DE102009008528A1 - Radar system for use in driver assistance system of e.g. airplane, has signal processing device evaluating signal received by radar receiving antenna, and comprising directional transmitter and two sound converters - Google Patents
Radar system for use in driver assistance system of e.g. airplane, has signal processing device evaluating signal received by radar receiving antenna, and comprising directional transmitter and two sound converters Download PDFInfo
- Publication number
- DE102009008528A1 DE102009008528A1 DE102009008528A DE102009008528A DE102009008528A1 DE 102009008528 A1 DE102009008528 A1 DE 102009008528A1 DE 102009008528 A DE102009008528 A DE 102009008528A DE 102009008528 A DE102009008528 A DE 102009008528A DE 102009008528 A1 DE102009008528 A1 DE 102009008528A1
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- DE
- Germany
- Prior art keywords
- radar
- acoustic
- signal
- radar system
- transmitting device
- 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.)
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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
- G01S7/40—Means for monitoring or calibrating
- G01S7/4004—Means for monitoring or calibrating of parts of a radar system
-
- 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
- G01S13/08—Systems for measuring distance only
- G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
- G01S13/34—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
-
- 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
- G01S13/86—Combinations of radar systems with non-radar systems, e.g. sonar, direction finder
-
- 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
- G01S7/35—Details of non-pulse 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
- G01S2013/9322—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles using additional data, e.g. driver condition, road state or weather data
-
- 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
- G01S2013/9324—Alternative operation using ultrasonic 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
- 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
-
- 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
- G01S2013/93275—Sensor installation details in the bumper area
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
Die Erfindung betrifft ein Radarsystem für ein Fahrzeug. Die Erfindung betrifft weiterhin ein Fahrerassistenzsystem mit einem Radarsystem für ein Fahrzeug. Die Erfindung betrifft schließlich ein Verfahren zur Erkennung einer Sensorblockade eines Radarsystems.The The invention relates to a radar system for a vehicle. The The invention further relates to a driver assistance system with a Radar system for a vehicle. Finally, the invention relates a method for detecting a sensor blockade of a radar system.
Zur
Messung von Abstand und Relativgeschwindigkeit eines Objektes in
der Umgebung eines Kraftfahrzeugs verwenden Fahrerassistenzsysteme üblicherweise
Radar. Ein Radarsystem für Kraftfahrzeuge ist beispielsweise
aus der
Der Erfindung liegt daher die Aufgabe zugrunde, ein Radarsystem für ein Fahrzeug zu verbessern. Der Erfindung liegt weiterhin die Aufgabe zugrunde, ein Fahrerassistenzsystem mit einem derartigen Radarsystem zu schaffen. Schließlich liegt der Erfindung die Aufgabe zugrunde, ein Verfahren zur Erkennung einer Sensorblockade eines Radarsystems bereitzustellen.Of the Invention is therefore the object of a radar system for to improve a vehicle. The invention is still the task basis, a driver assistance system with such a radar system to accomplish. Finally, the invention is the task underlying a method for detecting a sensor blockade of a Radar system provide.
Diese Aufgaben werden durch die Merkmale der Ansprüche 1, 10 und 11 gelöst.These Problems are solved by the features of claims 1, 10 and 11 solved.
Der Kern der Erfindung besteht darin, mit Hilfe eines akustischen Wellenfelds ein künstliches Ziel zu erzeugen, dessen bekannte Entfernung und Relativgeschwindigkeit zur Überprüfung der Funktion des Radarsystems von letzterem ermittelt wird. Hierzu umfasst das Radarsystem mindestens eine akustische Sendeeinrichtung zur Erzeugung des akustischen Wellenfelds.Of the The core of the invention is, with the help of an acoustic wave field to create an artificial target whose known distance and relative speed for checking the Function of the radar system is determined by the latter. Includes the radar system at least one acoustic transmitting device for Generation of the acoustic wave field.
