WSEAS Transactions on Signal Processing
Print ISSN: 1790-5052, E-ISSN: 2224-3488
Volume 11, 2015
GPS Signal Joint Acquisition Method of Mean Function and Autocorrelation Function under Multiplicative and Additive Noise
Authors: , ,
Abstract: GPS signal detection method based on high order cyclostationarity (DMHOC) is the state-of-the-art method for acquiring the GPS signal under multiplicative and additive noise. However, since the method only uses autocorrelation function to obtain the peak and estimate the received signal frequency, the peak may be buried in the noise when power spectrum of the multiplicative noise (PSMN) is low. To solve the problem, the GPS signal joint acquisition method of mean function and autocorrelation function under multiplicative and additive noise has been proposed. The proposed method uses the energy ratio threshold to determine which function (mean function or autocorrelation function) to be used for estimation of the received signal frequency. The simulation results show that the proposed method is more robust to the change of multiplicative noise than DMHOC.
Search Articles
Keywords: GPS acquisition, Cyclostationarity, Multiplicative and additive noise, Mean function, Autocorrelation function, Energy ratio
Pages: 164-173
WSEAS Transactions on Signal Processing, ISSN / E-ISSN: 1790-5052 / 2224-3488, Volume 11, 2015, Art. #20