KR100832466B1 - Passive millimeter wave system and method for detecting concealed objects - Google Patents

Abstract

A concealed object detecting system and a method using passive millimeter waves are provided to increase detection accuracy by approximately scanning an object and to make the structure small by forming a millimeter wave image obtaining device attached with a directional antenna without using a millimeter wave focus lens. A concealed object detecting system using passive millimeter waves comprises a millimeter wave concealed object sensing unit(100) and image output devices(22,23). The millimeter wave concealed object sensing unit has a millimeter wave passive image sensor module(10) straightly arranged at a portable body and an acceleration sensor(16) outputting information about the moving position and moving time of the body used as tuning information of an image signal in forming a millimeter wave image, by measuring acceleration in moving the body. The millimeter wave concealed object sensing unit reconstructs the millimeter wave image obtained by the millimeter wave passive image sensor module on the basis of information about the moving position and moving time of the body. And, the sensing unit obtains the millimeter wave image by equally splitting the object regardless of the scanning speed of a researcher. The image output devices receive the image signal obtained by the millimeter wave concealed object sensing unit by wireless and display the received image signal.

Description

Passive millimeter wave system and method for detecting concealed objects

1 is a block diagram of a passive millimeter wave hidden object detection apparatus according to the present invention

2 is a block diagram of a millimeter wave passive image sensor module of a standard antenna type according to the present invention;

3 is a block diagram of a millimeter wave passive image sensor module in the form of a casein grain antenna according to the present invention;

Figures 4a and 4b is a carrier configuration for implementing a passive millimeter wave hidden object detection apparatus according to the present invention

5a to 5c is a block diagram showing the assembly structure of the passive millimeter wave hidden object detection apparatus according to the present invention

6A and 6B are structural diagrams showing a transition structure of a passive millimeter wave hidden object detecting apparatus according to the present invention.

7A and 7B are LNA configuration diagrams of a passive millimeter wave hidden object detecting apparatus according to the present invention.

8 is a circuit diagram of a detector of a passive millimeter wave hidden object detecting apparatus according to the present invention.

9A is a diagram illustrating a configuration of image signal processing according to a manual millimeter wave hidden object detection method according to the present invention.

9B is a flowchart illustrating a signal processing procedure according to a manual millimeter wave hidden object detection method according to the present invention.

10 is a block diagram of a portable passive millimeter wave hidden object detecting apparatus according to the present invention.

Explanation of symbols for the main parts of the drawings

100. Portable millimeter wave hidden object detector 200. Image signal processor

10. Millimeter-wave Passive Image Sensor Module 11. Amplifier

12. A / D converter 13. Microcontroller

14. Wireless Transmission Module 15. Power Supply

16. Acceleration Sensor 21. Wireless Receive Module

22. First Video Output Device 23. Second Video Output Device

The present invention relates to a portable hidden object detection device, specifically, a manual millimeter to manually detect the millimeter wave emitted from the human body and each object to form an image so that the hidden object can be found without affecting the human body at all. A method and method for detecting hidden objects.

In general, airports and various conference halls install metal detectors to detect metallic substances such as firearms and prohibit the introduction of dangerous materials. The metal detectors use electromagnetic induction to change the properties depending on the presence or absence of metallic substances. It is used to detect firearms or other metallic dangerous objects.

The metal detector includes a portable metal detector that a safety officer carries and retrieves a person's metals, and a gate type metal detector that detects a metal as the person passes through the gate through a gate structure.

However, such a metal detector has a problem that a desired result may not be obtained by inaccurate detection by nonmetals or external noise.

In addition, a hidden object detection device for an object used in an airport, such as a safety screening, etc. is typically X-ray detector.

However, in the case of the X-ray detector, there is a concern that the human body in the clothes is clearly expressed and there is a fear of infringement on the human rights of the individual, and since the X-ray is injected into the human body at the time of searching, there is a concern that adversely affects the human body.

Another type of hidden object sensing device is a sensing device using a millimeter wave, which uses the following principle.

Every object emits a wide band of thermal noise in proportion to its absolute temperature, and a hidden object detection device using a passive millimeter wave receives the spectral intensity in the millimeter wave band and forms an image.

Here, the millimeter wave refers to a signal whose wavelength is in millimeters. Since the millimeter wave signal can penetrate clothing, etc., a manual millimeter wave imaging system enables the formation of an image by receiving a millimeter wave of thermal noise proportional to the absolute temperature emitted by the human body and belongings inside the garment. Do.