Ein Ultraschallsender eignet sich hierfür besonders gut, da die von diesem erzeugten Frequenzen für das menschliche Ohr nicht wahrnehmbar sind. Außerdem führen die hohen Frequenzen zu kurzen Wellenlängen, wodurch die Genauigkeit des Systems verbessert wird.One Ultrasonic transmitter is particularly well suited for this because the frequencies generated by this for the human Ear are imperceptible. In addition, the lead high frequencies to short wavelengths, reducing the accuracy the system is improved.
Vorzugsweise ist die Frequenz des akustischen Signals variabel. Hierdurch wird sichergestellt, dass die Reflexions-Bedingung zuverlässig erreicht werden kann.Preferably the frequency of the acoustic signal is variable. This will Ensures that the reflection condition is reliable can be achieved.
Ein Sender mit einer bestimmten Richtcharakteristik verringert die Störung der Umgebung außerhalb eines bestimmten Sektors. Dies wird besonders einfach durch die Anordnung zweier, voneinander beabstandet angeordneter, akustischer Sender erreicht.One Transmitter with a specific directional characteristic reduces the interference the environment outside of a particular sector. this will particularly easy by the arrangement of two, spaced from each other arranged, reached acoustic transmitter.
Vorzugsweise liegt die Frequenz des Radarsenders im für den Automobilbereich üblichen Bereich um 24 GHz oder 75 bis 79 GHz. Auch bereits bestehende Systeme können damit mit einer erfindungsgemäßen Vorrichtung zur Erkennung von Sensorblockaden nachgerüstet werden.Preferably is the frequency of the radar transmitter in the usual for the automotive sector Range around 24 GHz or 75 to 79 GHz. Also already existing systems can thus use an inventive Tool for detecting sensor blockages retrofitted become.
Bei einer akustischen Wellenlänge, welche gerade ein ganzzahliges Vielfaches der halben Radar-Wellenlänge ist, sind im akustischen Fernfeld die Bedingungen für eine Bragg-Reflexion erfüllt.at an acoustic wavelength, which is just an integer Multiples of half the radar wavelength are in the acoustic Far field meets the conditions for a Bragg reflection.
Weitere Sensoren zur Erfassung mindestens eines Parameters, welcher die Ausbreitung des akustischen Wellenfelds beeinflusst, können die Zuverlässigkeit und Genauigkeit des Systems weiter verbessern.Further Sensors for detecting at least one parameter, which the Propagation of the acoustic wave field can affect further improve the reliability and accuracy of the system.
Ein Fahrerassistenzsystem mit einem derartigen Radarsystem trägt zu einer erhöhten Sicherheit bei.One Driver assistance system with such a radar system carries to increased safety.
Das Aussenden einer Folge linearer Frequenzrampen ist für die Weiterverarbeitung des registrierten Signals besonders vorteilhaft.The Emitting a sequence of linear frequency ramps is for the Further processing of the registered signal particularly advantageous.
Für die Weiterverarbeitung ist vorzugsweise eine eigene Signalverarbeitungseinrichtung vorgesehen. Hierbei handelt es sich vorzugsweise um eine digitale Signalverarbeitungseinrichtung.For the further processing is preferably a separate signal processing device intended. This is preferably a digital one Signal processing device.
Eine schnelle Fourier-Transformation (Fast-Fourier-Transformation FFT) ist zur digitalen Verarbeitung des Signals besonders effizient.A Fast Fourier Transformation (Fast Fourier Transform FFT) is particularly efficient for the digital processing of the signal.
