WO2019242907A1 - Verfahren und vorrichtung zur auswertung von radarsignalen - Google Patents
Verfahren und vorrichtung zur auswertung von radarsignalen Download PDFInfo
- Publication number
- WO2019242907A1 WO2019242907A1 PCT/EP2019/059581 EP2019059581W WO2019242907A1 WO 2019242907 A1 WO2019242907 A1 WO 2019242907A1 EP 2019059581 W EP2019059581 W EP 2019059581W WO 2019242907 A1 WO2019242907 A1 WO 2019242907A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- beam shaping
- radar signals
- radar
- signals
- antenna
- Prior art date
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
- 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
- G01S7/35—Details of non-pulse systems
- G01S7/352—Receivers
- G01S7/354—Extracting wanted echo-signals
-
- 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
- G01S7/40—Means for monitoring or calibrating
-
- 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
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous 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
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/42—Simultaneous measurement of distance and other co-ordinates
-
- 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
- G01S7/03—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
- G01S7/35—Details of non-pulse systems
- G01S7/352—Receivers
- G01S7/356—Receivers involving particularities of FFT processing
Definitions
- the present invention relates to a method for evaluating
- Radar signals and a device for evaluating radar signals.
- radar sensors are increasingly being used for more and more tasks. For example, they provide data from the surroundings of a vehicle, which are evaluated and evaluated by a driver assistance system
- radar sensors are of great importance, particularly in the field of automated driving.
- the angular resolution with high sensitivity, i.e. with a large location field, is particularly important.
- UWA Uniform Linear Array
- FFT fast Fourier transform
- the publication DE 10 2011 084 610 A1 discloses an angle-resolving radar sensor for motor vehicles with one antenna, which has several
- Each antenna element can be switched to one of several evaluation channels and is coupled to an evaluation device for determining the angle of incidence of a received signal.
- a method for evaluating radar signals with a step to
- the method further comprises a step for applying a first beam shaping to a radar signal of the plurality of radar signals, and a step for applying a second beam shaping to a radar signal of the plurality of radar signals.
- the second beam shaping is in particular different from the first beam shaping.
- the method comprises a step for evaluating the received radar signals using the results of the first beam shaping and the second beam shaping.
- a device for evaluating radar signals, in particular a plurality of radar signals, which have been received by an antenna array comprises a first processing device, a second processing device and an evaluation device.
- the processing device is designed to apply a first beam shaping to a radar signal of the plurality of radar signals.
- the processing device is designed to apply a second beam shaping to a radar signal of the plurality of radar signals, the second beam shaping being different from the first beam shaping.
- Evaluation device is designed to determine the received radar signals using the results of the first beam shaping and the second
- the present invention is based on the knowledge that there is a fluctuating gain in the case of digital beam shaping of the radar signals from an antenna array over the angular range of the locating field. In particular, there are significant drops in profit over the angular range of the location field.
- a second beam shaping can be applied to the radar signals from the antenna array, which preferably has its maxima in the areas of the minima of the first beam shaping. In this way, the drop in profits of the first beam shaping can be at least approximately compensated for by the second beam shaping
- the radar signals which are to be evaluated by the method according to the invention can in this case preferably be provided by an antenna array with uniformly distributed, equidistantly arranged antenna elements.
- each antenna element can provide a signal for a receiving channel of a radar signal.
- the beam shaping can be realized particularly efficiently by means of a fast Fourier transform (Fast Fourier Transform, FFT). This enables particularly fast and efficient beam shaping, which requires a relatively small amount of hardware for the calculation.
- FFT Fast Fourier Transform
- a radar signal is to be understood as the sum of all signals of the individual reception channels of the individual antenna elements of the antenna array.
- a radar system is used regularly, preferably periodically, Send out high-frequency signals that are reflected by an object to be detected, and the reflected signals can then be received by the antenna elements of the antenna array and made available in the individual receiving channels for further processing.
- the multiple transmission of high-frequency signals and the reception of the corresponding radar responses also result in several
- Receive radar signals one after the other in a time sequence which can then be evaluated.
- Multiple beams can be formed during beam shaping.
- the first beam shaping and the second beam shaping are each applied to the same radar signal.
- the first beam shaping and the second beam shaping are each based on the same signals of the reception channels of the antenna elements of the
- Antenna arrays applied. Multiple beam shaping is thus carried out for each received radar signal.
- the first beam shaping and the second beam shaping are applied to different radar signals.
