WO2016096198A1 - Système radar, procédé de génération d'un signal d'émission pour un système radar et véhicule - Google Patents

Système radar, procédé de génération d'un signal d'émission pour un système radar et véhicule Download PDF

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Publication number
WO2016096198A1
WO2016096198A1 PCT/EP2015/074132 EP2015074132W WO2016096198A1 WO 2016096198 A1 WO2016096198 A1 WO 2016096198A1 EP 2015074132 W EP2015074132 W EP 2015074132W WO 2016096198 A1 WO2016096198 A1 WO 2016096198A1
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WO
WIPO (PCT)
Prior art keywords
frequency
signal
ramps
radar
signal sequences
Prior art date
Application number
PCT/EP2015/074132
Other languages
German (de)
English (en)
Inventor
Stefan Heilmann
Michael Schoor
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 WO2016096198A1 publication Critical patent/WO2016096198A1/fr

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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
    • 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
    • G01S13/343—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 using sawtooth modulation
    • 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
    • G01S7/023—Interference mitigation, e.g. reducing or avoiding non-intentional interference with other HF-transmitters, base station transmitters for mobile communication or other radar systems, e.g. using electro-magnetic interference [EMI] reduction techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/023—Interference mitigation, e.g. reducing or avoiding non-intentional interference with other HF-transmitters, base station transmitters for mobile communication or other radar systems, e.g. using electro-magnetic interference [EMI] reduction techniques
    • G01S7/0232—Avoidance by frequency multiplex
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/023—Interference mitigation, e.g. reducing or avoiding non-intentional interference with other HF-transmitters, base station transmitters for mobile communication or other radar systems, e.g. using electro-magnetic interference [EMI] reduction techniques
    • G01S7/0235—Avoidance by time multiplex
    • 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
    • G01S13/87—Combinations of radar systems, e.g. primary radar and secondary radar
    • 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
    • G01S2013/93272—Sensor installation details in the back of the vehicles

