High-resolution polarization SAR ship target and interference target identification method

A high-resolution, jamming target technology, applied in the field of high-resolution polarization SAR ship target and jamming target identification, can solve the problem that the advantages are not well combined, and achieve the effect of reducing false alarms and improving the detection effect

Active Publication Date: 2015-01-14
NAVAL AERONAUTICAL & ASTRONAUTICAL UNIV PLA
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Problems solved by technology

In the detection of ship targets, the use of polarization scattering characteristics and peak features have their own advantages, but the two have been used separately in ship detection, and the advantages of the two have not been well combined

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  • High-resolution polarization SAR ship target and interference target identification method
  • High-resolution polarization SAR ship target and interference target identification method
  • High-resolution polarization SAR ship target and interference target identification method

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Embodiment Construction

[0015] The present invention will be described in further detail below in conjunction with the accompanying drawings. With reference to the accompanying drawings in the description, the specific implementation of the present invention is divided into the following steps:

[0016] (1) Input the high-resolution polarimetric SAR image data into the computing device 1, and the computing device 1 completes the preliminary target detection function in the SAR image. By analyzing the energy image of the input data, according to the basic geometric characteristics (area, length and width) of each target, Ratio, like roundness), preliminarily exclude obvious non-ship targets, and obtain target slice data after preliminary judgment.

[0017] (2) Computing device 2 accepts the target slice data obtained by computing device 1, performs Krogager polarization decomposition on the full polarization information corresponding to the target slice, and decomposes the target into the sum of three...

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Abstract

The invention discloses a high-resolution polarization SAR ship target and interference target identification method, and belongs to the field of SAR image processing. The method is used for removing a false alarm caused by an interference target suspected as a ship in the SAR image ship target detection process. The relation among the polarization information of a ship target, the scattering intensity peak value and the structure is utilized comprehensively, Krogager polarization decomposition is carried out on a target section extracted through a ship target detecting algorithm, then a target complex structure area, namely, a target peak value area, is obtained through the changing curve of the spirochete scattering proportion and the peak value area through calculation, the spirochete scattering proportion of the peak value area is extracted, identification statistical magnitude is formed, judgment is carried out through an experience threshold, and an identification result is obtained. The method has good identification capacity on the ship target in the high-resolution polarization SAR image and the interference target suspected as the ship, the false alarm caused by the interference target in the SAR image ship target detection process can be reduced, and the utilization and popularization value is achieved.

Description

technical field [0001] The invention relates to a method for detecting a ship target by using the polarization scattering characteristics and structural features of the target in the field of SAR image processing, that is, a high-resolution polarization SAR ship target and interference target identification method, which can be used to reduce the detection of ship targets in SAR images False alarms caused by interfering with the target during the process. Background technique [0002] Synthetic Aperture Radar (SAR) has the characteristics of all-day, all-weather, wide range and high resolution, and it is one of the important means in the detection of surface ships. At present, ship target detection in SAR images mainly uses scale shape features, texture features, peak features, etc. as the main feature basis for ship target identification. Compared with single-channel SAR images, polarimetric SAR data can more comprehensively describe the scattered echo information of the t...

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Application Information

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IPC IPC(8): G06K9/62
CPCG06V20/13
Inventor 周伟许成斌王国庆孙璐丛瑜关键
Owner NAVAL AERONAUTICAL & ASTRONAUTICAL UNIV PLA
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