- a first beam shaping and a second beam shaping can be used alternately for a temporal sequence of received radar signals. In this way, no increase in the computing effort for the two different beam shapes is required.
- the application of the first beam shaping and / or the application of the second beam shaping are carried out by applying a complex window function.
- Such complex window functions enable particularly simple and efficient adaptation of the beam shaping to the respective requirements.
- the maximum of the second beam shaping is half a bin compared to the maximum of the first beam shaping postponed.
- the maxima of the second beamforming lie in the areas of the minima of the first beamforming. In this way, an at least approximately homogeneous course of the gain can be realized over the angular range of the location field.
- beam shaping in particular beam shaping using FFT, one bin corresponds to the distance between two adjacent maxima of the antenna beam.
- the method further comprises a step for applying at least one further beam shaping to a radar signal of the plurality of radar signals.
- a further homogenization of the gain can be achieved via the location field. It goes without saying that if there are more than two different beam shapes, the individual ones
- Beam formations are each adjusted so that they are at a
- the maxima of the individual beam formations can be shifted by one third in relation to one another in the case of three beam formations, or generally by 1 / n in the case of n beam formations.
- each radar signal of the plurality of radar signals each includes received signals from a plurality of antenna elements of the antenna array. As previously described, this is the
- Antenna array preferably around an antenna array with equidistant
- the beam shaping can be carried out particularly efficiently by means of a fast Fourier transformation.
- Figure 1 is a schematic representation of a block diagram of a
- Figure 2 is a schematic representation of the antenna gain according to the
- FIG. 3 shows a schematic illustration of a flow chart as it is based on a method for evaluating radar signals according to one embodiment.
- Figure 1 shows a schematic representation of a block diagram of a
- the radar system with a device 1 for evaluating radar signals.
- the radar system comprises at least one transmitting antenna 3, which
- the emitted signals can be reflected on an object O.
- the reflected signals are then received by the antenna elements 2-i and provided on the device 1 for evaluating the radar signals. This is used as a radar signal in this
- Context understood the entirety of the reception channels of all antenna elements 2-i that correspond to a transmitted radar signal. Due to the multiple transmission of transmission signals by the transmission antenna 3, a time sequence of several radar signals is also received by the antenna elements 2-i.
- the antenna array with the antenna elements 2-i is preferably an antenna array with a plurality of equidistantly arranged antenna elements 2-i, the individual antenna elements 2-i being arranged on a virtual axis.
- the received radar signals are provided in the device 1 for evaluating the radar signals.
- the device 1 for evaluating the radar signals comprises at least one first processing device 11, a second one
- Processing device 12 and an evaluation device 13 The first
- Processing device 11 calculates a first beam shaping for each radar signal using the signals of antenna elements 2-i.
- the beam shaping can be carried out particularly easily by means of a fast Fourier transformation. Since the basics of such beam shaping using FFT
- the digital beam shaping of the radar signal can be any digital beam shaping of the radar signal.
- the second processing device 12 performs analogously to the first
- Processing device 11 also a beam shaping.
- beam shaping by the second processing device 12 is different from beam shaping by the first processing device 11.
- a second processing device 12 can
- Beam shaping can be realized, the maxima of which are in the minima of the first beam shaping. This can be achieved, for example, by using a window function with a complex component for the second beam shaping, which causes the maxima to be shifted by half a bin.
- N the number of antenna elements 2-i of the antenna array
- n the reception channel of an antenna element 2-i of the antenna array Performing two beamforms with an offset of half a bin is identical to beamforming, in which the length is doubled in the FFT with zero padding. However, this increases the computing effort.
- the two beam shapings can be implemented by the two separate processing devices 11 and 12.
- the two beam formations are also implemented by a common processing device which comprises sufficient computing capacities in order to be able to carry out the calculation of the two beam formations.
- Figure 2 shows as a solid line the profit according to the first
- the gain of the second beam shaping is shown in FIG. 2 as a dashed line.
- the second beam shaping is set such that the maxima of the second beam shaping match at least approximately with the minima of the first beam shaping. In this way it can be clearly seen that an at least approximately homogeneous course of the antenna gain can be achieved by superimposing the two courses. In this way, good detection of objects can be achieved over the entire location field.
