A Spectral Fuzzy Suppression Method for Geo-Satellite Bistatic Synthetic Aperture Radar

A technology of synthetic aperture radar and ambiguity suppression, which is applied in the field of radar, can solve problems such as unusable multi-channel response functions, and achieve the effect of avoiding losses and reducing burdens

Active Publication Date: 2020-04-28
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the separation of GEO satellite bistatic SAR transceiver platforms and their complex motions, the multi-channel response function for reconstruction derived in the above method cannot be used in GEO satellite bistatic SAR, so the spectrum reconstruction method in the above literature It cannot be directly used in the GEO satellite bistatic SAR system

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 Spectral Fuzzy Suppression Method for Geo-Satellite Bistatic Synthetic Aperture Radar
  • A Spectral Fuzzy Suppression Method for Geo-Satellite Bistatic Synthetic Aperture Radar
  • A Spectral Fuzzy Suppression Method for Geo-Satellite Bistatic Synthetic Aperture Radar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] In order to facilitate those skilled in the art to understand the technical content of the present invention, the content of the present invention will be further explained below in conjunction with the accompanying drawings.

[0048] The present invention proposes a GEO satellite bistatic synthetic aperture radar spectrum ambiguity suppression method, by using multi-channel receiving technology at the receiving station of the GEO-SA-BiSAR system, increasing the sampling points in the azimuth direction under the condition of low pulse repetition frequency, Then in the signal processing stage, the difference between channels is used to suppress the fuzzy part in the spectrum, so as to obtain the echo spectrum without fuzziness.

[0049] In order to describe content of the present invention conveniently, at first the following terms are explained:

[0050] Term 1: Geosynchronous Synthetic Aperture Radar (GEO SAR)

[0051] GEO SAR is an active remote sensing sensor that p...

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 method for suppressing spectrum ambiguity of GEO satellite-based bistatic synthetic aperture radar. By using multi-channel receiving technology at the receiving station of the GEO-SA-BiSAR system, the sampling points in the azimuth direction are increased under the condition of low pulse repetition frequency, Then in the signal processing stage, the difference between channels is used to suppress the fuzzy part in the spectrum, so as to obtain the echo spectrum without fuzziness.

Description

technical field [0001] The invention belongs to the technical field of radar, and in particular relates to a suppression technology for azimuth spectrum ambiguity of a multi-channel Synthetic Aperture Radar (SAR, Synthetic Aperture Radar). Background technique [0002] Geosynchronous Synthetic Aperture Radar (Geosynchronous Synthetic Aperture Radar, GEOSAR) is located in a geosynchronous orbit of about 36,000km. It is currently a widely researched and rapidly developed synthetic aperture radar system. Compared with low-orbit SAR, GEO SAR has the advantages of large mapping width, wide monitoring coverage area, and short revisit cycle. Geosynchronous Orbit Satellite Bibase Synthetic Aperture Radar (GEO-SA-BiSAR) is an active remote sensing sensor that places the SAR payload on a geosynchronous orbit satellite, and then uses a high-speed moving airborne receiving platform to receive echo signals . [0003] Generally, in order to avoid spectral aliasing in azimuth, the pulse ...

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): G01S13/90
CPCG01S13/904G01S13/9004G01S13/9058
Inventor 武俊杰安洪阳何旬刘竹天王雯璟胡春宇黄川杨建宇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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