Such a millimeter wave image system of the related art acquires a signal by scanning an image of an object formed through a lens or other method, and configures it into a single image. The development of applied technologies in the private sector is now in its infancy.

In addition, in order to use the millimeter wave detection device for the search for actual safety, a system must be developed in a portable form, but the technology development in the actual circuit configuration and signal detection / processing stage is not made.

The present invention is to solve the problem of the prior art hidden object detection device, to passively detect the human body and the millimeter wave emitted from each object to configure the image to find the hidden object without affecting the human body at all It is an object of the present invention to provide a portable passive millimeter wave concealed object detecting apparatus and method which can be produced.

The present invention manufactures a straight millimeter wave passive image sensor module in which the electronic component parts are integrated in a carrier form in a rod form, and scans a person passing through a search stand by using an acceleration sensor. It is an object of the present invention to provide a portable passive millimeter wave concealed object detecting apparatus and method for obtaining the millimeter wave emitted at regular intervals in the vertical direction.

The present invention manufactures a portable passive millimeter wave concealed object detection device which reconstructs the acquired passive millimeter wave signal and outputs it as a whole image to a small display attached to the system, and wirelessly transmits to another computer using a wireless transmission / reception system installed in the system. Its purpose is to provide a secure environment that enables centralized management of security searches by sending and receiving data.

The passive millimeter wave concealed object detecting apparatus according to the present invention for achieving the above object has a millimeter wave passive image sensor module arranged in a straight line on a portable body, and when measuring the acceleration of the movement of the body to form a millimeter wave image An acceleration sensor for outputting information on the movement position and time of the main body for use as the tuning information of the image signal, and through the millimeter wave passive image sensor module based on the information about the movement position and the movement time of the main body A millimeter wave concealed object detector configured to control the obtained millimeter wave image to be reconstructed, to obtain a millimeter wave image by uniformly dividing a search object regardless of a searcher's scan speed;
And image output devices configured to wirelessly receive and display an image signal acquired by the millimeter wave hidden object detector.

Manual millimeter wave concealed object detection apparatus according to the present invention for achieving another object is a millimeter wave passive image to be obtained by dividing the search range uniformly to the millimeter wave emitted from the search target according to the scanning operation of the searcher Sensor module; Acceleration that detects the movement of the millimeter wave passive image sensor module during scanning by the searcher and outputs information about the movement position and time of the body for use as the tuning information of the image signal when composing the millimeter wave image A millimeter-wave image obtained through the millimeter-wave passive image sensor module is reconstructed based on the information about the movement position and the movement time of the acceleration sensor to uniformly divide the search target regardless of the scan speed of the searcher. To control the acquisition of millimeter-wave images Microcontroller; Wireless transmission module for wireless transmission of the signal processed by the microcontroller; includes, characterized in that they are configured in a portable body.

According to another aspect of the present invention, there is provided a manual millimeter wave hidden object detecting method comprising: scanning a main body including a millimeter wave passive image sensor module in proximity to a search target; a moving position and a moving time of the main body in a proximity scan operation; Acquiring a millimeter wave by uniformly dividing a search target; reconstructing a millimeter wave image obtained based on information about a moving position and a moving time of the main body; And displaying the image on a display screen in real time and wirelessly transmitting the image to an image output device at another location.

Hereinafter, a preferred embodiment of a passive millimeter wave hidden object detecting apparatus and method according to the present invention will be described in detail.

Features and advantages of the passive millimeter wave hidden object sensing apparatus and method according to the present invention will become apparent from the detailed description of each embodiment below.

1 is a block diagram of a passive millimeter wave hidden object detecting apparatus according to the present invention.

2 is a block diagram of a millimeter wave passive image sensor module of a standard antenna type according to the present invention, and FIG. 3 is a block diagram of a millimeter wave passive image sensor module of a casee grain antenna type according to the present invention.

In order to obtain a passive millimeter wave image for retrieving a hidden object, the present invention provides a searcher for a search target by constructing a compact millimeter wave passive image sensor module to be portable and configuring it in a portable body. You can scan in close proximity.

In addition, the main body is configured to acquire an image signal of each divided part by dividing the scanning range by configuring the acceleration sensor evenly according to the manual millimeter wave hidden object detection device, that is, the moving speed of the main body.

