A novel method of multipath mitigation for C/A code tracking loop based on wavelet transform

Author

Xue Bing ; Gai Meng ; Shen Feng ; Liu Na

Author_Institution

Autom. Sch., Harbin Eng. Univ., Harbin, China

fYear

2011

fDate

6-8 June 2011

Firstpage

705

Lastpage

709

Abstract

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.

Keywords

Global Positioning System; codes; correlation methods; interference suppression; spread spectrum communication; wavelet transforms; C-A code tracking loop; DLL; autocorrelation function; correlation model; gps; jumping-off point detection method; multipath mitigating performance; multipath signal; navigation receiver; sky-wave interference; spread spectrum system; wavelet analysis; wavelet transform; Correlation; Correlators; Delay; Interference; Tracking loops; Wavelet transforms; Autocorrelation function; Multipath mitigation; Spread spectrum system; Wavelet transform;

fLanguage

English

Publisher

ieee

Conference_Titel

Information and Automation (ICIA), 2011 IEEE International Conference on

Conference_Location

Shenzhen

Print_ISBN

978-1-4577-0268-6

Electronic_ISBN

978-1-4577-0269-3

Type

conf

DOI

10.1109/ICINFA.2011.5949085

Filename

5949085