CN111180866B - Array antenna arrangement and automobile angle radar - Google Patents

Array antenna arrangement and automobile angle radar Download PDF

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Publication number
CN111180866B
CN111180866B CN201911419053.6A CN201911419053A CN111180866B CN 111180866 B CN111180866 B CN 111180866B CN 201911419053 A CN201911419053 A CN 201911419053A CN 111180866 B CN111180866 B CN 111180866B
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wave
automobile
car
antennas
transmitting antennas
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CN111180866A (en
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颜福才
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Freetech Intelligent Systems Co Ltd
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Freetech Intelligent Systems Co Ltd
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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
    • 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
    • G01S7/023—Interference mitigation, e.g. reducing or avoiding non-intentional interference with other HF-transmitters, base station transmitters for mobile communication or other radar systems, e.g. using electro-magnetic interference [EMI] reduction techniques
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path

Abstract

The invention discloses an array antenna arrangement and an automobile angle radar, wherein the array antenna arrangement comprises m transmitting antennas arranged along the transverse direction and n receiving antennas arranged along the transverse direction: the distance between the adjacent transmitting antennas along the transverse center is d, wherein m is an integer larger than 2, n is an integer larger than 1, d is larger than 0.4 times of the working wavelength of the antennas, the transmitting antennas form k wave positions, the wave beam direction of each wave position is different, the k wave positions are scanned for i times, k is an integer larger than or equal to 2, and i is an integer larger than 0, so that the problems that the wave positions of the antennas cannot be scanned in a self-adaptive mode and the utilization rate of the antennas is low are solved, the utilization rate of the transmitting antennas in the automobile angle radar is improved, and the cost of the automobile angle radar is reduced.

Description

Array antenna arrangement and automobile angle radar
Technical Field
The application relates to the technical field of automobile radars, in particular to array antenna arrangement and an automobile angle radar.
Background
With the rapid development of intelligent Driving technology, Advanced Driving Assistance System (ADAS) becomes an indispensable part in an intelligent Driving automobile, and the ADAS senses the surrounding environment at any time in the Driving process of the automobile through various sensors mounted on the automobile, collects environmental data, identifies, detects and tracks static or dynamic objects, and performs System operation and analysis by combining with navigator map data, thereby predicting possible dangers and effectively increasing the comfort and safety of automobile Driving. The millimeter wave radar is a main sensor of ADAS due to long detection distance, small influence from the environment, low cost and mature technology, the existing millimeter wave radar of the automobile is generally a Multiple Input Multiple Output (MIMO) antenna, in the related technology, one wave position of the millimeter wave radar covers the whole Field of View (Field of View, FOV for short), adaptive scanning cannot be performed, and the utilization rate of the millimeter wave radar antenna is low.
Aiming at the problems that in the related art, one wave position of a millimeter wave radar can cover the whole FOV, self-adaptive scanning cannot be carried out, and the utilization rate of an antenna is low, an effective solution is not provided at present.
Disclosure of Invention
The invention provides array antenna arrangement and an automobile angle radar, aiming at solving the problems that in the related art, one wave position of a millimeter wave radar can cover the whole FOV, self-adaptive scanning cannot be carried out, and the antenna utilization rate is low.
According to an aspect of the present invention, there is provided an array antenna arrangement including m transmission antennas arranged in a lateral direction and n reception antennas arranged in the lateral direction: the distance between the centers of the adjacent transmitting antennas along the transverse direction is d, wherein m is an integer larger than 2, n is an integer larger than 1, and d is larger than 0.4 time of the working wavelength of the antenna;
the transmitting antenna forms k wave positions, the wave beam direction of each wave position is different, the k wave positions are divided into i times for scanning, wherein k is an integer larger than or equal to 2, and i is an integer larger than 0.
In one embodiment, the beam direction of the wave position is set according to the initial phase of the transmitting antenna.
In one embodiment, the initial phase of the transmitting antenna is greater than or equal to 0 and less than or equal to 360 °, and the initial phase is adjusted by 360 °/2bWherein b is an integer greater than 2.
In one embodiment, each of the wave bits is formed by at least 2 transmit antennas transmitting.
In one embodiment, each of the receiving antennas is an independent sampling digitizing antenna.
