KR101655026B1 - Apparatus and method for target detection - Google Patents

Apparatus and method for target detection Download PDF

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Publication number
KR101655026B1
KR101655026B1 KR1020150056684A KR20150056684A KR101655026B1 KR 101655026 B1 KR101655026 B1 KR 101655026B1 KR 1020150056684 A KR1020150056684 A KR 1020150056684A KR 20150056684 A KR20150056684 A KR 20150056684A KR 101655026 B1 KR101655026 B1 KR 101655026B1
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South Korea
Prior art keywords
radar signal
target
radar
target detection
reflected
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KR1020150056684A
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Korean (ko)
Inventor
오대건
이종훈
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재단법인대구경북과학기술원
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G01S7/285—Receivers
    • G01S7/292—Extracting wanted echo-signals
    • G01S7/2923—Extracting wanted echo-signals based on data belonging to a number of consecutive radar periods

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

A target detection apparatus and method are disclosed. A method of detecting a target performed by a radar device, the method comprising: outputting a radar signal corresponding to movement of the target according to an arbitrary trajectory; Receiving the radar signal, the radar signal being reflected by the target; And detecting the target based on the relative position on the locus when the radar signal is received.

Description

[0001] APPARATUS AND METHOD FOR TARGET DETECTION [0002]

And more particularly, to an apparatus and method for detecting a target 120 by moving a target detection device including at least one antenna according to an arbitrary locus by a user's operation and outputting and receiving a radar signal.

A RADAR device is a device that outputs a radar signal through a transmitting antenna and receives a radar signal reflected by an object in the area through a receiving antenna to detect the presence of the target and the distance to the target. At this time, the modulating method of the radar signal includes a pulse method, a frequency modulated continuous wave (FMCW) method, and a frequency shift keying (FSK) method.

For example, an FMCW radar apparatus outputs a radar signal modulated according to a frequency modulation continuous wave method to a target unlike a pulse radar apparatus. Accordingly, the FMCW radar device can receive the radar signal reflected by the target and extract the velocity and distance of the target. The FMCW radar device has the advantage that it has a simple structure and a miniaturized size. Accordingly, the FMCW radar apparatus is used for a military small radar apparatus, a radar apparatus for altitude measurement, and a vehicle collision avoidance system.

Generally, in order to generate a high-resolution target detection image using a radar signal, a radar device including a plurality of antennas is used, or a radar signal is output in a corresponding area using a plurality of radar devices including at least one antenna, A method of detecting the target is used. However, if a radar device including a plurality of antennas or a plurality of radar devices including at least one antenna is used, the unit price of the radar device is increased, and it is not easy to make the radar device small. Therefore, there is a demand for a radar device having a performance similar to that of a radar device including a plurality of antennas or a plurality of radar devices including at least one antenna, while using a radar device including at least one antenna.

A radar device including at least one antenna moves according to an arbitrary trajectory by a user's operation and outputs and receives a radar signal so that a radar device including a plurality of antennas and a plurality of radar devices including at least one antenna The present invention provides a target detection apparatus and method having performance similar to that when the apparatus is used.

A method of detecting a target performed by a radar device according to an embodiment of the present invention includes the steps of: outputting a radar signal correspondingly when moving according to an arbitrary trajectory by a user's operation; Receiving the radar signal, the radar signal being reflected by the target; And detecting the target based on the relative position on the locus when the radar signal is received.

The outputting step may output a radar signal for each sampling interval.

The sampling interval may take into account the wavelength of the radar signal output from the radar device.

The radar signal may be modulated by at least one of a Frequency Modulation Continuous Wave method, a Pulse method, and a Frequency Shifting keying method.

The target may be located behind the obstacle present in the direction in which the radar signal is output.

A target detection apparatus according to an embodiment of the present invention includes: a radar signal output unit for outputting a radar signal corresponding to a movement of an arbitrary track by a user's operation; A radar signal receiving unit for receiving the radar signal from which the output radar signal is reflected by the target; And a target detection unit that detects a target based on a relative position on a locus when the radar signal is received.

The radar signal output unit may output a radar signal at a sampling interval.

The sampling interval may take into account the wavelength of the radar signal output from the radar device.

The radar signal may be modulated by at least one of a Frequency Modulation Continuous Wave method, a Pulse method, and a Frequency Shifting keying method.

The target may be located behind the obstacle present in the direction in which the radar signal is output.

