Passive radar direction-finding method and system based on dual receiver elliptical scanning

A passive radar and elliptical scanning technology, which is applied in radio wave measurement systems, measurement devices, radio wave reflection/re-radiation, etc., can solve problems such as target loss, large footprint, and inability to monitor key areas. Effects of reduced footprint, reduced resolution, and reduced side lobes

Inactive Publication Date: 2018-08-03
ZHOUKOU NORMAL UNIV
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to achieve high azimuth resolution, this system requires a large radius of rotation and a large footprint
Due to the circular scanning of the receiver of the system, the azimuth resolution of the target in all directions is the same, and it is impossible

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
  • Passive radar direction-finding method and system based on dual receiver elliptical scanning
  • Passive radar direction-finding method and system based on dual receiver elliptical scanning
  • Passive radar direction-finding method and system based on dual receiver elliptical scanning

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0057] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0058] The purpose of the present invention is to provide a passive radar direction finding method and system based on dual receiver ellipse scanning, which can improve the accuracy of direction finding and reduce the area occupied.

[0059] In order to make the above objectives, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to...

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 passive radar direction-finding method and system based on dual receiver elliptical scanning. The passive radar direction-finding method includes: acquiring a first echo signal of a first receiver; acquiring a second echo signal of a second receiver, and constructing a first signal recognition matrix according to a motion trajectory function of the first receiver; determining a first direction-finding preprocessing vector according to the first echo signal and the first signal recognition matrix; constructing a second signal recognition matrix according to a motion trajectory function of the second receiver; determining, according to the second echo signal and the second signal recognition matrix, a second direction-finding preprocessing vector; determining the direction of the object to be tested according to the first direction-finding preprocessing vector and the second direction-finding preprocessing vector. The method adopts the elliptical scanning mode,can finely distinguish a key monitoring area. In addition, by synthesizing the direction-finding results of the two receivers, the resolution is reduced and the side lobe is greatly reduced, so that the direction-finding performance of the system is significantly improved.

Description

technical field [0001] The invention relates to the field of passive radar direction finding, in particular to a passive radar direction finding method and system based on dual-receiver ellipse scanning. Background technique [0002] The current radar direction finding methods for fixed targets are mainly divided into active radar direction finding and passive radar direction finding. Active direction finding radar includes real aperture radar or array antenna direction finding, and its azimuth resolution is 0.89λD, where λ is the signal wavelength, and D is the radar aperture or array antenna length. In order to improve the accuracy of direction finding, active direction finding radar systems generally use large-aperture antennas or long array antennas, so the system is expensive and occupies a large area. In addition, due to active electromagnetic exposure, its survivability on the battlefield is worrying. [0003] In the passive radar direction finding method, it is rep...

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): G01S7/41G01S13/88
CPCG01S7/41G01S13/88
Inventor 刘玉春朱海王洪雁朱思峰程琳朱磊豆桂平
Owner ZHOUKOU NORMAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap