WO2021081904A1 - Structure d'antenne à micro-ondes, radar rotatif à micro-ondes et plateforme mobile - Google Patents

Structure d'antenne à micro-ondes, radar rotatif à micro-ondes et plateforme mobile Download PDF

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Publication number
WO2021081904A1
WO2021081904A1 PCT/CN2019/114762 CN2019114762W WO2021081904A1 WO 2021081904 A1 WO2021081904 A1 WO 2021081904A1 CN 2019114762 W CN2019114762 W CN 2019114762W WO 2021081904 A1 WO2021081904 A1 WO 2021081904A1
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WIPO (PCT)
Prior art keywords
microwave
microstrip
antenna arrays
antenna
group
Prior art date
Application number
PCT/CN2019/114762
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English (en)
Chinese (zh)
Inventor
孙维忠
贺翔
唐照成
刘双
Original Assignee
深圳市大疆创新科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 深圳市大疆创新科技有限公司 filed Critical 深圳市大疆创新科技有限公司
Priority to PCT/CN2019/114762 priority Critical patent/WO2021081904A1/fr
Priority to CN201980039407.6A priority patent/CN112368590A/zh
Publication of WO2021081904A1 publication Critical patent/WO2021081904A1/fr

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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
    • 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
    • G01S7/024—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using polarisation effects
    • 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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/04—Details
    • 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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems

Definitions

  • the present invention generally relates to the technical field of antenna structures, and more specifically to a microwave antenna structure, a microwave rotating radar and a movable platform.
  • microwave radars can be miniaturized and integrated. With the same antenna diameter, microwave radars can obtain narrower antenna beams and higher antenna gains, which can improve the radar’s angular resolution and The angle measurement accuracy is good for resisting electronic interference, clutter interference and multipath reflection interference.
  • the existing microwave radar mainly has the following problems: the size of the high-precision angle measurement radar, especially the large size in the angle measurement direction, and the high cost of the radar.
  • the accuracy of radar angle measurement is closely related to the number of radar receiving channels. The higher the accuracy, the greater the number of radar receiving channels, the larger the radar size, and the higher the cost.
  • the VMIMO radar was developed. VMIMO radar adds a small number of transmission channels, controls the transmission channel to transmit quadrature signals through time division or phase modulation, and performs coherent signal processing on the received signals, and finally realizes the measurement equivalent to the conventional single-transmitting channel radar that doubles the receiving channels. Angular accuracy greatly reduces radar cost and radar size.
  • the equivalent effect of the VMIMO radar antenna is shown in Figure 1 below.
  • the current VMIMO radar has greatly reduced the radar cost and the size of the radar, because the VMIMO radar needs to realize the angle measurement, the receiving antenna or the transmitting antenna must be arranged equidistantly in the angle measurement plane, and the spacing of the transmitting antennas is generally equal to the spacing of the receiving antennas. (Depending on the number of receiving antennas, see Figure 1 that the distance between the transmitting antennas is 4 times the receiving antenna distance), which leads to small radars such as radars for vehicles or small drones, due to the small space size, even With the current VMIMO radar, the size of the radar is still relatively large, especially in the direction of angle measurement.
  • the present invention is proposed in order to solve at least one of the above-mentioned problems.
  • the invention provides a microwave antenna structure, a microwave rotating radar and a movable platform.
  • the antenna structure adopts multiple transmitting channels and multiple receiving channels, and by rationally arranging the transmitting antenna array and the receiving antenna array, a low-cost, compact, And a radar with high angle measurement accuracy.
  • the first aspect of the present invention provides a microwave antenna structure, including:
  • a substrate, a plurality of antenna arrays are formed on a first side surface of the substrate, and the plurality of antenna arrays include at least two transmitting antenna arrays and a plurality of receiving antenna arrays;
  • a plurality of the receiving antenna arrays extend along a first direction, and the plurality of the receiving antenna arrays are parallel to each other and arranged at intervals;
  • At least two of the transmitting antenna arrays extend along a first direction, and at least two of the transmitting antenna arrays are parallel to each other and arranged at intervals;
  • At least two of the transmitting antenna arrays and a plurality of the receiving antenna arrays are arranged in parallel in a second direction, and the second direction is perpendicular to the first direction.
  • the distance between adjacent transmitting antenna arrays is equal to n times the distance between adjacent receiving antenna arrays, where n is an integer related to the number of receiving antenna arrays.
  • the first direction is the length direction or the width direction of the substrate.
  • a plurality of the antenna arrays adopt microstrip antennas, and each of the antenna arrays includes a group of microstrip patch units electrically connected to each other.
  • each of the microstrip patch units in each group of the microstrip patch units has the same size.
  • the area of each of the microstrip patch units in each group of the microstrip patch units decreases in order from the center of symmetry to both sides.
  • the shape of the microstrip patch unit is rectangle, circle, semicircle or ellipse.
  • each group of microstrip patching units includes more than 6 microstrip patching units.
  • the number of the receiving antenna array is 4 or more.
  • it further includes:
  • a feeder network is formed on the first side surface of the substrate, and the feeder network includes a plurality of microstrip lines respectively electrically connected to each group of the microstrip patch unit.
  • the microstrip line and each group of the microstrip patch unit are connected in a parallel feed mode.
  • the microstrip line is connected to each group of the microstrip patch unit through a serial feed.
  • it further includes: a radio frequency circuit electrically connected to the feeding network, the radio frequency circuit including at least one transmitting chip and two receiving chips, and a function of electrically connecting to the two receiving chips. Divider.
  • the radio frequency circuit is formed on the second side surface of the substrate.
  • a plurality of vias or feeding probes electrically connected to the microstrip lines of each group of the microstrip patch unit are formed on the substrate, and the feeding network passes through A plurality of the vias or feed probes are connected with the radio frequency circuit.
  • a plurality of microstrip lines are further formed on the second side surface of the substrate, and each of the vias or feed probes is connected to the radio frequency through the corresponding microstrip line. Circuit.
  • each group of the microstrip patch unit is electrically connected to the radio frequency circuit through a coupling feeding manner.
  • the radio frequency circuit is formed on the first side surface of the substrate.
  • each group of the microstrip patch unit is connected to the radio frequency circuit through a microstrip line, wherein the feed point is located on the microstrip line on one side or in the middle of the antenna array.
  • the microstrip line and each group of the microstrip patch unit are connected in a vertical manner or an oblique manner.
  • the substrate is a double-layer board, a three-layer board, a four-layer board, a five-layer board, or a six-layer board.
  • the substrate includes:
  • An antenna board, the antenna array is formed on the antenna board;
  • a ground plate located under the antenna plate, for electrical connection with the ground of the antenna array
  • a plurality of wiring boards are located below the ground plate and are used for electrical connection with the radio frequency circuit
  • the antenna board, the ground board and a plurality of the wiring boards are stacked in sequence.
  • the antenna array adopts a horizontal polarization mode or a vertical polarization mode.
  • the second aspect of the present invention provides a microwave rotating radar, which is characterized in that it includes:
  • the motor is installed on the fixed bracket;
  • a rotating bracket installed on the rotor of the motor and rotating with the rotor of the motor;
  • the microwave antenna structure according to the first aspect of the present invention is installed on the rotating bracket.
  • a third aspect of the present invention provides a movable platform, which is characterized in that it includes:
  • a power plant which is installed on the fuselage and provides moving power for the fuselage
  • the microwave rotating radar according to the second aspect of the present invention is installed on the fuselage.
  • the movable platform is an unmanned aerial vehicle, an autonomous vehicle or a ground remote control robot.
  • the invention provides a microwave antenna structure, a microwave rotating radar and a movable platform.
  • the antenna structure adopts a multi-transmit antenna array and a multi-receive antenna array to form a VMIMO antenna array.
  • the transmission channel is controlled by time division or phase modulation to transmit orthogonal signals. , And perform coherent signal processing on the received signal to realize the high-precision angle measurement ability equivalent to doubling the number of receiving antennas; and the transmitting antenna array and the receiving antenna array are arranged side by side, compared with the transmitting antenna array and the receiving antenna array being arranged on the same straight line , Greatly reducing the size of the radar in the angle measurement direction, so that the radar has a better fit.
  • Figure 1 is an equivalent schematic diagram of the antenna of the VMIMO radar
  • FIG. 2 is a schematic diagram of an antenna array of a microwave antenna structure according to an embodiment of the present invention.
  • FIG. 3 is a cross-sectional view of the microwave antenna structure shown in FIG. 1;
  • FIG. 4 is a schematic diagram of the connection between the antenna and the radio frequency device of the microwave antenna structure shown in FIG. 1;
  • Fig. 5 is a schematic cross-sectional view of a microwave rotating radar applying the microwave antenna structure shown in Fig. 1;
  • Fig. 6 is a schematic structural diagram of a movable platform to which the microwave rotating radar shown in Fig. 5 is applied.
  • FIG. 2 is a schematic diagram of an antenna array of a microwave antenna structure according to an embodiment of the present invention
  • FIG. 3 is a cross-sectional view of a microwave antenna structure according to an embodiment of the present invention
  • FIG. 4 is an antenna and a microwave antenna structure according to an embodiment of the present invention Schematic diagram of radio frequency device connection.
  • the microwave antenna structure 100 provided in the embodiment of the present invention includes a substrate 101, and a plurality of antenna arrays are formed on a first side (ie, front) of the substrate 101.
  • the array includes at least 2 transmitting antenna arrays (for example, transmitting antenna arrays 1 and 2) and multiple receiving antenna arrays (for example, receiving antenna arrays 3-10).
  • the plurality of receiving antenna arrays extend along a first direction, and the plurality of receiving antenna arrays are parallel to each other and arranged at intervals. Exemplarily, in this embodiment, there are 8 receiving antenna arrays, and receiving antenna arrays 3-10. Of course, in other embodiments, the number of receiving antenna arrays can also be other numbers as required, for example, 4 receiving antenna arrays or 16 receiving antenna arrays can be used. In this context, that the plurality of receiving antenna arrays extend along the first direction refers to that the plurality of receiving antenna arrays are arranged in sequence along the first direction.
  • At least two of the transmitting antenna arrays extend along a first direction, and at least two of the transmitting antenna arrays are parallel to each other and arranged at intervals.
  • two transmitting antenna arrays, transmitting antenna arrays 1 and 2 are included.
  • the number of transmitting antenna arrays may also be other numbers as required, for example, 3 or 4 transmitting antenna arrays may be used.
  • that at least two of the transmitting antenna arrays extend along the first direction means that at least two of the transmitting antenna arrays are arranged in sequence along the first direction.
  • the distance between adjacent transmitting antenna arrays is equal to n times the distance between adjacent receiving antenna arrays, where n is an integer related to the number of receiving antenna arrays.
  • the distance between the transmitting antenna arrays 1 and 2 is equal to 8 times the distance D between adjacent receiving antenna arrays.
  • the distance D between adjacent receiving antenna arrays refers to the distance between the corresponding sides of the adjacent receiving antenna arrays or the distance between the centers of the adjacent receiving antenna arrays. Taking the microstrip antenna array used in Figure 2 as an example, the distance D between adjacent receiving antenna arrays refers to the distance between the corresponding sides of the microstrip patch of the adjacent receiving antenna array or the center of the microstrip patch distance.
  • the microwave antenna structure 100 of this embodiment uses multiple receiving antenna arrays and at least two transmitting antenna arrays to form a VMIMO antenna array. Therefore, it is possible to control the transmitting channel through time division or phase modulation, transmit orthogonal signals, and perform coherent signals on the received signals. Processing to achieve the high-precision angle measurement capability equivalent to twice the number of receiving antennas. Taking Figure 2 as an example, referring to the principle shown in Figure 1, it can achieve an angle measurement capability equivalent to 16 receiving antenna arrays.
  • the spacing between the transmitting antenna arrays is several times the spacing between the receiving antenna arrays, in order to reduce the size of the microwave antenna structure 100 in the angular measurement direction, in this embodiment, as shown in FIG. 2, at least The two transmitting antenna arrays and the multiple receiving antenna arrays are arranged in parallel in a second direction, and the second direction is perpendicular to the first direction.
  • the first direction is the length direction or the width direction of the substrate.
  • the first direction is the width direction or the longitudinal direction of the substrate 101.