According to an embodiment of the present invention, a radar device including at least one antenna moves according to an arbitrary trajectory by a user's operation and outputs and receives a radar signal, so that a radar device including a plurality of antennas outputs a radar signal A target detection apparatus and method having performance similar to that of outputting and receiving and detecting a target.

According to an embodiment of the present invention, a radar device including at least one antenna moves according to an arbitrary trajectory by a user's operation and outputs and receives a radar signal, whereby a plurality of radar devices including at least one antenna A target detection apparatus and method having performance similar to that of outputting and receiving a radar signal to detect a target.

Figure 1 illustrates the relationship between a target detection device and a target according to one embodiment.
FIG. 2 illustrates a target detection apparatus according to an embodiment.
FIG. 3 illustrates an example of transmitting and receiving a radar signal by moving one antenna according to an embodiment.
FIG. 4 is a flowchart illustrating a target detection method performed by the target detection apparatus according to an exemplary embodiment in order.

Figure 1 illustrates the relationship between a target detection device and a target according to one embodiment.

A target detection device 100 portable by a user can output a radar signal toward a region to be detected by the user and detect the target 120 by receiving the radar signal. At this time, the target detection apparatus 100 can move according to an arbitrary trajectory by a user's operation, and can output a radar signal whenever it moves by half the wavelength of the radar signal outputted. Hereinafter, the radar signal outputted from the target detection apparatus 100 is displayed as a radar signal.

The radar signal may be output through an antenna existing in the target detection apparatus 100 and may be transmitted through the obstacle 110 located between the target detection apparatus 100 and the target 120. For example, the obstacle 110 may be a wall of a building. Thus, the target detection apparatus 100 is able to detect the target 120 located behind the wall of the building.

The radar signal output from the target detection apparatus 100 may be modulated by a pulse method, a frequency modulated continuous wave (FMCW) method, a frequency shift keying (FSK) method, or the like. For example, the radar signal may refer to a signal modulated according to a Frequency Modulation Continuous Wave scheme. The frequency-modulated continuous wave scheme may mean a scheme in which a frequency-modulated signal is continuously transmitted. Specifically, the frequency of the radar signal modulated according to the frequency modulated continuous wave system may vary with time. For example, the frequency of the radar signal modulated according to the frequency modulated continuous wave scheme may increase or decrease with time. However, in the present invention, the radar signal is not limited thereto and may include all of the signals that can pass through the obstacle 110.

The target detection apparatus 100 can receive the radar signal whose reflected radar signal is reflected by the obstacle 110 or the target 120. [ The target detection apparatus 100 can receive the reflected radar signal when the radar signal output at a point on the arbitrary locus is reflected by the obstacle 110 or the target 120. [

That is, the target detection apparatus 100 moves according to an arbitrary trajectory by a user's operation, outputs a radar signal at a half distance of the wavelength of the radar signal to be output, and outputs the radar signal by the obstacle 110 or the target 120 And can receive the reflected radar signal.

The target detection apparatus 100 can determine the relative position on the arbitrary locus on which the radar signal is output and the radar signal reflected by the obstacle 110 or the target 120 is received.

The target detection apparatus 100 can detect the target 120 by using the characteristics of the radar signal outputted and received through the target detection apparatus 100 based on the relative position of the target detection apparatus 100. [ At this time, the characteristics of the radar signal output through the target detection device 100, the radar signal reflected by the obstacle 110, and the radar signal reflected by the target 120 may be different from each other. Herein, the characteristics may mean all kinds of characteristics that cause a difference between radar signals. Specifically, the characteristics may include frequency, magnitude, phase, etc. of the radar signal.

For example, the target detection apparatus 100 detects the frequency of the radar signal output through the target detection apparatus 100, the frequency of the radar signal reflected by the obstacle 110, The distance from the target detection apparatus 100 to the obstacle 110 and the target 120 can be determined using the frequency of the radar signal. Since the obstacle 110 is closer to the target detection apparatus 100 than the target 120, the target detection apparatus 100 can detect the target 120 by removing the radar signal having the corresponding frequency at a short distance . A method for detecting the target 120 using different characteristics of the radar signal will be described in detail with reference to FIG.

