Rapid time-domain imaging method suitable for circular synthetic aperture radar

A technology of synthetic aperture radar and time-domain imaging, which is applied in the directions of utilizing re-radiation, radio wave reflection/re-radiation, and measurement devices, which can solve the problems of increasing the difficulty of CSAR high-precision imaging processing and the large amount of echo data

Inactive Publication Date: 2016-11-23
南京特艺科技有限公司
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] CSAR refers to a radar system in which the radar platform (or radar station) moves in a 360° circle or a wide-angle arc around the observation scene, and the beam always points to the target scene for observation and imaging; this radar system has the ability to obtain target scattering information, high The advantages of high-resolution imaging and the...

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
  • Rapid time-domain imaging method suitable for circular synthetic aperture radar
  • Rapid time-domain imaging method suitable for circular synthetic aperture radar
  • Rapid time-domain imaging method suitable for circular synthetic aperture radar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0048] The present invention will be further explained below in conjunction with the accompanying drawings.

[0049] figure 1 It is a schematic flow chart of the circumferential SAR fast time-domain imaging method of the present invention; as figure 1 As shown, the whole process includes three processing steps: the first step, sub-aperture division and initial sub-image generation; the second step, recursive sub-aperture merging and sub-image generation; the third step, full-aperture merging and final image generation.

[0050] The circular SAR fast time-domain imaging method of the present invention is verified through simulation experiments and measured data, and theoretical analysis and experimental results prove the effectiveness of the present invention.

[0051] In the simulation experiment, the system simulation parameters among the present invention are as shown in table 1 below;

[0052]

[0053]

[0054] Table 1

[0055] The imaging scene setting and target ...

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 a rapid time-domain imaging method suitable for a circular synthetic aperture radar. The whole process of the method comprises three processing steps of 1 subaperture partition and initial subimage generation, 2 circular recursion subaperture merging and subimage generation and 3 full aperture merging and final image generation. The rapid time-domain imaging method suitable for the circular synthetic aperture radar has the advantages that a subaperture processing technology is adopted, the calculated amount of the time-domain imaging method is greatly reduced at the time of keeping the high precision of the time-domain imaging method, therefore, the imaging processing efficiency is improved, rapid and high-precision imaging process of the CSAR is achieved, and a high-quality CSAR image is obtained.

Description

technical field [0001] The invention belongs to the field of synthetic aperture radar (Synthetic Aperture Radar, SAR) imaging, and relates to a fast time-domain imaging method suitable for circular synthetic aperture radar (Circular SAR, CSAR). Background technique [0002] CSAR refers to a radar system in which the radar platform (or radar station) moves in a 360° circle or a wide-angle arc around the observation scene, and the beam always points to the target scene for observation and imaging; this radar system has the ability to obtain target scattering information, high The advantages of high-resolution imaging and the ability to realize three-dimensional imaging have attracted widespread attention in recent years; however, the special motion trajectory has brought new problems and challenges to CSAR data processing, such as the large amount of echo data and the coupling of echo distance and azimuth. These have greatly increased the difficulty of CSAR high-precision imag...

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
CPCG01S13/9017G01S13/9088
Inventor 张洪林李迎雪王勇
Owner 南京特艺科技有限公司
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