Method for identifying at least one interfering influence on the radar detection in a vehicle

Abstract

The invention relates to a method (100) for identifying at least one interfering influence on the radar detection in a vehicle (5), comprising: - receiving (101) radar data which are acquired by at least one radar device (40) of the vehicle (5) in at least one acquisition region (8), - processing (102) at least the received radar data on the basis of interference identification in which at least one previously identified interference signature is analyzed in order to identify the at least one interfering influence, - performing (103) the radar detection on the basis of the radar data, - initiating (104) at least one vehicle function on the basis of the performed radar detection.

Description

[0001] Applicant:

[0002] Huf Hülsbeck & Fürst GmbH & Co. KG

[0003] Description

[0004] Method for detecting at least one interference affecting radar detection in a vehicle

[0005] The present invention relates to a method for detecting at least one source of interference affecting radar detection in a vehicle. The invention further relates to a radar device, a computer program, and a data processing device.

[0006] State of the art

[0007] It is known from the prior art that radar detection in vehicles can be impaired by various sources of interference. Examples of such interference include incorrect operation, electromagnetic interference, multipath effects, and environmental influences such as rain or fog.

[0008] Several methods are known to reduce such interference. However, conventional approaches have limitations in certain situations, particularly when using radar sensors for a vehicle access system.

[0009] Disclosure of the invention

[0010] It is therefore an object of the present invention to at least partially overcome the disadvantages described above. In particular, it is an object of the present invention to provide an improved radar device and signal processing for the use of radar sensors in a vehicle access system.

[0011] The invention relates to a method with the features of claim 1, a radar device with the features of claim 15, a computer program with the features of claim 16, and a device with the features of claim 17. Further features and details of the invention will become apparent from the respective dependent claims, the description, and the drawings. Features and details described in connection with the method according to the invention naturally also apply in connection with the radar device, the computer program, and the device according to the invention, and vice versa, so that mutual reference is always possible with regard to the disclosure of the invention.

[0012] The invention relates in particular to a method for detecting at least one interference with radar detection in a vehicle.

[0013] The vehicle can be designed, for example, as a motor vehicle and / or passenger vehicle and / or truck and / or at least partially autonomous vehicle.

[0014] The method can include: receiving radar data resulting from the detection of at least one radar device of the vehicle within at least one detection area. The detection area can, for example, extend to the exterior of the vehicle in front of doors and / or hatches. This is particularly advantageous when the method is used to operate a vehicle access system. Alternatively or additionally, the detection area can extend to an area in front of a door handle or bumper. In this case, only a smaller portion of the vehicle's exterior is detected, allowing objects in the immediate vicinity of the door handle or bumper to be recognized by the method. This is advantageous, for example, when a gesture in front of the door handle or bumper needs to be detected.

[0015] Furthermore, the detection range can be smaller than the radar's field of view. The radar can use radar sensors suitable for detecting distant objects. However, the detection range can be reduced and focused on the desired area of ​​interest by appropriately configuring the radar. This allows for the targeted detection of movements and, in particular, gestures in close proximity to the vehicle, for example, to control vehicle functions.

[0016] Furthermore, the process can include processing at least the received radar data based on interference detection. Interference detection can involve evaluating at least one previously determined interference signature to identify at least one source of interference. The interference signature is, for example, a digitally stored signature recorded when an interference event is detected.

[0017] Furthermore, the method can include performing radar detection based on the radar data. This can, for example, include evaluating the received radar data with regard to radar signal parameters such as frequency changes, amplitude changes, phase shifts, Doppler shifts, time delays, signal strength, polarization, and / or spectral width. Radar detection can thus be performed - P2024088DEWÖ -

[0018] 3. They serve to detect objects and / or movements and / or gestures and / or to determine the speed of objects and / or to calculate the distance to objects and / or to estimate the size and / or material properties of objects and / or to determine the orientation and shape of objects and / or to analyze the relative movement and / or structure of objects.

[0019] Furthermore, the process can subsequently include initiating at least one vehicle function based on the radar detection. In other words, one of the vehicle functions can be activated and / or selected depending on whether predefined conditions are met during radar detection (such as detecting a specific gesture). The at least one vehicle function is, for example, at least one of the following: unlocking and / or locking, door opening and / or door closing, opening and / or closing a flap, such as a tailgate, automatic emergency braking, lane keeping assist control, adaptive cruise control control, parking assist system control, and / or pedestrian detection control.

