KR101527771B1 - METHOD FOR AREA DETECTION SCANNING OF FMCW(frequency-modulated continuous wave) RADAR FOR AREA DETECTION SCANNING AND FMCW RADAR FOR AREA DETECTION SCANNING - Google Patents
METHOD FOR AREA DETECTION SCANNING OF FMCW(frequency-modulated continuous wave) RADAR FOR AREA DETECTION SCANNING AND FMCW RADAR FOR AREA DETECTION SCANNING Download PDFInfo
- Publication number
- KR101527771B1 KR101527771B1 KR1020140040310A KR20140040310A KR101527771B1 KR 101527771 B1 KR101527771 B1 KR 101527771B1 KR 1020140040310 A KR1020140040310 A KR 1020140040310A KR 20140040310 A KR20140040310 A KR 20140040310A KR 101527771 B1 KR101527771 B1 KR 101527771B1
- Authority
- KR
- South Korea
- Prior art keywords
- scanning
- fmcw radar
- propagation constant
- detection
- frequency
- Prior art date
Links
Images
Classifications
-
- 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
- G01S13/08—Systems for measuring distance only
- G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
- G01S13/34—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
Abstract
Spatial detection scanning FMCW radar and space detection scanning A method of space detection scanning of an FMCW radar is disclosed. Spatial detection scanning FMCW (frequency modulation continuous wave) radar spatial detection method is a space detection scanning FMCW radar determines the detection range, space detection scanning FMCW radar determines the frequency range corresponding to the detection range and space detection scanning The FMCW radar may include detecting a detection range by emitting a beam corresponding to a frequency range, wherein the FMCW radar includes a metamaterial-based transmission array antenna and a metamaterial leakage Wave receiving array antenna.
Description
The present invention relates to a radar, and more particularly to a frequency-modulated continuous wave (FMCW) radar.
The application range of antennas and microwave circuits that can be applied to wireless communication and mobile communication is widening in accordance with the rapid development trend into an information society. Antenna and microwave circuit are being developed into various convergence fields in combination with biotechnology and nanotechnology. Among them, researches on microwave circuit applications using electromagnetic novel materials such as meta - materials have been actively carried out.
The metamaterials originally proposed by Veselago in 1968 are artificially structured materials designed to possess special electromagnetic properties that are negative in both permittivity and permeability and are not normally found in nature. Representative metamaterials include negative index material (NIM), double negative (DNG), left handed material (LHM), backward wave (BW) media, electromagnetic band gap (EBG) structures and high-impedance planar structures.
The metamaterial consists of a periodic structure that is much shorter than the wavelength in order to have a negative dielectric constant or a negative permeability that does not exist in a natural state at a specific frequency. Specifically, Metamaterial (MTM) is an extension of past physical phenomena. It has various properties (negative refractive index, independence of wavelength and frequency, inverse of phase velocity and group delay characteristics, inverse Doppler effect, Reverse focussing, magnetization phenomenon of non-magnetizing material, surface plasma, etc.). These metamaterials are also called artificial electromagnetic structures because they can realize unique electromagnetic characteristics by artificial structure.
The meta-electromagnetic structure technology is a next-generation technology based on frequency-independent wavelength, phase and refractive index control, which was impossible with existing technologies. It can realize miniaturization and high performance of information communication equipment and electronic products, / High-efficiency radio communication components, optical communication components, medical diagnostic imaging devices, security surveillance systems, etc., are expected to have a significant ripple effect on the industry in the ubiquitous society.
A first object of the present invention is to provide a method for implementing a space-finding scanning FMCW radar.
A second object of the present invention is to provide a space detection scanning FMCW radar.
