EP3729559A1 - Dispositif d'émission et de réception de rayonnement électromagnétique - Google Patents

Dispositif d'émission et de réception de rayonnement électromagnétique

Info

Publication number
EP3729559A1
EP3729559A1 EP18786286.7A EP18786286A EP3729559A1 EP 3729559 A1 EP3729559 A1 EP 3729559A1 EP 18786286 A EP18786286 A EP 18786286A EP 3729559 A1 EP3729559 A1 EP 3729559A1
Authority
EP
European Patent Office
Prior art keywords
antennas
antenna
group
receiving
polarization
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.)
Withdrawn
Application number
EP18786286.7A
Other languages
German (de)
English (en)
Inventor
Michael Schoor
Marcel Mayer
Klaus Baur
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 EP3729559A1 publication Critical patent/EP3729559A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • 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
    • G01S13/003—Bistatic radar systems; Multistatic radar systems
    • 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
    • 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
    • G01S7/025—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using polarisation effects involving the transmission of linearly polarised waves
    • 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
    • G01S7/026—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using polarisation effects involving the transmission of elliptically or circularly polarised waves
    • 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
    • G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
    • 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
    • G01S7/41—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
    • G01S7/411—Identification of targets based on measurements of radar reflectivity
    • 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
    • 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

  • the present invention relates to a device for emitting
  • Receive different antennas are used, and this is a first antenna or a first group of antennas used for transmitting in a first polarization form, a second antenna or a second group of antennas is used for transmitting in a second polarization form and a third antenna or a third Group of antennas is used for receiving the reflected electromagnetic radiation emitted by the first antenna or the first group of antennas and the second antenna or the second group of antennas.
  • the device disclosed in the context of the invention can advantageously be attached to a
  • Motor vehicle be mounted and used for object detection in the context of a distance and speed control or collision avoidance and thereby in the propagation of the two differently polarized electromagnetic waves over different propagation paths obtained from the different reception levels polarimetric information for road condition detection, in particular for determining the
  • the device is designed with a transmitting device, by means of which electromagnetic waves can be emitted with a first polarization, so that by an optical interaction with the measuring point electromagnetic waves in a second and / or third polarization can be generated. Furthermore, the device has a first detector device for detecting a first radiation power at the measurement point of generated electromagnetic waves having the second polarization, which is based on a first measurement signal based on the detected first radiation power. Furthermore, a second
  • Detector device for detecting a second radiation power at the measuring point generated electromagnetic waves provided with the third polarization, which is different from the second polarization and is provided for generating a second measuring signal based on the detected second radiant power. Characteristics of the measuring point can be determined by comparing the first measuring signal with the second measuring signal.
  • the core of the present invention is to provide a system, in particular for microwaves or millimeter waves, are emitted and received with the received signals in different polarization forms and a level comparison of the received signals can be separated from each other and thus, for example, a road condition detection, in particular a detection of the weather condition of Road surface perform.
  • the system for emitting and receiving electromagnetic radiation is designed as a bistatic sensor, in which separate antennas or separate antenna groups are provided for transmitting and receiving the electromagnetic radiation.
  • first polarization form and the second polarization form are substantially orthogonal polarizations. It can be provided that the first and the second polarization form are respectively linear / vertical and linear / horizontal polarized or right-handed circular and left-handed circularly polarized or linear / diagonal and
  • orthogonality is also the subject of this development, but the invention is not limited thereto.
  • the third antenna or the third group of antennas to have both the first polarization form and the second one
  • the receiving antenna or the receiving antennas is designed such that it can receive both mutually substantially orthogonal signals by means of a single antenna.
  • the first antenna or the first group of antennas consists of horizontally polarized transmitting individual columns or double columns consists.
  • a single column is a supply line that has a
  • Supply line opens into branching stubs
  • Stub lines in their length and width are designed so that they can emit electromagnetic signal.
