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

Bistatic/multistatic radar image PS (permanent scatterer) point associating method based on sliding scattering center

A technology of sliding scattering center and bistatic radar, which is applied in the direction of radio wave reflection/re-radiation, utilization of re-radiation, measurement devices, etc., and can solve the problem of severe decorrelation between radar images

Active Publication Date: 2015-08-12
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF2 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The present invention proposes a bistatic / multistatic radar image PS point correlation method based on the sliding scattering center, which is used to solve the problem of multiple radars observing the same scene from different viewing angles with large differences due to the violent fluctuation of the target scattering characteristics. Serious problem of decorrelation between radar images, complete coherent registration processing between multi-angle radar images

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
  • Bistatic/multistatic radar image PS (permanent scatterer) point associating method based on sliding scattering center
  • Bistatic/multistatic radar image PS (permanent scatterer) point associating method based on sliding scattering center
  • Bistatic/multistatic radar image PS (permanent scatterer) point associating method based on sliding scattering center

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] The present invention provides a PS point correlation method of a bistatic / multistatic radar image based on a sliding scattering center. The present invention will be described in detail below in conjunction with the accompanying drawings.

[0050] Such as figure 1 and figure 2 As shown, for the PS point target we need to analyze under different observation angles, its sliding scattering center is not at the same position, and its spatial spectrum occupies a different range in the two-dimensional wavenumber domain.

[0051] Such as image 3 As shown, for the PS point target, record the RCS value of each equivalent sliding scattering point on the target contour line σ 0 (x, y), remember that the position of the sliding scattering center on the same section of the target contour observed by radar 1, 2 and bistatic measurement 1.2 between 1 and 2 is S 1 ,S 2 ,S, monostatic radar image 1, 2 and S 1 ,S 2 The corresponding point is the point with the same name that nee...

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 bistatic / multistatic radar image PS (permanent scatterer) point associating method based on a sliding scattering center, which accurately registers multiple SAR images viewed from different angles, and belongs to the field of bistatic / multistatic synthetic aperture radars. The method comprises: obtaining an approximate target outline scattering function by performing parabolic fitting on a PS point target outline function in a bistatic image; obtaining a homonymy point in a monostatic radar image by performing moving window search on the monostatic radar image; and finally, registering the monostatic radar image according to the homonymy point obtained through the search. The method fully utilizes the characteristics of the sliding scattering PS point target, solves a puzzle that a conventional PS point registering method is just capable of accurately registering images observed from a single angle, and has significant meaning to multi-angle radar image fusion and interference processing.

Description

technical field [0001] The invention relates to a bistatic / multistatic radar image PS point correlation method based on a sliding scattering center, and belongs to the bistatic / multistatic synthetic aperture radar technical field. Background technique [0002] Synthetic Aperture Radar (SAR) is an all-weather, all-weather high-resolution microwave remote sensing imaging radar that can be installed on aircraft, satellites, missiles and other flying platforms. Since its invention in the 1950s, it has been widely used in many fields, such as disaster control, vegetation analysis, microwave remote sensing and other fields. [0003] Bistatic / Multistatic SAR (Bistatic / Multistatic SAR) is an emerging radar system, which is characterized by the separation of the transmitting platform and the receiving platform in space. The radar system has unique advantages in many aspects: some radars are used as transmitters, and the rest are used as receivers to form a radar network that can obt...

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): G01S13/90
CPCG01S13/90G01S13/9023G01S13/9058
Inventor 曾涛胡程王晶阳向寅龙腾毛二可
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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