According to one aspect of the present invention, there is provided a method of detecting a spatial modulation scanning continuous wave (FMCW) radar using a space detection scanning FMCW radar, Determining a frequency range corresponding to the detection range, and performing a spatial detection scanning FMCW radar to detect a detection range by emitting a beam corresponding to a frequency range, wherein the FMCW radar includes a space detection scanning FMCW The radar may include a metamaterial leakage wave transmitting array antenna and a metamaterial leakage wave receiving array antenna implemented on a meta-material basis. Wherein the meta-material leakage wave transmission array antenna is configured to radiate a beam corresponding to the frequency range by connecting a plurality of series structures in which a plurality of unit radiation elements are connected in series in parallel, A plurality of serial structures in which a plurality of unit radiating elements are connected in series may be connected in parallel to receive a beam corresponding to the frequency range. Wherein the radiation beam direction of the meta-material leakage radiation transmitting array antenna is based on a ratio of a propagation constant of the antenna surface, which is a propagation constant at the surface of the meta- material leakage radiation transmitting antenna, and a propagation constant of a beam radiated into the air, And when the ratio of the antenna surface wave constant to the medium wave constant is positive, the radiation beam direction is a traveling direction of the beam, and when the ratio of the antenna surface wave constant to the medium wave constant is negative, May be the opposite direction of the advancing direction of the beam. The radiation beam direction is determined based on the following equation,
≪ Equation &
remind
In order to achieve the second object of the present invention, there is provided a frequency modulation continuous wave (FMCW) radar for performing space detection according to an aspect of the present invention, wherein the FMCW radar includes a space detection scanning FMCW A frequency range determination unit for determining a frequency range corresponding to the detection range, and a beam transmission / reception unit for radiating a beam corresponding to the frequency range to detect the detection range The beam transmitting and receiving unit may include a meta-material leakage radiation transmitting array antenna and a meta-material leakage radiation receiving array antenna implemented on a meta-material basis. Wherein the meta-material leakage wave transmission array antenna is configured to radiate a beam corresponding to the frequency range by connecting a plurality of series structures in which a plurality of unit radiation elements are connected in series in parallel, A plurality of serial structures in which a plurality of unit radiating elements are connected in series may be connected in parallel to receive a beam corresponding to the frequency range. Wherein the radiation beam direction of the meta-material leakage radiation transmitting array antenna is based on a ratio of a propagation constant of the antenna surface, which is a propagation constant at the surface of the meta- material leakage radiation transmitting antenna, and a propagation constant of a beam radiated into the air, And when the ratio of the antenna surface wave constant to the medium wave constant is positive, the radiation beam direction is a traveling direction of the beam, and when the ratio of the antenna surface wave constant to the medium wave constant is negative, May be the opposite direction of the advancing direction of the beam. The radiation beam direction is determined based on the following equation,
≪ Equation &
remind
As described above, the method of implementing the space detection scanning FMCW radar and the space detection scanning FMCW radar according to the embodiment of the present invention are not the electric radiation beam scanning and the mechanical scanning method by the active element, This is a passive radar that is scanned. Therefore, it is easy to design method and process, and it is advantageous in mass production because of printed form, and the cost of production is very low because expensive active elements are not used. In addition, scanning for two-dimensional spatial sensing is automatic in accordance with frequency changes, making it well suited for frequency-modulated radar systems that use a wide bandwidth, especially for space-sensitive FMCW radar systems.
1 is a graph illustrating a method of detecting an object (if fixed) using an FMCW radar.
2 is a graph showing a method of detecting an object (when moving) using an FMCW radar.
3 shows a graph of a bit signal sampled based on DFT.
4 is a conceptual diagram illustrating a unit radiating element for implementing a space detection scanning FMCW radar according to an embodiment of the present invention.
5 is a conceptual diagram illustrating a space-sensing scanning FMCW radar according to an embodiment of the present invention.
6 is a conceptual diagram illustrating a scanning operation characteristic of a space detection scanning FMCW radar according to an embodiment of the present invention.
7 is a conceptual diagram illustrating a scanning operation of a space detection scanning FMCW radar according to an embodiment of the present invention.
8 is a flowchart illustrating a scanning operation of a space detection scanning FMCW radar according to an embodiment of the present invention.
FIG. 9 is a block diagram illustrating a scanning operation of a space detection scanning FMCW radar according to an embodiment of the present invention.
While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing.
The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.
It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.
The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Hereinafter, the same reference numerals will be used for the same constituent elements in the drawings, and redundant explanations for the same constituent elements will be omitted.