Accordingly, the target detection apparatus 100 according to the present invention detects and detects a target 120 by outputting and receiving a radar signal every half of a wavelength of a radar signal output from the target detection apparatus 100, thereby using a radar apparatus including a plurality of antennas And may have performance similar to detecting the target 120 by outputting and receiving a radar signal. In addition, the target detection apparatus 100 according to the present invention detects and detects a target 120 by outputting and receiving a radar signal every half of a wavelength of a radar signal output from the target detection apparatus 100, May have performance similar to detecting the target 120 by outputting and receiving a radar signal using the apparatus.

FIG. 2 illustrates a target detection apparatus according to an embodiment.

The target detection apparatus 100 that can be carried by a user may be configured with a radar signal output unit 210, a radar signal receiving unit 220, a positional position sensor 230, and a target detection unit 240.

The radar signal output unit 210 may output a radar signal toward a direction in which an area desired to be detected by the user exists. At this time, the radar signal output unit 210 can output a radar signal corresponding to an arbitrary locus moving by a user's operation. In addition, the radar signal output unit 210 can output a radar signal whenever it moves by half the wavelength of the output radar signal.

The radar signal may be output through an antenna present in the target detection apparatus 100 and may be reflected by the obstacle 110 located between the target detection apparatus 100 and the target 120 or may be reflected by the obstacle 110 Can be transmitted. For example, the obstacle 110 may be a wall of a building. Thus, the target detection apparatus 100 is able to detect the target 120 located behind the wall of the building.

The radar signal may be modulated by a pulse method, a frequency modulated continuous wave (FMCW) method, a frequency shift keying (FSK) method, or the like. For example, the radar signal may refer to a signal modulated according to a Frequency Modulation Continuous Wave scheme. The frequency-modulated continuous wave scheme may mean a scheme in which a frequency-modulated signal is continuously transmitted. Specifically, the frequency of the radar signal modulated according to the frequency modulated continuous wave system may vary with time. For example, the frequency of the radar signal modulated according to the frequency modulated continuous wave scheme may increase or decrease with time. However, in the present invention, the radar signal is not limited thereto and may include all of the signals that can pass through the obstacle 110.

The radar signal receiving unit 220 may receive the radar signal output through the radar signal output unit 210. [ The radar signal receiving unit 220 may receive the reflected radar signal when the radar signal output on the arbitrary locus is reflected by the obstacle 110 or the target 120. The radar signal receiving unit 220 can receive a radar signal whenever it moves by a half distance of the wavelength of the output radar signal. At this time, the radar signal received by the radar signal receiving unit 220 may be a radar signal reflected from the target 120 by the radar signal output from the radar signal output unit 210. Or the radar signal received by the radar signal receiving unit 220 may be a signal reflected by the obstacle 110 located between the radar signal output unit 210 and the target 120.

The positional position sensor 230 can determine the relative position of the target detection apparatus 100 by using the position when the radar signal is outputted through the radar signal output unit 210. [ Or the positional position sensor 240 can determine the relative position of the target detection apparatus 100 by using the position when the radar signal reception unit 220 has received the output radar signal. The relative position of the target detection device 100 acquired through the position measurement sensor 230 may be located in any locus moving by the user's operation. The relative position of the target detection device 100 determined through the position measurement sensor 240 can be used when the target detection portion 230 detects the target 120. [

The target detection unit 240 detects the position of the target by using the characteristics of the radar signal outputted and received through the target detection apparatus 100 based on the relative position of the target detection apparatus 100 acquired through the position measurement sensor 230 120). ≪ / RTI >

At this time, the characteristics of the radar signal outputted through the target detection apparatus 100, the radar signal reflected by the obstacle 110, and the radar signal reflected by the target 120 may be different from each other. Herein, the characteristics may mean all kinds of characteristics that cause a difference between radar signals. Specifically, the characteristics may include frequency, magnitude, phase, etc. of the radar signal.

For example, the target detection apparatus 100 may detect the frequency of the radar signal output through the target detection apparatus 100, the frequency of the radar signal reflected and received by the obstacle 110, The distance from the target detection apparatus 100 to the obstacle 110 and the target 120 can be determined using the frequency of the radar signal. Since the obstacle 110 is closer to the target detection apparatus 100 than the target 120, the target detection apparatus 100 can detect the target 120 by removing the radar signal having the corresponding frequency at a short distance .