Definitions

  • the present invention relates to a radar system, a method for generating a transmission signal for a radar system and a corresponding vehicle.
  • Brake assistants can detect drivers driving ahead and decelerate and accelerate the vehicle accordingly, so that a predetermined minimum distance to the preceding road users is always maintained. Such brake assistants may also initiate emergency braking if they recognize that the distance to the preceding vehicle is too low.
  • Further driver assistance systems can also observe the area behind the vehicle and warn the driver of an approaching vehicle, for example in the case of a lane change detected by setting the turn signal, or for example prepare the vehicle restraint systems, such as belt tensioners, if an imminent one Impact at the rear of the vehicle is detected.
  • vehicle restraint systems such as belt tensioners
  • a brake assist it is necessary, for example, to detect the position of a preceding road user in order to be able to calculate the distance of the vehicle to the preceding road user or to record the distance to the preceding road user.
  • To capture the vehicle environment different sensor types can be used.
  • radar sensors ultrasonic sensors, cameras or the like can be used.
  • FMCW radar sensors are usually used in vehicles for detecting the vehicle environment.
  • the probability that the individual radar sensors interfere with each other increases. Therefore, it is usually attempted to reduce the probability and intensity of such disturbances. This can be achieved, for example, by selecting suitable center frequencies, polarizations of the antennas and, for example, variable cycle times.
  • the output signals of the radar sensors can be cured in the time domain, for example to remove spikes in the time signal, which lead to a broadband noise increase in the output signal and thus to a desensitization of the radar.
  • Another way to suppress interference for example, can be a suitable beam shaping.
  • the present invention discloses a radar system having the features of claim 1, a method having the features of claim 9 and a vehicle having the features of claim 15.
  • a radar system comprising at least one radar sensor having a signal generator configured to generate a frequency-modulated transmit signal having at least two signal sequences each having successive ramps in the frequency response with gaps therebetween, the signal generator being configured to provide at least two signal sequences with one temporally interleaved predetermined time offset, each having a first ramp of each of the at least two signal sequences is output without overlapping the ramps before a second ramp of one of the at least two signal sequences is output, the signal generators of the radar sensors are formed, the frequenzmo- To generate dulled transmit signal such that the ramps for the respective signal sequences each have the same slope.
  • a method for generating a transmission signal for a radar system comprising generating at least one frequency-modulated transmission signal having at least two signal sequences, each having successive ramps in the frequency response with gaps therebetween, wherein for each of the at least two signal sequences in each case a slope for the ramps is predetermined time-arranging the at least two signal sequences in the frequency-modulated transmission signal at a predetermined time offset such that a first ramp of each of the at least two signal sequences is output without an overlap of the ramps before a second ramp of one of the at least two signal sequences is output, and outputting the frequency modulated transmit signal.
  • a vehicle with a radar system according to the invention wherein the radar system has in particular two radar sensors, which in particular generate frequency-modulated transmission signals in different frequency bands.
  • the slopes can be identical. This causes a sinus in the entire time signal and can thus act as a real target. This type of interference generally does not lead to desensitization but can lead to the detection of non-existent goals, so-called ghost targets.
  • the underlying realization of the present invention is that when identical slopes of the ramps are used for the frequency response of the signal sequences of different radar sensors used to form the transmit signal, the first two of the interference types mentioned do not occur.
  • all the radar sensors of the radar system for the signal sequences each use the same slopes of the ramps for the frequency response.
  • the interference which are caused by the same gradients, can occur according to the invention increasingly. However, these can be eliminated again by different predetermined time offsets between the ramps of the individual signal sequences.
  • each of the radar sensors is designed to have the corresponding fre- generate frequency-modulated transmit signal in each case in one of the predetermined frequency bands.
  • the use of equal predetermined slopes leads to a limitation in the design of radar systems in terms of sensor design and the possible field of view of the radar sensors. By introducing different frequency bands, the possibilities for designing the radar sensors will be expanded again.
  • a slope for the ramps of each of the signal sequences is predetermined in each of the frequency bands. If only ramps of the same slope are used in the frequency bands for the respective signal sequences, a broadband desensitization of the radar sensors is prevented even when using a plurality of frequency bands.
  • At least two radar sensors are provided and each of the radar sensors is configured to use another predetermined one of the frequency bands for the frequency-modulated transmission signal. As a result, interference between the radar sensors of different types can be completely avoided.
  • At least two types of radar sensors are provided, and each of the types of radar sensors is configured to utilize a plurality of frequency bands for the frequency modulated transmission signal. This makes it possible to use a radar sensor in different frequency bands and the respective radar sensor e.g. flexible to adapt to different requirements by switching.
  • the at least two radar sensors have a configuration interface which is designed to obtain a selection of the respective frequency band to be used for the frequency-modulated transmission signal, wherein the at least two radar sensors are configured, the frequency-modulated transmission signal in each case in that specified by the selection Generate frequency band. If the radar sensors can be specified externally, which of the frequency bands they are to use, it is possible, for example. The function of the individual radar sensors can be flexibly adjusted by a central vehicle control.
  • the at least two radar sensors are designed to output the frequency-modulated transmission signal with a predetermined duty cycle. This further reduces the probability of the occurrence of interferences, which can occur with equal slopes of the ramps.
  • the at least two radar sensors are designed to generate the frequency-modulated transmission signal according to at least two different modulation sets, wherein each of the modulation sets in each case for each of the signal sequences in each case a time interval between the ramps and / or a time shift between the ramps of the individual Indicates signal sequences. This also reduces the likelihood of interference that can occur with equal slopes of the ramps.
  • the above embodiments and developments can, if appropriate, combine with each other as desired.
  • FIG. 1 shows a block diagram of an embodiment of a radar system according to the invention
  • FIG. 2 shows a flow chart of an embodiment of a method according to the invention
  • FIG. 3 is a block diagram of an embodiment of a vehicle according to the invention.
  • FIG. 1 shows a block diagram of an embodiment of a radar system 1 according to the invention.
  • the radar system 1 of FIG. 1 has a radar sensor 2 with a signal generator 3.
  • the signal generator 3 generates a frequency-modulated transmission signal 4 which is transmitted from the radar sensor 2 e.g. is emitted via a radar antenna 20.
  • the transmission signal 4 is generated in FIG. 1 from two signal sequences 5-1, 5-2. In this case, each of the signal sequences 5-1, 5-2 has successive ramps 9-1 in the frequency curve
  • the signal generator 3 interleaves the two signal sequences 5-1, 5-2 with a predetermined time offset 8 for each of the two signal sequences 5-1, 5-2 in such a way that a respective first ramp 9-1 - 9-3, 10 1 - 10-3, each of the at least two signal sequences 5-1, 5-2 is output before a second ramp 9-1 - 9-3, 10-1 - 10-3 of one of the two signal sequences 5-1, 5-2 is issued.
