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

Method for assessing the impact of auxiliary information delay in GNSS/INS deep combination

A technology of auxiliary information and deep combination, applied in satellite radio beacon positioning systems, instruments, measuring devices, etc., can solve the problems of not considering the INS auxiliary delay error, no method of evaluating the impact, and no literature indicating the maximum auxiliary delay time, etc.

Active Publication Date: 2016-03-16
WUHAN UNIV
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most researchers realize GNSS / INS deep integration through data post-processing on software platforms, without considering the impact of INS-assisted delay errors, so that there is no method to evaluate the impact of auxiliary information delay on INS-assisted GNSS tracking loops. There is no literature to point out the acceptable maximum assistance delay time of the INS-assisted GNSS tracking loop

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
  • Method for assessing the impact of auxiliary information delay in GNSS/INS deep combination
  • Method for assessing the impact of auxiliary information delay in GNSS/INS deep combination
  • Method for assessing the impact of auxiliary information delay in GNSS/INS deep combination

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] The invention is an evaluation method for the influence of INS auxiliary delay on GNSS tracking loop, which can be used to analyze the maximum auxiliary delay time that a GNSS / INS deep combination system can bear, and consider system hardware design cost and system performance according to the maximum auxiliary delay time.

[0041] Taking the INS-assisted carrier tracking loop as an example, the present invention will be described in detail in conjunction with the accompanying drawings. The accompanying drawings and specific implementations are illustrative of the present invention, and do not limit the present invention.

[0042] 1. Construction of INS auxiliary tracking ring mathematical model

[0043] In a real-time GNSS / INS deep integrated system, the delay of INS auxiliary information is inevitable, and the impact of auxiliary information delay needs to be systematically analyzed. The principle structure diagram of the INS auxiliary carrier tracking loop is shown i...

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 provides an evaluation method of an auxiliary information delay effect in a GNSS / INS deep combination. The method comprises the following steps: (1) establishing the INS auxiliary tracking loop mathematical model of a Laplace domain according to the principle structure of an INS auxiliary tracking loop, (2) according to the INS auxiliary tracking loop mathematical model, establishing the error transmission model between INS auxiliary delay and a loop tracking error, (3) transmitting the error transmission model into a time domain, using a transient response analysis method to simulate the change of the loop tracking error brought by the INS auxiliary delay of the INS auxiliary tracking loop under a dynamic excitation signal. The method can be used for evaluating the effect of the auxiliary information delay to the INS auxiliary GNSS tracking loop performance, and thus the real-time performance design and tracking loop optimization in GNSS / INS deep combination system development are guided.

Description

technical field [0001] The invention belongs to the technical field of real-time evaluation of GNSS / INS deep combination system, and in particular relates to a method for evaluating the delay influence of auxiliary information in GNSS / INS deep combination. Background technique [0002] GNSS / INS integrated navigation technology utilizes the complementary advantages of GNSS (Global Satellite Navigation System) and INS (Inertial Navigation System), greatly improves the continuity and integrity of the system, and is widely used in the field of navigation and positioning . According to the depth of information fusion, GNSS / INS integrated navigation technology is divided into loose combination, tight combination and deep combination. Both loose combination and tight combination are the integration of GNSS and INS at the data processing level, and are mainly GNSS-assisted INS. Compared with loose combination and tight combination, deep combination is the information fusion of GNS...

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): G01S19/23
CPCG01S19/23
Inventor 张提升章红平张鹏辉班亚龙牛小骥
Owner WUHAN UNIV
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