- a first radar signal that was received at a first point in time can be a first
- Beam shaping can be applied, and a second beam shaping can be applied to a radar signal which was subsequently received at a second, later point in time. A further radar signal then received can be processed again with a first beam shaping, etc. In this way, the advantages of different beam shaping can be used without additional computational effort being incurred. It is understood that the representation according to Figure 1 with only one
- Transmitting antenna 3 and only four receiving antenna elements 2-i is only to be understood schematically and does not constitute a restriction of the present invention. Rather, different numbers of transmitting antennas 3 and / or receiving antenna elements 2-i can also be realized.
- the present invention is not only restricted to the use of two different beam shapes. Rather, it is also possible to carry out more than two different beam configurations simultaneously or in succession. This way, another
- the displacement of the individual beam shapes against one another must be adjusted accordingly. For example, in the case of three different beam configurations, the maxima of the individual beam configurations can each be shifted from one another by a third.
- the results of the individual beamforming are finally fed to a processing device 13, which can each process the radar signals using the individual beamforming. For example, a detection of objects, a determination of an object speed or the like can be carried out. Of course, any other suitable evaluations of the radar signals are also possible using the multiple beam shapes.
- FIG. 3 shows a schematic illustration of a flowchart as it is a method for evaluating radar signals according to a
- Embodiment is based.
- step S1 several radar signals are received by an antenna array with the antenna elements 2-i.
- step S2 a first beam shaping is applied to a received radar signal, and in step S3 a second beam shaping is applied to a radar signal
- the beam shaping and the second beam shaping can either be based on one and the same radar signal are used, or only one beam shaping is applied in succession to several radar signals received in succession.
- step S4 the radar signals are evaluated under
- the evaluation can include, for example, a detection of one or more objects or a speed determination of an object. Any other suitable evaluations of the radar signals are of course also possible.
- the present invention relates to an improved one
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020570918A JP7221310B2 (ja) | 2018-06-21 | 2019-04-12 | レーダ信号を評価するための方法および装置 |
EP19717894.0A EP3811102A1 (de) | 2018-06-21 | 2019-04-12 | Verfahren und vorrichtung zur auswertung von radarsignalen |
US17/042,564 US11835641B2 (en) | 2018-06-21 | 2019-04-12 | Method and device for evaluating radar signals |
CN201980041533.5A CN112292607B (zh) | 2018-06-21 | 2019-04-12 | 用于分析处理雷达信号的方法和设备 |
KR1020217001686A KR20210021551A (ko) | 2018-06-21 | 2019-04-12 | 레이더 신호들의 평가를 위한 방법 및 장치 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018210155.8A DE102018210155A1 (de) | 2018-06-21 | 2018-06-21 | Verfahren und Vorrichtung zur Auswertung von Radarsignalen |
DE102018210155.8 | 2018-06-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019242907A1 true WO2019242907A1 (de) | 2019-12-26 |
Family
ID=66182588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2019/059581 WO2019242907A1 (de) | 2018-06-21 | 2019-04-12 | Verfahren und vorrichtung zur auswertung von radarsignalen |
Country Status (7)
Country | Link |
---|---|
US (1) | US11835641B2 (de) |
EP (1) | EP3811102A1 (de) |
JP (1) | JP7221310B2 (de) |
KR (1) | KR20210021551A (de) |
CN (1) | CN112292607B (de) |
DE (1) | DE102018210155A1 (de) |
WO (1) | WO2019242907A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018210114A1 (de) * | 2018-06-21 | 2019-12-24 | Robert Bosch Gmbh | Vorrichtung und Verfahren zur Auswertung von Radarsignalen |
US12013484B2 (en) * | 2020-05-20 | 2024-06-18 | Infineon Technologies Ag | Radar receiving system and method for compensating a phase error between radar receiving circuits |