  • the time offset is chosen so large that at least no overlap of the ramps 9-1
  • the predetermined time offset 8 is of different lengths for each of the signal sequences 5-1, 5-2. This means that the pauses after the ramps of the first signal sequence 5-1 are longer or shorter than the pauses after the ramps of the second signal sequence 5-2.
  • a center frequency may be predetermined for the ramps of each of the signal sequences 5-1, 5-2. In this case, the center frequency for the ramps of the first signal sequence 5-1 may be greater or smaller than the center frequency for the ramps of the second signal sequence 5-2. In a further embodiment, the center frequencies may also be the same.
  • a radar sensor 2 is shown by way of example only. Of course, the radar system 1 may comprise a plurality of radar sensors 2, the structure of which is similar in principle to that of the radar sensor 2 shown in FIG. 1.
  • the signal generators 3 of the different radar sensors 2 are then all designed to generate the frequency-modulated transmission signal 4 such that for each of the two signal sequences 5-1, 5-2 an equal gradient for the ramps 9-1 - 9-3, 10 -1 - 10-3 is used. All radar sensors 2 thus use a first slope for the first signal sequence 5-1 and a second slope for the second signal sequence 5-2, which equals the slope for the first signal sequence 5-1.
  • the radar sensors 2 of the radar system 1 according to the invention can be arranged, for example, in a single vehicle 15. For example, one of the radar sensors 2 may be directed forward from the vehicle 15, while a second of the radar sensors 2 may be directed rearward, for example, from the vehicle 15.
  • the radar sensors 2 of the radar system 1 according to the invention can also be arranged in different vehicles 15.
  • the radar sensors 2 may be installed, for example, as forward-facing front sensors in the respective vehicles 15, but this is not absolutely necessary. If the radar sensors 2 according to the invention are used in different vehicles 15, desensitizations between the radar sensors 2 of different vehicles 15 in traffic can be avoided. The more radar sensors 2 with the same slope for the ramps 9-1 - 9-3, 10-1 - 10-3 of the individual signal sequences 5-1, 5-2 are used, the less desensitization occur. At least no further desensitizations of the radar sensors 2 are caused by the newly used inventive radar sensors 2.
  • the further interferences occurring, which can occur with equal slopes of the ramps, are virtually eliminated by the measures according to the invention of a plurality of signal sequences 5-1, 5-2 with, for example, different time offsets 8.
  • the transmission signals 4 can be constructed from more than two signal sequences 5-1, 5-2. Accordingly, the individual signal sequences 5-1, 5-2 can have longer gaps 7-1 - 7-6, so that in each case one ramp 9-1 - 9-3, 10-1 - 10-3 of all signal sequences 5-1, 5 2 in the corresponding gap 7-1 - 7-6 fits.
  • Radar sensors 2 in addition to the radar antenna 20 via a mixer for mixing the emitted and the received radar signal, which outputs a baseband signal.
  • the baseband signal can then be picked up by suitable signal processing, eg digitized, and processed to detect objects in the area detected by the respective radar sensor 2, 2-1-2-2-2.
  • FIG. 2 shows a flow chart of an embodiment of a method according to the invention.
  • the method according to the invention can be used to generate a transmission signal 4; 4-1 - 4-2 are used for a radar system 1.
  • generating S1 is at least one frequency-modulated transmission signal 4; 4-1 - 4-2 provided with at least two signal sequences 5-1 - 5-2, which in each case in the frequency curve successive ramps 9-1 - 9-3, 10-1 - 10-3 with intervening gaps 7-1 - 7-6.
  • an incline for the ramps 9-1 - 9-3, 10-1 - 10-3 is predefined for each of the at least two signal sequences 5-1 - 5-2. All transmission signals 4; 4-1 - 4-2 consequently each have the same slopes for the ramps 9-1 - 9-3, 10-1 - 10-3 in the individual signal sequences 5-1 - 5-2.
  • the first ramps 9-1 - 9-3, 10-1 - 10-3 of all signal sequences 5-1 - 5-2 are output one after the other.
  • the second ramps 9-1 - 9-3, 10-1 - 10-3 of all signal sequences 5-1 - 5-2 are output, and so on.
  • the frequency modulated transmit signal 4; 4-1 - 4-2 output, S3.
  • the frequency-modulated transmission signal 4; 4-1 - 4-2 are output eg via a suitable radar antenna 20, 20-1, 20-2.
  • the method in addition to outputting the frequency-modulated transmission signal 4; 4-1 - 4-2 eg also a received radar signal with the transmitted frequency-modulated transmission signal 4; 4-1 - 4-2 to obtain corresponding baseband signals.
  • the baseband signals may be further processed to detect, for example, objects in the area detected by the respective radar sensor 2, 2-1-2-2-2.
  • two or more non-overlapping frequency bands can be predetermined, which the frequency-modulated transmission signals 4; 4-1 - 4-2.
  • the term "use” means that the frequency-modulated transmission signals 4, 4-1, 4-2 are generated in one of the predetermined frequency bands Alternatively, there may be gaps in the overall frequency spectrum between the given frequency bands.
  • an incline for the ramps 9-1 - 9-3, 10-1 - 10-3 of each of the signal sequences 5-1 - 5-2 is predefined in each of the frequency bands.
  • the design possibilities in the sensor design are limited. In particular, e.g. microelectronic devices used in the radar sensors 2; 2-1, 2-2, available only at preset sample rates.
  • the distance-dependent part of the FMCW formula describes the relationship between the detectable distance d and the baseband frequency, where s is the slope of the ramps and c is the speed of light:
  • the visual range in each of the frequency bands can be flexibly adjusted by a suitable choice of the respective slope.
  • At least two frequency modulated transmit signals 4; 4- 1 - 4-2 are each generated in another of the predetermined frequency bands.
  • one of the frequency-modulated transmission signals 4; 4-1 - 4-2 in a first frequency band 1 1 -1 - 1 1 -3 are generated to detect objects in a smaller maximum distance, as a second of the frequency-modulated signals 4; 4-1 - 4-2 in a second frequency band 1 1 -1 - 1 1 -3.
  • the first of the frequency modulated signals 4; 4-1 - 4-2 are used for radar sensors 2, 2-1 - 2-2, which are arranged at the rear of a vehicle 15 and the second of the frequency-modulated signals 4; 4-1 - 4-2 are used for radar sensors 2, 2-1 - 2-2, which are arranged at the front of the corresponding vehicle 15.
  • the frequency-modulated transmit signal 4; 4-1 - 4-2 output with a predetermined duty cycle 13.
  • the respective frequency-modulated transmission signal 4; 4-1 - 4-2 is therefore output cyclically in transmission cycles only to a certain time proportion, eg 50%.
  • frequency modulated transmit signals 4; 4-1 - 4-2 are generated according to at least two different modulation sets 14-1 - 14-2.
  • Each of the modulation sets 14-1 - 14-2 gives an incline for the ramps 9-1 - 9-3 for each of the signal sequences 5-1 - 5-2, 10-1 - 10-3 in the frequency response and / or a time interval between the ramps 9-1 - 9-3, 10-1 - 10-3 or the period of the respective transmission signal 4, 4-1 - 4-2 and / or a time shift between the ramps 9-1 - 9-3, 10-1 - 10-3 of the individual signal sequences 5-1 - 5-2.
  • the probability of occurrence for a ghost target is further drastically reduced.
  • the present invention makes it possible to almost eliminate the occurrence of ghost targets.
  • the method according to the invention can e.g. be used with a radar system 1 according to the invention in a vehicle 15 according to the invention, as shown in connection with FIG.
  • FIG. 3 shows a block diagram of an embodiment of a vehicle 15 according to the invention.
  • the vehicle 15 has a radar system 1 (not separately designated) which has two radar sensors 2-1, 2-2.
  • a radar system 1 (not separately designated) which has two radar sensors 2-1, 2-2.
  • one of the radar sensors 2-1 is directed forward from the vehicle 15 and one of the radar sensors 2-2 is directed from the vehicle 15 to the rear.
  • Each of the radar sensors 2-1, 2-2 may have a configuration interface 12-1, 12-2 via which, for example, a modulation set 14-1, 14-2 can be selected in the respective radar sensor 2-1, 2-2.
  • a duty cycle 13-1, 13-2 is stored in each of the radar sensors 2-1, 2-2, which can be predetermined or likewise can be set via the respective configuration interface 12-1, 12-2.
  • the present invention provides the advantages already mentioned with regard to FIG. 2 with regard to the probability of occurrence of ghost targets.
  • the arrangement and the number of radar sensors 2-1, 2-2 is merely exemplary and may differ from the arrangement shown in FIG. 3 in further embodiments.

