Complete cycle ambiguity fixing and reliability testing method and device suitable for GNSS static monitoring, medium and product

Abstract

The invention provides a whole cycle ambiguity fixation and reliability test method suitable for GNSS static monitoring. The method comprises the steps of calculating double-difference floating point ambiguity and a variance covariance matrix, obtaining a partial fixed ambiguity subset, transmitting a historical fixed ambiguity subset, carrying out ambiguity check based on position constraint, and updating the position of a monitoring station. The invention relates to an electronic device, a storage medium, and a program product. According to the invention, based on GNSS static monitoring characteristics, the fixed integer ambiguity is obtained by using a mode of fixing partial ambiguity and transmitting historical ambiguity, the fixed integer ambiguity is subjected to ambiguity reliability test of position constraint, and a reliable integer ambiguity vector is screened out; and using the reliable integer ambiguity vector to carry out position calculation of the GNSS monitoring station, and obtaining a high-precision positioning result of the monitoring station.

Description

technical field [0001] The invention relates to the technical field of GNSS, in particular to an integer ambiguity fixation and reliability inspection method, equipment, medium and product suitable for GNSS static monitoring. Background technique [0002] With the continuous development and improvement of GNSS (Global Navigation Satellite System), GNSS has become the main means of obtaining high-precision positioning results today. GNSS mainly includes: the GPS system of the United States, the GLONASS system of Russia, the BeiDou Navigation Satellite System (BDS) of China, and the GALILEO system of the European Union. Since centimeter-level or even millimeter-level positioning results can be obtained through GNSS, GNSS is widely used in the field of high-precision geological disaster monitoring, such as landslide monitoring. Through the high-precision real-time static monitoring of the surface of the disaster area, the precise early warning of disasters and disaster prevent...

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Problems solved by technology

[0027] In order to overcome the deficiencies in the prior art, the purpose of the present invention is to provide a method for fixing the ambiguity of the entire circumference and reliability testing applicable to GNSS static monitoring, which solves the problem of poor quality of receiver observation data and observation environment in the field of disaster monitoring. Due to factors such as severe occlusion, it is easy to have the situation that the entire peripheral blur cannot be fixed or fixed incorrectly, and it is impossible to obtain high-precision location information.

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