  • the transmitting antenna array and the receiving antenna array are arranged side by side. Compared with the transmitting antenna array and the receiving antenna array are arranged on the same straight line, the size of the radar in the angle measurement direction is greatly reduced, so that the radar has better performance. Adaptability, can be installed in equipment with a smaller space.
  • the transmitting antenna array and the receiving antenna array adopt microstrip antennas.
  • other forms of antennas can also be used.
  • a microstrip antenna is taken as an example to describe the structure of the transmitting antenna array and the receiving antenna array.
  • each antenna array such as a receiving antenna array or a transmitting antenna array, includes a group of microstrip patch units 11 electrically connected to each other.
  • each group of the microstrip patching unit 11 includes 8 microstrip patching units 11. It should be understood that although in this embodiment, each group of the microstrip patch unit 11 includes 8 microstrip patch units 11, in other embodiments of the present invention, each group of the microstrip patch unit 11
  • the number of microstrip patch units 11 included is not limited to 8, and can be more than 8, such as 12, or less than 8, such as 6.
  • each patch unit 11 in each group of microstrip patch unit 11 has the same size and is rectangular.
  • the length A of the microstrip patch unit 11 is 3.1 mm
  • the width B is 4.3 mm, that is, the size of the microstrip patch unit 11 is 3.1*4.3 mm.
  • the distance C between two adjacent microstrip patch units 11 is 7.6 mm.
  • the distance C between two adjacent microstrip patch units 11 refers to the distance between two adjacent microstrip patch units 11 on the same side, for example, it is shown as the left side of two adjacent microstrip patch units 11 in FIG. 2 The distance between the edges.
  • the size of the microstrip patch unit 11 is related to the radiation energy, dielectric constant, etc. of the microstrip patch unit 11.
  • the dimensions disclosed in this embodiment are only exemplary. In other embodiments, the microstrip patch The unit 11 can take various other suitable sizes.
  • the distance D between two adjacent receiving antenna arrays 3-10 determines the angle measurement range of the antenna structure 100, and the distance between two adjacent receiving antenna arrays 3-10 The smaller the D, the larger the angle measurement range, but if the distance is too small, the coupling between the antennas will increase, the gain will decrease, and the pattern will deteriorate.
  • two adjacent receiving antenna arrays 3-10 The distance D between them is 6.0 mm to 15.0 mm.
  • the distance D is 6.2 mm to 12.5 mm. More preferably, the distance D is 6.6 mm.
  • the corresponding angle measurement range is plus or minus 90 degrees
  • the corresponding angle measurement range is plus or minus 70 degrees
  • the distance D is 12.5 mm
  • the corresponding angle measurement range is plus or minus 30 degrees.
  • the substrate 101 includes an antenna plate 102, a ground plate 103, and two wiring plates 104, and a dielectric plate 105 disposed between the antenna plate 102, the ground plate 103, and the multiple wiring plates 104.
  • the antenna board 102, the ground board 103, and a plurality of the wiring boards 104 are stacked in sequence.
  • the antenna array is formed on the antenna board 102, and the antenna board 102 may be formed by etching a conductor patch formed on the first dielectric board 105A.
  • the ground plate 103 is located below the antenna plate 102 and is used for electrical connection with the ground of the antenna array.
  • the ground plate 103 and the antenna plate 102 are separated by a first dielectric plate 105A.
  • the wiring board 104 is located under the ground board 103 and is used for electrical connection with the radio frequency circuit.
  • the wiring board 104 and the grounding plate 103 are separated by a second dielectric plate 105B, and the wiring board 104 is separated by a third dielectric plate 105C.
  • the radio frequency circuit is formed on the second side (ie, the back side) of the substrate 101, that is, on the side of the third dielectric plate 105C or the bottom wiring board in FIG. 2 104 on.
  • the length of the dielectric plate 105 is 92 mm, the width is 87 mm, and the thickness is 32 mils.
  • the dielectric constant of the dielectric plate 105 is 3.6.
  • the substrate 101 includes an antenna plate 102, a ground plate 103 and two wiring boards 104
  • the present invention is not limited to this.
  • the substrate 101 may include one
  • the wiring board 104 may also include more than three wiring boards 104, or may not include the wiring board 104.
  • the number of wiring boards 104 is determined according to the size of the dielectric board 105, the size of the antenna, the radio frequency circuit, and the connection. If the antenna board, radio frequency circuit and wiring can be accommodated on the surface of a dielectric board, the wiring board 104 does not need to be provided at this time. At this time, the radio frequency circuit is formed on the first side surface of the substrate.
  • the substrate 101 of the microwave antenna structure 100 may be a double-layer board (antenna board plus a grounding board), a three-layer board (antenna board, grounding board, and a wiring board). , Four-layer board (antenna board, grounding board and two wiring boards), five-layer board (antenna board, grounding board and three wiring boards) or six-layer board (antenna board, grounding board and four wiring boards) ) And other structures.
  • the microwave antenna structure 100 also includes a feeder network formed on the first side of the substrate 101, and the feeder network includes electrical connections to each group of the microstrip patch unit 11, respectively.
  • the microstrip line 12 is connected to each group of the microstrip patch unit 11 through a serial feed.
  • the feeding points of the receiving antenna array and the transmitting antenna array are located on one side or in the middle of the receiving antenna array or the transmitting antenna array.
  • a microstrip line located on one side or in the middle of the antenna array is connected to the radio frequency network. connection.
  • the receiving antenna array and the transmitting antenna array are directly fed through the microstrip line
  • the power may also be fed through a via hole or a feeding probe.
  • a plurality of vias or feeding probes electrically connected to the microstrip lines 12 of each group of the microstrip patch unit 11 may be formed on the substrate 101, and the feeding network may pass through the plurality of vias or The feeding probe is connected to the radio frequency circuit, or each group of the microstrip patch unit 11 is electrically connected to the radio frequency circuit through a coupling feeding manner.
  • a plurality of microstrip lines are also formed on the second side surface of the substrate, and each of the vias or feed probes is connected to the radio frequency circuit through the corresponding microstrip line.
