Beidou single frequency cycle slip detection method

The invention relates to a Beidou single frequency cycle slip detection method, which belongs to the field of Beidou navigation and positioning data processing. A pseudo range observation value is firstly used for subtracting a carrier phase observation value, the difference value is then differenced between epochs, and a cycle slip detection amount is obtained; then, a Hankel matrix is used for building an attractor track matrix for the cycle slip detection amount, singular value decomposition (SVD) is carried out, and a limited number of effective singular values capable of reflecting abrupt information can be obtained; and finally, SVD inverse operation is used for reconstructing a component signal for each effective singular value, and after the component signals are overlapped, the cycle slip is detected according to the position of the maximum value point in the overlapped signals. Amplitude changes only need to be features, whether cycle slip happens is judged only by a cycle slip detection amount amplitude through SVD processing, the problem that the traditional method is hard to detect small cycle slip can be solved, and small cycle slip with 1 to 5 cycles in the Beidou carrier phase observation value can be effectively detected.