Abstract: A radar system including a circuit board and a molded part having an antenna, wherein the connection between an emitting or receiving element of a high-frequency component and the antenna on an upper side of the molded part is realized by inner waveguides, the emitting or receiving element configured to emit in the direction or receive from the direction of the circuit board, the circuit being permeable by radar waves in the region of the emitting or receiving element, the molded part being arranged on a side of the circuit board opposite the high-frequency component and partially and conductively connected to said circuit board, at least one hollow waveguide is formed by a depression on the side of the molded part facing the circuit board and a metallized surface of the circuit board, and said at least one waveguide is fed from a permeable location of the circuit board.

Abstract: A coherent lidar system for capturing surroundings emits a power-modulated signal which is realized by irregular switching on and off. The signals reflected back are received and digitized in a receive sequence, wherein the variable dimensions time shift and frequency shift of signals reflected by objects are determined from the receive sequence by digital signal processing. A two-dimensional correlation filtering is used for the dimensions time shift and frequency shift, or a discrete Fourier transform is calculated to reduce the required computing outlay, wherein the respective frequencies are determined from values of said Fourier transform, wherein the receive sequence is turned back in each case in frequency regarding the respective frequencies. The object distance is determined from values of this respective correlation and the radial relative speed of the respective object is determined from the respective frequency.

Abstract: A coherently working lidar system for capturing the surroundings, which emits a phase-modulated signal, wherein the phase of said signal is produced by switching between discrete values from a sequence of phase values, and the times of the phase switching form a subset of an equidistant time raster. The system receives the signals reflected back from objects and converts the signals into a low-frequency signal by mixing and digitizing them in a receive sequence. The system determines the time shift and frequency shift of signals reflected by objects from said receive sequence. The phase modulation sequence includes two periodically interleaved sequences, wherein the first sequence has constant or periodic phase values and primarily serves to determine the frequency shift, whilst the second sequence substantially changes irregularly between phase values and serves to determine the time shift.

Abstract: A coherent lidar system for capturing the surroundings is configured to emit a phase-modulated signal with pseudo-random change over discrete phase values. The system receives the signals reflected back from objects and converts the signals into a low-frequency signal by mixing and digitizing. The system includes a digital signal processing for correlation filtering of the low-frequency received signal. At least a part of the two-dimensional correlation filter is realized by a hardwired digital circuit embodied as a pipeline, wherein multiple or all of the output values are determined per clock frequency of the digital circuit in one of the two dimensions, and over a sequence of clock frequencies in the other dimension.

Abstract: A radar system for detecting the surroundings of a motor vehicle, the radar system includes a plastic-based antenna having a front side facing a cover. The plastic-based antenna has a plurality of individual antennas for transmitting and/or receiving radar signals to detect objects and/or determining angles thereof. The front side between the individual antennas is configured to be at least partially not reflective on a surface thereof such that interference waves on the surface of the plastic-based antenna and/or reflections between the plastic-based antenna and the cover are suppressed or the negative effects thereof on the determination of angles are at least reduced.

Abstract: A method for detecting the environment of a motor vehicle utilizing a radar sensor includes bringing about frequency modulation with a controllable oscillator and generating a sequence of transmission-frequency-modulated transmit signals, which each have the same nominal frequency profile. Received signals reflected from objects are evaluated such that an actual profile of the transmission frequency within the transmit signals or a deviation of the actual profile from the nominal frequency profile is established. Depending on an actual profile and/or a deviation determined, correction in the driving of the oscillator and/or correction in the evaluation of the received signals and/or adaptation of the driver assistance function and/or the autonomous driving maneuver function up to and including disabling thereof are performed.

Abstract: A method for a radar system is presented, for detecting the surroundings using transmission means for emitting transmission signals which contain a sequence of at least approximately identical individual signals, the sequence of individual transmission signals being repeated cyclically, said method being characterized in that over the sequence of the individual signals the frequency position thereof—optionally apart from a varying and at least approximately mean value-free component—is changed at least approximately linearly and, in the process, the slope of the linear frequency position change over the individual transmission signals is at least sometimes varied from sequence to sequence, in particular in order to increase the radial distance and/or relative speed measurement accuracy and/or in order to be more robust in respect of interference with other radar systems.

