A method for determining availability of integrity monitoring for satellite navigation systems

A satellite navigation system and integrity monitoring technology, applied in the field of satellite navigation system availability, can solve the problems of insufficient system-level integrity monitoring methods and less consideration of top-level design of the system.

Inactive Publication Date: 2017-01-11
CHINA AEROSPACE STANDARDIZATION INST
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Problems solved by technology

[0003] The traditional integrity monitoring method mainly focuses on the independent integrity monitoring capability of the receiver, which belongs to the category of stand-alone integrity monitoring, and has little consideration for the top-level design of the system, especially the distribution of monitoring stations and the equipment belonging to the monitoring station have not been comprehensively considered at the system level. There are many factors such as the reliability and maintenance of the monitoring station, the interruption of the monitoring station, the availability of the monitoring station, etc., and the system-level integrity monitoring method is insufficient.

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  • A method for determining availability of integrity monitoring for satellite navigation systems
  • A method for determining availability of integrity monitoring for satellite navigation systems
  • A method for determining availability of integrity monitoring for satellite navigation systems

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Embodiment Construction

[0037] The invention provides a method for determining availability of integrity monitoring of a satellite navigation system. Integrity monitoring refers to the basic integrity monitoring of the system, that is, the basic navigation system performs satellite orbit and clock error processing using the observation data of the deployed monitoring stations. At the same time, real-time analysis and processing is carried out on the space signal accuracy corresponding to the forecast ephemeris and clock error in the navigation message, and the corresponding integrity parameters are obtained and broadcast to the user together with the navigation message. Integrity parameters are used for integrity processing; the availability refers to the degree to which a product is in a workable or usable state when it is needed at any random moment and when it starts to perform tasks; the method of the present invention is as follows: Figure 6 As shown, the steps are as follows:

[0038] (1) Acco...

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Abstract

The invention provides an integrity detection availability determining method of a satellite navigation system. The method is characterized in that Markov chain (MC), Bayesian network (BN), interrupt analysis, and stress-strength analysis are comprehensively utilized, the availability of a single unit and the availability of a monitoring station are analyzed, and single-in-space monitoring accuracy (SISMA) is simulated, so as to determine the availability of the level-stage integrity detection and provide basis for optimizing the system-level integrity monitoring design and improving of availability of the single unit and the monitoring station. The method can be further popularized to be used for determining the availability of precise detecting and long-term predicting of a satellite orbit, time synchronizing and clock difference predicting, navigation message injection, constellation running management and other tasks, so as to provide important professional technical support for research, development and construction of the satellite navigation system.

Description

technical field [0001] The invention provides a satellite navigation system integrity monitoring availability determination method, which belongs to the technical field of satellite navigation system availability. Background technique [0002] Integrity is a measure of the degree of confidence in the information provided by a satellite navigation system. Since the positioning error caused by satellite failure can only be eliminated by early detection and notification to the user to eliminate the faulty satellite, integrity monitoring is an important means to ensure the normal operation of the navigation system. Integrity monitoring is mainly used to monitor the faults of the satellite navigation system, and timely alarm the detected faults, so as to ensure that it has a good working ability within the specified range. [0003] The traditional integrity monitoring method mainly focuses on the independent integrity monitoring capability of the receiver, which belongs to the c...

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G01S19/20
CPCG01S19/20
Inventor杨卓鹏郑恒顾长鸿王晋婧薛恩龚佩佩李海生周波
OwnerCHINA AEROSPACE STANDARDIZATION INST