SAR radar aerial flight target recognition system

A flying target and recognition system technology, applied in the field of 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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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

At present, there have been extensive researches on the detection of flying targets based on SAR images, but the classification and recognition of flying targets has just started due to the limitation of the resolution of SAR images. it is good

Method used

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  • SAR radar aerial flight target recognition system
  • SAR radar aerial flight target recognition system
  • SAR radar aerial flight target recognition system

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Experimental program
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Embodiment

[0076] refer to figure 1 , figure 2 , a kind of SAR radar aerial target recognition system, comprises SAR radar 1, database 2 and host computer 3, SAR radar 1, database 2 and host computer 3 are connected successively, and described SAR radar 1 is irradiated to monitored sky, and will The SAR radar image is stored in the database 2, and the upper computer 3 includes:

[0077] Image preprocessing module 4, in order to carry out SAR radar image data preprocessing, adopts following process to finish:

[0078] 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;

[0079] 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 :

[00...

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Abstract

The invention discloses an SAR radar aerial flight target recognition system. The system comprises an SAR radar, a database and a host computer; the SAR radar, the database and the host computer are orderly connected with each other; the SAR radar performs real-time monitoring on the air, and stores image data obtained by the SAR radar into the database; and the host computer comprises an image pre-processing module, a feature extraction module, a feature selection module, a classifier training module and a result display module. The aerial flight target recognition system provided by the invention achieves on-line recognition and is high in accuracy.

Description

technical field [0001] The invention relates to the field of radar data processing, in particular to a SAR radar air flight target recognition system. Background technique [0002] The theory and method of aerial target recognition and positioning can be applied to early warning, precise guidance, command, and dispatching systems. Because of its important practical value, it has become an important research in the military and engineering fields of various countries in the past two decades Content. The research in this direction involves multiple high-tech disciplines such as space technology, sensors and digital image processing technology. Using SAR images to monitor and identify flying targets in the air can obtain important information parameters such as the type, position, and heading of flying targets by monitoring and identifying flying targets in the SAR images. It plays a vital role in obtaining the initiative of airborne targets and ensuring the success of airborn...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/62G06T7/60
CPCG06T7/60G06T2207/10044G06V20/13G06F18/21322G06F18/214
Inventor 刘兴高吴俊孙元萌
Owner ZHEJIANG UNIV
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