Aus der Bestimmung eines die Ausbreitung des akustischen Wellenfeldes charakterisierenden Parameters kann auf einfache Weise auf die Funktionsfähigkeit des Radarsystems rückgeschlossen werden.Out the determination of the propagation of the acoustic wave field Characterizing parameter can easily affect the functionality be inferred from the radar system.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der Beschreibung eines Ausführungsbeispiels anhand der Zeichnungen. Es zeigen:Further Advantages, features and details of the invention will become apparent the description of an embodiment with reference to Drawings. Show it:
Ein
Radarsystem
Die
Radareinrichtung
Die
Radarsendeantenne
Zur
Erzeugung elektromagnetischer Strahlung umfasst die Radareinrichtung
Des
Weiteren umfasst das Radarsystem
Die
als Richtantennen ausgebildeten Schallwandler
Aufgrund
der parallelen Ausrichtung der Schallwandler
Erfindungsgemäß ist
vorgesehen, dass mittels der Akustik-Signalerzeugungseinrichtung
Außerdem
umfasst das Radarsystem
Der
Zirkulator
Außerdem
können Sensoren
Das
Radarsystem
Im
Folgenden wird die Funktionsweise des Radarsystems
Das
ausgesandte Wellenfeld
Dies
wird mehrfach wiederholt, wobei für jede Frequenzrampe
Die
Digitalisierung des Signals im A-D-Wandler
Im
digitalisierten Basisbandsignal werden mit einer ersten Fensterung
Die
Ergebnisse einer Serie von aufeinanderfolgenden Entfernungs-FFT
Durch
zeilenweises Auslesen des Puffers
Das
Dopplerspektrum
Es
kann vorkommen, dass das Dopplerspektrum
Bei
einer Frequenz des elektromagnetischen Wellenfelds
Durch
die Anordnung und phasengleiche Ansteuerung der beiden Schallwandler
Im
Fernfeld sind somit die Bedingungen für eine Bragg-Reflexion
des elektromagnetischen Wellenfelds
Im
Falle einer Blockierung der Radareinrichtung
Im
Folgenden werden weitere, alternative Ausführungsformen
beschrieben. In einer ersten alternativen Ausführungsform
weist das akustische Wellenfeld
In
einer weiteren Alternative wird die Frequenz des akustischen Wellenfelds
Selbstverständlich
kann die Radareinrichtung
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - WO 2008/040341 A1 [0002] - WO 2008/040341 A1 [0002]
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009008528A DE102009008528A1 (en) | 2009-02-11 | 2009-02-11 | Radar system for use in driver assistance system of e.g. airplane, has signal processing device evaluating signal received by radar receiving antenna, and comprising directional transmitter and two sound converters |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009008528A DE102009008528A1 (en) | 2009-02-11 | 2009-02-11 | Radar system for use in driver assistance system of e.g. airplane, has signal processing device evaluating signal received by radar receiving antenna, and comprising directional transmitter and two sound converters |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102009008528A1 true DE102009008528A1 (en) | 2010-08-12 |
Family
ID=42317557
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102009008528A Withdrawn DE102009008528A1 (en) | 2009-02-11 | 2009-02-11 | Radar system for use in driver assistance system of e.g. airplane, has signal processing device evaluating signal received by radar receiving antenna, and comprising directional transmitter and two sound converters |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102009008528A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4656481A (en) * | 1984-08-02 | 1987-04-07 | Rca Corporation | Calibration instrument for continuous wave microwave doppler radar |
WO2008040341A1 (en) | 2006-10-06 | 2008-04-10 | Adc Automotive Distance Control Systems Gmbh | Radar system for detecting surroundings with compensation of interfering signals |
DE102007001057A1 (en) * | 2007-01-03 | 2008-07-10 | Thiermann, Volker, Dipl.-Meteor. Dr. | Radio acoustic wind profiler for measurement of two or three dimensional vectors of e.g. wind speed, has acoustic antennas sending acoustic waves in alternate spatial directions, where electromagnetic waves run to backscattering directions |
-
2009
- 2009-02-11 DE DE102009008528A patent/DE102009008528A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4656481A (en) * | 1984-08-02 | 1987-04-07 | Rca Corporation | Calibration instrument for continuous wave microwave doppler radar |
WO2008040341A1 (en) | 2006-10-06 | 2008-04-10 | Adc Automotive Distance Control Systems Gmbh | Radar system for detecting surroundings with compensation of interfering signals |
DE102007001057A1 (en) * | 2007-01-03 | 2008-07-10 | Thiermann, Volker, Dipl.-Meteor. Dr. | Radio acoustic wind profiler for measurement of two or three dimensional vectors of e.g. wind speed, has acoustic antennas sending acoustic waves in alternate spatial directions, where electromagnetic waves run to backscattering directions |
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
R005 | Application deemed withdrawn due to failure to request examination |