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isar image imaging quality assessment method

An image imaging and quality assessment technology, applied in radio wave measurement systems, instruments, etc., can solve problems such as inability to analyze imaging quality, and achieve effective imaging quality

Inactive Publication Date: 2015-10-28
CHONGQING UNIV
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Problems solved by technology

However, the entropy of the ISAR image more characterizes the influence of noise and clutter in the ISAR image on the ISAR image. For the lack of target shape that may exist in the imaging process of real echo data, the entropy of the image cannot be used to analyze the impact of the target shape. Poor image quality caused by the absence of

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Embodiment Construction

[0027] Please refer to figure 2 , is a schematic flowchart of an embodiment of the ISAR image imaging quality assessment method provided by the present invention. The process of the method is mainly to evaluate the imaging quality of the ISAR image according to the mean value of the peak side lobe ratio PSLR of each scattering point on the edge contour of the strongest signal area of ​​the ISAR image, specifically including:

[0028] Step S11, extracting the strongest signal region of the ISAR image.

[0029] Preferably, the ISAR image is a two-dimensional image, and the strongest signal region is extracted from the ISAR image by using a watershed method.

[0030] Further, before the step S11, it also includes: a step of obtaining an ISAR image, that is, processing the ISAR echo data through an imaging algorithm to obtain an ISAR image; of course, this step is already familiar to those skilled in the art, and will not be repeated here.

[0031] Step S12, extracting the edge ...

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Abstract

The invention provides a method for evaluating the imaging quality of an ISAR (inverse synthetic aperture radar) image. The method comprises that the imaging quality of the ISAR image is evaluated according to an average value of peak side lobe ratios (PSLRs) of scattering points on an edge profile of a strongest signal area of the ISAR image. The imaging quality of the ISAR image can be effectively analyzed by adopting the method provided by the invention.

Description

technical field [0001] The invention relates to an image imaging quality analysis technology, in particular to an ISAR (Inverse Synthetic Aperture Radar, Inverse Synthetic Aperture Radar) image imaging quality evaluation method. Background technique [0002] ISAR (Inverse Synthetic Aperture Radar) refers to a radar that uses the relative motion of the target and the radar to coherently process the echo signals of the target at different angles of view to reconstruct the target image. The current ISAR imaging technology has made the resolution of the target develop from a point target to a 2D or even 3D target image. [0003] There are currently two methods for evaluating the imaging quality of ISAR images: [0004] One is to assume that the ISAR target is a point target, and analyze the relationship between the peak of the main lobe and the strongest side lobe at the target reflection point through PSLR (Peak Side Lobe Ratio) and ISLR (Integral Side Lobe Ratio, integral sid...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/40
Inventor 卢艳潘英俊陶荣辉周大秋江舸
Owner CHONGQING UNIV
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