  • a vertical orientation of the feed line on the circuit board wherein the normal vector of the circuit board is oriented in the transmitting and receiving directions, there is a wide field of view of about +/- 60 ° and a low gain in the main beam direction compared to the second antenna or the second group of antennas. Due to the small aperture of the antenna thus creates a wide, but not very far reaching detection field.
  • the first antenna or the first group of antennas in the form of double columns increases both the radiated power and the aperture of the antenna, so that thus the detection range depending on
  • the third antenna or the third group of antennas consists of a combination of horizontally polarized receiving individual columns or double columns according to the first antenna or the first group of antennas and vertically polarized receiving multi-column arrays of patch antennas according to the second antenna or the second group of antennas.
  • multi-column array of patch antennas In this type of embodiment of the second antenna or the second group of antennas are connected to the
  • Supply line connected in parallel, branching supply lines, namely for each antenna column, a line coupled, these Supply lines continue geometrically parallel to each other while each supplying a series of patch antennas, which are connected to each other in series.
  • a vertical alignment of the feed lines of the multiple columns of antenna arrays results due to the larger aperture of this antenna, a narrower viewing area of about +/- 20 ° and a higher gain in the main beam direction compared to the first antenna or the first group of antennas. This creates a coverage area that is narrower, but more far-reaching.
  • the transmission signals of the first antenna or the first group of antennas and the transmission signals of the second antenna or the second group of antennas detect different distance ranges. Furthermore, in combination or alternatively, it may be provided that the transmission signals of the first antenna or the first group of antennas and the transmission signals of the second antenna or the second group of
  • Antennas have different opening angles of the detection area.
  • the first antenna or the first group of antennas which consists of horizontally polarized transmitting individual columns or double columns, has a near distance range and a large aperture angle of the detection range and the second antenna or the second group of antennas, the consists of one or more vertically polarized transmitting multi-column array of patch antennas, a wide range of distance and a small opening angle of the
  • the third antenna or the third group of antennas from the reception levels of the received signals of the two
  • orthogonal polarization forms the polarimetric information of the
  • reflective object is determined. It may be particularly advantageous that in determining the reception level of the received signals of the two substantially orthogonal polarization forms the different
  • Group factors of each participating transmit and receive antennas and the different gain factors of the antennas are taken into account. Due to the different apertures and thus different ranges and aperture angles, the reception levels of the two electromagnetic signals with different polarization shapes are not directly comparable with each other. If, however, these receive levels are weighted with the respective gain and group factors, then the receive levels are comparable with one another and the reflectivity of the individual polarization forms, possibly on different receive paths, can be evaluated.
  • the device is mounted in a motor vehicle, in particular on the motor vehicle front and an object detection in the context of a distance and speed control or a
  • inventive system in addition to the polarimetric measurement and a distance control or trigger emergency braking to avoid collision.
  • the polarimetric information obtained from the different reception levels for road condition detection, in particular for determining the weather-dependent road condition is used. This can for example be done so that the reflectivity
  • Figure 1 is a schematic representation of the operation of a
  • FIG. 2 shows an antenna design as a single column, which is advantageously used as the first antenna
  • FIG. 3 shows an embodiment of the first antenna or of the first group of antennas as a double column
  • Figure 4 shows an embodiment of the second antenna or the second group of
  • Figure 5 shows an embodiment of the third antenna or third group of
  • Antennas consisting of a combination of a single antenna column and a multi-column array of patch antennas
  • FIG. 6 shows an embodiment of the third antenna or the third group of FIG
  • Antennas consisting of a combination of an antenna double column with a multi-column array of patch antennas
  • FIG. 7 shows an exemplary arrangement of the three antennas or three groups of antennas on a printed circuit board
  • Figure 9 is a graph showing the reception levels of the different
  • Figure 1 shows a schematic representation of the operation of a transmitting and receiving system according to the invention. To recognize is one
  • Radar sensor 1 which is shown on the left hand side and a detected object 2, which is shown schematically as a circle in the right half of the figure.
  • Radar sensor 1 also has a first antenna or a first group of antennas 3, by means of which a first transmission signal Txl is emitted.
  • the radar sensor 1 has a second antenna or a second group of antennas 4, by means of which a second transmission signal Tx2 is emitted.