In this way, a small portable hidden object detection system is implemented that collects the signals of each divided part of the scanned object and edits and reconstructs it into a whole image to increase the accuracy of the search.

The portable passive millimeter wave imaging system according to the present invention performs a proximity scan on an object to acquire an image, so that each independently operated millimeter wave passive image sensor module including an antenna is provided without a device for focusing a millimeter wave such as a lens. Consists of a linear arrangement.

In addition, in order to realize the miniaturization of the system, the digital signal processing processor reconstructs the signal from each carrier type module by integrating the amplifier elements for amplification and the elements of the detector part for converting the amplified power into voltage in a carrier type. A portable real-time passive millimeter wave imaging system is implemented.

The passive millimeter wave hidden object detecting apparatus according to the present invention is largely composed of a portable millimeter wave hidden object detecting unit 100 and an image signal processing unit 200 for processing and outputting the acquired image.

The portable millimeter wave concealed object detector 100 is arranged in a row and has a millimeter wave passive image sensor module 10 which obtains the millimeter wave emitted from the search object by dividing the search range evenly according to the scan of the searcher, and the millimeter. An amplifying unit 11 for amplifying the DC voltage output from the wave passive image sensor module 10, an A / D converter 12 for converting the amplified DC voltage into a digital signal, and a portable millimeter wave hidden object detector A portable millimeter wave configured in the interior of 100 and used for tuning information of a video signal when measuring the acceleration of the portable millimeter wave concealed object detecting unit 100 at the time of scanning by a searcher to construct a millimeter wave image. An acceleration sensor 16 for outputting information about a moving position and time of the hidden object detecting unit 100, and a portable millimeter wave concealment output from the acceleration sensor 16; A microcontroller 13 configured to control the reconstruction of the millimeter-wave image obtained through the millimeter-wave passive image sensor module 10 based on the information about the movement position and the movement time of the sieve detection unit 100, and a main body configured to be portable. LCD liquid crystal display (not shown) for displaying the image acquired by the millimeter wave hidden object detection unit 100, the wireless transmission module 14 for wirelessly transmitting the data processed by the microcontroller 13 and the like And a power supply unit 15 for supplying power during operation for image acquisition.

Here, the power supply unit 15 can be charged as a part for supplying power to the portable millimeter wave hidden object sensing device, and uses a lithium-polymer battery for light weight and miniaturization.

The appearance of the portable millimeter wave hidden object detecting unit 100 is configured as shown in FIG. 10.

In addition, the image signal processing unit 200 is a wireless receiving module 21 for receiving data transmitted from the wireless transmission module 14 of the portable millimeter wave concealed object detecting unit 100 and processes the received data to form an image. It consists of 1, 2 image output devices 22 and 23.

Here, the first and second image output devices 22 and 23 are configured as a portable terminal such as a computer or a PDA.

As described above, the portable millimeter wave hidden object detecting apparatus according to the present invention configures an image by processing a signal detected by the millimeter wave passive image sensor module 10 and a signal detected by the acceleration sensor 16 by the microcontroller 13. The millimeter wave passive image is displayed on the LCD liquid crystal screen configured in the main body, or transmitted to the first and second image output devices 22 and 23 configured as a portable terminal such as a computer or a PDA through a wireless transmission module.

The wireless transmission and reception module transmits and receives data obtained from the monitoring apparatus using a frequency of an ISM band.

The millimeter wave passive image sensor module has the following configuration.

First, as shown in FIG. 2 showing the configuration of a millimeter wave passive image sensor module in the form of a standard antenna according to the present invention, a standard antenna 25 for receiving a millimeter wave signal emitted from a search object and the antenna 25 A low noise amplifier (LNA) 26 for amplifying a signal received through a predetermined level and a detector 27 for detecting a signal amplified by the low noise amplifier 26 to be converted into a direct current (DC) voltage. It consists of.

And as shown in Figure 3 showing the configuration of the casein antenna of the casein-grain antenna according to the present invention, the caseingrain antenna 28 for receiving a millimeter wave signal parallel to the antenna aperture surface emitted from the search object, and A low noise amplifier 29 for amplifying the signal received through the casein antenna 28 to a predetermined level, and a detector 30 for detecting the signal amplified by the low noise amplifier 29 to be converted into a direct current (DC) voltage. It is composed.

The caseegrain antenna 28 described above is a combination of two reflectors (main reflector and sub-reflector) as well known and receives a millimeter wave signal parallel to the antenna aperture.

