Method and system for detecting moving and static targets based on multifunctional ultra-wideband through-wall radar

Abstract

The invention discloses a moving and static target detection method and system based on multifunctional ultra-wideband through-wall radar. The method includes the following steps: determining the target detection mode of through-wall radar; collecting M*N groups of signals of a receiver, wherein M is the effective pulse length and represents range data, and N the number of pulse groups and represents velocity data, M>N when the target detection mode of the through-wall radar is a moving target detection mode, and M=N when the target detection mode of the through-wall radar is a static target detection mode; carrying out range Fourier transformation on the M*N groups of data to get 2k*N frequency domain data, wherein the number of points of Fourier transformation is 2k, and 2k>M; carrying out velocity Fourier transformation on the range Fourier transformation results of the M*N groups of data to get 2k*N frequency domain data, wherein the number of points of Fourier transformation is N;intercepting data of effective range in the 2k*N frequency domain data, and accumulating the intercepted data by Doppler; and detecting a target based on the accumulation result, and calculating thelocation coordinates of the target.

Description

technical field [0001] The invention belongs to the field of radar detection, and in particular relates to a method and system for detecting moving and static targets based on a multifunctional ultra-wideband through-wall radar. Background technique [0002] Ultra-wideband penetrating wall radar is a new type of technical equipment, which can detect targets obscured by obstacles. [0003] At present, foreign countries have been successfully developed and put into practical application. The Xaver 800 / 400 of Camero Company of Israel, the PRISM 200 of Cambridge Consultants Company of the United Kingdom, and the RadarVision2 of Time domain Company of the United States have been reported. They have all achieved good imaging effects. Domestic research in this area has just started, mainly based on theoretical research. Although there are also reports on the development of ultra-wideband fast wall-penetrating search and rescue radars, these products have a large gap with foreign pr...

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Problems solved by technology

Domestic research in this area has just started, mainly based on theoretical research. Although there are also reports on the development of ultra-wideband fast wall-penetrating search and rescue radars, these products have a large gap with foreign products in terms of function, performance and portability. gap, it is difficult to meet the actual needs of our country

[0004] In the past two years, there will be nearly a thousand units equipped, and the long-term demand will be more. In addition to the search for personnel in earthquake relief and landslides, the existing wall-penetrating radar devices in China are specially designed for moving targets. For detection and tracking, there are also special ones for static target detection, but few moving and static targets are combined with each other, especially in practical applications, there are very few situations where there are only moving targets or only static targets

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