In a frequency modulation continuous wave (FMCW) radar system using a frequency modulation method, the radiation angle is automatically changed according to a frequency change without using an electric scanning method using an active element and a mechanical radiation beam scanning method, A radar to which a metamaterial array antenna is applied is disclosed.
1 is a graph showing a method of detecting an object using an FMCW radar.
The FWCW radar can measure the distance and velocity of the target by transmitting a frequency modulated continuous signal to the target.
For a typical CW (continuous wave) radar, the speed of a moving object can be measured, but the distance can not be measured due to the relatively narrow bandwidth. Therefore, the FMCW radar modulates the amplitude, frequency, or phase of the transmitted wave to broaden the bandwidth to perform distance measurement and velocity measurement.
Referring to FIG. 1, it is assumed that an object distant from the radar by a distance R is stopped, and the frequency waveform is expressed with time. First, when a linearly frequency modulated signal is transmitted as in the first waveform, it is reflected on an object at a distance R and is received by a radar after a time delay of 2R / c. At this time, if the transmitted signal and the received signal are mixed with each other, the difference frequency can be obtained. The frequency is expressed by
&Quot; (1) "
Based on the difference frequency information calculated in Equation (1), the distance R can be determined by substituting into Equation (2) below.
&Quot; (2) "
2 is a graph showing a method of detecting an object using an FMCW radar.
It is assumed that the object is moving at a relative velocity Vr that is less than the distance R from the radar.
The FMCW radar can transmit a frequency modulated continuous signal to measure the speed and distance of the target.
In this case, a frequency shift as shown in Equation (3), which is caused by the time delay of 2R / c and the Doppler effect, occurs.
&Quot; (3) "
When the transmitted signal and the received signal are mixed, the sum and the difference of the frequency change fr due to the time-delay and the frequency change fv due to the Doppler effect can be obtained as shown in the lower part of FIG. 2, Distance and velocity information can be obtained as shown in Equation 4.
&Quot; (4) "
The bit frequency and the Doppler frequency can be obtained by signal processing.
The bit frequency may represent the difference between the transmitted signal and the received signal. The bit frequency is expressed by fbu when it is the provider pf, and the frequency when it is down-pfed can be expressed by fbd.
The frequency spectrum of the bit signal sampled at the frequency fs can be obtained by performing a discrete fourier transform (DFT) of Ns points in each chirp cycle. Based on the frequency spectrum of the bit signal determined in the FMCW radar, the surrounding environment can be sensed to detect objects in the surroundings. The FMCW radar can still transmit the sensing signal of the FMCW radar while the signal receiver of the FMCW radar receives the signal reflected from the target. The FMCW radar can mix the waveform of the received signal and the transmitted sensing signal to generate a bit signal. If there is more than one target, the output of the mixer may be a bit signal having one or more different frequency bands.
3 shows a graph of a bit signal sampled based on DFT.
Referring to FIG. 3, it is a spectrum of a bit signal sampled at a frequency fs by performing DFT of Ns points in each chirp cycle.
Delta-f is the frequency step and Ns is the number of data samples in the chirp period T.
In the case of the FMCW radar, the target information is generated by pairing the frequency peak information extracted from the up chirp and the down chirp, respectively.
The bit frequencies detected in the up chirp, which is the frequency rising period and the down chirp, which is the frequency falling period, are fbu = fr-fd and fbd = fr + fd. That is, fbu and fbd are values shifted symmetrically with respect to fr as a + -fd value. Therefore, when the combination is found, the distance and speed can be obtained. This method is called a pairing algorithm.
In performing the pairing algorithm, more than target can be detected when there are two targets, and these targets are called ghost targets. When such a ghost target exists, it is difficult to accurately sense the object in the FMCW radar.
When the pairing algorithm is executed, as the number of targets is increased, a lot of ghost targets are generated. Various techniques are used to prevent the ghost target from being generated. However, as the frequency peak extracted from the upchip / downchuck increases, the probability of occurrence of the ghost target increases. In the case where a structure is spread over a road such as a tunnel or a guard rail, there may occur a situation where the radar is difficult to be sensed further. In such a case, detection of the radar and control stability may be threatened by the occurrence of the ghost target .