The portable millimeter wave concealed object detecting apparatus according to the present invention attaches the millimeter image sensor module 10 to the bar structure in a row, and acquires the millimeter wave emitted while scanning from the top to the bottom of the person to be searched. .

Acceleration sensor 16 is attached to calculate the position and time the sensing device moves, and the obtained millimeter wave signal is implemented on a small display mounted on the portable device itself, and wirelessly transmits data to a portable terminal such as a computer or PDA. It can be linked and operated with the central security management system.

The configuration of the millimeter wave passive image sensor module of the passive millimeter wave hidden object sensing apparatus according to the present invention described above will be described in detail.

Figures 4a and 4b is a carrier configuration for implementing a passive millimeter wave hidden object detection apparatus according to the present invention, Figures 5a to 5c is a block diagram showing the assembly structure of the passive millimeter wave hidden object detection apparatus according to the present invention to be.

6A and 6B are diagrams illustrating the transition structure of the passive millimeter wave hidden object detecting apparatus according to the present invention.

The millimeter wave passive image sensor module used in the passive millimeter wave concealed object detecting apparatus according to the present invention has an image sensor module and a transmitter / receiver except for an antenna as shown in FIGS. 4A and 4B to reduce and integrate the size. Implement in a single module of the form.

Here, the substrate to be used in the carrier fabrication is a substrate having a dielectric constant of 2.2 and a loss tangent of 0.0009, and the machining uses a milling machine for PCB fabrication.

Specifically, the carrier to be used for fabrication is made of molybdenum having a size of 298 * 700 mils and 15 mils, as shown in FIG. 4B. The whole millimeter wave passive image sensor module is preferably manufactured in the form of a cascade of unit circuits using such carriers.

The MMIC chip bonding for fabricating such a millimeter wave passive image sensor module is formed by attaching and bonding a MMIC (Monolithic Microwave IC) after a hole is formed in a cavity in a substrate as shown in FIG. 5A.

That is, a cavity-type hole is formed in a duroid substrate stacked on a carrier, and an MMIC including a millimeter wave passive image sensor module is attached to the hole area and bonded to a peripheral circuit.

FIG. 5B shows an enlarged configuration of part (a) of FIG. 5C.

The overall size of the carrier-type millimeter-wave passive image sensor module having such a configuration is about 50 mm x 25 mm, and is composed of a microstrip-waveguide transition structure using a probe connected to an antenna, an LNA, and a detector.

It is a structure that blocks the moisture and protects the probe by allowing the dielectric to penetrate into the waveguide so as to block moisture.

At this time, the resonance caused by the discontinuity of the waveguide is removed by using sufficient Via.

The transition structure designed in the present invention is the same as in Figs. 6a and 6b and the insertion loss of 0.8 ㏈ and the return loss of 15 ㏈ or more in 30 to 40 ㎓ band is obtained. In the case of the single transition structure, the loss of the transmission line is less than 0.3 ㏈.

And LNA configuration of the passive millimeter wave hidden object detection apparatus according to the present invention is as follows.

7A and 7B are LNA configuration diagrams of a passive millimeter wave hidden object sensing apparatus according to the present invention, and FIG. 8 is a circuit diagram of a detector of a passive millimeter wave hidden object sensing apparatus according to the present invention.

In the present invention, LNA is composed of a device usable in the 20-40 kHz band, the LNA configuration according to the present invention is as shown in Figure 7b.

Oscillations that can be caused by high gains are eliminated by inserting an attenuator between the amplifiers or by attaching an absorber to the outer housing.

The detector of the passive millimeter wave hidden object detecting apparatus according to the present invention uses a zero-bias Schottky diode and operates in a linear region when the input signal is a small signal. The configuration of the circuit of the detector is as in FIG.

Hereinafter, an image signal processing process according to the manual millimeter wave hidden object detection method according to the present invention will be described in detail.

9A is a block diagram illustrating an image signal processing method according to the manual millimeter wave hidden object detection method according to the present invention, and FIG. 9B is a flowchart illustrating a signal processing process according to the manual millimeter wave hidden object detection method according to the present invention.

Portable manual millimeter wave concealed object detection method according to the present invention is to scan through a general probing search method that scans a person who concealed plastic explosives or drugs, as well as metal weapons such as guns or knives in the clothing as close as wearing clothes Each object senses the millimeter wave and constructs an image.

