DGNSS ionosphere anomaly detection method based on W distance and adaptive filtering

A DGNSS ionosphere anomaly detection method based on a W distance and adaptive filtering comprises the following steps: receiving pseudo-range and carrier phase observation values from a GNSS satellite, and carrying out a receiving process of data cleaning and Doppler cycle slip detection; performing phase space reconstruction on the received pseudo-range and carrier phase observation value, calculating a Wasserstein distance of probability distribution of the pseudo-range and the carrier phase observation value, and obtaining a filtering process of the filtered Wasserstein distance by using combined LMS filtering; and judging whether the ionized layer is abnormal or not by using the filtered Wasserstein distance. According to the method, the Wasserstein distance and the combined LMS filtering algorithm are utilized, the ionosphere anomaly component can be rapidly extracted only through the pseudo-range and the carrier phase observation value, the calculation cost is low, the application prospect is high, the