Such an FMCW radar can detect an object through a beam generated based on a frequency modulation scheme within a conventional wide frequency bandwidth. In FMCW radar, most antennas can be operated with high gain for long detection distances. The high gain array antennas have narrow radiation pattern characteristics. Due to the narrow radiation pattern characteristic, a method of spatially radiating a radiation beam of an FMCW radar electrically or mechanically must be used in order to detect a space based on a two-dimensional space detection radar. However, in this case, the increase of material cost and development cost in the implementation of FMCW radar causes an increase in the overall radar development unit price. Also, due to the complexity of the design, there is a limit to mass production of FMCW radar. Therefore, there is a need in the radar market for a method of scanning a radiation beam in addition to a method of adjusting the radiation beam using an active element or scanning a beam using a mechanical motor.
In the present invention, an FMCW radar using a metamaterial leak-spectrum antenna is applied to solve the problem, and a FMCW radar using the antenna array is described. Hereinafter, an FMCW radar according to an embodiment of the present invention will be referred to as a space detection scanning FMCW radar.
The FMCW radar according to an embodiment of the present invention is an FMCW radar using a metamaterial leak-spectrum array antenna in which the angle of a radiation beam changes according to a frequency. By scanning the radiation beam by changing the angle of the radiation beam using the variation of the propagation constant on the surface of the radar array antenna, it is possible to perform the space detection scanning over a wide range without using the active array antenna.
4 is a conceptual diagram illustrating a unit radiating element for implementing a space detection scanning FMCW radar according to an embodiment of the present invention.
The unit radiating element can be used to implement a metamaterial leakage radiation transmitting array antenna and a metamaterial leakage radiation receiving array antenna of a space detection scanning FMCW radar.
Referring to FIG. 4, the unit radiating element may include a via-
The via-
The
A plurality of such unit radiating elements may be connected in series and parallel structures to form a meta-material leakage radiation transmitting array antenna and a meta-material leakage radiation receiving array antenna.
The metamaterial may include a material having a periodic structure that is much shorter than the wavelength to have a negative or negative permeability that does not exist in a natural state at a particular frequency. Specifically, Metamaterial (MTM) is an extension of past physical phenomena. It has various properties (negative refractive index, independence of wavelength and frequency, inverse of phase velocity and group delay characteristics, inverse Doppler effect, Reverse focussing, magnetization phenomenon of non-magnetizing material, surface plasma, etc.). Representative metamaterials include negative index material (NIM), double negative (DNG), left handed material (LHM), backward wave (BW) media, electromagnetic band gap (EBG) structures and high-impedance planar structures.
5 is a conceptual diagram illustrating a space-sensing scanning FMCW radar according to an embodiment of the present invention.
5, the space-sensing scanning FMCW radar includes a metamaterial leakage radiation
The metamaterial leakage radiation
The metamaterial leakage wave receiving
The
The transmission and
Spatial detection scanning In FMCW radar, space can be scanned by controlling the scanning direction of the beam of the radar based on the metamaterial leakage radiation transmitting
6 is a conceptual diagram illustrating a scanning operation characteristic of a space detection scanning FMCW radar according to an embodiment of the present invention.
Referring to FIG. 6, a space detection scanning FMCW radar includes a metamaterial leakage radiation transmitting array antenna, a metamaterial leakage radiation receiving array antenna, a micro strip power dividing device, a transmitting / receiving chip, and a
Spatial detection Scanning The direction of the radiation beam emitted from an FMCW radar can be determined by the sign of the ratio of the propagation constant (βx) at the array antenna surface to the propagation constant (k0) of the airwaves radiated into the air. That is, in the case of? X / k0 > 0, the radiation is propagated in the
That is, when the propagation constant on the surface of the array antenna changes, the traveling direction of the radio wave changes. In the embodiment of the present invention, the direction in which the space-sensing scanning FMCW radar scans the space can be changed based on the characteristics of the meta-material that changes the propagation constant on the surface depending on the frequency. That is, by changing the frequency of the radar, it is possible to change the direction in which the space detection scanning FMCW radar scans the space.