[0020] Furthermore, according to the invention, radar detection and / or the initiation of at least one vehicle function can be carried out based on a processing result (i.e., the processing step), specifically based on a processing result of at least the received radar data based on interference detection. This significantly increases the safety of the vehicle system, as false triggering of the vehicle function(s) due to interference can be more reliably avoided.

[0021] It is possible that the initiation of at least one vehicle function is based on the processing result, taking interference detection into account. For example, initiation may be suppressed if the processing result indicates interference. In other words, the initiation of one or more vehicle functions may depend on a result of radar detection and on a result of processing or interference detection.

[0022] It is also conceivable that radar detection is performed based on the processing results, taking interference detection into account. In other words, it is conceivable that radar detection uses the results of interference detection for detection – for example, of gestures. One possibility for this is to compensate for interference in the radar data using the processing results. In this case, a positive detection result may be achieved despite interference, which would then allow the vehicle function to be initiated. - P2024088DEWÖ -

[0023] 4

[0024] Furthermore, it is conceivable that, depending on the fault detection, at least one vehicle function intended for the event of a fault is initiated and / or at least one vehicle function is adapted when the fault influence is detected.

[0025] It may optionally be possible to execute the method at least when the vehicle is stationary, in order to detect at least one gesture performed outside the vehicle, particularly via radar detection. This allows the inventive method and radar device to be used for a vehicle access system. For example, depending on the type of detected gesture, various vehicle functions—in this case, functions of the access system—can be initiated. This can include unlocking, locking, and / or automatic opening and / or closing. The opening and / or closing can also include a driven movement of the vehicle's flaps and / or doors. Similarly, an actuator, such as an electric motor, can be controlled when initiating the vehicle function.

[0026] Radar sensors may be provided, which are at least partially part of the radar device and / or connected to it, and which can be used for radar detection. The radar sensors may also have a primary function, such as detecting road users, which thus differs from gesture detection. Accordingly, the radar sensors may also perform gesture detection only as a secondary function. For example, it is conceivable that the radar sensors could serve as a replacement or supplement for a capacitive sensor system in the vehicle.

[0027] Radar detection can potentially detect at least one gesture performed outside the vehicle. The recognition of this gesture can serve as an activation trigger for an access control system, with the execution of the radar detection and / or the initiation of at least one vehicle function depending on the activation trigger. Thus, it is conceivable that a positive detection of a user gesture within a detection range could initiate a vehicle function associated with that gesture.

[0028] It is also possible that a wake-up signal is sent to an ID transmitter before or during the initiation of at least one vehicle function to initiate authentication. Authentication can serve as a further prerequisite for initiating a vehicle function of the access system, such as unlocking and / or opening a door. After successful authentication, a signal is sent, for example, to the vehicle's control electronics to execute the corresponding vehicle function. Additionally - P2024088DEWG -

[0029] 5. Additional security measures, such as biometric data verification or PIN code entry, can be integrated to increase the security of the access system. A combination of different authentication methods can also be used to ensure multi-stage security verification.

[0030] Authentication using a user ID can be performed in various ways, with the ID being either a smartphone or an electronic key. One possibility is that the ID being equipped with an NFC chip, which is recognized by the vehicle using an NFC reader. The identification data is then transmitted contactlessly, for example, via NFC in close proximity, to the vehicle's control unit to verify authentication. Another method is the use of a wireless connection such as Bluetooth or Bluetooth Low Energy. Furthermore, an encrypted signal can be sent to the vehicle for authentication, which is then decrypted and verified by the receiver in the vehicle. The security of the authentication system can be further enhanced by employing strong encryption algorithms and / or an interface for regularly updating the cryptographic keys.

[0031] Another possibility is to prevent the initiation of the vehicle function if the processing result indicates the presence of a disturbance. This can prevent false triggering. In particular, a prerequisite for preventing, or blocking, the initiation could be that the disturbance exceeds a certain threshold.

