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Synthetic aperture radar (SAR) azimuth parameter control method and device and storage medium

A technology of synthetic aperture radar and parameter control, which is applied in measuring devices, radio wave reflection/re-radiation, utilization of re-radiation, etc. It can solve problems such as the design of azimuth parameters is too simple and it is difficult to meet the requirements of engineering applications

Active Publication Date: 2019-10-08
INST OF ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

[0003] Although the TopSAR mode can obtain good imaging performance, it needs to perform azimuth beam scanning, that is, scan each subband from back to front in the azimuth direction. In related technologies, the azimuth parameter design in the TopSAR mode is too simple to satisfy Engineering Application Requirements

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  • Synthetic aperture radar (SAR) azimuth parameter control method and device and storage medium
  • Synthetic aperture radar (SAR) azimuth parameter control method and device and storage medium
  • Synthetic aperture radar (SAR) azimuth parameter control method and device and storage medium

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Embodiment Construction

[0025] The technical solution of the present application will be further elaborated below in combination with the accompanying drawings and specific embodiments. It should be understood that the embodiments provided here are only used to explain the present application, and are not intended to limit the present application. In addition, the embodiments provided below are some embodiments for implementing the application, rather than providing all the embodiments for implementing the application. In the case of no conflict, the technical solutions described in the embodiments of the application can be combined in any manner implement.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are only for the purpose of describing specific embodiments, and are not int...

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Abstract

The invention discloses an SAR azimuth parameter control method and device and a storage medium. The method comprises that the azimuth scanning angle speed of each subband in the range direction in aTopSAR mode is determined according to relation between orientation resolution in the strip mode and orientation resolution in the TopSAR mode; imaging time length and regression time length of each subband are determined on the basis geometric splicing relation between two adjacent imaging areas in the azimuth of the same subband in the TopSAR mode; an azimuth scanning angle corresponding to eachsubband is determined according to the azimuth scanning angle speed and the imaging time length of the corresponding subband; and the azimuth imaging length of each subband is determined according tothe imaging time length of the corresponding subband. The imaging quality requirement for images in engineering application can be met, and the azimuth parameters in the TopSAR mode can be determinedrapidly according to geometric splicing relation of two adjacent imaging areas.

Description

technical field [0001] The present application relates to the technical field of Synthetic Aperture Radar (SAR), in particular to a method, device and storage medium for controlling azimuth parameters of SAR. Background technique [0002] SAR has the characteristics of all-weather and all-time imaging. As an imaging radar, improving the mapping bandwidth is the pursuit goal of SAR. The Terrain Observation with Progressive Scans (Terrain Observation with Progressive Scans) mode (also known as the TopSAR mode) of synthetic aperture radar with high resolution and wide swath is similar to the scanning ScanSAR mode in terms of resolution and swath performance, but the TopSAR mode overcomes the ScanSAR mode The azimuth scallop effect, and the signal-to-noise ratio and azimuth ambiguity performance are better than ScanSAR mode. The TopSAR mode was used for imaging applications on the German TerraSAR-X satellite for the first time. [0003] Although the TopSAR mode can obtain goo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/90G01S7/02G01S7/41
CPCG01S7/02G01S7/41
Inventor 吕继宇齐向阳郑慧芳邓云凯赵凤军
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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