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

Platform attitude estimation method based on global satellite navigation signal three-dimensional wave structure

A global satellite navigation and attitude estimation technology, applied in the fields of navigation and radar detection, can solve the problem of low measurement accuracy of the micro inertial navigation attitude information system, achieve high attitude accuracy, improve utilization, and avoid occlusion.

Active Publication Date: 2020-04-17
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the measurement accuracy of the developing miniature inertial navigation attitude information system is not high

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
  • Platform attitude estimation method based on global satellite navigation signal three-dimensional wave structure
  • Platform attitude estimation method based on global satellite navigation signal three-dimensional wave structure
  • Platform attitude estimation method based on global satellite navigation signal three-dimensional wave structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0033] The invention adopts the dipole or the magnetic loop antenna of the electromagnetic vector sensor fixed on the platform to receive the global navigation satellite system signals such as GPS. The channels are separated from each other to form array data, and the signal processing method is used to calculate the platform attitude.

[0034] 1. Electromagnetic vector sensor receiving signal model

[0035] The direction of electromagnetic wave signal propagation is as figure 1 shown.

[0036] In the geodetic coordinate system, the parameters used for the direction of arrival of electromagnetic waves in space said, see figure 1 , represent the azimuth and elevation angles respectively, -π / 2≤θ≤π / 2, Then the arrival vector is The polarization properties of electromagnetic waves are represented by the polarization ellipse descriptor (γ, η), the polariz...

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 platform attitude estimation method based on a global satellite navigation signal three-dimensional wave structure, and belongs to the technical field of radar detection andnavigation. According to the invention, a dipole or a magnet ring antenna of each electromagnetic vector sensor fixed on a platform is used for receiving GPS and other global navigation satellite signals to form array data; when a synchronous sampling platform conducts attitude measurement, sensors are matched and superposed to receive satellite signals; the attitude parameter corresponding to thedecoded modulus and the maximum value is the captured motion platform attitude; the attitude measurement refreshing period of the synchronous sampling platform is 1 chip period; when an asynchronoussampling platform conducts attitude measurement, each receiving unit collects information source satellite complex data of a plurality of decoding chips; a multi-dimensional tensor specific data structure is presented according to polarization array received data, and attitude estimation is realized by using array signal processing methods such as a spatial multi-signal classification eigenvalue algorithm and multi-dimensional tensor decomposition; and the attitude measurement refreshing period of the asynchronous sampling platform is a plurality of chip periods. According to the invention, anattitude measurement navigation technology is developed.

Description

technical field [0001] The invention relates to a platform attitude estimation method based on a three-dimensional wave structure of a global satellite navigation signal, belonging to the technical field of radar detection and navigation. Background technique [0002] The attitude information of the motion platform is mostly obtained from the fusion of other information by the inertial navigation sensor. At present, the attitude information system of the motion platform is complex in structure and has a high failure rate. The measurement accuracy is not high. In some aerospace applications, there are special requirements for attitude navigation, such as fast measurement speed, high precision, small volume, mass, energy consumption, high acceleration resistance, radiation resistance, extreme temperature resistance, vibration resistance, etc. These requirements make attitude navigation equipment costly. The received electromagnetic wave information is closely related to the...

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 Applications(China)
IPC IPC(8): G01S19/45G01C21/00G01C21/08
CPCG01S19/45G01C21/005G01C21/08
Inventor 陈广东王媛万思钰刘耀辉
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