[0032] In the inventive method, it is also conceivable that, based on the processing results, a detection period and / or a detection cycle and / or a detection frequency is adjusted during detection by the radar device, for example, to adjust the detection sensitivity. That is, depending on the interference detection, a high or low sensitivity level can be selected, depending on whether a high false positive rate is tolerable or not. Therefore, for example, the method can be designed such that the detection period of the radar device is longer in a first operating state than in a second operating state. Likewise, interference detection can be performed more frequently in a first operating state than in a second operating state, resulting in a higher or lower sensitivity for interference detection. The detection period is, for example,The time required to perform radar and preferably gesture detection. - P2024088DEWQ -.

[0033] 6

[0034] It is also conceivable that the initiation of at least one vehicle function depends on a state parameter of the vehicle, which is particularly specific to a stationary state of the vehicle, preferably in the form of or based on a vehicle speed. This can serve to limit the execution of the method to the stationary state of the vehicle. Furthermore, this allows the vehicle's radar sensors to be used exclusively or additionally for applications when the vehicle is stationary. This can, for example, permit the additional use of the radar sensors for an access control system. It is conceivable that an existing radar sensor system of the vehicle, which is also used for object or obstacle detection while the vehicle is in motion, could be used for radar detection. In this way, additional sensors could potentially be omitted, and the radar signal could instead be used directly for the detection of, for example, obstacles.Gestures are evaluated while the vehicle is stationary. This results in a reduction of the vehicle's costs and / or weight.

[0035] According to an advantageous embodiment of the invention, the at least one or more interference signatures can specify an operating error and / or interference affecting the vehicle. The operating error and / or interference can include at least one of the following:

[0036] A movement during the cleaning of the vehicle,

[0037] A leg movement in the area of ​​the tailgate or bumper,

[0038] An accidental touch or approach to the door handle,

[0039] Movements of animals in the vicinity of the vehicle,

[0040] Vibrations caused by external sources such as construction sites or passing trucks,

[0041] Interference from nearby electronic devices or vehicles,

[0042] Weather-related influences such as strong winds, rain, snow or snowdrifts.

[0043] The method according to the invention allows such a malfunction to be reliably detected based on the interference signatures. Furthermore, a comparison with the respective interference signature can determine whether the malfunction is due to incorrect operation or an external interference, and a corresponding function can be triggered.

[0044] It is also conceivable that the radar device incorporates and / or is connected to the vehicle's radar sensors. The radar sensors may include one or more transmitters and / or one or more receivers, which operate simultaneously or over time. - P2024088DEWG -

[0045] The radar system can use seven sensors sequentially for detection. Furthermore, the detection signal acquired by the radar system can be implemented as an echo signal and / or a received signal. The detection signals can be converted into radar data by an analog-to-digital converter and subsequently processed and analyzed to identify and classify interference. Advanced signal processing and pattern recognition algorithms can be employed to increase the reliability of this analysis. Additionally, the radar system can communicate with a central vehicle control unit to make adaptive adjustments and modify the sensitivity of the radar sensors in real time. This helps to minimize the effects of interference and optimize the accuracy of radar detection under various environmental conditions and driving situations.

[0046] Preferably, the at least one or more interference signatures can each be implemented as the signature of one or more incorrect operating gestures. The radar detection can be implemented as gesture detection. For gesture recognition, the received radar data can be processed to indicate not only the distance and / or direction of an object, but also information about the object's shape and / or direction of movement. This additional information can also be used to detect interference and, in particular, to distinguish incorrect operation from the desired normal operation.

[0047] Furthermore, at least part of the interference content of an incorrect operating gesture can be stored in one or more interference signatures. This storage preferably takes place on a data carrier, such as a server and / or computer and / or microcontroller and / or vehicle control unit and / or mobile phone and / or the like.

[0048] Preferably, within the scope of the invention, the received radar data can be compared with the interference signatures during interference detection in order to identify at least one source of interference and, preferably, to block the initiation of the vehicle function upon positive detection of the interference. The interference signatures can result from a prior detection of incorrect operating gestures, in which at least one of the incorrect operating gestures is an alternating movement of a user's body part and at least one further incorrect operating gesture is a circular movement of a user's body part. In particular, it can be an incorrect operating gesture that is detected within the detection range of the radar sensors and could lead to a malfunction. In a further possibility, the interference detection can include at least:

[0049] Determining a signature in the received radar data,

[0050] Comparing the signature with one or more interference signatures,

[0051] Identifying a disturbance based on comparison.