In addition, a display device can be configured on a portable device to enhance the accuracy of the search by scanning the manual millimeter wave image while the searcher directly checks it, and attaches a wireless transmission / reception system to transmit data to a computer at another location for secure search. It allows central management of the system.

First, a main body including a millimeter wave passive image sensor module is scanned in a state where a person who is suspected of concealing a plastic explosive or a drug, as well as a metal weapon such as a gun or a knife, is in a state of wearing clothes. (S901)

During the proximity scan operation, the acceleration sensor provided in the main body acquires information about the moving position and the moving time of the main body (S902), and the millimeter wave passive image sensor module searches using the information regarding the moving position and the moving time of the main body. The object is uniformly divided to obtain millimeter waves. (S903)

Here, the acceleration sensor measures the acceleration generated by the monitoring device when the monitoring device is moved to search, and stores information about the moving position and time of the monitoring device and uses it as the synchronization information of the video signal when composing the image. .

The millimeter wave signal obtained from the millimeter wave passive image sensor module is amplified by an amplifier composed of OP-Amp, and converts the DC voltage amplified by the A / D converter into a digital signal and outputs it to the microcontroller.

The microcontroller for signal processing reconstructs the millimeter wave image obtained through the millimeter wave passive image sensor module based on the information about the movement position and the movement time of the main body obtained by the acceleration sensor.

Reconstruction of millimeter-wave images involves realization of the entire image through acquisition of a partial image of the object and synthesis of the partial image.

The reconstructed image is displayed on a display screen configured in real time in real time and is wirelessly transmitted to an image output device at another location (S905).

The video output device at another location displays the wirelessly received video signal in real time (S906), and interlocks with the central security management system to edit, analyze, and store the corresponding video (S907).

Such a portable millimeter wave hidden object detection device, a hidden object detection method using the same, and a signal processing process according to the present invention simplify the linear image sensor module without the need for a device such as a lens that focuses the millimeter wave while scanning a search target in close proximity. Can be used to create real-time passive millimeter wave images.

The passive millimeter wave concealed object detecting apparatus and method according to the present invention described above provides a millimeter wave imaging system capable of acquiring a signal of a specific part of an object by attaching a directional antenna to the millimeter wave passive image sensor module.

In addition, it is possible to implement the whole image by acquiring a partial image of an object and synthesizing the partial image, which is differentiated from the scanning millimeter wave imaging system for implementing a millimeter wave image.

Therefore, the portable real-time manual millimeter wave imaging system according to the present invention can be used as a safety search system for checking dangerous goods such as a pistol at an airport, an intrusion detection system in a building, a non-contact card system, and an internal navigation system in a fire. Since the millimeter wave is less attenuated by fog or water vapor, it can be used as a radar for checking the front of a car and positioning system when the fog occurs.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the embodiments, but should be defined by the claims.

As described above, the passive millimeter wave hidden object detecting apparatus and method according to the present invention have the following effects.

First, the accuracy of the search can be improved by making a manual millimeter wave concealed object detecting device portable and scanning the search object closely.

Second, by making the passive millimeter wave hidden object detection device portable, proximity scan is possible, so that the millimeter wave image acquisition device with a directional antenna is implemented without using the millimeter wave focusing lens, thereby miniaturizing the device.

Third, the millimeter wave image is suitable only for the detection of hidden objects, so there is no controversy about human rights infringement.

Fourth, by attaching a wireless transmission and reception system can transmit data to a computer at another location has the effect of enabling the central management of the security screening system.

Fifth, since the whole image can be realized by acquiring the partial image of the object and synthesizing the partial image, the millimeter wave imaging system can be implemented with a simple structure.

Sixth, it is possible to miniaturize the system by manufacturing the components and elements of the receiving unit in a carrier type, and to lower the production cost of the expensive millimeter wave imaging system by using commercially available components.

