Abstract: A radar transceiver arrangement for generating modulated multi-tone chirp signals. The radar transceiver arrangement including a transmitting device with at least two digital chirp generators, which each generate a complex, digital chirp signal with configurable parameters, and at least two transmission paths, for which each of the chirp generators generates a signal by combining the chirp signals, which is converted to analog via a digital-to-analog converter for the transmission of radar signals by a transmitting antenna.

Abstract: A method for providing personal tracking data for controlling at least one function of a technical system. The method includes reading in, executing, and generating. During the reading in, sensor data from two spaced-apart radar sensors with partially overlapping fields of view are read in, the sensor data representing a point cloud made up of point targets that are detected with the aid of the radar sensors. During the execution, an estimation algorithm is executed, using the sensor data, in order to generate at least one corrected position profile track, the estimation algorithm applying a density-based cluster analysis algorithm. During the generating, the tracking data are generated using the at least one corrected position profile track.

Abstract: A method for self-calibration of a radar system which includes at least two antenna groups to which a transmission channel and a receiving channel are assigned. Targets are measured by the radar system. The range and Doppler information is processed for each antenna group, and the targets are detected to obtain reflection lists with complex amplitudes for each target. A compensation of the amplitude differences for the respective channels is performed. A two-dimensional linear regression is used to estimate a regression plane, and the difference between the measured phase value and the regression plane is calculated for each channel to obtain an intragroup phase correction value. A distance between two regression planes of different antenna groups is calculated with modulo 21 to obtain an intergroup phase correction value. The control vector of each channel is compensated with the intragroup phase correction value and the intergroup phase correction value.

Abstract: A multiple-input multiple-output (MIMO) radar network and a method for synchronizing such a network. The method includes synchronizing at least two radar sensors with broadband digital signal generation by emitting at least two multiplex frequency modulated signals with a defined frequency offset by a radar sensor and receiving the signals with another radar sensor. By means of the defined frequency offset, the frequency offset between the radar sensors can be determined or estimated and the clocks can be synchronized with each other.

Abstract: An OFDM radar sensor system having a plurality of transmitting and receiving units. One of the transmitting and receiving units is an OFDM radar sensor, and another of the transmitting and receiving units is a repeater which is configured to modulate a signal generated and transmitted by the OFDM radar sensor and received by the repeater into a signal orthogonal to the signal received by the repeater and to emit the modulated signal. The OFDM radar sensor is configured to separate a portion of a signal received by the OFDM radar sensor, which portion corresponds to the modulated signal, from a monostatic portion of the signal received by the OFDM radar sensor.

Abstract: An OFDM radar sensor including multiple transmission channels and at least one reception channel, and a method for operating such an OFDM radar sensor. At least for first transmission channels, the signal form of the signal to be transmitted, which includes a sequence of OFDM symbols in question, is progressively computed in portions for each transmission channel, and multiple buffer memories are used in alternation for storing a computed portion of the signal form and for reading out a previously computed and stored preceding portion of the signal form, which is converted from digital to analog and transmitted. A particular portion of the signal form is computed and stored in one of the buffer memories while a preceding portion of the signal form is being read out from another of the buffer memories and converted from digital to analog, and transmitted on the transmission channel in question.

Abstract: A method for generating synthetic measurement data indistinguishable from actual measurement data captured by a first physical measurement modality. The first physical measurement modality is based on emitting an interrogating wave towards an object and recording a reflected wave coming from the object in a manner that allows for a determination of the time-of-flight between the emission of the interrogating beam and the arrival of the reflected wave. The method includes: obtaining a first compressed representation of the synthetic measurement data in a first latent space, wherein this first latent space is associated with a first decoder that is trained to map each element of the first latent space to a record of synthetic measurement data that is indistinguishable from records of actual measurement data of the first physical measurement modality, and applying the first decoder to the first compressed representation, so as to obtain the sought synthetic measurement data.

Abstract: A radar system for motor vehicles. The radar system has multiple transceiver units, which are situated on separate installation supports for the installation in different locations in the motor vehicle and are connected to one another by a synchronization network. Each of the transceiver units has a scanning module for scanning radar signals received on a plurality of channels in the form of a time signals. Each installation support has a raw-data interface for the transmission of the time signal of the transceiver unit to a central evaluation instance. The central evaluation instance is configured to jointly evaluate the time signals from the plurality of transceiver units.

Abstract: A method for providing personal tracking data for controlling at least one function of a technical system. The method includes reading in, executing, and generating. During the reading in, sensor data from two spaced-apart radar sensors with partially overlapping fields of view are read in, the sensor data representing a point cloud made up of point targets that are detected with the aid of the radar sensors. During the execution, an estimation algorithm is executed, using the sensor data, in order to generate at least one corrected position profile track, the estimation algorithm applying a density-based cluster analysis algorithm. During the generating, the tracking data are generated using the at least one corrected position profile track.

Abstract: A radar system for motor vehicles, with a plurality of transmit/receive units arranged on separate installation supports for installation at various locations in the motor vehicle, an evaluation system for evaluating the radar signals received on a plurality of channels in a plurality of processing steps, a first processing step delivering a digital time signal for each channel, which digital time signal represents the received radar signal, and a final processing step delivering as the result location data for individual radar objects and at least the final processing step being implemented for the plurality of transmit/receive units in a central evaluation unit with which the transmit/receive units in each case communicate via a raw data interface. The each of raw data interfaces has a serializer, which is configured to transfer raw data from the plurality of channels of the transmit/receive unit in question serially to the central evaluation unit.

