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Method of improving service reliability of ground-based augmentation system

A ground-based enhancement system and reliability technology, which can be applied to radio wave measurement systems, satellite radio beacon positioning systems, measurement devices, etc. Effectiveness of Utilization, Increased Reliability, and Expanded Service Scope

Inactive Publication Date: 2017-07-14
QIANXUN SPATIAL INTELLIGENCE INC
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Problems solved by technology

However, when the base station distance of the ground-based augmentation system is large or the environment in which the user terminal is located is poor, the effect of the differential service obtained by the user terminal is poor, so that the service range of the ground-based augmentation system is limited.

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  • Method of improving service reliability of ground-based augmentation system
  • Method of improving service reliability of ground-based augmentation system

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are only used to illustrate the technical solutions of the present invention rather than limit the protection scope of the present invention.

[0016] Such as figure 1 , figure 2 As shown, the present invention proposes a method for improving service reliability of a ground-based augmentation system, comprising the following steps:

[0017] (1) M terminals such as users 1, 2, 3, 4... (hereinafter referred to as terminal A) receive satellite signals, and at the same time, terminal A is connected to the ground-based augmentation system, and sends the original observation data and approximate position to the ground-based augmentation system;

[0018] (2) After receiving the request from terminal A, the ground-based augmentation system generates VRS data according to the approximate location of terminal A, a...

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Abstract

The present invention relates to a method for improving service reliability of a ground-based augmentation system, comprising the following steps: terminal A sends original observation data and a rough position to the ground-based augmentation system; the ground-based augmentation system generates VRS data and sends it to terminal A; terminal A uses a differential signal Perform relative positioning to obtain precise location information; terminal A sends the precise location information and original observation data to the ground-based augmentation system; the ground-based augmentation system evaluates the quality of the original observation data and VRS data, and selects the best of the two to send to terminal B ; After terminal B receives the original observation data or VRS data of terminal A, it performs relative positioning to obtain high-precision positioning results. The invention improves the utilization rate of observation data, improves the service reliability of the ground-based augmentation system while effectively utilizing the data, and effectively expands the service scope of the ground-based augmentation system.

Description

technical field [0001] The invention relates to a ground-based augmentation system, in particular to a method for improving service reliability of the ground-based augmentation system. Background technique [0002] The ground-based augmentation system, that is, ground-based augmentation systems (abbreviation: GBAS), can achieve the purpose of improving the accuracy of satellite navigation by providing differential correction signals; the optimized positioning accuracy can range from millimeters to submeters; the system is Satellite positioning technology, computer network technology, digital communication technology and other high-tech multi-faceted and deeply crystallized products. Ground-based augmentation systems usually use VRS (Virtual Reference Station) technology to generate differential information. However, when the distance between base stations of the ground-based augmentation system is large or the environment in which the user terminal is located is poor, the e...

Claims

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Application Information

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IPC IPC(8): G01S19/11
CPCG01S19/11
Inventor 冯彦同
Owner QIANXUN SPATIAL INTELLIGENCE INC
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