Data subscription and dissemination method and device in large-scale CORS station broadcasting system

Abstract

The invention relates to the field of satellite positioning, and discloses a data subscription and dissemination method and a data subscription and dissemination device in a large-scale CORS station broadcasting system. The whole broadcasting system combines subscription, dissemination and upstream and downstream data management together during data subscription and dissemination and connection building processes, and shields specific machine information; a user only needs to concern what data the user needs, a system framework flexibly builds connection information with an upstream working node according to a route selection strategy, so that serial connection and management of upstream and downstream modules are facilitated, and the repeated development cost is saved. Furthermore, a unified coding / decoding method is also provided; when the CORS station data of different manufacturers are received, the data is decoded into a standard internal format via different decoding algorithms,so as to be conveniently used by each internal project; when needing to be broadcasted outwards, the data is coded into the standard RTCM data once more and then broadcasted via an NTRIP protocol; therefore, the dependency on the manufacturers can be eliminated.

Description

technical field [0001] The invention relates to the field of satellite positioning, in particular to the technology of data subscription and release in a large-scale CORS station broadcasting system. Background technique [0002] With the development and popularization of satellite positioning technology, communication technology and computer network technology, the public's demand for location-based services is getting higher and higher. As a convenient method to significantly improve positioning accuracy, differential positioning has been widely accepted by the public. The differential positioning method relies on the data broadcast by CORS stations, but the current CORS stations are basically independent of each project and each region, and there are problems of repeated construction of CORS stations and low resource utilization. The proposal of the national one network project can greatly solve this problem. The purpose of the national one network is to gather the data ...

AI Technical Summary

Problems solved by technology

When purchasing equipment from one type of manufacturer, VRS and broadcasting are still likely to use the equipment of this manufacturer, and it is impossible to widely compare equipment from multiple manufacturers.

[0007] 2. Small networking range

The current technology is basically a network within a range, such as a city or province, but the information of different provinces and cities is not universal, and it is impossible to build a nationwide network, which will cause inconvenience in information broadcasting

[0008] 3. High availability is low. After one or a small number of base stations have problems, the service may not be improved in a large area nearby, and other base stations cannot be immediately introduced to provide services

[0009] 4. The scalability is low, there is no unified configuration center, after a small range of networking, if you want to add more stations, the process is complicated and the operability is poor

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