Accordingly, the target detection apparatus 100 according to the present invention detects and detects a target 120 by outputting and receiving a radar signal every half of a wavelength of a radar signal output from the target detection apparatus 100, thereby using a radar apparatus including a plurality of antennas And may have performance similar to detecting the target 120 by outputting and receiving a radar signal. In addition, the target detection apparatus 100 according to the present invention detects and detects a target 120 by outputting and receiving a radar signal every half of a wavelength of a radar signal output from the target detection apparatus 100, May have performance similar to detecting the target 120 by outputting and receiving a radar signal using the apparatus.

FIG. 3 illustrates an example of transmitting and receiving a radar signal by moving one antenna according to an embodiment.

The present invention discloses a target detection apparatus 100 having a capability similar to detecting a target 120 using a radar apparatus including a plurality of antennas using a radar apparatus including at least one antenna. Or target detection device 100 having similar performance to detecting target 120 using a plurality of radar devices including at least one antenna using a radar device including at least one antenna.

3 (a), a radar apparatus including a plurality of antennas or a plurality of radar apparatuses including at least one antenna are arranged in a specific manner, and a radar signal is outputted through each antenna The target 120 can be detected more accurately and precisely. However, as shown in FIG. 3A, the target detecting apparatus 100 using a plurality of radar apparatuses including a plurality of antennas or at least one antenna has a disadvantage in that it is large in size and unit cost . Accordingly, in the present invention, the target detection apparatus 100 provides a method of outputting and receiving a radar signal while moving a radar apparatus including at least one antenna as shown in FIG. 3 (b). Such a series of processes can be recognized as a fixed target detecting apparatus 100 moving by user's operation in an extremely short time. Therefore, the target detection apparatus 100 according to the present invention has similar performance to that of a plurality of radar apparatuses including at least one antenna.

3 (c), the target detecting apparatus 100 outputs a radar signal every time it moves by a half of the wavelength of the output radar signal while moving in an arbitrary trajectory by a user's operation, Or the radar signal reflected by the target 120. [0031] The arbitrary trajectory may vary depending on the user's operation, and may be continuous or discontinuous.

For example, the target detection apparatus 100 may be moved more densely for areas of more interest among the areas that the user intends to detect. In addition, the target detection apparatus 100 may output a radar signal for an area of interest, which is more interested in the user, by operation, and may not output a radar signal for the other areas.

FIG. 4 is a flowchart illustrating a target detection method performed by the target detection apparatus according to an exemplary embodiment in order.

There is provided a method of detecting a target 120 that is portable by a user and in which a target detection device 100 and a target 120 are provided with target detection There may be differences in methods.

If there is an obstacle 100 between the target detection apparatus 100 and the target 120, the target detection apparatus 100 moves in accordance with an arbitrary trajectory by the user in step 410, The radar signal can be outputted toward the direction of the radar signal. At this time, the target detection apparatus 100 can output a radar signal whenever it moves by half the wavelength of the output radar signal. At this time, the radar signal may be modulated by a pulse method, a frequency modulated continuous wave (FMCW) method, a frequency shift keying (FSK) method, or the like. For example, the radar signal may refer to a signal modulated according to a Frequency Modulation Continuous Wave scheme. The frequency-modulated continuous wave scheme may mean a scheme in which a frequency-modulated signal is continuously transmitted. Specifically, the frequency of the radar signal modulated according to the frequency modulated continuous wave system may vary with time. For example, the frequency of the radar signal modulated according to the frequency modulated continuous wave scheme may increase or decrease with time. However, in the present invention, the radar signal is not limited thereto and may include all of the signals that can pass through the obstacle 110.

When the radar signal output from the target detection apparatus 100 reaches the obstacle 110, the radar signal can be reflected by the obstacle 110 or transmitted through the obstacle 110. The radar signal reflected by the obstacle 110 may correspond to the first reflected signal. The radar signal transmitted through the obstacle 110 may be reflected by the target 120. In addition, the radar signal reflected by the target 120 may be reflected back to the obstacle 110 or may be transmitted through the obstacle 110. The radar signal transmitted through the obstacle 110 among the radar signals reflected on the target 120 may correspond to the second reflected signal.

In step 420, the target detection apparatus 100 may receive a first reflected signal reflected by the obstacle 110 and a second reflected signal reflected by the target 120 and transmitted through the obstacle 110 . At this time, the radar signal may be received by the antenna, and the first and second reflection signals may have different characteristics because they are reflected at different positions. Here, the characteristic included in the first reflection signal and the second reflection signal may mean all kinds of characteristics that cause a difference between signals. For example, the characteristics may include frequency, magnitude, phase, etc. of the radar signal.

