Multi-life-body intelligent detection device and method based on CPPWM-MIMO radar

A technology of intelligent detection and living body, applied in the direction of measurement device, electromagnetic wave detection, radio wave measurement system, etc., can solve the problem of high false alarm rate and missed alarm rate, and achieve enhanced robustness, intelligent detection, type and breathing Frequency efficient effect

Pending Publication Date: 2021-10-29
TAIYUAN UNIV OF TECH
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  • Application Information

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Problems solved by technology

[0005] In order to solve the problem of the high false alarm rate and missing alarm rate of the existing life detection radar in the post-disaster low signal-to-noise ratio environment when searching for multi-living bodies, the present invention proposes a multi-living body intelligence system based on CPPWM-MIMO radar. Detection device and method

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Embodiment 1

[0082] Such as figure 1 As shown, Embodiment 1 of the present invention provides a multi-living body intelligent detection device based on CPPWM-MIMO radar, which is characterized in that it includes a CPPWM signal generator 1, multiple power amplifiers 2, Vivaldi linear sparse array antenna 3, multiple Low-noise amplifier 4, multi-channel high-speed hybrid sampler 5 and data processing system; the CPPWM signal generator 1 generates orthogonal multi-channel CPPWM detection signals and simultaneously by setting the initial values ​​of different Logistic mapping units and Tent mapping units One-to-one correspondence with multiple CPPWM reference signals. Orthogonal multi-channel CPPWM signals do not interfere with each other and do not affect each other. Each CPPWM detection signal is connected to a signal input end of a power amplifier 2 respectively, and each CPPWM reference signal is connected to a signal input end of a multi-channel high-speed hybrid sampler 5 respectively;...

Embodiment 2

[0093] Such as Figure 5 As shown, Embodiment 2 of the present invention provides a multi-living body intelligent detection method based on CPPWM-MIMO radar, based on figure 1 The shown a kind of device realizes, comprises the following steps:

[0094] S1. Chaotic correlation filtering and ranging: pairwise cross-correlation calculations are performed on each CPPWM echo signal and each CPPWM reference signal to obtain each cross-correlation curve, and matching filtering and ranging calculations are performed.

[0095] Taking the Vivaldi linear sparse array antenna 3 including six transmitting antennas 31 in the middle and three receiving antennas 32 on both sides as an example, pairwise cross-correlation is performed on the 6 CPPWM echo signals and the 6 CPPWM reference signals 36 (6×6) cross-correlation curves are calculated to realize matched filtering and distance estimation.

[0096] S2. Process the cross-correlation curve to obtain the life body information, and calcula...

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Abstract

The invention belongs to the field of disaster detection, and discloses a Multi-life-body intelligent detection device and method based on a CPPWM-MIMO radar. The device comprises a CPPWM signal generator, a plurality of power amplifiers, an array antenna, a plurality of low-noise amplifiers, a multi-channel high-speed hybrid sampler, and a data processing system, wherein the array antenna comprises a plurality of transmitting antennas and a plurality of receiving antennas, the CPPWM signal generator simultaneously generates multiple paths of orthogonal CPPWM detection signals and multiple paths of CPPWM reference signals corresponding to the CPPWM detection signals, each CPPWM detection signal is connected with a transmitting antenna through the power amplifier, the output end of each receiving antenna is connected with the multi-channel high-speed hybrid sampler through the low-noise amplifier, each CPPWM reference signal is connected with the multi-channel high-speed hybrid sampler, the multi-channel high-speed mixed sampler is connected with the data processing module, and the data processing module is used for calculation and analysis to obtain a life body detection result. The device has the advantages of being not affected by environment temperature, noise, field visibility and external electromagnetic interference and the like.

Description

technical field [0001] The invention belongs to the field of disaster detection, and in particular relates to a multi-living body intelligent detection device and method based on CPPWM-MIMO radar. Background technique [0002] The life detection radar actively emits electromagnetic waves to penetrate obstacles, and by receiving and analyzing the echo reflected by the trapped people, it can identify life signals such as breathing, so as to judge whether there are survivors buried under the ruins. Compared with traditional life detectors based on infrared, audio, sound waves and optical imaging (Sensors and Microsystems, Vol.30, p.8-10, 2011), life detection radar is independent of ambient temperature, noise and field visibility. obvious advantages. [0003] Existing life detection radars mainly include continuous wave Doppler radar (IEEE Trans.Microw.TheoryTechn., Vol.61, p.2046-2060, 2013), linear frequency modulation .62, p.1387-1399, 2014), stepped frequency continuous w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/88G01S13/08G01V3/12
CPCG01S13/88G01S13/08G01V3/12
Inventor 徐航马铖李静霞刘丽王冰洁
Owner TAIYUAN UNIV OF TECH
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