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

L'invention concerne un système radar ayant au moins un capteur de radar qui comprend un générateur de signaux qui est conçu pour générer un signal d'émission modulé en fréquence avec au moins deux séquences de signaux qui comportent chacune, dans la courbe de fréquences, des rampes successives séparées par des intervalles vides. Le générateur de signaux est conçu pour imbriquer lesdites séquences de signaux temporellement les unes dans les autres avec un décalage temporel prédéfini de sorte qu'une première rampe de chacune desdites séquences de signaux est délivrée sans chevauchement des rampes avant qu'une deuxième rampe d'une desdites séquences de signaux soit délivrée. Chaque capteur de radar est conçu pour émettre un signal d'émission modulé en fréquence avec lequel chacune desdites séquences de signaux a une même pente prédéfinie pour les rampes. L'invention concerne en outre un procédé de génération d'un signal d'émission pour un système radar et un véhicule.
PCT/EP2015/074132 2014-12-16 2015-10-19 Système radar, procédé de génération d'un signal d'émission pour un système radar et véhicule WO2016096198A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014226127.9A DE102014226127A1 (de) 2014-12-16 2014-12-16 Radarsystem, verfahren zum erzeugen eines sendesignals für ein radarsystem und fahrzeug
DE102014226127.9 2014-12-16

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WO2016096198A1 true WO2016096198A1 (fr) 2016-06-23

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