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Method and system for monitoring troposphere correction parameters of ground based augmentation system

A ground-based enhancement system and a technology for correcting parameters, applied in the field of navigation, can solve problems such as poor accuracy of flow layer delay error, and achieve the effects of improving accuracy, safety and reliability

Active Publication Date: 2015-09-30
NO 20 RES INST OF CHINA ELECTRONICS TECH GRP +1
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Problems solved by technology

[0008] The present invention provides a method and system for monitoring tropospheric correction parameters of a ground-based augmentation system to solve the problem of poor accuracy of tropospheric correction parameters and tropospheric delay errors in the prior art

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  • Method and system for monitoring troposphere correction parameters of ground based augmentation system

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0028] The GNSS ground-based augmentation system involved in the present invention includes a satellite navigation system, a ground station and airborne equipment. Among them, the satellite navigation system refers to a system in which navigation satellites generate ranging signals and send them to ground stations and airborne equipment. The ground station, that is, the GBAS ground facility, includes four reference receivers, a processor, a set of VDB (VHF Data Broadcast, very high frequency data broadcast) transmitter and receiver, based on satellite ranging signals and known references in advance The receiver accurately calculates the satellite pseudo-range correct...

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Abstract

The invention discloses a method and a system for monitoring troposphere correction parameters of a ground based augmentation system, which belong to the navigation technology field and improve precision, integrity, availability and continuity of the ground based augmentation system. The method comprises: obtaining first meteorological data and second meteorological data at present; correcting the troposphere parameters according to the first meteorological data, so as to obtain a first group of correction parameters; correcting the troposphere parameters according to the second meteorological data, so as to obtain a second first group of correction parameters; comparing the first and second groups of correction parameters with a meteorological statistical threshold, and outputting a third group of correction parameters according to the comparison result; obtaining a correction error according to augmentation data, navigation data and the third group of correction parameters, comparing the correction error with a preset correction error threshold, and giving an alarm and stopping the ground station augmentation service if the correction error is greater than the preset correction error threshold, or else carrying out the ground station augmentation service.

Description

technical field [0001] The invention relates to the technical field of navigation, in particular to a method and system for monitoring tropospheric correction parameters of a ground-based augmentation system. Background technique [0002] Global Navigation Satellite System (GNSS for short) is the general term for all satellite navigation systems and related augmentation systems working in orbit. With the construction of satellite navigation systems in countries and regions around the world, there are already four satellite navigation systems providing global or regional navigation services, including GPS, Beidou, GLONASS and GALILEO. In order to improve the navigation performance of the satellite navigation system, especially the integrity of the satellite navigation, to meet the requirements of civil aviation users in different flight stages and different navigation specifications, on the basis of the independent operation of the satellite navigation system, the Internation...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/41
CPCG01S19/07
Inventor 郑金华杨明胡耀坤梁绍一程松高虎
Owner NO 20 RES INST OF CHINA ELECTRONICS TECH GRP
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