In one embodiment, in the n receiving antennas, a center-to-center distance between at least one receiving antenna and other receiving antennas in the longitudinal direction is not 0, and a center-to-center distance between adjacent receiving antennas in the transverse direction is md.
In one embodiment, m has a value of 3 or 4, n has a value of 4, k has a value of 3 or 4, and i has a value of 1 or 2.
According to another aspect of the present invention, there is provided an automobile angle radar comprising an array antenna arrangement: the array antenna arrangement comprises m transmitting antennas arranged along the transverse direction and n receiving antennas arranged along the transverse direction: the distance between the centers of the adjacent transmitting antennas along the transverse direction is d, wherein m is an integer larger than 2, n is an integer larger than 1, and d is larger than 0.4 time of the working wavelength of the antenna;
the transmitting antenna forms k wave positions, the wave beam direction of each wave position is different, the k wave positions are divided into i times for scanning, wherein k is an integer larger than or equal to 2, and i is an integer larger than 0.
In one embodiment, the car angle radar is mounted at a corner in the front direction or a corner in the rear direction of the car:
under the condition that the automobile angle radar is installed at a corner in the front direction of the automobile, at least one wave position is parallel to the front direction of the automobile and faces the outer side of the automobile body, and at least one wave position is obliquely arranged with the front direction of the automobile and faces the outer side of the automobile body;
when the automobile angle radar is installed at a corner in the vehicle rear direction, at least one wave position is parallel to the vehicle rear direction and faces the outer side of the vehicle body, and at least one wave position is inclined to the vehicle rear direction and faces the outer side of the vehicle body.
In one embodiment, the car angle radar is mounted at a corner in the front direction or a corner in the rear direction of the car:
under the condition that the automobile angle radar is installed at a corner in the front direction of the automobile, at least one wave position is parallel to the front direction of the automobile and faces the outer side of the automobile body, and at least one wave position is perpendicular to the front direction of the automobile and faces the outer side of the automobile body;
when the car angle radar is installed at a corner of the car rear direction, at least one of the wave positions is parallel to the car rear direction and faces the outside of the car body, and at least one of the wave positions is perpendicular to the car rear direction and faces the outside of the car body.
By the invention, the array antenna arrangement comprises m transmitting antennas arranged along the transverse direction and n receiving antennas arranged along the transverse direction: the distance between the adjacent transmitting antennas along the transverse center is d, wherein m is an integer larger than 2, n is an integer larger than 1, d is larger than 0.4 times of the working wavelength of the antennas, the transmitting antennas form k wave positions, the wave beam direction of each wave position is different, the k wave positions are scanned for i times, k is an integer larger than or equal to 2, and i is an integer larger than 0, so that the problems that the wave positions of the antennas cannot be scanned in a self-adaptive mode and the utilization rate of the antennas is low are solved, the utilization rate of the transmitting antennas in the automobile angle radar is improved, and the cost of the automobile angle radar is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention to a proper form.
In the drawings:
fig. 1 is a schematic diagram of an application environment of array antenna arrangement according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an array antenna arrangement according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of radar wave position coverage angles according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a car angle radar mounted in a front direction of a car according to an embodiment of the present invention;
fig. 5 is a schematic view of a car angle radar installed in a rear direction of a car according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It should be noted that the terms "first", "second" and "third" related to the embodiments of the present invention only distinguish similar objects, and do not represent specific ordering for the objects, and the terms "first", "second" and "third" may be interchanged with specific order or sequence, where permitted. It is to be understood that the terms "first," "second," and "third" are used interchangeably where appropriate to enable embodiments of the present invention described herein to be practiced in sequences other than those illustrated or described herein.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The array antenna array provided by the present application can be applied to an application environment shown in fig. 1, fig. 1 is a schematic view of an application environment of the array antenna array according to an embodiment of the present invention, as shown in fig. 1, the array antenna array in the present application can be applied to a millimeter wave radar 102 of an automobile 104, the millimeter wave radar 102 is installed on the automobile 104, the millimeter wave radar 102 transmits an electromagnetic wave and receives an echo of the electromagnetic wave, position data of an induction target is measured according to a time difference between transmission and reception, and the millimeter wave radar 102 can induce an object located in a preset region, for example, in the present embodiment, the millimeter wave radar 102 is installed at one corner of the automobile 104, and the millimeter wave radar 102 has 3 wave bits, each wave bit corresponds to a different scanning region, and the 3 wave bits exist in a time-sharing manner, thereby implementing adaptive scanning.
