GNSS system integrity evaluation method and device

A technology for integrity and error assessment, which is applied in the field of satellite navigation and can solve problems such as aircraft deviating from the route.

Active Publication Date: 2016-08-31
SICHUAN BEIDOU SATELLITE OF CHINA TECH CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0006] Integrity issues are of great concern to aviation, because users are flying at high speeds, and if faulty satellites cannot be detected and eliminated in time, the aircraft is likely to deviate from the route

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  • GNSS system integrity evaluation method and device
  • GNSS system integrity evaluation method and device
  • GNSS system integrity evaluation method and device

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Embodiment Construction

[0041] The following description and drawings illustrate specific embodiments of the invention sufficiently to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of embodiments of the present invention includes the full scope of the claims, and all available equivalents of the claims. These embodiments of the present invention may be referred to herein, individually or collectively, by the term "invention", which is for convenience only and is not intended to automatically limit the application if in fact more than one invention is disclosed The scope is any individual invention or inventive concept.

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Abstract

The invention provides a GNSS system integrity evaluation method and a GNSS system integrity evaluation device. The GNSS system integrity evaluation method comprises the steps of: acquiring observation data of a navigation receiver; performing gross error detection on the observation data, and generating a correction number; evaluating an abnormity when a gross error detection result indicates a residual error abnormity; carrying out error evaluation according to the correction number when the abnormity threatens the integrity; and calculating and outputting a hazard misleading information probability HMI, and sending out an alarm. The GNSS system integrity evaluation method provided by the invention can be used for evaluating integrity of GNSS comprehensively and accurately, acquiring the operation state of the GNSS system in time, carrying out fault isolation and repair in time, and improving the accuracy and stability of the GNSS system.

Description

technical field [0001] The invention belongs to the technical field of satellite navigation, and in particular relates to a integrity monitoring and estimation method. Background technique [0002] With the popularization of technology and its application, the global satellite navigation system (GNSS) receiver has become one of the core components of airborne electronic equipment. The performance of GNSS receivers is generally evaluated by four aspects: accuracy, integrity, continuity and availability. Among them, the integrity is mainly a requirement for the safety of the receiver in the application, so in the application with high safety requirements, the integrity is the key problem that must be solved. [0003] Integrity is generally defined as: Integrity is a probability. In a certain period of time, at any point within the system coverage area, the position error does not exceed the alarm threshold (Alarm Limit), and no alarm is issued to the user within the alarm tim...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/23
CPCG01S19/20G01S19/23
Inventor 唐富春高锋谭双福衡国彬徐靖然
Owner SICHUAN BEIDOU SATELLITE OF CHINA TECH CO LTD
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