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Intrusion detection device and method based on hybrid CPPWM radar

A detection device and hybrid technology, applied in the field of radar detection, can solve the problems of low positioning accuracy and distance resolution, weak anti-electromagnetic interference, poor concealment, etc., and achieve the effect of strong concealment

Active Publication Date: 2021-10-29
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of poor concealment, susceptibility to environmental temperature, visibility and noisy vibration interference, low positioning accuracy and distance resolution, and weak anti-electromagnetic interference existing in the existing intrusion detection technology, the present invention provides a hybrid CPPWM radar-based An intrusion detection device and method, using a broadband chaotic pulse position-width modulation (CPPWM) signal as a detection signal, and combining the hybrid CPPWM intrusion detection radar technology of a leaky cable guided wave radar and a multiple-input multiple-output (MIMO) radar, to realize a protected area The whole monitoring of the intrusion process, including the intrusion warning of the regional border, the intrusion tracking and the intruder posture recognition in the region, can provide reliable information for important confidential places such as residential quarters, factories, oil depots, banks, airports, nuclear power plants, prisons and military bases. security protection

Method used

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  • Intrusion detection device and method based on hybrid CPPWM radar
  • Intrusion detection device and method based on hybrid CPPWM radar

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Embodiment 1

[0070] Such as figure 1 As shown, the embodiment of the present invention provides an intrusion detection device based on a hybrid CPPWM radar, including a leaky cable guided wave radar 1 , a MIMO radar 2 and a central processing system 3 . It uses the leaky cable guided wave radar 1 to realize the intrusion warning at the boundary of the protection area, uses the MIMO radar 2 to realize the location tracking and attitude recognition of the intruder inside the protection area, and uses multiple CPPWM signal generators to generate multiple CPPWM signals that are orthogonal to each other. As the detection signal of leaky cable guided wave radar and MIMO radar.

[0071] Wherein, the leaky cable guided wave radar 1 includes a CPPWM dual-signal generator 1a, a first power amplifier 1b, a transmitting leaky cable 1c, a receiving leaky cable 1d and a first low-noise amplifier 1f; the CPPWM dual-signal generator 1a is used to generate CPPWM reference signal and CPPWM detection signal...

Embodiment 2

[0088] Such as Figure 4 As shown, Embodiment 2 of the present invention provides an intrusion detection method based on a hybrid CPPWM radar, which passes figure 1 The realization of a kind of intrusion detection device based on hybrid CPPWM radar comprises the following steps:

[0089] S1. Chaotic correlation ranging is performed through the leaky cable guided wave radar 1 .

[0090] The reference signals are R pre (t) and R pos (t), the echo signals are E pre (t) and E pos (t), and the correlation curves are C pre (τ pre ) and C pos (τ pos ), the round-trip time of the CPPWM signal between the leaky cable signal input and the intruder is τ pre and τ pos , as shown in the following formula:

[0091]

[0092]

[0093] S2. According to the measurement data of the leaky cable guided wave radar 1, it is judged whether there is an intrusion, and if so, the starting position of the intrusion is calculated, and the MIMO radar is turned on for related distance measu...

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Abstract

The invention belongs to the technical field of radar detection, and provides an intrusion detection device and method based on a hybrid CPPWM radar. The device comprises a leaky cable guided wave radar, an MIMO radar, and a central processing system. According to the invention, a leaky cable guided wave radar is used to realize intrusion early warning of the boundary of a protection area, a multiple-input-multiple-output (MIMO) radar is used to realize positioning tracking and attitude identification of an intruder in the protection area, and a plurality of chaotic pulse position width modulation (CPPWM) signal generators are adopted to generate multiple paths of mutually orthogonal CPPWM signals which are respectively used as detection signals of the leaky cable guided wave radar and the MIMO radar, so that detection of the intruder in the protection area and positioning tracking and posture recognition are realized, and the device has the advantages of being high in concealment and free of interference of environment temperature, visibility and noisy vibration.

Description

technical field [0001] The invention belongs to the technical field of radar detection, and in particular relates to an intrusion detection device and method based on a hybrid CPPWM radar. Background technique [0002] Intrusion detection technology is widely used in the security protection of important confidential places such as banks, airports, prisons and military bases, to ensure personal safety and maintain public property. Existing intrusion detection technologies include lidar (IEEETrans.Instrum.Meas., Vol.62, p.1174-1182, 2013), optical / thermal infrared cameras (Proc.IEEEConf. .209-216,2014), electric fence (Proc.2ndInt.Conf.Telecom.Comm.Eng., p.344-347,2018), vibrating cable sensor (Proc.IEEE 31stAnnu.1997Int.Carnahan Conf.Secur.Technol ., p.25-30, 1997), fiber optic sensors (Photon.Sensors, Vol.5, p.365-375, 2015) and intrusion detection radar. Intrusion detection radar realizes area protection and monitoring by emitting electromagnetic waves into space to form ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/56G01S13/42G01S7/282G01S7/285
CPCG01S13/56G01S13/42G01S7/282G01S7/285Y02D30/70
Inventor 徐航李颖鑫范文龙卫澍恩刘丽李静霞王冰洁
Owner TAIYUAN UNIV OF TECH
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