In an embodiment, an array antenna arrangement is provided, and fig. 2 is a schematic diagram of an array antenna arrangement according to an embodiment of the present invention, where the array antenna arrangement may include m transmitting antennas arranged in a transverse direction, n receiving antennas arranged in the transverse direction, and a chip 20: the center distance between adjacent transmitting antennas along the transverse direction is d, wherein m is an integer greater than 2, n is an integer greater than 1, d is greater than 0.4 times of the operating wavelength of the antenna, and the transmitting antennas and the receiving antennas are respectively electrically connected with the chip 20: the transmitting antenna forms k wave positions, the wave beam direction of each wave position is different, the k wave positions are divided into i times for scanning, wherein k is an integer greater than or equal to 2, i is an integer greater than 0, and the k wave positions are arranged along the direction of an arrow a shown in fig. 2 along the transverse direction. For example, in the case where k has a value of 4, the array antenna array has 4 wave bits, and the 4 wave bits can be divided into 2 scans, each scan having 2 wave bits.
In the embodiment, different scanning wave positions are formed through the transmitting antenna, the scanning wave positions have different directions and scanning areas, and the wave positions are divided into multiple times for scanning, so that the problem that in the related art, the utilization rate of the antenna is low because the antenna wave positions are fixedly arranged and cannot be subjected to self-adaptive scanning, is solved, the utilization rate of the transmitting antenna in the automobile angle radar is improved, and the cost of the automobile angle radar is reduced.
In one embodiment, the beam direction of the wave position is set according to the initial phase of the transmitting antenna, different inclination angles can be presented between an automobile angle radar and the driving direction of an automobile due to difference of installation precision in the installation process, and the beam direction of the wave position can be ensured to be parallel to the driving direction of the automobile by setting the initial phase of the transmitting antenna, so that the scanning of a target in front of the automobile is facilitated, and the driving safety of the automobile is improved.
In one embodiment, the initial phase of the transmit antenna is greater than or equal to 0 and less than or equal to 360, and the initial phase is adjusted in steps of 360/2bAnd b is an integer greater than 2. The initial phase can be set and adjusted according to the installation angle of the automobile angle radar, the adjustment step is the interval of each adjustment of the initial phase, for example, in the case that the value of b is 6, the adjustment step is 5.625 degrees, then the initial phase of the transmitting antenna can be adjusted by 5.625 degrees, and the staff can adjust the initial phase by adjusting the stepThe initial phase is accurately set, which is beneficial to adjusting the wave position of the antenna to be consistent with the preset direction.
In one embodiment, b is an integer greater than 2. In the process of adjusting the initial phase of the transmitting antenna, the setting of the adjusting step is related to the adjusting precision of the initial phase, under the condition that the value of b is 2, the adjusting step is 90 degrees, the initial phase can change 90 degrees every time, the angle of each change of the initial phase is smaller and smaller along with the larger value of b, and the adjusting precision of wave position pointing is improved.
In one embodiment, each wave bit is formed by at least 2 transmit antennas transmitting. The total power of the transmitting antennas can be adjusted by adjusting the number of the transmitting antennas, so that the purpose of reducing side lobes is achieved, and the resolution of the transmitting antennas is improved.
In one embodiment, each receiving antenna is an independent sampling digitizing antenna, and each receiving antenna can be connected with an analog-to-digital converter for sampling and signal conversion of signals received by the receiving antenna. In the embodiment, independent sampling and signal processing of the receiving antennas are realized, the receiving antennas do not interfere with each other in the working process, the received signals can be processed in time, and compared with the related art, all the receiving antennas share one analog-to-digital converter, and the working efficiency of the receiving antennas is improved.
In one embodiment, m has a value of 3 or 4, n has a value of 4, k has a value of 3 or 4, and i has a value of 1 or 2. In the related art, the antenna chip is mostly a chip with 3 sending and 4 receiving or a chip with 4 sending and 4 receiving, so that the number of the transmitting antennas is 3 or 4, and the number of the receiving antennas is 4, so that the antenna chip can be better matched with the antenna chip, the extra cost brought by redevelopment of the chip is reduced, and the production cost of the antenna is reduced.
