Static station cycle slip detection method, device and equipment and computer storage medium

Abstract

The embodiment of the invention provides a static station cycle slip detection method, device and equipment and a computer storage medium, and the method comprises the steps: eliminating the satellite-ground distance in an inter-epoch difference process through the known coordinate data of a static station when the inter-epoch difference is carried out according to a carrier phase observation value, and obtaining a first observation equation; according to the selected reference satellite, performing difference calculation between the reference satellite and the observation satellite based on the first observation equation to obtain a second observation equation; performing inter-epoch difference again based on the second observation equation to obtain inter-epoch difference observation quantity; and performing cycle slip judgment according to the epoch difference observed quantity. According to the embodiment of the invention, the satellite-ground distance can be eliminated by utilizing the known coordinates of the static station in the epoch difference calculation process, so that to-be-estimated parameters of coordinate variation are reduced, and position deviation is avoided; and the inter-epoch difference is carried out after the inter-satellite difference, so that the influence of residual errors is weakened, the problems of misjudgment and missing judgment of the cycle slip when the data sampling rate is low can be solved, the small cycle slip can be detected, and the applicability is high.

Description

technical field [0001] The present disclosure belongs to the technical field of satellite positioning, and in particular, relates to a method, apparatus, device and computer storage medium for static station cycle slip detection. Background technique [0002] GNSS (Global Navigation Satellite System, Global Navigation Satellite System) high-precision positioning, orbit determination, satellite clock error calculation, etc. are generally implemented based on carrier phase observations. The carrier phase observations have high accuracy, but are prone to cycle slips and If the cycle slip is not processed after the jump, the phase observation value will be seriously polluted, resulting in a large deviation of the solution result. If the cycle slip is accurately detected or repaired correctly, the phase observations can be fully utilized to obtain high-precision solution results. Therefore, cycle-slip detection and repair play a vital role in high-precision applications. [0003...

AI Technical Summary

Problems solved by technology

This method is only suitable for high sampling rate (such as 1HZ), and the effect for low sampling rate is poor; and when there are multiple cycle slips, due to the equalization error characteristics of least squares, using the least squares method may lead to the final The residual cannot reflect the real error, and it is impossible to determine which satellite has a cycle slip through the residual, so this method also has flaws

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