[0052] This ensures reliability in fault detection.

[0053] Furthermore, it is conceivable that the radar device operates in an energy-saving mode and only switches to regular operation when a user request is detected by an object (such as a user approaching) and / or by receiving a wake-up signal. Alternatively, the vehicle's operation could be deactivated, e.g., in a parked state, while the radar device is repeatedly active for short periods to detect potential objects.

[0054] According to a further advantage, the at least one or more interference signatures can each be configured as noise signatures. This can serve to detect noise affecting radar detection, preferably caused by vehicle cleaning and / or rain and / or snow and / or humidity and / or dirt. In this way, it is possible to detect interference characterized by a type of noise in the radar signal. This offers the advantage of further improving the vehicle's radar sensor system.

[0055] A further advantage can be achieved within the scope of the invention if the at least one or more interference signatures result from a recording of the detection by the at least one radar device in a disturbance scenario. The disturbance scenario can preferably be vehicle cleaning and / or rain and / or snow and / or moisture and / or dirt and / or operator error. Furthermore, the recording can preferably be carried out at least partially automatically during a learning phase of the vehicle. In this way, the radar device can be designed to adapt to the respective environment and learn accordingly. For example, it is conceivable that a learning phase of the vehicle is carried out regularly over a period ranging from a few hours to several weeks or months. The disturbance scenario can, for example, also be operator error, such as accidentally touching / pressing the door handle or similar.Here, too, corresponding interference signatures are generated, which can be stored for detection purposes. It is conceivable that during a learning phase of the vehicle, a large number of radar data points are acquired and evaluated to identify interference signatures. Furthermore, within the scope of the invention, it is conceivable that the method is carried out at least while the vehicle is in motion, i.e., while driving. This can serve to detect at least one object outside the vehicle, preferably via radar detection, and / or to control a parking aid based on radar detection. This has the advantage that the radar detection can be used while driving. The parking aid is, for example, a display and / or a warning message for the driver of the vehicle. Furthermore, the parking aid can also include automated control of the vehicle, in particular braking and / or acceleration and / or steering.The initiation of at least one vehicle function based on the radar detection performed is therefore preferably carried out for control and / or by the parking aid.

[0056] It may be advantageous if, within the scope of the invention, the interference detection further includes:

[0057] Determining sensor data resulting from the detection of at least one other sensor, wherein the sensor data preferably indicate a movement of a user and / or a distance of the user and / or an identification device carried by the user,

[0058] Evaluating the collected sensor data to determine whether at least one interference factor is present,

[0059] Identifying a malfunction based on the evaluation.

[0060] In other words, this enables sensor fusion for interference detection. This allows for more reliable detection of interference.

[0061] It is also conceivable, as an option, that several parameters of the radar device are evaluated during processing to determine whether at least one interference signature is present. These parameters can include at least two of the following:

[0062] A speed,

[0063] A movement pattern,

[0064] A distance,

[0065] An angle, in particular an azimuth and / or an elevation and / or an angle of arrival,

[0066] A signal strength,

[0067] A frequency, - P2024088DEWG -

[0068] 10

[0069] A polarization,

[0070] A Doppler shift spectrum.

[0071] This allows for a wide variety of parameter combinations to be used to detect interference. This increases the reliability of the detection.

[0072] A further advantage is that aging information can be determined during processing. This aging information can be specific to age-related wear and / or the service life of the radar device. Detection of interference is then possible based on this aging information, particularly to compensate for aging effects. In this way, the vehicle's radar sensor system can be adapted to aging processes. Alternatively or additionally, the evaluation of at least one detected interference signature can be based on a reference signature, which in particular was determined at an earlier time. The reference signature and / or the interference signature preferably each contain one or more data points. These data points can, for example, represent one or more parameters required to describe the respective signature.Such a parameter could be, for example, an amplitude or a frequency. To counteract aging processes, repeated renewal of the reference signature can also be implemented.

[0073] The invention also relates to a radar device for radar detection in a vehicle. The radar device can further include a device for detecting at least one source of interference affecting the radar detection in the vehicle. This device, also referred to as a detection device, comprises, for example, a microcontroller or an electronic control unit. The detection device can also be designed as a system comprising one or more radar components.

