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

A Dynamic Constellation Selection Method for Advanced Receiver Autonomous Integrity Monitoring

An integrity monitoring and receiver technology, applied in the field of satellite navigation, which can solve the problems of increasing the probability of failure, increasing the number of failure modes, and exacerbating the performance difference of different constellations, so as to reduce the complexity and calculation storage pressure, and reduce the constellation. number of satellites, the effect of simplifying the signal processing process

Active Publication Date: 2022-05-20
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Advanced receiver autonomous integrity monitoring is implemented based on multi-constellation satellite navigation systems, but existing studies have shown that the spatial performance differences between different satellite navigation systems will reduce the availability of ARAIM, especially satellite failures, satellite service interruptions, etc. will aggravate the gap between different constellations. The difference in performance has a serious impact on the global availability of ARAIM; at the same time, current research shows that under normal constellation conditions, two global satellite navigation system satellites can basically achieve ARAIM's global seamless coverage; in addition, more constellations and more satellites The use of will increase the number of failure modes, increase the probability of failure, and increase the burden and pressure of receiver data processing

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
  • A Dynamic Constellation Selection Method for Advanced Receiver Autonomous Integrity Monitoring
  • A Dynamic Constellation Selection Method for Advanced Receiver Autonomous Integrity Monitoring
  • A Dynamic Constellation Selection Method for Advanced Receiver Autonomous Integrity Monitoring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] Below in conjunction with accompanying drawing, the technical scheme of invention is described in detail:

[0037] The overall process of this method is as follows figure 1 Shown: the above process needs to complete the following work:

[0038] A constellation dynamic selection method for autonomous integrity monitoring of advanced receivers, the specific steps are as follows:

[0039] Step 1, receive the multi-constellation satellite navigation signal and the ground control of ARAIM through the airborne navigation receiver

[0040] The property support information ISM provided by the control system;

[0041] Step 2, the satellite navigation signal of the navigation receiver is down-converted, baseband signal processed and data demodulated,

[0042] Obtain the information of each satellite, including ephemeris and pseudorange, and perform the initial positioning calculation;

[0043] Step 3, use the ephemeris to calculate the elevation angle θ of each satellite j,k a...

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 constellation dynamic selection method for autonomous integrity monitoring of advanced receivers, which belongs to the field of satellite navigation technology. ARAIM is a receiver-side fault diagnosis and integrity monitoring technology based on multi-constellation satellite navigation systems. It is aimed at different satellite navigation systems. The difference in the geometric configuration of the system space constellation will lead to the increase of the location difference of the fault subset, which will directly lead to the problem that the global availability of ARAIM is reduced. A dynamic selection method of the constellation is proposed. The geometric configurations of different constellations are evaluated and sorted, and the two systems with the best space constellations are selected for positioning calculation and integrity monitoring. The method can effectively reduce the influence of different system space configuration differences on the availability of ARAIM, improve the availability of ARAIM, reduce computational complexity, and improve the computational efficiency of integrity monitoring. This method is suitable for autonomous integrity monitoring applications of satellite navigation receivers, and the same idea is applicable to fault diagnosis and integrity monitoring of other signal systems.

Description

technical field [0001] The invention belongs to the technical field of satellite navigation, and in particular relates to a constellation dynamic selection method for autonomous integrity monitoring of advanced receivers. Background technique [0002] Receiver Autonomous Integrity Monitoring (RAIM) is a method for satellite navigation receivers to independently diagnose and eliminate faults based on redundant GNSS information. The RAIM algorithm is included in the receiver, so it is called autonomous monitoring. RAIM is also the most direct, most timely, most widely used, most deeply researched, and most computationally efficient integrity monitoring method. RAIM technology only supports lateral navigation, and cannot meet the performance requirements of vertical guidance navigation channels below 200 feet (Localized Performance with Vertical guidance, LPV-200) defined by ICAO. Advanced Receiver Autonomous Integrity Monitoring (Advanced RAIM, ARAIM) is a solution designed b...

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
Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/20G01S19/23
CPCG01S19/20G01S19/23Y02D30/70
Inventor 孟骞曾庆化刘建业许睿曾世杰黄河泽史进恒宦国耀
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