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Broadcasting method of real-time accurate satellite positioning product

A precise positioning and product technology, applied in the field of satellite navigation, can solve the problems of inconsistent truncation errors, inconsistent broadcast ephemeris updates between the server and the client, and inability to use precision for high-precision differential products, to achieve the effect of ensuring reliability.

Active Publication Date: 2010-12-08
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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  • Broadcasting method of real-time accurate satellite positioning product
  • Broadcasting method of real-time accurate satellite positioning product
  • Broadcasting method of real-time accurate satellite positioning product

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Embodiment Construction

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

[0038] The broadcast method of satellite real-time precision positioning products mainly splits the satellite positioning information into "large numbers" and "decimal numbers" at the 100-meter level through the server side; The advertised "decimal" restores exactly the same precision positioning product. Among them, 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 a quality inspection on the precise positioning product obtained from the observation data of the current epoch. If the inspection fails, repeat step (1) at the next epoch; if the inspection passes, proceed to step (2);

[0040] (2) The server intercepts the precise orbit information ORB pre And clock difference information CLK pre The value be...

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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 broadcasting method of satellite real-time precise 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 uses a small number of evenly distributed real-time continuous operation reference stations and an advanced real-time precise positioning information processing system, and broadcasts real-time precise 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 dissemination of precision positioning products (including real-time orbit and clock error) is an important part of the w...

Claims

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Application Information

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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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