Title :
Fast acquisition of GPS signal in low SNR environments
Author :
Huabing, Wu ; Yonghui, Hu
Author_Institution :
National Time Service Center, Chinese Academy of Sciences, Xi´´an, China
Abstract :
In this paper, to improve the performance of GPS receiver in low SNR environments, a method based on matched filter bank and FFT is proposed. The method aims at improving SNR by means of accumulation effects, coherent and non-coherent integration. Before FFT spectrum analysis, the method uses windowing techniques to reduce the degradation and the leak of the spectrum. Simulation results demonstrate the proposed method has the detection sensitivity −185dBW.
Keywords :
Global Positioning System; Matched filters; Receivers; Signal to noise ratio; Software; Software algorithms; Spread spectrum communication; FFT; GPS; fast acquisition; low SNR;
Conference_Titel :
Information Science and Engineering (ICISE), 2010 2nd International Conference on
Conference_Location :
Hangzhou, China
Print_ISBN :
978-1-4244-7616-9
DOI :
10.1109/ICISE.2010.5691505
