EP2478387A1 - Dispositif détecteur de radar muni d'au moins un agencement d'antennes planaire - Google Patents

Dispositif détecteur de radar muni d'au moins un agencement d'antennes planaire

Info

Publication number
EP2478387A1
EP2478387A1 EP10731761A EP10731761A EP2478387A1 EP 2478387 A1 EP2478387 A1 EP 2478387A1 EP 10731761 A EP10731761 A EP 10731761A EP 10731761 A EP10731761 A EP 10731761A EP 2478387 A1 EP2478387 A1 EP 2478387A1
Authority
EP
European Patent Office
Prior art keywords
antenna
radar sensor
columns
sensor device
antenna columns
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
EP10731761A
Other languages
German (de)
English (en)
Inventor
Volker Gross
Goetz Kuehnle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2478387A1 publication Critical patent/EP2478387A1/fr
Ceased legal-status Critical Current

Links

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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • 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
    • H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
    • H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
    • 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
    • H01Q21/061—Two dimensional planar arrays
    • H01Q21/065—Patch antenna array
    • 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
    • H01Q21/22—Antenna units of the array energised non-uniformly in amplitude or phase, e.g. tapered array or binomial array
    • 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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/93185—Controlling the brakes
    • 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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9321—Velocity regulation, e.g. cruise control
    • 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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9327—Sensor installation details
    • G01S2013/93271—Sensor installation details in the front of the vehicles

Definitions

  • Radar sensor device with at least one planar antenna device The invention relates to a radar sensor device having at least one planar one
  • Antenna device which has a plurality of vertically aligned and as a thinned array in a plane parallel to each other at certain distances arranged antenna columns, each having at least two line-fed patch elements. Furthermore, the invention relates to a device, in particular a driver assistance system of a motor vehicle.
  • radar sensors are increasingly being used to detect the traffic environment in the context of driver assistance systems, for example for radar-assisted distance control (Adaptive Cruise Control Systems / ACC).
  • Adaptive Cruise Control Systems / ACC Such a cruise control system is known for example from Robert Bosch GmbH, "Adaptive cruise control ACC", yellow series, edition 2002, technical briefing.
  • planar antenna devices or patch antennas are particularly suitable for use in the aforementioned radar sensors.
  • antennas In such antennas is a planar array of radiating resonators (antenna elements or patch elements / patches), which are each assigned a defined amplitude and phase.
  • the superimposition of the radiation patterns of the individual patch elements yields the resulting radiation pattern of the antenna, the lines being responsible for the characteristic of the azimuth and the columns for the characteristic of the elevation.
  • the antenna elements are usually arranged in vertically oriented antenna columns.
  • Many radar sensors with the use of the environment detection in the automotive sector use such planar antenna concepts.
  • One advantage of the planar antenna concepts is the resulting low installation depth of the radar sensors.
  • Wavelength in air ( ⁇ / 2) is located.
  • the antenna aperture is the deciding factor. The larger the antenna aperture, the better the angular accuracy. If the antenna aperture is provided with a uniform linear array structure as in the previously known radar sensors, then a large number of mixers is required, which leads to increased overall sensor costs.
  • DE 100 36 131 A1 proposes a radar sensor for detecting the traffic situation in the vicinity of a motor vehicle with a carrier element, with an array of patch antennas in the form of a combination of a filled subarray of patch antennas and a thinned subarray of patch antennas. However, the patch antennas are redundant, d. H. the signal relationships are measured several times.
  • a radar sensor device is provided with at least one planar antenna device, which has a plurality of vertically aligned and as a thinned array in a plane parallel to one another at specific distances from each other.
  • MRA minimum redundancy arrays
  • the determined distances of the antenna columns from each other can each be an integer multiple of a constant basic distance. It is advantageous if the constant basic distance is less than or equal to half the wavelength in air. Then there is a uniqueness for the range of +/- 90 degrees.
  • a device in particular a driver assistance system of a motor vehicle is specified in claim 4.
  • An exemplary embodiment of the invention is described in principle below with reference to the drawing. Show it:
  • Figure 1 is a schematic representation of the essential components of a
  • Figure 2 is a schematic representation of an array of planar antenna device with four antenna columns according to the prior art
  • FIG. 3 shows a schematic representation of an array of a planar antenna device with three antenna columns for a first embodiment of the radar sensor device according to the invention.
  • Figure 4 is a schematic representation of an array of planar antenna device with four antenna columns for a second embodiment of the radar sensor device according to the invention.
  • a motor vehicle 10 shown in FIG. 1 with an adaptive cruise control device 11 as a driver assistance system has as an object detection sensor a radar sensor device 12 mounted on the front end of the motor vehicle 10, in whose housing a control device 14 of the adaptive cruise control device 11 is accommodated.
  • the radar sensor device 12 is used to detect objects in an environment of the motor vehicle 10.
  • the radar sensor device 12 is connected to the control device 14.
  • the control device 14 is connected via a data bus 16 (CAN, MOST, or the like) to an electronic drive control unit 18, a brake system control unit 20 and to an HMI control unit 22 of a human / machine interface.
  • the control unit 14 and the HMI control unit 22 may also be integrated in a control device of the adaptive cruise control device 12, in particular in a common housing.
  • the radar sensor device 12 uses a multi-beam radar to measure the distances, relative speeds and azimuth angles of objects located in front of the motor vehicle 10 which reflect radar waves.
  • the raw data received at regular time intervals, for example every 10 ms, are evaluated in the control device 14 in order to identify and track individual objects and, in particular, to recognize a vehicle driving directly ahead on its own lane and to select it as the target object.
  • the radar sensor device 12 has a planar antenna device with arrays 15. 2 or 15. 3 of antenna gaps 15 b to 15 h (see FIGS. 3 and 4).
  • FIG. 2 shows a planar antenna device or a non-thinned array 15.1 having four antenna columns 15a according to the prior art that are oriented vertically and are arranged parallel to each other in a plane at intervals.
  • the antenna gaps 15a are arranged in equidistant, ie constant basic distances, which correspond to half the wavelength ⁇ in air, to each other.
  • 0.5 "wavelength ⁇ in air, 1, 0 ⁇ wavelength ⁇ in air and 1, 5 ⁇ wavelength ⁇ in air occur as different distances.
  • FIG. 3 shows a planar antenna device for a first embodiment of the radar sensor device 12 according to the invention with three antenna columns 15b, 15c and 15d arranged vertically at right angles to each other and arranged as a thinned array 15.2 in a plane parallel to each other, each having a plurality of line-fed patch elements 23 ,
  • the thinned array 15.2 of antenna columns 15b, 15c and 15d is implemented with minimal redundancy such that the amount of the determined spacings of the antenna columns 15b, 15c and 15d to each other in the thinned array 15.2 all the different distances between any two antenna columns 15a of the corresponding non-thinned Having arrays 15.1 of Figure 1 a planar antenna device with the same antenna aperture and the same nature of the antenna columns 15a at least once but in a minimum possible number.
  • FIG. 4 shows a planar antenna device for a second embodiment of the radar sensor device 12 according to the invention with four antenna columns 15e, 15f, 15g and 15h arranged vertically and arranged as a thinned array 15.3 in a plane parallel to each other at specific spacings.
  • 15e between the antenna columns, and 15f a distance of 0.5 ⁇ wavelength ⁇ in air
  • 15f and 15g a distance of 1, 5 ⁇ wavelength ⁇ in air
  • between the antenna columns 15g and 15h a Distance in the amount of 1, 0 ⁇ wavelength ⁇ provided in air.
  • the antenna gaps 15e and 15g a distance of 2.0 ⁇ wavelength ⁇ in air
  • between the antenna columns 15f and 15h a distance of 2.5 ⁇ wavelength ⁇ in air
  • between the antenna columns 15e and 15h a distance of 3, 0 ⁇ wavelength ⁇ in air.
  • the determined distances of the antenna columns 15a to 15g to each other are each an integer multiple of a constant basic distance, namely half the wavelength ⁇ in air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Traffic Control Systems (AREA)

