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Image enhancing method for ship radar

A marine radar and image enhancement technology, applied to radio wave measurement systems, instruments, etc., to achieve the effects of eliminating small gaps, facilitating use, and suppressing noise points

Inactive Publication Date: 2012-11-28
成都成电电子信息技术工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems in image data processing in the existing marine radar technology field, and propose a method for enhancing marine radar images

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  • Image enhancing method for ship radar
  • Image enhancing method for ship radar
  • Image enhancing method for ship radar

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Embodiment Construction

[0031] In the following, specific embodiments of the present invention are given in conjunction with the drawings. It should be noted that the parameters in the embodiments do not affect the generality of the present invention.

[0032] From the perspective of image processing, the enhancement of marine radar data is mainly to suppress background and noise, and highlight the target as much as possible, thereby improving the signal-to-noise ratio. The performance of enhancement algorithms for marine radar images is essential for designing signal and information processing algorithms such as target detection, estimation, tracking and recognition. The flow diagram of the embodiment of the present invention is as figure 1 As shown, the marine radar in this example scans a week for 2.5s, with 3,600 scan data in a week, and 1,000 data points per scan line. The details are as follows:

[0033] S1. Initialize, complete the initial setting of parameters. Parameters can be selected accordi...

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Abstract

The invention discloses an image enhancing method for a ship radar. Due to the noise interference in radar image data, certain isolated points, isolated regions, small gaps and holes exist apart from a needed target, which influence the post-processing accuracy. The method is disclosed specific to the defect and requirement. By performing quick time accumulation, CFAR (Constant False Alarm Rate) processing and slow time accumulation, signal attenuation is avoided as much as possible while noise is removed, an appropriate morph operator and an appropriate filtering window are selected, isolated noise generated after binaryzation is suppressed, fine gaps inside an object are eliminated, radar image display is more clear and definite, noise can be suppressed effectively, a displayed object is more mellow and full, source data with higher quality are provided for post-processing, and the post-processing performance is finally enhanced. The method comprises the following specific steps of:parameter initializing, quick time accuracy, CFAR processing, slow time accumulation, binaryzation, corroding and expanding.

Description

Technical field [0001] The invention belongs to the technical field of marine radar, and particularly relates to an image enhancement method therein. Background technique [0002] Marine radar is one of the indispensable navigation equipment for ships, but the detection and tracking performance of marine radar is often affected by electromagnetic waves scattered on the surface of ocean waves (ie, sea clutter) and various noises. In addition to noise interference, the segmented image In addition to the required targets, there are some isolated points, isolated small areas, small gaps and holes. The marine radar display needs to highlight the existence of objects in the sea to remind the manipulator to avoid, and these points and areas exist for future target location judgments. Interference, resulting in subsequent tracking loss or tracking errors, so the marine radar image data needs to be enhanced. At present, there is no better way to solve these problems. Summary of the inve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S7/41
Inventor 段昶姚云萍
Owner 成都成电电子信息技术工程有限公司