7 is a conceptual diagram illustrating a scanning operation of a space detection scanning FMCW radar according to an embodiment of the present invention.
FIG. 7 shows a scanning direction of a beam generated in a metamaterial leakage radiation transmitting array antenna of a space detection scanning FMCW radar.
Referring to FIG. 7, conceptual radiation pattern scanning for the horizontal direction of the present invention is shown.
The angle (?) At which the radiation beam is transmitted (or the beam scanning angle of the space-finding scanning FMCW radar) at the metamaterial leakage waveguide antenna can be determined by Equation (5) below.
&Quot; (5) "
Referring to Equation (5), the angle of the radiation beam is determined by the propagation coefficient at the surface of the array antenna
As shown in FIG. 7, the scanning angle of a space-detected scanning FMCW radar radiated by a specific frequency may be determined to be a different value depending on the frequency. For example, a space detection scanning FMCW radar may have a scanning angle that can be scanned by a space-sensing scanning FMCW radar by frequency. Spatial detection scanning When an FMCW radar performs an overall scanning on a space, scanning can be performed for a space corresponding to all available frequency ranges by increasing the frequency at regular intervals.
In another embodiment, if the spatial detection scanning FMCW radar is intended to perform spatial scanning (selective scanning) for a particular location, the frequency for scanning the spatial scanning range may be determined. Spatial detection Scanning The FMCW radar is capable of spatially spatting the generated beam pattern based on the determined frequency.
When using such a space-detection scanning FMCW radar, it is possible to scan a wide or selected space based on the radiation beam generated by the frequency variation.
This space-finding scanning FMCW radar is easy to design and process, it is in printed form, it is advantageous for mass production, and the production cost is very low because expensive active elements are not used. In addition, because scanning for two-dimensional space detection is automatic in accordance with frequency changes, it can be well suited for frequency-modulated radar systems that use a wide bandwidth, especially FMCW radar systems for space detection.
8 is a flowchart illustrating a scanning operation of a space detection scanning FMCW radar according to an embodiment of the present invention.
Figure 8 illustrates an exemplary method for performing spatial scanning on a space-detected FMCW radar. The method of operation of the space detection FMCW radar disclosed in FIG. 8 is, as one example, a space detection FMCW radar can perform a search for a space through various other operation methods.
Referring to FIG. 8, a space detection FMCW radar determines whether or not to perform selective scanning (step S800).
Spatial detection FMCW radar can perform full-range scanning or selective scanning as a scanning method.
Full-range scanning can be a way for a space-detection FMCW radar to scan a beam for every range that can be explored and perform scanning.
Selective scanning may be a method in which a spatial detection FMCW radar radiates a beam for a specific range of searchable ranges to selectively perform scanning.
The space detection FMCW radar performs full range scanning (step S820).
Spatial detection When the FMCW radar performs full range scanning, it can determine the scanning period and perform spatial scanning based on the used frequency range.
As described above, the scanning angle of a spatial detection scanning FMCW radar emitting at a specific frequency may have different values depending on the frequency of the wavelength. Spatial detection scanning When an FMCW radar performs an overall scanning on a space, scanning can be performed on a space corresponding to all available frequency ranges by increasing the frequency of the radar beam at regular intervals. When the full range scanning is performed, the frequency of the wavelength can be increased or decreased at regular intervals based on the inputted period.
The space detection FMCW radar performs selective scanning (step S840).
Space Detection When an FMCW radar performs selective scanning, the frequency for the range of selective scans can be determined. The FMCW radar beam generated based on the determined frequency can be selectively scanned at a specific position.
FIG. 9 is a block diagram illustrating a scanning operation of a space detection scanning FMCW radar according to an embodiment of the present invention.
9, the space detection scanning FMCW radar may include a scanning
The scanning
The
If the space detection scanning FMCW radar performs selective scanning, the
The beam transmitting / receiving
The
It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. It will be possible.
