High precision continuous positioning system and method applied to popular applications

Abstract

The invention provides a high precision continuous positioning system and method applied to popular applications. The system comprises a differential service system and a continuous positioning terminal, wherein the differential service system is connected with a ground reference station and used for obtaining original observation data of a satellite, pseudo-range differential data is obtained through computation, the continuous positioning terminal regularly submits a data application to the differential service system to obtain the pseudo-range differential data, and a precise positioning result is obtained through a pseudo-range differential algorithm. The invention can dynamically adjust and obtain the frequency of differential data, initiates an application at the right moment, and provides the differential data to the continuous positioning terminal by means of the differential service system. Under a precondition that availability is ensured, in the usage scene of continuous positioning, the data size is remarkably reduce, the usage cost is greatly reduced, and the application demand for high precision positioning in the popular application field such as navigation can be met.

Description

technical field [0001] The present invention relates to a system and method in the technical field of satellite positioning and navigation, in particular to a high-precision continuous positioning system and method for public applications based on a ground reference station augmentation system and differential positioning technology. Background technique [0002] The basic principle of high-precision differential positioning technology is: according to the known precise coordinates of the ground reference station of the ground reference station augmentation system, the distance correction number from the ground reference station to the satellite is calculated, and the data is sent by the ground reference station in real time. While performing satellite observation, the terminal also receives the differential data sent by the ground reference station, and corrects its positioning results, thereby improving the positioning accuracy. [0003] The requirements of mass applicatio...

AI Technical Summary

Problems solved by technology

However, the invention is applicable to the application scenarios of discontinuous positioning; for the application requirements of continuous positioning such as navigation, the positioning terminal usually needs to generate a positioning result per second; if the on-demand positioning method of the invention is adopted, the continuous positioning terminal and the position enhancement system Need to interact once per second, which consumes a lot of bandwidth

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