Target identification method and system for SAR (synthetic aperture radar)

A synthetic aperture radar and target recognition technology, applied in the field of radar, can solve the problems of low target recognition rate of synthetic aperture radar, unable to meet target recognition performance requirements, slow recognition speed, etc., to improve target recognition performance, improve target recognition rate, The effect of improving the recognition speed

Active Publication Date: 2014-03-12
BEIJING INST OF ENVIRONMENTAL FEATURES
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Problems solved by technology

[0009] However, the inventors of the present invention have found that the target recognition rate of the synthetic aperture radar using the existing target recognition method is low, and the recognition speed is relatively slow, which cannot meet the performance requirements for target recognition; it is necessary to provide a method that can improve the synthesis Target recognition method and system for target recognition performance of aperture radar

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  • Target identification method and system for SAR (synthetic aperture radar)
  • Target identification method and system for SAR (synthetic aperture radar)
  • Target identification method and system for SAR (synthetic aperture radar)

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[0064] 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 with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many of the details listed in the specification are only for readers to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0065] As used herein, terms such as "module" and "system" are intended to include computer-related entities such as, but not limited to, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a module may be, but is not limited to being limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and / or a computer. For example, both an applicatio...

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Abstract

The invention discloses a target identification method and a target identification system for an SAR (synthetic aperture radar). The method comprises the following steps that the complex image data of a tested SAR image is subjected to SCM (subaperture cross-correlation magnitude) target signal-to-noise ratio improvement processing; the processed image data is subjected to threshold division, and then, a target outline image of the tested SAR image is determined; after the Fourier description sub features are extracted on the target outline images, the feature vector of the tested SAR image and the feature vector of each training SAR image are obtained, and the similarity between the tested SAR image and each training SAR image is calculated; the target category of the training SAR image with the highest similarity to the tested SAR image is identified into the target category of the tested SAR image. The method and the system provided by the invention have the advantages that according to the technical scheme, the target identification rate is improved through improving the image data quality, and the identification speed is also accelerated, so the target identification performance is improved.

Description

technical field [0001] The invention relates to radar technology, in particular to a target recognition method and system for synthetic aperture radar. Background technique [0002] Due to the advantages of all-weather and all-weather detection, synthetic aperture radar (SAR) has been widely used in various aviation and aerospace earth observation and intelligence reconnaissance, as well as environmental remote sensing and resource exploration. [0003] When synthetic aperture radar detects targets on the ground, water surface or in the air, the detected SAR image data contains both target image data and noise data generated by background clutter. [0004] At present, a target recognition system of a synthetic aperture radar recognizes a target according to the image data of the measured SAR image, that is, the existing target recognition method of the synthetic aperture radar includes: [0005] S101: After the existing target recognition system sequentially performs prepro...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41
CPCG01S7/412
Inventor 胡利平李胜
Owner BEIJING INST OF ENVIRONMENTAL FEATURES
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