[0074] The (detection) device of the radar device according to the invention can comprise: a receiver for receiving radar data resulting from detection by the radar device or radar sensors of the vehicle in at least one detection area, wherein the radar sensors can be at least partially part of the radar device and / or can also include further radar sensors of the vehicle; a processing device for processing at least the received radar data based on interference detection, in which at least one previously - P2024088DEWQ -

[0075] 11. The determined interference signature is evaluated in order to detect the at least one interference influence, wherein the at least one previously determined interference signature is stored, for example, in a data storage device of the detection device, an output device for initiating at least one vehicle function based on radar detection using the radar data and / or on the basis of a result of the processing, wherein an electrical signal is preferably output to the vehicle system for initiation.

[0076] The radar device according to the invention thus offers the same advantages as those described in detail with reference to a method according to the invention. Furthermore, the radar device can be suitable for operation according to a method according to the invention.

[0077] The invention also relates to a data processing device comprising means for carrying out the steps of the method according to the invention. Thus, the data processing device according to the invention offers the same advantages as those described in detail with reference to a method according to the invention.

[0078] The invention also relates to a computer program, in particular a computer program product, comprising instructions that, when executed by a computer, cause the computer to execute the method according to the invention. The computer program according to the invention thus offers the same advantages as those described in detail with reference to a method according to the invention. Furthermore, the computer program can be at least partially non-volatile and / or available as downloadable software and / or as a cloud service and / or as an executable program and / or as a configuration file and / or as a program library and / or as source code and / or in compiled and / or encrypted and / or compressed form and / or in a combination thereof.

[0079] The computer can be a data processing device, preferably the data processing device according to the invention.

[0080] The data processing device according to the invention, and preferably the computer, can be configured to execute the computer program according to the invention. For this purpose, the data processing device according to the invention can have at least one processor. A non-volatile data storage medium can also be provided in which the computer program is stored and from which the computer program can be read by the processor for execution. - P2024088DEWG -

[0081] 12

[0082] It is also conceivable that the data processing device according to the invention comprises at least one integrated circuit such as a microprocessor, an application-specific integrated circuit (ASIC), an application-specific standard product (ASSP), a digital signal processor (DSP), a field-programmable gate array (FPGA), or the like. The data processing device according to the invention can further comprise at least one interface for data exchange, e.g., an Ethernet interface, an interface for LAN (Local Area Network), WLAN (Wireless Local Area Network), a system-on-a-chip (SoC), or another radio interface such as for Bluetooth or near-field communication (NFC). Furthermore, the data processing device according to the invention can be implemented as one or more control units, i.e., also as a system of control units.The data processing device according to the invention can be fully or partially located in a cloud and / or configured as a server to provide data processing capabilities for a local application via an interface. Similarly, the data processing device according to the invention can also be configured as a distributed system. It is also possible for the data processing device according to the invention to be implemented as a mobile device, such as a smartphone.

[0083] The invention may also include a computer-readable storage medium comprising the computer program according to the invention. The storage medium is, for example, designed as a data storage device such as a hard drive and / or non-volatile memory and / or a memory card. The storage medium can, for example, be integrated into the computer and / or into the data processing device according to the invention.

[0084] Furthermore, the method according to the invention can also be implemented as a computer-implemented method. Alternatively or additionally, each or all of the disclosed method steps can optionally be computer-implemented and / or carried out automatically.

[0085] Further advantages, features, and details of the invention will become apparent from the following description, in which exemplary embodiments of the invention are described in detail with reference to the drawings. The features mentioned in the claims and in the description can each be essential to the invention individually or in any combination. The drawings show:

[0086] Fig. 1 is a schematic representation for visualizing a method according to exemplary embodiments of the invention.

[0087] Fig. 2 shows another schematic representation of a vehicle with a radar device according to exemplary embodiments of the invention. - P2024088DEWÖ -

[0088] 13

[0089] Figure 1 schematically illustrates a method 100 according to exemplary embodiments of the invention. The method 100 serves to detect at least one interference affecting radar detection in a vehicle 5 schematically shown in Figure 2. According to a first method step 101, radar data is received that results from detection by at least one radar device 40 of the vehicle 5 in at least one detection area 8. The reception can, for example, include electronic reception of the digital radar data by an analog-to-digital converter of the radar device 40 (not explicitly shown).

