Differential positioning method and system under interruption of VRS data

Abstract

The invention relates to the field of satellite positioning, and discloses a differential positioning method under data interruption, which includes: when the mobile station receives reference station data, the mobile station uses the received reference station data to perform differential calculation to obtain a first fixed solution; the mobile station receives When the data from the reference station is not available, the rover records the last calculated relative error value from the reference station; during the first time period when the rover does not receive data from the reference station, the rover uses the calculated relative error value to calculate A second fixed solution of the rover is obtained; during a second period of time when the rover continues to receive no data from the reference station, the rover uses the second fixed solution to perform differential calculation to obtain a third fixed solution. This method can obtain a high-precision fixed solution of the rover in a short time without relying on the connection to the reference station network or the real-time data of the reference station when the VRS data is interrupted, and obtain a high-precision solution of the user's rover. positioning coordinates.

Description

Technical field [0001] The present invention relates to a differential positioning satellite technology, and discloses a method and a differential positioning system at a VRS data interruption. Background technique [0002] RTK positioning is performed, it is sometimes due to a communication failure, the rover station can not receive the data from the reference station reference, differential analysis can not be performed, resulting in an interruption of data solver. Interrupt data so obtained solver solver solving or discontinuities in poor precision results. Some existing service provider does not process the data at the time of the interruption, select solver does not output the results so that users will not be able to get accurate positioning results. [0003] Patent proposes a conventional reference station data when the interrupt, using the inter-satellite single difference ambiguities lock to continue positioning, but the method can not be guaranteed for a fixed circumfer...

AI Technical Summary

Problems solved by technology

Some existing service providers do not process data when the data is interrupted, and choose not to output the calculation results, so that users cannot get accurate positioning results

[0003] The existing patent proposes a continuous positioning by using the single-difference ambiguity between the locked satellites when the reference station data is interrupted. When the cycle slips, the ambiguity of the entire cycle of the rover changes. If the above ambiguity is continued to be used, the accuracy of the positioning result calculated by the solution will be very low.

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