Abstract: A method for recognizing the validity of a vehicle parameter. The method comprises a step of reading at least one first parameter and at least one second parameter, wherein the first parameter represents a first physical variable of the vehicle or a variable derived from the first physical variable, and the second parameter represents a second physical variable of the vehicle or a variable derived from the second physical variable. A distinguishing criterion for recognizing the validity of the vehicle parameter of the vehicle using a combination of the first and second parameter is also read. The method also comprises a step of assigning the vehicle parameter as a valid vehicle parameter if a combination of the first and the second parameter meets the distinguishing criterion.

Abstract: A method for estimating the height of a reflector of a vehicle, the method including a reading step, in which at least one reflection signal from the reflector of the vehicle is read at one time and the at least one reflection signal representing at least one information item in respect of a relative speed of the vehicle. Further, the method includes a specifying step, in which an estimated value for the speed of the vehicle is specified. Finally, the method includes an ascertaining step, in which an estimated value for the height of the reflector is ascertained using the relative speed of the vehicle and the estimated value for the speed of the vehicle.

Abstract: The invention relates to a method (500) for ascertaining an installation angle (?Install) between a roadway (170) on which a vehicle (100) travels and a detection direction (122) of a measurement or radar sensor (105). The method (500) has a step (510) of reading a plurality of reflection signals (125), each of which represents a measurement or radar beam (120) which has been emitted by a transmission unit (115) of the measurement or radar sensor (105) and each of which has been reflected on a different reflective section (130) of the vehicle (100). The reflection signals (125) have movement information on a movement direction of the vehicle (100) reflective section (130) on which the measurement or radar beam (120) has been reflected, and/or the reflection signals (125) have position information that represents the position (420) of the vehicle (100) reflective section (130) on which the measurement or radar beam (120) has been reflected.

Abstract: A method for estimating the height of a reflector of a vehicle, the method including a reading step, in which at least one reflection signal from the reflector of the vehicle is read at one time and the at least one reflection signal representing at least one information item in respect of a relative speed of the vehicle. Further, the method includes a specifying step, in which an estimated value for the speed of the vehicle is specified. Finally, the method includes an ascertaining step, in which an estimated value for the height of the reflector is ascertained using the relative speed of the vehicle and the estimated value for the speed of the vehicle.

Abstract: A method for contact-free axle counting of a vehicle on a road, including a step of reading in first image data and reading in second image data, wherein the first image data and/or the second image data represent image data provided to an interface by an image data recording sensor arranged on a side of the road. The first image data and/or the second image data comprise an image of the vehicle. The first image data and/or the second image data is processed in order to obtain processed first image data and/or processed second image data. By using the first image data and/or the second image data in a substep of detecting, at least one object is detected in the first image data and/or the second image data, and wherein object information is provided representing the object and assigned to the first image data and/or the second image data.

Abstract: An apparatus for detecting a speed and a distance of at least one object with respect to a receiver of a reception signal. The apparatus has at least one interface for reading in at least one in-phase component and one quadrature component of a plurality of temporally successive reception signals each representing a signal which is reflected to the receiver at the object and was emitted at a predefined transmission frequency. The apparatus also has a unit for forming a first detection value and a unit for determining a second detection value and a unit for determining a speed, corresponding to a reference speed, of the object with respect to the receiver and the reference distance as the distance of the object with respect to the receiver using the first and second detection values.

Abstract: A method for classifying vehicles in which an angle-resolving radar device yields measurement signals which have frequencies corresponding to a Doppler shift and which originate from measured vehicles and from which radial distances, object angles and radial velocities can be derived. The frequencies of the acquired measurement signals are stored as functions over the measurement time period, and a spectrogram is formed for every vehicle therefrom. Subsequently, the spectrograms are checked for assessment regions with maximum bandwidth of the frequency. These assessment regions are compared with assessment regions of stored spectrograms for different vehicle classes and associated with the most similar such that the measured vehicles are classified.

Abstract: A method for classifying vehicles in which an angle-resolving radar device yields measurement signals which have frequencies corresponding to a Doppler shift and which originate from measured vehicles and from which radial distances, object angles and radial velocities can be derived. The frequencies of the acquired measurement signals are stored as functions over the measurement time period, and a spectrogram is formed for every vehicle therefrom. Subsequently, the spectrograms are checked for assessment regions with maximum bandwidth of the frequency. These assessment regions are compared with assessment regions of stored spectrograms for different vehicle classes and associated with the most similar such that the measured vehicles are classified.