  • each group of microstrip patch units adopts the serial feed mode
  • the parallel feed mode can also be adopted.
  • each microstrip patch unit in each group of the microstrip patch unit The units are leveled in parallel on a microstrip line, and the microstrip line is connected to each group of the microstrip patch unit in a vertical manner or an oblique manner.
  • the microwave antenna structure 100 provided by this embodiment further includes a radio frequency circuit electrically connected to the feed network.
  • the radio frequency circuit includes one transmitting chip 20 and two receiving chips 21, and two The receiving chip 21 is electrically connected to a power divider 22.
  • the transmitting chip 20 is electrically connected to the transmitting antennas TX1 and TX2, and the receiving chip 21 is electrically connected to the receiving antenna RX (RX1-8).
  • each receiving chip 21 is connected to four receiving antennas, that is, the first receiving chip 21 is connected to the receiving antennas RX1, RX2, RX3, and RX4, and the second receiving chip 21 is connected to the receiving antennas RX5, RX6, and RX7. Connect with RX8.
  • the power divider 22 is used for the receiving chip 21 to receive the radiant energy to synthesize one output. It should be understood that the number of transmitting chips 20, receiving chips 21, and power dividers 22 is related to the number of transmitting antennas and receiving antennas, and is not limited to the number shown in FIG. 3.
  • the transmitting chip 20, the receiving chip 21, and the power divider 22 may adopt various suitable chips.
  • the power divider 22 may adopt a Wilkinson power divider.
  • the microwave antenna structure 100 provided in this embodiment adopts a horizontal polarization mode, while other scenarios that pay more attention to vertical targets.
  • the microwave antenna structure 100 provided in this embodiment uses a vertical polarization mode.
  • the microwave antenna structure 100 provided in this embodiment adopts a microstrip array antenna, it occupies a small space, has a relatively simple structure, reduces costs, and can have a larger angle measurement range, higher angle measurement resolution, gain, and beam width. Both the side lobes can meet the actual needs of use.
  • microwave antenna structure of the present invention is only an exemplary description of the microwave antenna structure of the present invention, and the microwave antenna structure according to the present invention may also adopt various structures similar to the foregoing principles.
  • Fig. 5 is a schematic cross-sectional view of a microwave rotating radar according to an embodiment of the present invention.
  • the microwave rotating radar 200 includes a cover 201, a fixed bracket 202 is provided in the cover 201, and a motor is installed on the fixed bracket 202.
  • the motor includes a stator 203 and a rotor 204.
  • a rotating bracket 205 is installed on the rotor 204, and the rotating bracket 205 rotates with the rotor 204 of the motor; a microwave antenna structure 206 and an antenna controller 207 are installed on the rotating bracket 205.
  • the specific structure of the microwave antenna structure 206 is as before As described, the antenna controller 207 is used to control the microwave antenna structure 206 to transmit and receive microwave signals.
  • the microwave rotation radar 200 further includes an angle sensor 208, and the angle sensor 208 is used to detect the rotation angle of the rotor 204.
  • the angle sensor 208 may be one or more of a Hall sensor, a potentiometer, and an encoder. It can be understood that the angle sensor 208 detects the rotation angle of the rotor 204, that is, detects the rotation angle of the microwave rotating radar 200.
  • the device using the microwave rotating radar 200 can assist in determining the transmission direction of the microwave signal and the direction of the received microwave signal according to the rotation angle of the microwave rotating radar 200, and further determine the relative direction of the obstacle and the device using the microwave rotating radar 200 .
  • Fig. 6 is a schematic block diagram of a movable platform according to an embodiment of the present invention.
  • the movable platform 300 is depicted as an unmanned aerial vehicle, this depiction is not intended to be limiting, and any suitable type of movable object may be used.
  • the movable platform 300 may be a drone or an autonomous vehicle. Or ground remote control robot.
  • the movable platform 300 includes a fuselage 301 and a microwave rotating radar 200, and the microwave rotating radar 200 is installed on the fuselage 301.
  • the body 301 includes a frame 302 and a stand 303 installed on the frame 302.
  • the frame 302 can be used as an installation carrier for the flight control system, processor, video camera, camera, etc. of the movable platform 300.
  • the tripod 303 is installed under the frame 302, and the microwave rotary radar 200 is installed on the tripod 303.
  • the tripod 303 can be used to provide support for the movable platform 300 when it is landed.
  • the tripod 303 can also carry a water tank and be used to spray pesticides and fertilizers on plants through a nozzle.
  • the structure of the microwave rotating radar 200 is as described above, and will not be repeated here.
  • the movable platform 300 further includes an arm 304 extending from the fuselage 301, and the arm 304 can be used to carry a power device 305 to provide the movable platform 300 with flying power.
  • the powered device 305 may include one or more of a rotor, a propeller, a blade, an engine, a motor, a wheel, a axle, a magnet, or a nozzle.
  • the movable platform 300 may have one or more, two or more, three or more, or four or more powered devices 305 onboard.
  • the power devices 305 may all be of the same type. Alternatively, the one or more power devices 305 may be different types of power devices 305.
  • the power device 305 can be installed on the movable platform 300 using any suitable device.
  • the disclosed device and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another device, or some features can be ignored or not implemented.
  • the various component embodiments of the present invention may be implemented by hardware, or by software modules running on one or more processors, or by a combination of them.
  • a microprocessor or a digital signal processor (DSP) may be used in practice to implement some or all of the functions of some modules according to the embodiments of the present invention.
  • DSP digital signal processor
  • the present invention can also be implemented as a device program (for example, a computer program and a computer program product) for executing part or all of the methods described herein.
  • Such a program for realizing the present invention may be stored on a computer-readable medium, or may have the form of one or more signals.
  • Such a signal can be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Aerials (AREA)