Claims (10)
Determining the detection range of the space detection scanning FMCW radar;
Wherein the spatial detection scanning FMCW radar determines a frequency range corresponding to the detection range; And
Wherein the spatial detection scanning FMCW radar emits a beam corresponding to the frequency range to perform detection for the detection range,
The space-sensing scanning FMCW radar includes a metamaterial leakage radiation transmitting array antenna and a metamaterial leakage radiation receiving array antenna implemented on a meta-material basis,
Wherein the radiation beam direction of the meta-material leakage radiation transmitting array antenna is based on a ratio of a propagation constant of the antenna surface, which is a propagation constant at the surface of the meta- material leakage radiation transmitting antenna, and a propagation constant of a beam radiated into the air, Lt; / RTI >
When the ratio of the antenna surface propagation constant to the medium propagation constant is positive, the radiation beam direction is a traveling direction of the beam,
Wherein the direction of the radiation beam is opposite to the direction of travel of the beam when the ratio of the antenna surface propagation constant to the media propagation constant is negative.
The metamaterial leakage radiation transmission array antenna is implemented to radiate a beam corresponding to the frequency range by connecting a plurality of series structures in which a plurality of unit radiating elements are connected in series in parallel,
Wherein the metamaterial leakage wave receiving array antenna is configured to receive a beam corresponding to the frequency range by connecting a plurality of series structures in which a plurality of unit radiating elements are connected in series in parallel.
The radiation beam direction is determined based on the following equation,
≪ Equation &
remind
Wherein the spatially detected scanning FMCW radar performs full range scanning, the spatial frequency of the beam in the FMCW radar.
A detection range determining unit for determining a detection range of the space detection scanning FMCW radar;
A frequency range determination unit for determining a frequency range corresponding to the detection range; And
And a beam transmitting / receiving unit for radiating a beam corresponding to the frequency range to detect the detection range,
Wherein the beam transmitting and receiving unit includes a meta-material leakage-wave transmitting array antenna and a meta-
Wherein the radiation beam direction of the meta-material leakage radiation transmitting array antenna is based on a ratio of a propagation constant of the antenna surface, which is a propagation constant at the surface of the meta- material leakage radiation transmitting antenna, and a propagation constant of a beam radiated into the air, Lt; / RTI >
When the ratio of the antenna surface propagation constant to the medium propagation constant is positive, the radiation beam direction is a traveling direction of the beam,
Wherein when the ratio of the antenna surface propagation constant to the medium propagation constant is negative, the radiation beam direction is opposite to the direction of travel of the beam.
The metamaterial leakage radiation transmission array antenna is implemented to radiate a beam corresponding to the frequency range by connecting a plurality of series structures in which a plurality of unit radiating elements are connected in series in parallel,
Wherein the metamaterial leakage wave receiving array antenna is configured to receive a beam corresponding to the frequency range by connecting a plurality of series structures in which a plurality of unit radiating elements are connected in series in parallel.
The radiation beam direction is determined based on the following equation,
≪ Equation &
remind