Abstract

L'invention concerne un dispositif détecteur de radar muni d'au moins un agencement d'antennes planaire, présentant plusieurs colonnes d'antennes (15b, 15c, 15d) orientées verticalement et agencées dans un plan de façon parallèle, à des intervalles déterminés, sous la forme d'un réseau aminci (15.2), lesdites colonnes présentant respectivement au moins deux éléments patch alimentés par lignes (23). Le réseau aminci (15.2) de colonnes d'antennes (15b, 15c, 15d) est conçu avec une redondance minimale, de sorte que le nombre d'intervalles déterminés entre les colonnes d'antennes (15b, 15c, 15d) du réseau aminci (15.2) présente au moins tous les différents intervalles ménagés entre deux colonnes d'antennes quelconques d'un réseau non aminci correspondant d'un agencement d'antennes planaire présentant une ouverture d'antenne similaire et la même nature de colonnes d'antennes, mais dans un nombre aussi réduit que possible.
EP10731761A 2009-09-16 2010-07-16 Dispositif détecteur de radar muni d'au moins un agencement d'antennes planaire Ceased EP2478387A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009029503A DE102009029503A1 (de) 2009-09-16 2009-09-16 Radarsensorvorrichtung mit wenigstens einer planaren Antenneneinrichtung
PCT/EP2010/060316 WO2011032745A1 (fr) 2009-09-16 2010-07-16 Dispositif détecteur de radar muni d'au moins un agencement d'antennes planaire

Publications (1)

Publication Number Publication Date
EP2478387A1 true EP2478387A1 (fr) 2012-07-25

Family

ID=42797290

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10731761A Ceased EP2478387A1 (fr) 2009-09-16 2010-07-16 Dispositif détecteur de radar muni d'au moins un agencement d'antennes planaire

Country Status (6)

Country Link
US (1) US9310478B2 (fr)
EP (1) EP2478387A1 (fr)
JP (1) JP5373974B2 (fr)
CN (1) CN102612658B (fr)
DE (1) DE102009029503A1 (fr)
WO (1) WO2011032745A1 (fr)

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KR101890352B1 (ko) * 2015-12-11 2018-08-21 주식회사 만도 차량용 레이더 장치 및 그의 고스트 제거 방법
US10677918B2 (en) 2017-02-28 2020-06-09 Analog Devices, Inc. Systems and methods for improved angular resolution in multiple-input multiple-output (MIMO) radar
JP2018182743A (ja) * 2017-04-18 2018-11-15 日本電産株式会社 スロットアレイアンテナ
DE102017214575A1 (de) 2017-08-21 2019-02-21 Astyx Gmbh Abbildendes Radarsystem mit einem Empfangsarray zur Winkelbestimmung von Objekten in zwei Dimensionen durch eine gespreizte Anordnung der Empfangsantennen einer Dimension
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JP7228791B2 (ja) * 2019-03-20 2023-02-27 パナソニックＩｐマネジメント株式会社 レーダ装置
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Also Published As

Publication number Publication date
JP2013504764A (ja) 2013-02-07
US9310478B2 (en) 2016-04-12
US20120223852A1 (en) 2012-09-06
DE102009029503A1 (de) 2011-03-24
JP5373974B2 (ja) 2013-12-18
WO2011032745A1 (fr) 2011-03-24
CN102612658A (zh) 2012-07-25
CN102612658B (zh) 2017-06-09

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