Abstract

La présente invention concerne une structure d'antenne à micro-ondes (100), un radar rotatif à micro-ondes (200), et une plate-forme mobile (300). La structure d'antenne à micro-ondes (100) comprend une plaque de base (101). De multiples réseaux d'antennes sont disposés sur une première surface latérale de la plaque de base (101), et comprennent au moins deux réseaux d'antennes de transmission (1, 2) et de multiples réseaux d'antennes de réception (3-9). Les deux, ou plus, réseaux d'antennes de transmission (1, 2) et les multiples réseaux d'antennes de réception (3-9) s'étendent dans une première direction, et sont agencés en parallèle dans une seconde direction perpendiculaire à la première direction. La structure d'antenne à micro-ondes (100), le radar rotatif à micro-ondes (200), et la plate-forme mobile (300) de la présente invention permettent aux réseaux d'antennes de transmission et aux réseaux d'antennes de réception d'être agencés de manière logique, afin de fournir un radar compact à faible coût capable d'effectuer une mesure d'angle de haute précision.
PCT/CN2019/114762 2019-10-31 2019-10-31 Structure d'antenne à micro-ondes, radar rotatif à micro-ondes et plateforme mobile WO2021081904A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/CN2019/114762 WO2021081904A1 (fr) 2019-10-31 2019-10-31 Structure d'antenne à micro-ondes, radar rotatif à micro-ondes et plateforme mobile
CN201980039407.6A CN112368590A (zh) 2019-10-31 2019-10-31 微波天线结构、微波旋转雷达及可移动平台

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Application Number Priority Date Filing Date Title
PCT/CN2019/114762 WO2021081904A1 (fr) 2019-10-31 2019-10-31 Structure d'antenne à micro-ondes, radar rotatif à micro-ondes et plateforme mobile

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WO2021081904A1 true WO2021081904A1 (fr) 2021-05-06

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CN113777609A (zh) * 2021-08-27 2021-12-10 深圳市道通智能汽车有限公司 一种雷达及无人机

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