KR101655026B1 - Apparatus and method for target detection - Google Patents
Apparatus and method for target detection Download PDFInfo
- 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
- Prior art date
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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
And more particularly, to an apparatus and method for detecting a
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
The radar signal may be output through an antenna existing in the
The radar signal output from the
The
That is, the
The
The
For example, the
Accordingly, the
FIG. 2 illustrates a target detection apparatus according to an embodiment.
The
The radar
The radar signal may be output through an antenna present in the
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
The radar
The
The
At this time, the characteristics of the radar signal outputted through the
For example, the
Accordingly, the
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
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
3 (c), the
For example, the
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
If there is an
When the radar signal output from the
In
In
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
The
In
Next, if there is no obstacle between the
In
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)
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.
Wherein the outputting step comprises:
A target detection method that outputs a radar signal at every sampling interval.
The sampling interval may be,
And a wavelength of a radar signal output from the radar device is considered.
Wherein the radar signal comprises:
A frequency modulation continuous wave method, a pulse method, and a frequency shifting keying method.
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.
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.
Wherein the radar signal output unit comprises:
A target detection device that outputs a radar signal at every sampling interval.
The sampling interval may be,
A target detection device that considers the wavelength of a radar signal output from a radar device.
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 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)
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KR20200052113A (en) * | 2018-11-06 | 2020-05-14 | 재단법인대구경북과학기술원 | Wall-penetrating radar apparatus and method including matching structure |
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JP2005315820A (en) * | 2004-01-28 | 2005-11-10 | Rcs:Kk | Obstacle detector |
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Patent Citations (4)
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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 |
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KR20200052113A (en) * | 2018-11-06 | 2020-05-14 | 재단법인대구경북과학기술원 | Wall-penetrating radar apparatus and method including matching structure |
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