[0090] According to a second process step 102, processing of at least the received radar data can be provided based on interference detection, in which at least one previously determined interference signature is evaluated in order to detect the at least one interference influence. The interference detection can be carried out, for example, during or before the processing to obtain a result that indicates the interference influence. The processing and / or interference detection is possible, for example, by a data processing device 10 such as a computer 55 and preferably a microcontroller 55 with a computer program 50 or a system of such. The device 10 can, as shown, be provided at least partially in a central control unit 2 of the vehicle 5, or, as also shown, alternatively or additionally at least partially in the radar device 40 itself.

[0091] According to a third process step 103, radar detection can be carried out using the radar data. This enables, for example, the detection of gestures in the detection range 8.

[0092] According to a fourth process step 104, at least one vehicle function is initiated based on the radar detection performed. This can, for example, involve opening or unlocking a vehicle component 6 such as a vehicle door or hatch.

[0093] The execution of radar detection 103 and / or the initiation 104 of at least one vehicle function can be based on a result of processing 102, thus taking interference detection into account. This makes it possible to avoid incorrect operation and, if necessary, to compensate for interference.

[0094] It is also conceivable that the interference detection system will recognize noise signatures typical of certain scenarios, such as rain, snow, or haze. Additionally, signatures of incorrect operating gestures can also be recognized as interference signatures to prevent accidental operation of vehicle component 6. - P2024088DEWG -

[0095] 14

[0096] For example, the system can detect interference from car washes, pressure washers, and similar processes. It may also be possible to detect, via an interference signature, whether a person is sitting on the trunk sill ("swinging legs"). This allows for the differentiation between genuine user actions and incorrect operation. Typical interference signatures for specific scenarios can be recorded beforehand during a learning phase.

[0097] To further ensure that there is no malfunction and, in particular, no incorrect operating gesture, an ID transmitter can also be detected as a further prerequisite for initiating the vehicle function.

[0098] Furthermore, the radar device can also be used for other applications. For example, it can be used for object detection and / or as a parking aid. It is also possible for the radar detection and / or interference detection to include fusion with other sensors (sensor fusion). The other sensors can then be integrated to recognize a gesture and / or detect an interference.

[0099] Figure 2 shows the radar device 40 in further detail. A receiver 41 can be provided for receiving radar data 101, which results from the detection by radar sensors of the vehicle 5 in at least one detection range 8. Furthermore, a processing device 42 can be provided for processing at least the received radar data 102 based on interference detection. The interference detection can include an evaluation such as a comparison with at least one previously determined interference signature in order to detect the at least one source of interference. Furthermore, an output device 43 can be provided for initiating at least one vehicle function 104 based on radar detection using the radar data and on the basis of a result of the processing 102.

[0100] The preceding explanation of the embodiments describes the present invention solely by way of examples. Naturally, individual features of the embodiments can be freely combined with one another, provided this is technically feasible, without departing from the scope of the present invention. List of reference numerals

[0101] control unit

[0102] vehicle

[0103] Vehicle component

[0104] Detection area

[0105] device

[0106] radar device

[0107] Recipient

[0108] Processing device

[0109] Output device

[0110] Computer program

[0111] computer

[0112] sensor

[0113] Proceedings

Claims

Claims 1. Method (100) for detecting at least one interference affecting radar detection in a vehicle (5), comprising: Receiving (101) radar data resulting from detection by at least one radar device (40) of the vehicle (5) in at least one detection area (8), Processing (102) at least the received radar data on the basis of interference detection, in which at least one previously determined interference signature is evaluated in order to detect at least one interference influence, Performing (103) radar detection using the radar data, Initiating (104) at least one vehicle function based on the radar detection performed, wherein the performance (103) of the radar detection and / or the initiation (104) of the at least one vehicle function is based on a result of the processing (102).

2. Method (100) according to claim 1 , characterized in that the method (100) is carried out at least in a stationary state of the vehicle (5) in order to detect at least one gesture which is carried out outside the vehicle via radar detection.