Claims (15)

In the hidden object detection apparatus using a millimeter wave, The millimeter-wave passive image sensor module is arranged in a straight line on the portable body, and the movement position and time of the body to be used as the synchronization information of the image signal when composing the millimeter-wave image by measuring the acceleration during movement of the body It includes an output acceleration sensor, and controls to reconstruct the millimeter wave image obtained through the millimeter wave passive image sensor module based on the information about the movement position and the movement time of the main body, irrespective of the scan speed of the searcher A millimeter wave concealed object detector which uniformly divides a millimeter wave image to obtain a millimeter wave image; Passive millimeter wave hidden object detection apparatus comprising a; video output devices for wirelessly receiving and displaying the image signal obtained by the millimeter wave hidden object detection unit. In the hidden object detection apparatus using a millimeter wave, A millimeter wave passive image sensor module configured to be arranged in a row to obtain a millimeter wave emitted from a search target by uniformly dividing a search range according to a scan operation of a searcher; An acceleration sensor for detecting movement of the millimeter wave passive image sensor module during scanning by the searcher and outputting information about the movement position and time of the main body for use as tuning information of the image signal when composing the millimeter wave image; The millimeter wave image obtained through the millimeter wave passive image sensor module is controlled to be reconstructed based on the information about the movement position and the movement time of the acceleration sensor. A microcontroller for controlling to acquire an image; And a wireless transmission module for wirelessly transmitting the signal processed by the microcontroller, wherein they are configured in a portable body. The apparatus of claim 1 or 2, wherein the main body further includes display means for displaying the acquired image, so that a searcher confirms the acquired image simultaneously with a scan for searching. The apparatus of claim 1 or 2, wherein the main body further includes an amplifier for amplifying the DC voltage from the millimeter wave passive image sensor module, and an A / D converter for converting the amplified DC voltage into a digital signal and outputting the digital signal to the microcontroller. Manual millimeter wave concealed object detection apparatus characterized in that it is included. The wireless receiving module of claim 2, further comprising: a wireless receiving module for receiving a signal transmitted by the wireless transmitting module; Image output devices for processing and displaying the signal received by the wireless receiving module is provided, Passive millimeter wave hidden object detection apparatus characterized by performing the search, correction, and storage of the hidden object search and acquisition images by other searchers. The method of claim 2, wherein the millimeter wave passive image sensor module, A standard antenna for receiving a millimeter wave signal emitted from a search target, A low noise amplifier for amplifying a signal received through the antenna to a predetermined level; And a detector for detecting a signal amplified by the low noise amplifier to convert into a direct current (DC) voltage. The method of claim 2, wherein the millimeter wave passive image sensor module, A casee grain antenna receiving a millimeter wave signal parallel to the antenna aperture emitted from the search object; A low noise amplifier for amplifying a signal received through the casein grain antenna to a predetermined level; And a detector for detecting a signal amplified by the low noise amplifier to convert into a direct current (DC) voltage. The method of claim 2, wherein the millimeter wave passive image sensor module, Passive millimeter wave hidden object detection device, characterized in that the image sensor module and the transceiver unit excluding the antenna is composed of a single module of the carrier (carrier) type. The method of claim 2, wherein the millimeter wave passive image sensor module, A passive millimeter wave concealed object comprising a cavity having a cavity in a duroid substrate stacked on a carrier, and having a MMIC having a millimeter wave passive image sensor module attached to the hole area and bonded to a peripheral circuit. Sensing device. 10. The system of claim 9, wherein the millimeter wave passive image sensor module comprises a microstrip waveguide transition structure using a probe, a low noise amplifier, a detector, Passive millimeter wave hidden object detection apparatus characterized in that the form is connected to the transition structure antenna. 12. The passive millimeter wave hidden object sensing device according to claim 10, wherein oscillation that may occur due to a high gain in a low noise amplifier is suppressed by inserting an attenuator between the amplifiers or attaching an absorber to the outer housing. 11. The passive millimeter wave hidden object sensing device of claim 10, wherein the detector is a zero bias Schottky diode operating in a linear region when the input signal is a small signal. Scanning a body including a millimeter wave passive image sensor module in proximity to a search target; Acquiring information about a moving position and a moving time of the main body in a proximity scan operation; Obtaining a millimeter wave by dividing the search object uniformly; Reconstructing the millimeter wave image obtained based on the information about the movement position and the movement time of the main body; And displaying the reconstructed image on a display screen of the main body in real time and wirelessly transmitting the image to an image output device at another position. 15. The method of claim 13, wherein the video output device at another location receiving the wirelessly transmitted video signal displays the video in real time, and edits, analyzes and stores the video in association with a central security management system. Millimeter wave hidden object detection method. 15. The method of claim 13, wherein the reconstruction of the millimeter wave image comprises realization of a whole image by acquiring a partial image of an object and synthesizing the partial image.

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