In one embodiment, as shown in fig. 2, the 4-transmit and 4-receive antenna is a transmit antenna, which includes TX1, TX2, TX3 and TX4, and a receive antenna RX1, RX2, RX3 and RX 4. The transmitting antenna can be provided with 3 wave positions or 4 wave positions, which is favorable for the wave positions to cover the periphery of the automobile, the value of i is 1 or 2, so that the car angle radar can complete all the wave position scans in a relatively fast time period, e.g., in case of a value of 3 for k, the automobile angle radar comprises three wave positions, wherein a wave position I covers-75 degrees to-10 degrees, a wave position II covers-20 degrees to 50 degrees, fig. 3 is a schematic diagram of the coverage angle of radar wave positions according to the embodiment of the invention, as shown in fig. 3, the arrow indicates that the radar is facing the front, the left side of the right front is a negative angle marked as-theta, the right side is a positive angle marked as theta, a wave position I and a wave position II store echo information within 80 meters, a wave position III covers 5-75 degrees, a wave position III stores echo information within 200 meters, and the wave position I, the wave position II and the wave position III alternately and sequentially cover to form a primary scanning frame; in the case that k has a value of 4 and i has a value of 2, the car angle radar has 4 wave bits and scans twice, and the car angle radar can complete scanning of all the wave bits after scanning twice.
In one embodiment, in the n receiving antennas, the center-to-center distance between at least one receiving antenna and other receiving antennas in the longitudinal direction is not 0, the center-to-center distance between adjacent receiving antennas in the transverse direction is md, the ambiguity multiple of the receiving antenna array is m, there are m possible angles in the target angle direction, and in the ambiguity resolution process, the larger the ambiguity multiple is, the more difficult the ambiguity resolution is, and the smaller the ambiguity multiple is, the lower the resolution of the antenna is. The distance between the centers of the antennas along the transverse direction is set to be the maximum multiple which can just solve the ambiguity, and under the condition that the distance between the centers of the transmitting antennas along the transverse direction is the integral multiple of half-wavelength, the main lobe of the antenna which is transmitted by m transmitting antennas simultaneously is 180/m, so that the ambiguity of m times can just be solved. As shown in fig. 2, the center-to-center distances in the longitudinal direction of the receiving antennas RX1, RX2 and RX3 are 0, and the center-to-center distances in the longitudinal direction of the receiving antennas RX4 and the receiving antennas RX1, RX2 and RX3 are not 0, wherein the longitudinal distance is in the direction of arrow b shown in fig. 2, and since the center-to-center distances in the longitudinal direction of the RX4 and the other receiving antennas are not 0, the antenna array formed by the transmitting antennas and the receiving antennas can realize side pitching.
In one embodiment, the invention also provides an automotive angle radar comprising an array antenna arrangement: the array antenna array comprises m transmitting antennas arranged along the transverse direction and n receiving antennas arranged along the transverse direction: the center distance between adjacent transmitting antennas along the transverse direction is d, wherein m is an integer larger than 2, n is an integer larger than 1, d is larger than 0.4 times of the working wavelength of the antennas, the transmitting antennas form k wave positions, the wave beam direction of each wave position is different, and the k wave positions are divided into i times for scanning, wherein k is an integer larger than or equal to 2, and i is an integer larger than 0. Wherein the arrangement in the lateral direction is in the direction of arrow a shown in fig. 2. For example, in the case where k has a value of 4, the array antenna array has 4 wave bits, and the 4 wave bits can be divided into 2 scans, each scan having 2 wave bits.
In the embodiment, different scanning wave positions are formed through the transmitting antenna, the scanning wave positions have different directions and scanning areas, and the wave positions are divided into multiple times for scanning, so that the problem that in the related art, the utilization rate of the antenna is low because the antenna wave positions are fixedly arranged and cannot be subjected to self-adaptive scanning, is solved, the utilization rate of the transmitting antenna in the automobile angle radar is improved, and the cost of the automobile angle radar is reduced.
