High-accuracy position correction positioning system based on cloud computing

Abstract

The invention discloses a high-accuracy position correction positioning system based on cloud computing. The high-accuracy position correction positioning system comprises a client-terminal, a differential server and a differential reference station network formed by multiple differential reference base stations. The differential server is connected with the client-terminal and the differential reference station network via a communication module. The differential server receives single-point positioning information of the client-terminal and real-time pseudo range observation information of the reference base stations. When the client-terminal is insufficient in single-point positioning accuracy and requests to the differential server for high-accuracy positioning, the differential server solves positioning information correction number and a correction satellite set formed by multiple satellites on the basis of the received single-point positioning information and the real-time pseudo range observation information. The client-terminal solves accurate positioning information to perform accurate positioning by utilizing the correction satellite set and the positioning information correction number. According to the correction positioning system, an accurate positioning service can be intelligently, rapidly and accurately provided to the client-terminal so that positioning is rapid and positioning accuracy is high; and the client-terminal acts as a data provider so that the client-terminal is low in computation burden and low in flow consumption.

Description

technical field [0001] The invention relates to a satellite navigation system, in particular to a high-precision position correction method and system based on cloud computing. Background technique [0002] Satellite navigation technology has become an emerging industry leading the third IT revolution after mobile communications and the Internet. The satellite navigation industry has an important position and role in the national strategic pattern. In the "Twelfth Five-Year Plan" that the country is implementing, satellite navigation is included in the seven strategic emerging industries supported and developed by the state. [0003] At present, mobile phones, vehicle-mounted terminals and other devices with satellite positioning functions generally use single-point positioning technology, and their positioning accuracy is about 10-20m, which cannot meet the needs of the majority of users. [0004] In the existing high-precision positioning services, pseudorange differentia...

AI Technical Summary

Problems solved by technology

This technology does not need to change the original equipment hardware, but the change of electronic products is changing with each passing day, and the replacement cycle of electronic products is very short

There are many types of mobile phones and vehicle-mounted terminals, and different manufacturers have different satellite positioning chips, different positioning modes, and different satellite selection methods. Therefore, it will have a greater impact on the position difference positioning results, which will lead to poor positioning accuracy. significantly improved, and the high-precision positioning service is also unsatisfactory

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