FR3116127B1 (fr) * | 2020-11-12 | 2022-11-11 | Thales Sa | Système radar d'imagerie à entrées et sorties multiples de type MIMO. |
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WO1997029388A1 (en) * | 1996-02-05 | 1997-08-14 | The Secretary Of State For Defence | Collision warning system |
DE102011084610A1 (de) | 2011-10-17 | 2013-04-18 | Robert Bosch Gmbh | Winkelauflösender Radarsensor |
US20160033632A1 (en) * | 2014-03-05 | 2016-02-04 | Delphi Technologies, Inc. | Mimo antenna with elevation detection |
EP3021132A1 (de) * | 2014-11-11 | 2016-05-18 | Nxp B.V. | Mimo-radarsystem |
DE102016210043A1 (de) * | 2015-06-09 | 2016-12-15 | Mando Corporation | Vorrichtung zur Verarbeitung von Radarsignalen und Verfahren zur Verarbeitung von Signalen dafür |
DE102015221163A1 (de) * | 2015-10-29 | 2017-05-04 | Astyx Gmbh | Verfahren und Vorrichtung zur Verfolgung von Objekten, insbesondere sich bewegenden Objekten, in den dreidimensionalen Raum von abbildenden Radarsensoren |
DE102015222884A1 (de) * | 2015-11-19 | 2017-05-24 | Conti Temic Microelectronic Gmbh | Radarsystem mit verschachtelt seriellem Senden und parallelem Empfangen |
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JPH11234023A (ja) | 1998-02-12 | 1999-08-27 | Mitsubishi Electric Corp | 妨害波抑圧装置 |
JPH11352224A (ja) * | 1998-06-05 | 1999-12-24 | Mitsubishi Electric Corp | レーダ装置 |
JP2002185378A (ja) * | 2000-12-18 | 2002-06-28 | Mitsubishi Electric Corp | アレーアンテナ装置 |
JP3813898B2 (ja) | 2002-04-23 | 2006-08-23 | 日本電信電話株式会社 | フェーズドアレーアンテナとそのビーム形成回路及びビーム形成方法 |
JP4722144B2 (ja) | 2008-01-10 | 2011-07-13 | 三菱電機株式会社 | レーダ装置 |
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JP2011180004A (ja) | 2010-03-02 | 2011-09-15 | Mitsubishi Electric Corp | 捜索レーダ装置および捜索レーダ装置における不要波成分抑圧方法 |
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DE102013212090A1 (de) * | 2013-06-25 | 2015-01-08 | Robert Bosch Gmbh | Winkelauflösender FMCW-Radarsensor |
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DE102018210114A1 (de) | 2018-06-21 | 2019-12-24 | Robert Bosch Gmbh | Vorrichtung und Verfahren zur Auswertung von Radarsignalen |
-
2018
- 2018-06-21 DE DE102018210155.8A patent/DE102018210155A1/de active Pending
-
2019
- 2019-04-12 WO PCT/EP2019/059581 patent/WO2019242907A1/de active Application Filing
- 2019-04-12 EP EP19717894.0A patent/EP3811102A1/de active Pending
- 2019-04-12 CN CN201980041533.5A patent/CN112292607B/zh active Active
- 2019-04-12 KR KR1020217001686A patent/KR20210021551A/ko not_active Application Discontinuation
- 2019-04-12 US US17/042,564 patent/US11835641B2/en active Active
- 2019-04-12 JP JP2020570918A patent/JP7221310B2/ja active Active
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WO1997029388A1 (en) * | 1996-02-05 | 1997-08-14 | The Secretary Of State For Defence | Collision warning system |
DE102011084610A1 (de) | 2011-10-17 | 2013-04-18 | Robert Bosch Gmbh | Winkelauflösender Radarsensor |
US20160033632A1 (en) * | 2014-03-05 | 2016-02-04 | Delphi Technologies, Inc. | Mimo antenna with elevation detection |
EP3021132A1 (de) * | 2014-11-11 | 2016-05-18 | Nxp B.V. | Mimo-radarsystem |
DE102016210043A1 (de) * | 2015-06-09 | 2016-12-15 | Mando Corporation | Vorrichtung zur Verarbeitung von Radarsignalen und Verfahren zur Verarbeitung von Signalen dafür |
DE102015221163A1 (de) * | 2015-10-29 | 2017-05-04 | Astyx Gmbh | Verfahren und Vorrichtung zur Verfolgung von Objekten, insbesondere sich bewegenden Objekten, in den dreidimensionalen Raum von abbildenden Radarsensoren |
DE102015222884A1 (de) * | 2015-11-19 | 2017-05-24 | Conti Temic Microelectronic Gmbh | Radarsystem mit verschachtelt seriellem Senden und parallelem Empfangen |
Also Published As
Publication number | Publication date |
---|---|
US20210033700A1 (en) | 2021-02-04 |
CN112292607B (zh) | 2024-05-24 |
JP2021527823A (ja) | 2021-10-14 |
US11835641B2 (en) | 2023-12-05 |
DE102018210155A1 (de) | 2019-12-24 |
EP3811102A1 (de) | 2021-04-28 |
CN112292607A (zh) | 2021-01-29 |
JP7221310B2 (ja) | 2023-02-13 |
KR20210021551A (ko) | 2021-02-26 |
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