Cycle-slip Detection of GPS Carrier Phase Observable Based on Wavelet Technology
Sheng Ren-jun · Journal of Nanjing University of Science and Technology · 2005
According to the principle of signal oddity detection, the wavelet transform is used to detect the cycle-slip of the GPS carrier phase observable. The location of the cycle-slip is regarded as the bizarre point of the signal. The coefficient of the wavelet transform has a maximal modulus value. The place of the cycle-slip is ascertained by detecting the point of maximal modulus value. The experimental data validate that the degree of the automatization is high and the place is exact with the wavelet transform detecting the cycle-slip. The detection of the double difference observable is more obvious than that of the signle difference observable bacause the double difference observable eliminates the infection of the relevant errors, and the effect is better if the cycle-slip is bigger.