The detection of GPS cycle slips based on wavelet transform

Accurately detecting and repairing cycle slips is an important pre-processing step in high precision GPS carrier phase positioning and applications. Carrier phase measurements can be divided into high and low frequency components by wavelet transform which wavelet coefficients of local extremum point can be detected phase of the cycle slips. In this paper, wavelet transform is used to detect cycle slip detection which is based on the principle of singularity. Through modulus maxima detection to determine the location of cycle slips, GPS double difference observations used to detect cycle slips is better than single-difference observations. When the cycle slips is larger, the effect of double difference is better. The results show that the method of wavelet transform can be accurately used to detect cycle slips.