High-frequency epoch-by-epoch phase difference method for single-frequency GNSS phase stability monitoring

The invention discloses a high-frequency epoch-by-epoch phase difference method for single-frequency GNSS phase stability monitoring, comprising the following steps: using a single-frequency GNSS receiver to perform high-frequency observation on a station point, and calculating the phase difference between adjacent epochs; using the least squares method to detect a station 3D (NEU) coordinate correction number time series within the interval of adjacent epochs under continuous epochs; getting the mean and standard deviation of the NEU coordinate through statistical analysis of the time series; and calculating the anomaly ratio. The phase observation stability of the single-frequency GNSS receiver is evaluated by calculating the continuous observation anomaly ratio using the method. Single-point real-time high-frequency GNSS phase data quality monitoring is carried out based on single-frequency GNSS data. The GNSS phase stability can be evaluated without the need for high-precision clock difference or model correction.