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Multi-target detecting and positioning method based on the perspective radar imaging of buildings

A technology of radar imaging and positioning method, which is applied in the field of building perspective radar, which can solve the problems that the echo amplitude cannot be increased quickly and in real time, and achieve the effects of high target detection probability, good real-time performance, and improved detection rate

Active Publication Date: 2017-02-01
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0004] The purpose of the present invention is: in order to solve the problem that the existing technology cannot quickly and real-time improve the detection rate of targets with low echo amplitudes covered by strong targets in buildings, the present invention proposes a method suitable for building perspective Real-time multi-target detection and positioning method after imaging of radar

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  • Multi-target detecting and positioning method based on the perspective radar imaging of buildings
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  • Multi-target detecting and positioning method based on the perspective radar imaging of buildings

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[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0034] Such as figure 1 As shown, it is a schematic flowchart of the multi-target detection and positioning method based on building perspective radar imaging of the present invention. A multi-target detection and positioning method based on building perspective radar imaging, comprising the following steps:

[0035] A. Use the building perspective radar to detect and locate the multi-moving target behind the wall of the area to be detected through the multi-transmit and multi-receive array, and obtain the focusing delay compensation value of each antenna according to the wall thickness, dielectri...

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Abstract

The invention discloses a multi-target detecting and positioning method based on the perspective radar imaging of buildings. The method comprises the following steps: performing backward projection imaging; superimposing binarized images; strengthening the targets; obtaining the image matrix accumulation vectors; extracting the positions of the targets and normalizing a target region. According to the invention, a backward projection imaging method is used to speed up the imaging in a to-be-detected area; and through the superposing of binarized images and the strengthening of objects, the continuous inter-frame target association after the non-connected area detection imaging can be realized so as to increase the target amplitude for afterward detections. Through the obtaining of the image matrix cumulative vectors, the extracting of target matching and the normalizing of the target region, the image direction based multi-target enhanced detection is realized, which effectively enhances the targets with low echo amplitude due to the covering of strong targets. Therefore, detection efficiency for weak targets is increased. With good practicability and good detection efficiency, the method of the invention can be of highly significance in the technical field of perspective radar imaging of buildings.

Description

technical field [0001] The invention belongs to the technical field of building perspective radar, in particular to a multi-target detection and positioning method based on building perspective radar imaging. Background technique [0002] Building perspective radar obtains relevant information of the area of ​​interest by analyzing the echo data of targets such as human bodies behind buildings obtained from the transceiver device, so as to realize the detection and positioning of moving human targets in closed buildings. In recent years, it has been used in street fighting, Anti-terrorism, disaster rescue, security inspection and other fields have been more and more widely used. When there are multiple targets in a single area in the scene to be tested, differences in the target amplitudes often appear in the image due to the differences in motion states and echo intensities among the targets. In view of this situation, if ordinary threshold detection is used, it will be di...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/88G01S13/89
CPCG01S13/888G01S13/89
Inventor 崔国龙刘健强胡露郭世盛黄鑫杨晓波孔令讲易伟
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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