In one embodiment, fig. 4 is a schematic diagram of a car angle radar installed in a front direction of a car according to an embodiment of the present invention, and as shown in fig. 4, the car angle radar 102 is installed at a corner of a car 104 in the front direction: when the car angle radar 102 is mounted at a corner in the front direction of the car, at least one wave position is parallel to the front direction of the car and faces the outside of the car body, and at least one wave position is inclined to the front direction of the car and faces the outside of the car body, wherein the front direction of the car is the direction indicated by an arrow x in the figure. In the embodiment, the car angle radar 102 is installed at a corner of a car 104 in the front direction, the car angle radar 102 has 4 wave positions, namely wave positions k1, k2, k3 and k4, wherein the wave position k1 is the wave position covering the front direction of the car, the detection distance of the wave position k1 is more than 140 meters, the car angle radar is not influenced by the installation angle of the car angle radar 102, the wave position orientation can be set through the initial phase of a transmitting antenna, the orientation of the wave positions k2, k3 and k4 are all obliquely arranged with the front direction of the car, and the wave position k4 covers the side surface of the car and is also not influenced by the installation angle. The wave positions k1, k2, k3 and k4 are superposed together and can cover the directions theta 1-theta 2 of the radar, and theta 1 and theta 2 are larger than 40 degrees.
In one embodiment, fig. 5 is a schematic diagram of a car angle radar installed in a rear direction of a car according to an embodiment of the present invention, and as shown in fig. 5, the car angle radar 102 is installed at a corner of a rear direction of a car 104: in the case where the car angle radar 102 is installed at a corner in the vehicle rear direction, at least one wave site is parallel to the vehicle rear direction, and at least one wave site is inclined to the vehicle rear direction and faces the outside of the vehicle body, where the vehicle rear direction is the direction indicated by the arrow y in the drawing. The automobile angle radar 102 has 4 wave positions which are respectively the wave positions k5, k6, k7 and k8, wherein the wave position k5 is the wave position covering the rear direction of the automobile, the detection distance of the wave position k5 is more than 140 meters, the influence of the installation angle of the automobile angle radar 102 is avoided, the wave position direction can be set through the initial phase of a transmitting antenna, the directions of the wave positions k6, k7 and k8 are all obliquely arranged with the rear direction of the automobile, and the wave position k8 covers the side face of the automobile and is also not influenced by the installation angle.
In one embodiment, in the case where the car angle radar is installed at a corner in the front direction of the car, at least one wave level is parallel to the front direction of the car and faces the outside of the car body, and at least one wave level is perpendicular to the front direction of the car and faces the outside of the car body. The wave level parallel to the front direction of the vehicle is shown as wave level k1 in fig. 4, the wave level perpendicular to the front direction of the vehicle and facing the outer side of the vehicle body is shown as wave level k4 in fig. 4, and the wave level k4 is perpendicular to the front direction of the vehicle, so that targets in a farther range can be detected.
In one embodiment, in the case where the car angle radar is installed at a corner in the vehicle rear direction, at least one wave site is parallel to the vehicle rear direction and faces the vehicle body outside, and at least one wave site is perpendicular to the vehicle rear direction and faces the vehicle body outside. Wherein the wave level parallel to the vehicle rear direction is shown as wave level k5 in fig. 5, the wave level perpendicular to the vehicle rear direction and toward the vehicle body outer side is shown as wave level k8 in fig. 5, and the wave level k8 is arranged perpendicular to the vehicle rear direction, and it is possible to detect an object in a further range.
In one embodiment, the wave bits point to wave bits parallel to the front direction of the vehicle or parallel to the rear direction of the vehicle, the target information of the wave bit coverage within 200 meters can be stored, the wave bits point to wave bits covering the side of the vehicle, the target information of the wave bit coverage within 100 meters can be stored, and the rest of the wave bits can store the target information of the wave bit coverage within 80 meters.
