method of Multipath Mitigation for C/A Code Tracking Loop Based on Wavelet Transform
Multipath is one of main errors in GPS and other spread spectrum systems,it seriously affects the performance of the navigation receiver.In this paper the correlation model under multipath signal is analyzed and we analyze the characteristics of the autocorrelation function starting with it, then a method of detecting jumping-off point of autocorrelation function based on wavelet analysis is proposed,further more,the discriminator result is got to adjust the C/A phase in DLL. Theory analysis and simulation results show that the method is not restricted by the numbers of multipath and sky-wave interference,and better multipath mitigating performance can be acquired than narrow correlation.
XUE Bing GAI Meng SHEN Feng LIU Na
Automation School Harbin Engineering University Harbin,Heilongjiang 150001,China
国际会议
深圳
英文
705-709
2011-06-06（万方平台首次上网日期，不代表论文的发表时间）