Wherein the space detection scanning FMCW radar is a frequency range of available beams in the space detection scanning FMCW radar when the FMCW radar performs full range scanning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140040310A KR101527771B1 (en) | 2014-04-04 | 2014-04-04 | METHOD FOR AREA DETECTION SCANNING OF FMCW(frequency-modulated continuous wave) RADAR FOR AREA DETECTION SCANNING AND FMCW RADAR FOR AREA DETECTION SCANNING |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140040310A KR101527771B1 (en) | 2014-04-04 | 2014-04-04 | METHOD FOR AREA DETECTION SCANNING OF FMCW(frequency-modulated continuous wave) RADAR FOR AREA DETECTION SCANNING AND FMCW RADAR FOR AREA DETECTION SCANNING |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR101527771B1 true KR101527771B1 (en) | 2015-06-10 |
Family
ID=53505766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020140040310A KR101527771B1 (en) | 2014-04-04 | 2014-04-04 | METHOD FOR AREA DETECTION SCANNING OF FMCW(frequency-modulated continuous wave) RADAR FOR AREA DETECTION SCANNING AND FMCW RADAR FOR AREA DETECTION SCANNING |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR101527771B1 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018226327A1 (en) * | 2017-06-05 | 2018-12-13 | Metawave Corporation | Intelligent antenna metamaterial method and apparatus |
| CN109638477A (en) * | 2019-01-17 | 2019-04-16 | 山东大学 | A kind of broadband low minor lobe circular polarised array antenna on the super surface of load |
| KR20200006666A (en) | 2018-07-11 | 2020-01-21 | 경북대학교 산학협력단 | Motion position detection radar using beam-scanning and control method thereof |
| KR20200009390A (en) * | 2018-07-18 | 2020-01-30 | 국방과학연구소 | Multi-frequency scanning sonar for high speed detection of underwater obstacle |
| US10598923B2 (en) | 2017-07-03 | 2020-03-24 | Samsung Electronics Co., Ltd. | Hybrid two-dimensional (2D) scanner system and method of operating the same |
| WO2020085850A1 (en) * | 2018-10-25 | 2020-04-30 | 주식회사 비트센싱 | Radar device and antenna device used in radar device |
| US10942256B2 (en) | 2017-06-05 | 2021-03-09 | Metawave Corporation | Intelligent metamaterial radar for target identification |
| US11005192B2 (en) | 2017-06-05 | 2021-05-11 | Metawave Corporation | Intelligent metamaterial radar having a dynamically controllable antenna |
| US11005179B2 (en) | 2017-06-05 | 2021-05-11 | Metawave Corporation | Feed structure for a metamaterial antenna system |
| US11099255B2 (en) * | 2018-10-25 | 2021-08-24 | Bitsensing Inc. | Radar and antenna built in radar |
| US11105918B2 (en) | 2017-06-05 | 2021-08-31 | Metawave Corporation | Nodal metamaterial antenna system |
| US11852749B2 (en) | 2018-03-30 | 2023-12-26 | Metawave Corporation | Method and apparatus for object detection using a beam steering radar and a decision network |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130117226A (en) * | 2012-04-18 | 2013-10-25 | 재단법인대구경북과학기술원 | Antenna using meta-material |
| KR20130131620A (en) * | 2012-05-24 | 2013-12-04 | 숭실대학교산학협력단 | Antenna using the absorber based on meta-structure |
| KR20130141527A (en) * | 2010-10-15 | 2013-12-26 | 시리트 엘엘씨 | Surface scattering antennas |
| KR101367259B1 (en) * | 2012-07-24 | 2014-02-26 | 주식회사 엑스닐 | Integrated Repeater with meta-structure antenna |
-
2014
- 2014-04-04 KR KR1020140040310A patent/KR101527771B1/en active IP Right Grant
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130141527A (en) * | 2010-10-15 | 2013-12-26 | 시리트 엘엘씨 | Surface scattering antennas |
| KR20130117226A (en) * | 2012-04-18 | 2013-10-25 | 재단법인대구경북과학기술원 | Antenna using meta-material |
| KR20130131620A (en) * | 2012-05-24 | 2013-12-04 | 숭실대학교산학협력단 | Antenna using the absorber based on meta-structure |
| KR101367259B1 (en) * | 2012-07-24 | 2014-02-26 | 주식회사 엑스닐 | Integrated Repeater with meta-structure antenna |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11005192B2 (en) | 2017-06-05 | 2021-05-11 | Metawave Corporation | Intelligent metamaterial radar having a dynamically controllable antenna |
| US11005179B2 (en) | 2017-06-05 | 2021-05-11 | Metawave Corporation | Feed structure for a metamaterial antenna system |
| US11353552B2 (en) | 2017-06-05 | 2022-06-07 | Metawave Corporation | Intelligent antenna metamaterial method and apparatus |
| US11105918B2 (en) | 2017-06-05 | 2021-08-31 | Metawave Corporation | Nodal metamaterial antenna system |
| WO2018226327A1 (en) * | 2017-06-05 | 2018-12-13 | Metawave Corporation | Intelligent antenna metamaterial method and apparatus |