Abstract: An OFDM radar sensor including multiple transmission channels and at least one reception channel, and a method for operating such an OFDM radar sensor. At least for first transmission channels, the signal form of the signal to be transmitted, which includes a sequence of OFDM symbols in question, is progressively computed in portions for each transmission channel, and multiple buffer memories are used in alternation for storing a computed portion of the signal form and for reading out a previously computed and stored preceding portion of the signal form, which is converted from digital to analog and transmitted. A particular portion of the signal form is computed and stored in one of the buffer memories while a preceding portion of the signal form is being read out from another of the buffer memories and converted from digital to analog, and transmitted on the transmission channel in question.

Abstract: An OFDM radar sensor system having a plurality of transmitting and receiving units. One of the transmitting and receiving units is an OFDM radar sensor, and another of the transmitting and receiving units is a repeater which is configured to modulate a signal generated and transmitted by the OFDM radar sensor and received by the repeater into a signal orthogonal to the signal received by the repeater and to emit the modulated signal. The OFDM radar sensor is configured to separate a portion of a signal received by the OFDM radar sensor, which portion corresponds to the modulated signal, from a monostatic portion of the signal received by the OFDM radar sensor.

Abstract: A method for operating an OFDM radar system. The method includes: generating an analog transmit signal in the baseband; mixing the analog transmit signal with a first mixed signal at a first frequency, the first frequency of the first mixed signal lying centrally between two sidebands of a transmission band; receiving a received signal; mixing the received signal with a second mixed signal at a second frequency into the baseband, the second frequency of the second mixed signal lying in a defined manner adjacent to a total bandwidth of the received signal.

Abstract: A method for generating synthetic measurement data indistinguishable from actual measurement data captured by a first physical measurement modality. The first physical measurement modality is based on emitting an interrogating wave towards an object and recording a reflected wave coming from the object in a manner that allows for a determination of the time-of-flight between the emission of the interrogating beam and the arrival of the reflected wave. The method includes: obtaining a first compressed representation of the synthetic measurement data in a first latent space, wherein this first latent space is associated with a first decoder that is trained to map each element of the first latent space to a record of synthetic measurement data that is indistinguishable from records of actual measurement data of the first physical measurement modality, and applying the first decoder to the first compressed representation, so as to obtain the sought synthetic measurement data.

Abstract: A radar system including a reference channel formed symmetrically in relation to a main channel, with a first oscillator, generating a first input signal, which is feedable to an antenna in the main channel, a reflected portion of the first input signal being feedable to a first mixer, the first input signal in the reference channel being feedable to a second mixer via a second directional coupler, with a second oscillator, generating a second input signal having a frequency differing from the first input signal in a defined way, which is feedable to the first and second mixers, the signal coming from the mixer of the main channel and the signal coming from the mixer of the reference channel being compared, and dimensioning a terminating impedance of the reference channel as a function of the comparison so that the output signals of the main and reference channels have identical properties.

Abstract: A device and a method for transmitting a high-frequency signal. The device is designed to include a carrier, through which a passage is formed; a transmitting element on a first surface of the carrier, to which the high-frequency signal may be applied; and a receiving element on a second surface of the carrier, which is galvanically isolated from the transmitting element, the high-frequency signal being transmittable as an electromagnetic wave through the passage to the receiving element with the aid of the transmitting element.

Abstract: An antenna device having a settable directional characteristic and a method for operating an antenna device. The antenna device according to the present invention includes a feed signal provision unit, with the aid of which a first, second, third and fourth electrical feed signal may be provided, the electrical feed signals being coherent with one another and having phases relative to one another which are adapted to set the settable directional characteristic of the antenna device, the phases being adaptable with the aid of a feed signal adaptation unit; a plurality of antenna columns, each antenna column including a respective plurality of electrically connected antenna elements; the electrical feed signals being conductable for inducing the antenna elements of the antenna columns to emit electromagnetic waves having the set directional characteristic.

Abstract: An antenna device for receiving electromagnetic waves and a method for operating an antenna device. The antenna device is fashioned having: a bearer; at least one receive antenna device situated at an external side of the bearer, for receiving electromagnetic waves having a first polarization; at least one repolarization device situated at the external side of the bearer and fashioned to re-emit electromagnetic waves impinging on the repolarization device having the first polarization as electromagnetic waves having a second polarization; and a filter device situated at the external side of the bearer and fashioned to absorb electromagnetic waves having the second polarization.

Abstract: An antenna array, in particular a traveling-wave antenna array, has an adjustable radiation pattern, having an antenna element that has a first feed terminal at one end of the antenna element and a second feed terminal at another end of the antenna element; a signal generation unit that is configured for generating a feed signal and for providing a feed signal at the first feed terminal of the antenna element and at the second feed terminal of the antenna elements; at least one signal conditioning unit that is electrically configured between the signal generation unit and one of the feed terminals and that is configured for matching the amplitude and/or the phase of the corresponding feed signal to a specified radiation pattern. Also described is a corresponding method.

Abstract: A and a method for transmitting a high-frequency signal. The device is designed to include a carrier, through which a passage is formed; a transmitting element on a first surface of the carrier, to which the high-frequency signal may be applied; and a receiving element on a second surface of the carrier, which is galvanically isolated from the transmitting element, the high-frequency signal being transmittable as an electromagnetic wave through the passage to the receiving element with the aid of the transmitting element.