The automobile angle radar provided by the embodiment can simultaneously distinguish a large target and a small target which have the same distance and the same speed as an automobile. For example, for a car and a bicycle located ten meters away from the antenna in a certain direction of the antenna, the car is a large target in the angular dimension, and the bicycle is a small target in the angular dimension. When the large target and the small target are in different wave positions, the large target and the small target are distinguished through different wave positions, and when the large target and the small target are in the same wave position, the large target and the small target are distinguished through Digital Beam Forming (DBF) spectrum in the wave positions, and the Radar Cross Section (RCS) of the large target is larger than that of the small target. RCS is a physical quantity that characterizes the intensity of the echo generated by a target under the irradiation of radar waves and is the ratio of the return scattered power in a unit solid angle in the incident direction of radar to the power density of the target section.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (9)

1. An array antenna array, comprising m transmitting antennas arranged in a transverse direction and n receiving antennas arranged in the transverse direction: the center distance between the adjacent transmitting antennas along the transverse direction is d, wherein m is an integer larger than 2, and n isAn integer greater than 1, d is greater than 0.4 times the operating wavelength of the transmitting antenna; the initial phase of the transmitting antenna is greater than or equal to 0 and less than or equal to 360 degrees, and the adjustment of the initial phase is stepped to 360 degrees/2bWherein b is an integer greater than 2;
the transmitting antennas form k wave positions, the wave beam direction of each wave position is different, the k wave positions are divided into i times for scanning, the direction of the wave positions can be set through the initial phase of the transmitting antennas, the total power of the transmitting antennas can be adjusted by adjusting the number of the transmitting antennas, k is an integer larger than or equal to 2, and i is an integer larger than 0.
2. The array antenna arrangement according to claim 1, wherein the beam direction of the wave location is set according to an initial phase of the transmitting antenna.
3. The array antenna arrangement according to claim 1, wherein each of the wave bits is formed by at least 2 transmit antenna transmissions.
4. The array antenna arrangement according to claim 1, wherein each of the receive antennas is an independently sampled digitised antenna.
5. The array antenna arrangement according to claim 1, wherein, among the n reception antennas, at least one reception antenna is not centered at 0 in a longitudinal direction from the other reception antennas, and adjacent reception antennas are centered at md in the transverse direction.
6. The array antenna array according to claim 1, characterized in that m has a value of 3 or 4, n has a value of 4, k has a value of 3 or 4, and i has a value of 1 or 2.
7. An automotive angle radar, comprising an array antenna arrangement: the array antenna arrangement comprisesM transmitting antennas arranged and n receiving antennas arranged along the transverse direction: the distance between the centers of the adjacent transmitting antennas along the transverse direction is d, wherein m is an integer larger than 2, n is an integer larger than 1, and d is larger than 0.4 time of the working wavelength of the transmitting antennas; the initial phase of the transmitting antenna is greater than or equal to 0 and less than or equal to 360 degrees, and the adjustment of the initial phase is stepped to 360 degrees/2bWherein b is an integer greater than 2;
the transmitting antennas form k wave positions, the wave beam direction of each wave position is different, the k wave positions are divided into i times for scanning, the direction of the wave positions can be set through the initial phase of the transmitting antennas, the total power of the transmitting antennas can be adjusted by adjusting the number of the transmitting antennas, k is an integer larger than or equal to 2, and i is an integer larger than 0.
8. The car angle radar of claim 7, wherein the car angle radar is installed at a corner of a front direction or a corner of a rear direction of a car:
under the condition that the automobile angle radar is installed at a corner in the front direction of the automobile, at least one wave position is parallel to the front direction of the automobile and faces the outer side of the automobile body, and at least one wave position is obliquely arranged with the front direction of the automobile and faces the outer side of the automobile body;
when the automobile angle radar is installed at a corner in the vehicle rear direction, at least one wave position is parallel to the vehicle rear direction and faces the outer side of the vehicle body, and at least one wave position is inclined to the vehicle rear direction and faces the outer side of the vehicle body.
9. The car angle radar of claim 7, wherein the car angle radar is installed at a corner of a front direction or a corner of a rear direction of a car:
under the condition that the automobile angle radar is installed at a corner in the front direction of the automobile, at least one wave position is parallel to the front direction of the automobile and faces the outer side of the automobile body, and at least one wave position is perpendicular to the front direction of the automobile and faces the outer side of the automobile body;
when the car angle radar is installed at a corner of the car rear direction, at least one of the wave positions is parallel to the car rear direction and faces the outside of the car body, and at least one of the wave positions is perpendicular to the car rear direction and faces the outside of the car body.
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