Wavelet-based method for weak satellite signal acquisition

A novel method of differential coherent integration (DFC) algorithm combined with wavelet transform is proposed to acquire the weak global positioning system (GPS) signal parameters. The paper compared this proposed method with the traditional weak satellite signal acquisition algorithms to verify its feasibility. This method utilizes wavelet de-noising for the result of DFC to improve the Signal-to-Noise ratio (SNR) of acquisition process. Simulations demonstrate that the proposed method is better than DFC in obtaining larger acquisition output SNR.