  • the first antenna or first group of antennas 3 emits, by way of example, a horizontally polarized transmission signal 6 in the direction of the object 2 to be detected.
  • the second antenna or second group of antennas emits a vertically polarized transmit signal 7, which is also shown as Tx2.
  • the two transmission signals Txl and Tx2 6,7 which have mutually substantially orthogonally polarized polarization forms, are reflected on the detected object 2 and as received signals 8, a horizontally polarized received signal and the received signal 9, which is designed as a vertically polarized received signal from the receive third antenna or third group of antennas 5 of the radar sensor 1.
  • the third antenna or third group of antennas 5 of the radar sensor 1 is designed to receive the reflected transmission signals Tx1 and Tx2 as the reception signal Rx.
  • the received signals 8, 9 may also have different propagation paths between the detected object 2 and the radar sensor 1.
  • FIG. 2 shows an embodiment of the first antenna or the first group of antennas 3 for transmitting the first transmission signal Txl, having a first polarization form.
  • the individual column shown is executed several times, so that it is in several single-column antennas, a group antenna, for example, to increase the aperture of the device is executed. Therefore, only the first antenna 3 will be described below as a single antenna, however, the statements also apply to the embodiment that this single-column antenna is executed several times and is used as a group antenna.
  • the transmission signal Txl is supplied, which is supplied via an exemplary vertically aligned feed line of the antenna.
  • the circuit board on which the antenna 3 is applied aligned parallel to the drawing surface and has a transmitting and receiving device orthogonal to the drawing plane.
  • stubs are arranged, which act as transmitting elements. The length of these stubs, the width of the stubs and the
  • FIG. 3 shows a further embodiment of the first antenna or of the first group of antennas 3 in the form of a double-column antenna.
  • the single-column antenna 3 described in FIG. 2 is implemented double-side by side, the two antenna columns being aligned parallel to each other, so that the two feed lines 10 run parallel to one another.
  • Both Einzelspalten- the double-column antennas are powered by the same transmission signal Txl and send it simultaneously
  • Double-column antenna according to Figure 3 to obtain an antenna with larger Range and narrower transmission lobe.
  • Double-column antenna depends on the respective transmission power, the application of the device and the propagation conditions and can be carried out by the skilled person readily.
  • the transmission signals emitted by the single-column antenna 3 according to FIG. 2 and the double-column antenna according to FIG. 3 are horizontally polarized electromagnetic signals whose polarization plane lies parallel to the alignment of the transmission elements 11 and thus orthogonal to the alignment of the feed line 10.
  • FIG. 4 shows an embodiment of the second antenna or the second group of antennas 4 as a vertically polarized transmitting, multi-column array of patch antennas.
  • a feed line 12 via which a second transmission signal Tx2 is supplied.
  • the feed line 12 branches into a distribution line 13, to which a plurality of columns 14 are connected.
  • the columns 14, which together form an array of patch antennas are aligned parallel to one another.
  • Each column consists of a sequence of rectangular antenna patches 15 serially connected to each other by the series feed elements 16.
  • each antenna column 14 has the same number of antenna patches 15 and the same lengths of series feed elements 16 between the patch antennas 15.
  • FIG. 5 shows an embodiment of the third antenna or third group of antennas 5 for receiving the received signals Rx of both polarization forms.
  • the illustrated embodiment of this third antenna or third group of antennas 5 consists of a multi-column array of patch antennas, in which a column of patch antennas, preferably in the middle of Antenna, was omitted. Instead, a single-column antenna according to the embodiment of the first antenna or first group of antennas 3 has been inserted at this omitted location.
  • a single-column antenna according to the embodiment of the first antenna or first group of antennas 3 has been inserted at this omitted location.
  • Antenna structure the single-column antenna 3 shown, which consists of a
  • This horizontally polarized receiving antenna structure is surrounded on the left and right sides by the columns of the vertically polarized receiving multi-column array of patch antennas consisting of a plurality of antenna columns 14 and consisting of patch antennas arranged in series. All antenna structures are connected to each other by means of a distribution line 13, shown at the bottom of Figure 5 and connected via a receiving line 17 with an evaluation circuit, so that the received signal Rx is passed to the receiving circuit via the receiving line 17.
  • the individual gaps 3 shown centrally in this antenna structure can optionally also be mounted on the left edge of the antenna structure, on the right edge of the antenna structure or on both sides of the antenna structure.
  • FIG. 6 shows a modification of the receiving antenna presented in FIG.
  • a structure consisting of a double slit according to FIG. 3 is inserted in the middle.
  • This double-column structure according to FIG. 3 consists of two
  • Single-column antennas 3 which in turn each consist of a feed line 10 and the horizontally polarized receiving transmitting elements 11, the so-called stubs.
