Intelligent SAR radar air flight target recognition system

A flying target and recognition system technology, applied in the field of intelligent SAR radar air flight target recognition system, can solve the problems of insufficient research and poor model effect

Inactive Publication Date: 2018-09-28
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the detection of flying targets based on SAR images has been widely studied, but the classification and recognition of flying targets has just started due to the limitation of the resolution of SAR images, and some existing research results are not thorough enough, so the effect of the model is not very good.

Method used

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  • Intelligent SAR radar air flight target recognition system
  • Intelligent SAR radar air flight target recognition system
  • Intelligent SAR radar air flight target recognition system

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Experimental program
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Embodiment

[0087] refer to figure 1 , figure 2 , an intelligent SAR radar aerial target recognition system, comprising a SAR radar 1, a database 2 and a host computer 3, the SAR radar 1, the database 2 and the host computer 3 are connected in sequence, the SAR radar 1 irradiates the monitored air, and The SAR radar image is stored in the database 2, and the upper computer 3 includes:

[0088] Image preprocessing module 4, in order to carry out SAR radar image data preprocessing, adopts following process to finish:

[0089] 1) The gray level of the SAR image transmitted from the database is L, f(x 0 ,y 0 ) is the pixel point (x 0 ,y 0 ), the gray value at g(x 0 ,y 0 ) is the pixel point (x 0 ,y 0 ), the average value of pixels in the N×N neighborhood of ), where x 0 ,y 0 respectively represent the abscissa and ordinate of the pixel;

[0090] 2) By calculating the number of pixels h(m,n) satisfying f=m and g=n, the two-dimensional joint probability density p is obtained mn : ...

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Abstract

The invention discloses an intelligent SAR radar air flight target recognition system, comprising an SAR radar, a database and an upper computer, wherein the SAR radar, the database and the upper computer are sequentially connected, the SAR radar performs real-time monitoring in the air and stores image data obtained by the SAR radar in the database, and the upper computer comprises an image preprocessing module, a feature extraction module, a feature selection module, a classifier training module, an intelligent optimization module and a result display module. The invention provides an air flight target recognition system which realizes on-line recognition and has high accuracy.

Description

technical field [0001] The invention relates to the field of radar data processing, in particular to an intelligent SAR radar aerial target recognition system. Background technique [0002] The role of modern radar is to obtain target position and movement data through detection, and physical feature data such as the shape and size of the target can only be obtained through feature recognition, imaging recognition or classification recognition. Passive radar can obtain the electromagnetic radiation signal of the target to realize the determination, tracking and identification of the target position, which can make up for the errors in conventional radar identification models and the number of aircraft. Foreign research on target recognition has formed a set of mature theories, including theory, software and hardware research, and produced a number of very classic recognition systems. At present, the main research objects of various countries are passive radar identification...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/34G06T7/60G06T7/62
CPCG06T7/60G06T7/62G06T2207/10044G06V20/13G06V10/267
Inventor 刘兴高吴俊孙元萌
Owner ZHEJIANG UNIV
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