Method for high-resolution radar compressed sensing imaging of moving object on ground

A ground moving target and compressed sensing technology, applied in the field of ground moving target high-resolution radar compressed sensing imaging, to achieve the effect of reducing the amount of echo data

Active Publication Date: 2014-03-12
INST OF ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

The huge amount of data puts forward high requirements on the storage capacity of the system,

Method used

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  • Method for high-resolution radar compressed sensing imaging of moving object on ground
  • Method for high-resolution radar compressed sensing imaging of moving object on ground
  • Method for high-resolution radar compressed sensing imaging of moving object on ground

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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that, in the drawings or descriptions of the specification, similar or identical parts all use the same figure numbers. Implementations not shown or described in the accompanying drawings are forms known to those of ordinary skill in the art.

[0024] Considering that there are only moving target signals in the echo data processed by ground stationary targets and clutter cancellation, and the number of moving targets in the observation scene is limited, the echo signals of moving targets meet the requirements of sparsity, so compressive sensing is adopted In theory, imaging and parameter estimation are performed on the echo signal after data compression. Compressed sensing theory points out that if the s...

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Abstract

The invention provides a method for high-resolution radar compressed sensing imaging of a moving object on ground. The method obtains relatively accurate imaging results and speed and position information of azimuth of the moving object on the basis of greatly compressing ground motion target echo data, and provides important information for accurate identification of the moving object on ground.

Description

technical field [0001] The invention relates to the technical field of remote sensing and radar imaging, in particular to a method for high-resolution radar compressed sensing imaging of ground moving targets. Background technique [0002] Synthetic Aperture Radar (SAR) can achieve all-weather, all-time, high-gain ground stationary target imaging, specifically to achieve high resolution in the range direction through wide signal frequency band design; through the movement of the radar carrier platform, equivalently A very long linear array is formed in space to achieve high resolution in azimuth. However, in many military applications, there are not only stationary targets but also some moving targets in the observation scene. Traditional SAR does not have the ability to detect and image moving targets, and moving targets can only be superimposed on stationary target images in the form of defocus. The azimuth position of the moving target with the velocity component perpen...

Claims

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Application Information

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IPC IPC(8): G01S13/90
CPCG01S7/295G01S13/582G01S13/9029
Inventor 洪文张群顾福飞罗迎吴一戎张冰尘蒋成龙
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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