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A method and system for actively broadcasting ionospheric tec based on location information

A technology of location information and ionosphere, applied in radio wave measurement systems, satellite radio beacon positioning systems, measurement devices, etc., can solve problems such as software maintenance and update difficulties, ensure safe and continuous operation, avoid long waits, cost saving effect

Inactive Publication Date: 2016-04-20
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the mathematical method used to construct the ionospheric model is updated or replaced, all data processing modules using this ionospheric model must be updated accordingly, which will cause great difficulties in software maintenance and updating

Method used

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  • A method and system for actively broadcasting ionospheric tec based on location information
  • A method and system for actively broadcasting ionospheric tec based on location information

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Such as figure 1 As shown, an ionospheric TEC active broadcast system is characterized in that it includes a user terminal 1, a virtual server 2 and a physical server 3, the user terminal 1 and the virtual server 2 are connected to each other, and the virtual server 2 and the The physical servers 3 are connected to each other, and an ionospheric model is established on the physical servers 3 . The user terminal 1 is a mobile phone, a computer or a GNSS receiver. The physical server 3 is a plurality of workstations or a distributed cluster. There are multiple virtual servers 2, one of which is the main virtual server, and the rest are backup virtual servers. When the main virtual server fails, it will switch to the backup virtual server.

[0027] Present embodiment adopts Ubuntu12.04 as the operating system of the system server of th...

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Abstract

The invention relates to an ionized layer TEC active broadcasting method and system based on position information. The method includes the steps that a user sends information of time and the geographic position where a terminal is located through a user interaction interface or an API at the user terminal; a virtual server transfers the information submitted by the user to a physical server; according to a preset ionized layer model, the physical server calculates ionized layer TEC and feeds the ionized layer TEC back to the virtual server; the virtual server returns the ionized layer TEC to the user terminal; the user terminal converts the ionized layer TEC into ionized layer delay correction information. Compared with the prior art, the ionized layer TEC active broadcasting method separates an ionized layer modeling mathematical method from the user, the user only needs to receive the ionized layer TEC broadcast by the system instead of ionized layer model coefficients, so that complexity of data processing at a receiver terminal is effectively reduced, and the uniformity of data processing modules at the receiver terminal is promoted. The ionized layer TEC active broadcasting method and system have the advantages of being high in performance, safety, expansibility, controllability and universality and the like.

Description

technical field [0001] The invention relates to an application of location services in the field of surveying and mapping, in particular to an ionospheric TEC active broadcast method and system based on location information. Background technique [0002] Ionospheric delay error is the most significant error source in satellite navigation positioning. GNSS (Global Navigation Satellite System) dual-frequency receiver users can use dual-frequency ionospheric elimination combination method to eliminate most of the errors of ionospheric delay. However, for the vast number of single-frequency receiver users, it is still necessary to rely on the ionospheric model to correct the ionospheric delay. Commonly used ionospheric models include Klobuchar model, polynomial model, trigonometric model, spherical harmonic model, grid model, etc. Both GPS and Beidou broadcast Klobuchar model coefficients through broadcast ephemeris to realize ionospheric delay correction. The Klobuchar ionos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/07
CPCG01S19/07
Inventor 王成王解先段兵兵连丽珍
Owner TONGJI UNIV
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