Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Foundation augmentation system integrity monitoring method based on stable distribution

A ground-based enhancement system and integrity monitoring technology, applied in the field of satellite navigation, to achieve the effect of improving accuracy and reliability, and improving integrity and continuity

Pending Publication Date: 2020-12-25
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems existing in the existing system, the present invention provides a ground-based augmentation system integrity monitoring method based on stable distribution, collect data through the ground station module and perform GBAS integrity performance monitoring, use the collected data, pass the stable distribution threshold Modeling approach to assess integrity events under the H2 risk assumption

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Foundation augmentation system integrity monitoring method based on stable distribution
  • Foundation augmentation system integrity monitoring method based on stable distribution
  • Foundation augmentation system integrity monitoring method based on stable distribution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0035] The ground-based augmentation system integrity monitoring method under multiple assumptions designed by the present invention models each threshold in GBAS integrity monitoring by introducing a stable distribution, and improves the accuracy of threshold modeling under the H2 integrity risk assumption of GBAS , thus improving the usability and security of the GBAS system, such as image 3 As shown, it specifically includes the following steps:

[0036] The ground station first performs differential processing on the collected data, that is, decodes the GNSS satellite signal, smoothes the pseudo-range with the carrier, generates pseudo-range correction information, and sends the pseudo-range correction information to the airborne user terminal in the form of a broadcast message.

[0037] Integrity monitoring, that is, a series of integrity mo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a foundation augmentation system integrity monitoring method based on stable distribution. Through a method of combining stable distribution with maximum likelihood parameter estimation and quantile calculation, threshold modeling is performed on monitoring quantities such as code / carrier divergence values and carrier-to-noise ratios involved in a ground station module ofa GBAS system based on H2 risk hypothesis, and the accuracy of threshold modeling is improved in a mode of dividing model intervals according to elevation angles and selecting confidence parameters ina monitoring process of the ground station module in the modeling process. The method solves the problems that a traditional threshold model depends too much on an empirical formula, the model is notaccurate enough and the applicability is low, and the credibility and availability of the GBAS integrity monitoring system are improved through more accurate threshold modeling.

Description

technical field [0001] The invention relates to a method for monitoring integrity of a ground-based augmentation system based on stable distribution, and belongs to the technical field of satellite navigation. Background technique [0002] The GNSS Ground-Based Augmentation System (GBAS) provides differential corrections and ensures the integrity of the navigation solution for aircraft flying precision approaches. The data processing system of GBAS is divided into two modules: the ground algorithm module and the user algorithm module. The ground module is mainly responsible for generating pseudorange correction information and integrity enhancement information, and monitoring various integrity risk failures; the user module is mainly responsible for Perform the tasks of pseudorange correction, position calculation and protection level calculation. [0003] In order to ensure the integrity performance required for operation, the GBAS ground station needs to monitor the space...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01S19/20
CPCG01S19/20
Inventor 刘海颖孙颢陈捷马莹
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com