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Weather radar electromagnetic interference echo identification method based on support vector machine

A support vector machine and electromagnetic interference technology, applied in character and pattern recognition, computer parts, instruments, etc., can solve problems such as inability to identify, achieve the effect of ensuring accuracy and simple algorithm principle

Inactive Publication Date: 2018-02-09
TIANJIN UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is only suitable for identifying radial electromagnetic interference echoes, and can only identify narrow electromagnetic interference echoes with less than 5 radial directions. Radial electromagnetic interference echoes beyond this range cannot be identified by this method.

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  • Weather radar electromagnetic interference echo identification method based on support vector machine
  • Weather radar electromagnetic interference echo identification method based on support vector machine
  • Weather radar electromagnetic interference echo identification method based on support vector machine

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Experimental program
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Embodiment Construction

[0036] The weather radar electromagnetic interference echo identification method of the present invention specifically comprises the following steps:

[0037] Step 1. Establish a training sample set.

[0038] The positive sample set (positive sample) is the radial electromagnetic interference echo image, and the negative sample set (negative sample) is the spiral electromagnetic interference echo and pitted electromagnetic interference echo image.

[0039] Step 2. Load positive and negative samples and assign labels.

[0040] Step 3. Extract positive and negative sample features.

[0041] Read in the positive sample image, convert the color image to a grayscale image, and then extract its HOG features; read in the negative sample image, convert the color image to a grayscale image, and then extract its HOG features.

[0042] Step 4, train the SVM classifier, and generate the SVM classifier corresponding to the training sample data.

[0043] Step 5. Save the classifier.

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Abstract

The invention relates to the image information processing technology. In the invention, different characteristics of three kinds of electromagnetic interference echoes and superiority of a SVM methodare fully used, the three kinds of electromagnetic interference echoes can be simultaneously identified, and accuracy of electromagnetic interference echo identification is increased. A weather radarelectromagnetic interference echo identification method based on a support vector machine comprises the following steps of step1, establishing a training sample set; step 2, loading positive and negative samples and distributing labels; step3, extracting positive and negative sample characteristics; step4, training a SVM classifier and generating the SVM classifier corresponding to training sampledata; step5, preserving the classifier; step6, detecting accuracy of classifier classification; step7, loading a test image; step8, extracting a test image characteristic; step9, using the trained SVM classifier to classify the test image; and step10, realizing identification of a spiral electromagnetic interference echo and a pitting electromagnetic interference echo. The method is mainly applied to the image information processing occasion.

Description

technical field [0001] The invention relates to the technical field of image information processing, in particular to a support vector machine-based identification method for electromagnetic interference echoes of weather radars. Background technique [0002] Weather radar echoes are divided into meteorological echoes and non-meteorological echoes, and non-meteorological echoes will interfere with the identification of meteorological echoes. Non-meteorological echoes are mainly divided into surface object echoes, biological echoes, electromagnetic interference echoes and abnormal radar fault echoes. Among them, the electromagnetic interference echo refers to the interference echo phenomenon that occurs when the radar echo is interfered by external equipment with the same frequency or adjacent frequency. These interference echoes can be divided into three categories, namely, radial interference echo and spiral interference echo. Waves and pitted interference echoes. For sho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/62
CPCG06F2218/12G06F18/2411G06F18/214
Inventor 唐晨陈明明李碧原徐文君
Owner TIANJIN UNIV