Method for searching and positioning moving human object by through-wall detecting radar (TWDR)

A detection radar and wall-penetrating radar technology, which is applied in measuring devices, radio wave measurement systems, radio wave reflection/re-radiation, etc., can solve problems such as not being suitable for portable, increasing difficulty and cost of wall-penetrating radar system design , to achieve the effects of simple method, improved work efficiency and high execution efficiency

Inactive Publication Date: 2010-12-08
WUHAN UNIV
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Problems solved by technology

[0005] So far, in order to better realize the detection, positioning, tracking and imaging of the partition wall of the target, the radar system with three receiving antennas or antenna arrays is used in principle, and the synthetic aperture radar is mostly used, but this is also difficult for hardware and software. Two aspects increase the difficulty and cost of the design of the through-wall detection radar system, and it is not suitable for portable requirements

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  • Method for searching and positioning moving human object by through-wall detecting radar (TWDR)
  • Method for searching and positioning moving human object by through-wall detecting radar (TWDR)
  • Method for searching and positioning moving human object by through-wall detecting radar (TWDR)

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Embodiment Construction

[0024] 1. Theoretical basis

[0025] as attached figure 1As shown, the multi-purpose antenna array is used when the impact type penetrating wall detection radar detects. The present invention adopts a single-transmit and double-receive antenna system. T / R is an integrated antenna for transmitting and receiving (i.e. transmitting / receiving antenna), R is a receiving antenna, and S is a human body target , the one-dimensional echo signal of the through-wall radar collected by the antennas T / R and R is sent to the computer for processing. θ R , θ T are the pointing angles of the transmit beam and the receive beam, respectively, R T is the distance from the transceiver integrated antenna T / R to the target S, R R is the distance from the target S to the receiving antenna R. Usually, what is measured at the receiving end is the sum of the distances from the transmitting end to the receiving end after the electromagnetic wave is emitted from the target, namely: R ∑ =R T +R R ...

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Abstract

The invention provides a method for searching and positioning a moving human object through a wall by a through-wall detecting radar (TWDR). On the basis of retaining a single-emitting and double-receiving antenna system, a complex background signal is removed by using a clutter suppression algorithm based on signal correlation, and the moving human object is more rapidly and accurately searched through the wall; and by using a signal strangeness detecting algorithm based on echo signal correlation, the moving object is more rapidly detected, positioned and tracked by utilizing the TWDR. The method of the invention has the advantages of simplicity and high execution efficiency, is suitable for the portable TWDR to search and position the moving human object through the wall and can effectively improve the working efficiency of the TWDR.

Description

technical field [0001] The invention belongs to the technical field of through-wall detection radar, and in particular relates to a new algorithm for searching and locating moving human targets by partition walls. Background technique [0002] Since the 1990s, the research on through-wall detection radar technology began to develop vigorously. After more than ten years of development, a variety of technical means to realize through-wall detection have been studied, and a variety of experimental prototypes have been developed based on these theories, and some products have initially entered the practical stage. This is almost discussed in many technical literature and research papers on through-the-wall detection radar, David.D.Ferris.Jr, Nicholas C.Currie, A survey of current technologies for through-the-wall surveillance(TWS), Part of the SPIE conference on sensors, C 3 I, information, and training technologies for law enforcement, Boston, Massachusetts, SPIE, Vol.3577, 1...

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Application Information

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IPC IPC(8): G01S13/06G01S7/41
Inventor 陈小莉田茂郭静
Owner WUHAN UNIV
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