| CN110997440A (en) * | 2017-06-05 | 2020-04-10 | 美波公司 | Intelligent antenna metamaterial method and device |
| US10942256B2 (en) | 2017-06-05 | 2021-03-09 | Metawave Corporation | Intelligent metamaterial radar for target identification |
| US10598923B2 (en) | 2017-07-03 | 2020-03-24 | Samsung Electronics Co., Ltd. | Hybrid two-dimensional (2D) scanner system and method of operating the same |
| US11852749B2 (en) | 2018-03-30 | 2023-12-26 | Metawave Corporation | Method and apparatus for object detection using a beam steering radar and a decision network |
| KR20200006666A (en) | 2018-07-11 | 2020-01-21 | 경북대학교 산학협력단 | Motion position detection radar using beam-scanning and control method thereof |
| KR102078590B1 (en) * | 2018-07-18 | 2020-02-19 | 국방과학연구소 | Multi-frequency scanning sonar for high speed detection of underwater obstacle |
| KR20200009390A (en) * | 2018-07-18 | 2020-01-30 | 국방과학연구소 | Multi-frequency scanning sonar for high speed detection of underwater obstacle |
| WO2020085850A1 (en) * | 2018-10-25 | 2020-04-30 | 주식회사 비트센싱 | Radar device and antenna device used in radar device |
| US11099255B2 (en) * | 2018-10-25 | 2021-08-24 | Bitsensing Inc. | Radar and antenna built in radar |
| CN109638477A (en) * | 2019-01-17 | 2019-04-16 | 山东大学 | A kind of broadband low minor lobe circular polarised array antenna on the super surface of load |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101527771B1 (en) | METHOD FOR AREA DETECTION SCANNING OF FMCW(frequency-modulated continuous wave) RADAR FOR AREA DETECTION SCANNING AND FMCW RADAR FOR AREA DETECTION SCANNING | |
| US11005179B2 (en) | Feed structure for a metamaterial antenna system | |
| KR101621480B1 (en) | Transit structure of waveguide and dielectric waveguide | |
| KR102495782B1 (en) | New Vehicle Radar Using 3D Printed Luneburg Lenses | |
| US6218979B1 (en) | Wide area time domain radar array | |
| JP6491254B2 (en) | Antenna device and radar device | |
| Hui et al. | Radio ranging with ultrahigh resolution using a harmonic radio-frequency identification system | |
| US11621486B2 (en) | Method and apparatus for an active radiating and feed structure | |
| CN108919271A (en) | A kind of millimetre-wave radar system | |
| US11515611B2 (en) | Transition in a multi-layer substrate between a substrate integrated waveguide portion and a coplanar waveguide portion | |
| US11152701B2 (en) | Phase compensated multi-layer, multi-steering antenna array for millimeter wave applications | |
| JP5576340B2 (en) | Microwave system using altitude directional scanning with frequency hopping | |
| Wang et al. | Spatial diversity 24-GHz FMCW radar with ground effect compensation for automotive applications | |
| Jamlos et al. | Adaptive beam steering of RLSA antenna with RFID technology | |
| Joula et al. | High gain UWB bow‐tie antenna design for ground penetrating radar application | |
| Abedi et al. | Low-cost 3D printed dielectric hyperbolic lens antenna for beam focusing and steering of a 79GHz MIMO radar | |
| Nishikawa et al. | A new position detection method using leaky coaxial cable | |
| Subitha et al. | Development of Rogers RT/Duroid 5880 substrate-based MIMO Antenna array for automotive radar applications | |
| Buffi et al. | Measurement system with leaky coaxial cables operating as distributed antennas for UHF-RFID readers | |
| KR102063467B1 (en) | Antenna and radar apparatus having different beam tilt for each frequency | |
| WO2021141857A2 (en) | Integrated wideband stepped-chirp radar sensor | |
| Karsch et al. | Cognitive FMCW-Radar Concept for Ultrafast Spatial Mapping using Frequency Coded Channels | |
| Vu et al. | Multiple Mobile Equipment Localization in Indoor Environment Based on Cell Sectoring | |
| El-Hameed et al. | An Improved Performance Radar Sensor for K-Band Automotive Radars. | |
| Chen et al. | Multi-antenna system based on substrate integrated waveguide for Ka-band traffic-monitoring radar applications |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| FPAY | Annual fee payment |
Payment date: 20180524 Year of fee payment: 4 |
|
| FPAY | Annual fee payment |
Payment date: 20190503 Year of fee payment: 5 |