In step 430, the target detection apparatus 100 may remove the first reflected signal using different characteristics between the received first and second reflected signals. Specifically, the target detection apparatus 100 may mix a radar signal with the received first and second reflected signals. In this case, when the radar signal modulated according to the FMCW method is output, the frequency of the reflected signal can be determined according to the separation distance between the target detection apparatus 100 and the object that reflects the radar signal. For example, the frequency of the second reflected signal reflected from the target 120 located behind the obstacle 110 may be higher than the frequency of the first reflected signal reflected from the obstacle 110. Therefore, the frequency obtained by mixing the radar signal with the first reflected signal may be higher than the frequency obtained by mixing the radar signal with the second reflected signal. The result of mixing the radar signal with the first reflected signal and the radar signal with the second reflected signal may have a constant frequency.

That is, when the result obtained by mixing the radar signal with the first reflected signal and the result obtained by mixing the radar signal with the second reflected signal is different, it can be seen that the first reflected signal and the second reflected signal are reflected by different objects .

Or if the result of mixing the radar signal with the first reflected signal and the result of mixing the radar signal with the second reflected signal are the same, the first reflected signal and the second reflected signal are reflected by the same object.

For example, the target detection apparatus 100 may filter signals below a cut-off frequency through a high pass filter (HPF) with a fixed cut-off frequency set. That is, the target detection apparatus 100 may filter the reflected signal from the object located within a distance corresponding to the cut-off frequency from the target detection apparatus 100. [ Specifically, when the frequency obtained by mixing the radar signal with the first reflected signal is lower than the cut-off frequency, the target detection apparatus 100 can filter the result of mixing the radar signal with the first reflected signal. Alternatively, the target detection apparatus 100 may extract the result of mixing the second reflection signal and the radar signal by adjusting the cut-off frequency according to the separation distance between the target 120 and the target detection apparatus 100.

The target detection apparatus 100 may filter the result of mixing the first reflected signal and the radar signal when the obstacle 110 is located within a certain distance from the target detection apparatus 100. [ A certain distance at this time may mean the maximum separation distance. Specifically, when the obstacle 110 is located a distance longer than the maximum separation distance, the frequency of the first reflection signal may be higher than the cut-off frequency of the target detection apparatus 100. [ Thus, the target detection apparatus 100 can filter the first reflected signal reflected from the obstacle 110 existing within the maximum distance apart. In addition, the target detection apparatus 100 may filter the first reflected signal when the obstacle 110 is located over a certain distance from the target detection apparatus 100. [ A certain distance at this time may mean the minimum separation distance. Thus, the distance between the minimum separation distance and the maximum separation distance may be the spacing adjustable range of the target detection apparatus 100.

In step 440, the target detection apparatus 100 may detect the target 120 using the result of mixing the extracted second reflected signal and the radar signal. At this time, the target detection apparatus 100 can detect the target 120 based on the relative position when the extracted second reflected signal is received.

Next, if there is no obstacle between the target detection device 100 and the target 120, the target detection device 100 may receive the radar signal reflected by the target 120 at step 450.

In step 460, the target detection apparatus 100 may detect the target 120 using the reflected and received radar signal. At this time, the target detection apparatus 100 can detect the target 120 based on the relative position when the reflected radar signal is received.

The apparatus described above may be implemented as a hardware component, a software component, and / or a combination of hardware components and software components. For example, the apparatus and components described in the embodiments may be implemented within a computer system, such as, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable array (FPA) A programmable logic unit (PLU), a microprocessor, or any other device capable of executing and responding to instructions. The processing device may execute an operating system (OS) and one or more software applications running on the operating system. The processing device may also access, store, manipulate, process, and generate data in response to execution of the software. For ease of understanding, the processing apparatus may be described as being used singly, but those skilled in the art will recognize that the processing apparatus may have a plurality of processing elements and / As shown in FIG. For example, the processing unit may comprise a plurality of processors or one processor and one controller. Other processing configurations are also possible, such as a parallel processor.

The software may include a computer program, code, instructions, or a combination of one or more of the foregoing, and may be configured to configure the processing device to operate as desired or to process it collectively or collectively Device can be commanded. The software and / or data may be in the form of any type of machine, component, physical device, virtual equipment, computer storage media, or device , Or may be permanently or temporarily embodied in a transmitted signal wave. The software may be distributed over a networked computer system and stored or executed in a distributed manner. The software and data may be stored on one or more computer readable recording media.

