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Broadcasting method of real-time accurate satellite positioning product

A precision positioning and product technology, applied in the field of satellite navigation, can solve problems such as inconsistent truncation errors, unusable accuracy of high-precision differential products, inconsistent broadcast ephemeris updates between the server and the client, and achieve the effect of ensuring reliability

Active Publication Date: 2013-03-13
国家卫星定位系统工程技术研究中心
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Problems solved by technology

[0009] The purpose of the present invention is to overcome the deficiencies of the above-mentioned background technology, and to provide a broadcast method of satellite real-time precision positioning products, which can solve the inconsistency of server and client broadcast ephemeris update, server and client software algorithm model and truncation High-precision differential products cannot be used or the accuracy is reduced due to inconsistent errors

Method used

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with the drawings.

[0038] The broadcast method of satellite real-time precision positioning products mainly uses the server to split the satellite positioning information up and down into "large numbers" and "decimals" in the upper and lower hundred meters; the user side obtains the "large numbers" through broadcast ephemeris and receives the incoming server The broadcast "decimals" restores exactly the same precise positioning products. The server-side broadcast process is as follows figure 1 As shown, the client recovery process is as follows figure 2 Shown. The specific implementation steps are as follows:

[0039] (1) The server performs quality inspection on the precision positioning products obtained in the current epoch observation data. If the inspection fails, repeat step (1) at the next epoch; if the inspection passes, then proceed to step (2);

[0040] (2) Server intercepts ORB of precise or...

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Abstract

The invention belongs to the technical field of satellite navigation, in particular to a broadcasting method of a satellite real-time accurate positioning product. Satellite positioning information is separated into a large number and a small number according to the height above or below a hundred meter at a server end, and a client end recovers an identical accurate positioning product through the large number acquired from broadcast ephemeris and the small number transferred by the server. The invention can solve the problems of failure or reduced accuracy of a high-accuracy differential product, and the like caused by the inconsistence for upgrading the broadcasting ephemeris of the server and the client end and the inconsistence between a server and client end software algorithm module and a truncation error.

Description

Technical field [0001] The invention relates to the technical field of satellite navigation, in particular to a method for broadcasting satellite real-time precision positioning products. Background technique [0002] At present, decimeter-level wide-area real-time precision positioning system technology is a cutting-edge technology and research hotspot in the field of GNSS applications. The system broadcasts real-time precision positioning product information through a small number of uniformly distributed real-time and continuous reference stations and an advanced real-time precision positioning information processing system, and broadcasts real-time precision positioning product information through satellite-based enhancement, which can greatly improve the navigation service accuracy of the satellite navigation system in the enhanced signal coverage area. , Availability, continuity and integrity. [0003] Among them, the broadcasting of precision positioning products (including...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08H04L7/00
Inventor 施闯楼益栋宋伟伟杨蜀江辜声峰
Owner 国家卫星定位系统工程技术研究中心
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