  • serially connected patch antenna columns 14 which function as vertically polarized receiving multi-column patch antennas, are arranged. Also in this
  • the embodiment of the receiving antenna shown in Figure 6 can be varied flexibly, for example, by the two individual columns 3 are respectively applied to the left and the right edge of the patch antenna structure or, for example, single-column antennas. 3 alternately with antenna columns 14, consisting of arrays of patch antennas, combined with each other.
  • FIG. 7 shows, by way of example, a transmitting and receiving circuit which may be contained in the radar sensor 1.
  • a high-frequency circuit board 18 is shown, on which a transmitting and receiving circuit 19 is applied.
  • This transmitting and receiving circuit 19 can be embodied, for example, as an MMIC (Monolithic Microwave Integrated Circuit) and is capable of generating both the transmission signals Tx1, Tx2 and also evaluating the reception signals Rx. To this transmitting and receiving circuit 19 are the MMIC (Monolithic Microwave Integrated Circuit) and the MMIC (Monolithic Microwave Integrated Circuit) and the MMIC (Monolithic Microwave Integrated Circuit) and the transmission signals Tx1, Tx2 and also evaluating the reception signals Rx.
  • MMIC Monitoring Microwave Integrated Circuit
  • the two first antennas 3 or the group of first antennas 3 for transmitting the transmission signal Txl are connected via the two supply lines 20.
  • These first antennas 3 or first group of antennas 3 are the horizontally polarized transmitting individual columns 3.
  • transmission signals Tx2 are transmitted from the transmitting and receiving circuit 19 via the supply lines 21 to the second antennas 4 and the second group of antennas 4, send out the vertically polarized transmission signals.
  • These second antennas 4 and this second group of antennas 4 are designed as a multi-column array of patch antennas. In the case that one wishes to detect azimuthal angles of the detected object 2 with the radar sensor 1, it is advisable to arrange the mutually associated first antennas 3, second antennas 4 or third antennas 5 horizontally next to one another, so that one can use the
  • Phase differences of the individual antennas of each group of antennas can determine the azimuth angle of the detected object 2.
  • the receiving antennas 5 are shown, which form the third antennas 5 and the third group of antennas 5.
  • These third antennas 5 or third group of antennas 5 consist of several, in the example shown in FIG. 4, combined receiving antennas, which are each composed of a single column 3 and left and right sides thereof arranged multi-column arrays of patch antennas 14. This illustrated antenna structure of the overall system is of course also by means of the alternative embodiments shown with
  • Double-column antennas instead of single-column antennas or others, the Skilled in common variants of the known embodiments,
  • a horizontally polarized transmission signal Tx1 can also be emitted via the supply lines 20 and a vertically polarized transmission signal Tx2 can be emitted via the supply lines 21.
  • both vertically and horizontally polarized received signals Rx can be received simultaneously or, in the case of alternate transmission, at any one time
  • FIG. 8 shows an exemplary application of this system, in which a vehicle 23 is equipped by means of a radar sensor 1 on the vehicle front.
  • This vehicle 23 follows a preceding vehicle 24 on the roadway 25.
  • the radar sensor 1 can perform, for example, a distance and cruise control (ACC) or monitor emergency braking functionality and trigger any emergency braking that may be necessary. Due to the inventive design of the radar sensor 1 is capable of the nature of the surface of the roadway 25, in particular the
  • transmission signals 26 are emitted by the radar sensor 1 in the direction of the preceding vehicle 24, the detected object 2.
  • the transmission signal 26 in this case consists of both horizontally polarized as from vertically polarized transmission signals, which are sent according to a common multiplex method such as time division multiplex.
  • the transmitted signals reflected at the preceding vehicle 24 are reflected back as received signals 27, 28 to the radar sensor 1. It is possible that received signals are reflected back as direct received signals 27 to the sensor 1. Furthermore, it is also possible that the am
  • Receive signal 28 via the reflection point 29 are received by the sensor 1. Due to the reflection 29 on the road, it is possible that certain Polarization components of the indirectly received signal 28 are absorbed or reflected in directions other than the sensor 1.
  • the reflectivity of the roadway surface in particular the different reflectivity of signal components, can be determined
  • ve Kunststoffenen polarizations are evaluated, which can be closed in particular on the weather condition of the road surface at the reflection point 29 can be determined.
  • FIG. 9 a diagram of the received signals for the different weather conditions is shown wet and dry. On the abscissa, a distance axis 31 is shown, which is the distance of the
  • the noise signal ratio SNR is the reception level of
  • solid lines 35, 36 plot the response level over dry road distances, line 35 being vertical polarization on the dry road surface and line 36 being horizontal polarization on dry road.
  • the vertically polarized received signals in this case represent the direct received signal 27 and the weaker received signal 36, the horizontally polarized, indirect received signal 28.