The method according to an embodiment may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions to be recorded on the medium may be those specially designed and configured for the embodiments or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Includes hardware devices that are specially configured to store and execute program instructions such as magneto-tical media and ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. For example, it is to be understood that the techniques described may be performed in a different order than the described methods, and / or that components of the described systems, structures, devices, circuits, Lt; / RTI > or equivalents, even if it is replaced or replaced. Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

100: target detection device
110: Obstacle
120: target
210: Radar signal output section
220: Radar signal receiver
230: Position sensor
240: target detection unit

Claims (10)

A target detection method performed by a radar device including one transmission / reception antenna,
Outputting the radar signal every time it moves according to an arbitrary trajectory in a detection region to be detected by a user's hand and moves by a half distance of a wavelength of a radar signal;
Receiving the radar signal, the radar signal being reflected by the target;
Determining a relative position of the radar device within the arbitrary trajectory when the reflected radar signal is received; And
Detecting a target located within the detection area using the determined relative position of the radar device
Lt; / RTI >
The arbitrary locus in the detection region
Wherein the detection of the target is continuous or discontinuous by the operation of the user. The method according to claim 1,
Wherein the outputting step comprises:
A target detection method that outputs a radar signal at every sampling interval. 3. The method of claim 2,
The sampling interval may be,
And a wavelength of a radar signal output from the radar device is considered. The method according to claim 1,
Wherein the radar signal comprises:
A frequency modulation continuous wave method, a pulse method, and a frequency shifting keying method. The method according to claim 1,
The target may include:
Wherein the radar signal is located at a rear portion of an obstacle existing in a direction in which the radar signal is output. 1. A target detection apparatus comprising a radar apparatus including a transmission / reception antenna,
A radar signal output unit which moves according to an arbitrary trajectory in a detection region for detecting a target by a user's hand and outputs the radar signal every time the radar signal moves by a half of a wavelength of the radar signal;
A radar signal receiving unit for receiving the radar signal from which the output radar signal is reflected by the target;
A position location sensor for determining a relative position of the target detection device within the arbitrary locus when the reflected radar signal is received; And
A target detection unit for detecting a target located within the detection area using the determined relative position of the target detection device,
Lt; / RTI >
The arbitrary locus in the detection region
And can be continuous or discontinuous by the operation of the user. The method according to claim 6,
Wherein the radar signal output unit comprises:
A target detection device that outputs a radar signal at every sampling interval. 8. The method of claim 7,
The sampling interval may be,
A target detection device that considers the wavelength of a radar signal output from a radar device. The method according to claim 6,
Wherein the radar signal comprises:
Wherein the modulation signal is modulated by at least one of a frequency modulation continuous wave method, a pulse method, and a frequency shifting keying method. The method according to claim 6,
The target may include:
And is located at the rear of an obstacle present in a direction in which the radar signal is output.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200052113A (en) * 2018-11-06 2020-05-14 재단법인대구경북과학기술원 Wall-penetrating radar apparatus and method including matching structure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000081487A (en) * 1998-05-08 2000-03-21 Osaka Gas Co Ltd Surveying method and device
JP2000329848A (en) * 1999-05-24 2000-11-30 Osaka Gas Co Ltd Probing method and device thereof
KR20030073824A (en) * 2002-03-13 2003-09-19 주식회사 레인콤 A method and apparatus for upgrading a system firmware by using an universal serial bus
JP2005315820A (en) * 2004-01-28 2005-11-10 Rcs:Kk Obstacle detector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000081487A (en) * 1998-05-08 2000-03-21 Osaka Gas Co Ltd Surveying method and device
JP2000329848A (en) * 1999-05-24 2000-11-30 Osaka Gas Co Ltd Probing method and device thereof
KR20030073824A (en) * 2002-03-13 2003-09-19 주식회사 레인콤 A method and apparatus for upgrading a system firmware by using an universal serial bus
JP2005315820A (en) * 2004-01-28 2005-11-10 Rcs:Kk Obstacle detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200052113A (en) * 2018-11-06 2020-05-14 재단법인대구경북과학기술원 Wall-penetrating radar apparatus and method including matching structure
KR102171161B1 (en) * 2018-11-06 2020-10-28 재단법인대구경북과학기술원 Wall-penetrating radar apparatus and method including matching structure

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