3. Method (100) according to one of the preceding claims, characterized in that the initiation of the vehicle function is prevented if the result of the processing indicates the presence of the disturbance. - P2024088DEWG - 17 4. Method (100) according to one of the preceding claims, characterized in that the initiation (104) of the at least one vehicle function is carried out depending on a state parameter of the vehicle (5) which is specific for a stationary state of the vehicle (5), preferably a speed of the vehicle (5), in order to limit the execution of the method (100) to the stationary state of the vehicle (5).

5. Method (100) according to one of the preceding claims, characterized in that the at least one or more interference signatures specify an incorrect operation of the vehicle (5), wherein the incorrect operation preferably comprises one of the following: A movement during the cleaning of the vehicle, A leg movement in the area of ​​the tailgate or bumper.

6. Method (100) according to one of the preceding claims, characterized in that the at least one or more interference signatures are each implemented as a signature of one or more incorrect operating gestures, wherein the radar detection is implemented as a gesture detection.

7. Method (100) according to one of the preceding claims, characterized in that, during interference detection, the received radar data are compared with the interference signatures in order to detect the at least one interference influence and, in the event of a positive detection of the interference influence, to block the initiation of the vehicle function, wherein the interference signatures result from a prior detection of the incorrect operating gestures, in which at least one of the incorrect operating gestures is an alternating movement of a body part of a user and at least one further of the incorrect operating gestures is a circular movement of a body part of the user. 18 8. Method (100) according to one of the preceding claims, characterized in that the interference detection at least comprises: Determining a signature in the received radar data, Comparing the signature with one or more interference signatures, Identifying a disturbance based on comparison.

9. Method (100) according to one of the preceding claims, characterized in that the at least one or more interference signatures are each designed as a noise signature in order to detect a noise influence on the radar detection, preferably through cleaning of the vehicle (5) and / or rain and / or snow and / or moisture and / or contamination.

10. Method (100) according to one of the preceding claims, characterized in that the at least one or more interference signatures result from a recording of the detection by the at least one radar device (40) in an interference scenario, wherein the interference scenario is preferably a cleaning of the vehicle (5) and / or rain and / or snow and / or moisture and / or contamination and / or an incorrect operation, wherein the recording is preferably carried out at least partially automatically during a learning phase of the vehicle (5).

11. Method (100) according to one of the preceding claims, characterized in that the method is carried out at least in a moving state of the vehicle, during driving, in order to preferably detect at least one object outside the vehicle (5) via radar detection and / or to control a parking aid based on radar detection. 19 12. Method (100) according to one of the preceding claims, characterized in that the interference detection further comprises: Determining sensor data resulting from the detection of at least one further sensor (60), wherein the sensor data preferably indicate a movement of a user and / or a distance of an identification transmitter carried by the user, - Evaluating the sensor data to determine whether at least one interference factor is present, Identifying a malfunction based on the evaluation.

13. Method (100) according to one of the preceding claims, characterized in that during the processing (102) several parameters of the radar device (40) are evaluated with regard to the presence of at least one interference signature, wherein the parameters comprise at least two of the following: A speed, A movement pattern, A distance, An angle, in particular an azimuth and / or an elevation and / or an angle of arrival, A signal strength, A frequency, A polarization, A Doppler shift spectrum.

14. Method (100) according to one of the preceding claims, characterized in that aging information is determined during processing (102), wherein the detection of the disturbance influence is carried out on the basis of the aging information in order to compensate for aging effects. 20 15. Radar device (40) for radar detection in a vehicle (5), comprising a device (10) for detecting at least one interference affecting the radar detection in the vehicle (5), the device (10) comprising: a receiver (41) for receiving (101) radar data resulting from the detection of radar by a vehicle's radar sensor (5) in at least one detection area (8), a processing device (42) for processing (102) at least the received radar data on the basis of interference detection, in which at least one previously determined interference signature is evaluated to detect the at least one interference, and an output device (43) for initiating (104) at least one vehicle function based on radar detection using the radar data and on the basis of a result of the processing (102).

16. Computer program (50) comprising instructions which, when the computer program is executed by a computer (55), cause the computer to execute the method according to any one of claims 1 to 14.

17. Device (55) for data processing, which is configured to carry out the method (100) according to any one of claims 1 to 14.

Images