Landscapes

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

Abstract

La présente invention concerne un dispositif (1) d'émission (6,7) et de réception (8,9) d'un rayonnement électromagnétique. Différentes antennes (3, 4, 5) sont utilisées pour l'émission et la réception et pour cela une première antenne (3) ou un premier groupe d'antennes (3) est utilisé pour l'émission sous une première forme de polarisation (6), une deuxième antenne (4) ou un deuxième groupe d'antennes (4) est utilisé pour l'émission sous une deuxième forme de polarisation (7), et une troisième antenne (5) ou un troisième groupe d'antennes (5) est utilisé pour recevoir le rayonnement électromagnétique réfléchi qui a été émis par la première antenne (3) ou le premier groupe d'antennes (3) et la deuxième antenne (4) ou le deuxième groupe d'antennes (4). Le dispositif (1) selon l'invention peut être avantageusement fixé à un véhicule automobile (23) et utilisé pour la détection d'objets (24) dans le contexte de la régulation de distance et de vitesse ou de l'évitement de collisions et, pendant la propagation des deux ondes électromagnétiques (6, 7) de polarisations différentes sur différentes voies de propagation (28, 29), les informations de polarisation obtenues à partir des différents niveaux de réception sont utilisées pour la détection d'état de route (29), en particulier pour déterminer l'état de route (29) dépendant des conditions météorologiques.
EP18786286.7A 2017-12-20 2018-10-11 Dispositif d'émission et de réception de rayonnement électromagnétique Withdrawn EP3729559A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017223471.7A DE102017223471A1 (de) 2017-12-20 2017-12-20 Vorrichtung zum Aussenden und Empfangen elektromagnetischer Strahlung
PCT/EP2018/077703 WO2019120672A1 (fr) 2017-12-20 2018-10-11 Dispositif d'émission et de réception de rayonnement électromagnétique

Publications (1)

Publication Number Publication Date
EP3729559A1 true EP3729559A1 (fr) 2020-10-28

Family

ID=63857921

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18786286.7A Withdrawn EP3729559A1 (fr) 2017-12-20 2018-10-11 Dispositif d'émission et de réception de rayonnement électromagnétique

Country Status (7)

Country Link
US (1) US11579243B2 (fr)
EP (1) EP3729559A1 (fr)
JP (1) JP7079331B2 (fr)
KR (1) KR102554214B1 (fr)
CN (1) CN111512494B (fr)
DE (1) DE102017223471A1 (fr)
WO (1) WO2019120672A1 (fr)

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WO2021010682A1 (fr) * 2019-07-12 2021-01-21 삼성전자 주식회사 Dispositif électronique et procédé de détection d'objets externes à partir d'un réseau antennaire
JP7549979B2 (ja) * 2020-06-25 2024-09-12 日立Astemo株式会社 レーダセンサおよびレーダセンサシステム
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JP7079331B2 (ja) 2022-06-01
CN111512494B (zh) 2021-09-21
DE102017223471A1 (de) 2019-06-27
WO2019120672A1 (fr) 2019-06-27
KR20200096633A (ko) 2020-08-12
JP2021507254A (ja) 2021-02-22

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