Abstract: A method for controlling a radar system is presented, for detecting the surroundings using transmission means for emitting transmission signals which contain a sequence of at least approximately identical individual signals, the sequence of individual transmission signals being repeated cyclically, said method being characterized in that over the sequence of the individual signals the frequency position thereof—optionally apart from a varying and at least approximately mean value-free component—is changed at least approximately linearly and, in the process, the slope of the linear frequency position change over the individual transmission signals is at least sometimes varied from sequence to sequence, in particular in order to increase the radial distance and/or relative speed measurement accuracy and/or in order to be more robust in respect of interference with other radar systems.

Abstract: A radar system including a circuit board and a molded part having an antenna, wherein the connection between an emitting or receiving element of a high-frequency component and the antenna on an upper side of the molded part is realized by inner waveguides, the emitting or receiving element configured to emit in the direction or receive from the direction of the circuit board, the circuit being permeable by radar waves in the region of the emitting or receiving element, the molded part being arranged on a side of the circuit board opposite the high-frequency component and partially and conductively connected to said circuit board, at least one hollow waveguide is formed by a depression on the side of the molded part facing the circuit board and a metallized surface of the circuit board, and said at least one waveguide is fed from a permeable location of the circuit board.

Abstract: A method for detecting the environment of a motor vehicle utilizing a radar system includes bringing about frequency modulation utilizing an oscillator and generating a sequence of transmission-frequency-modulated transmit signals, which each having the same nominal frequency profile, apart from a variation in frequency position. Received signals for object detection are evaluated. A one time-discrete signal per transmit signal is used which includes information about the frequency profile of the transmit signal and which is generated by sampling of an analog signal or by reading out of a free-running counter at predetermined points in time. These time-discrete signals are unnormalized by way of the transmit signals with regard to the position of their phase and/or their initial value.

Abstract: A radar system for detecting the environment of a motor vehicle includes an antenna assembly comprising plastic and including one or more individual antennas for transmitting and/or receiving radar signals. A circuit board includes at least one area that is permeable by radar waves. At least one high-frequency component is coupled to one side of the circuit board and includes at least one radiating element for direct emission or receipt of radar waves in the direction of the circuit board in the least one area that is permeable by radar waves. The antenna assembly is disposed on the other side of the circuit board opposite the at least one high-frequency component. The antenna assembly includes a coupling/decoupling point disposed in the at least one area of the circuit board permeable by radar waves.

Abstract: A method for detecting the environment of a motor vehicle utilizing a radar sensor includes bringing about frequency modulation with a controllable oscillator and generating a sequence of transmission-frequency-modulated transmit signals, which each have the same nominal frequency profile. Received signals reflected from objects are evaluated such that an actual profile of the transmission frequency within the transmit signals or a deviation of the actual profile from the nominal frequency profile is established. Depending on an actual profile and/or a deviation determined, correction in the driving of the oscillator and/or correction in the evaluation of the received signals and/or adaptation of the driver assistance function and/or the autonomous driving maneuver function up to and including disabling thereof are performed.

Abstract: A method for detecting the environment of a motor vehicle utilizing a radar system includes bringing about frequency modulation utilizing an oscillator and generating a sequence of transmission-frequency-modulated transmit signals, which each having the same nominal frequency profile, apart from a variation in frequency position. Received signals for object detection are evaluated. A one time-discrete signal per transmit signal is used which includes information about the frequency profile of the transmit signal and which is generated by sampling of an analog signal or by reading out of a free-running counter at predetermined points in time. These time-discrete signals are unnormalized by way of the transmit signals with regard to the position of their phase and/or their initial value.

Abstract: A radar system for detecting the surroundings of a motor vehicle, the radar system includes a plastic-based antenna having a front side facing a cover. The plastic-based antenna has a plurality of individual antennas for transmitting and/or receiving radar signals to detect objects and/or determining angles thereof. The front side between the individual antennas is configured to be at least partially not reflective on a surface thereof such that interference waves on the surface of the plastic-based antenna and/or reflections between the plastic-based antenna and the cover are suppressed or the negative effects thereof on the determination of angles are at least reduced.

Abstract: A radar system for detecting the environment of a motor vehicle includes an antenna assembly comprising plastic and including one or more individual antennas for transmitting and/or receiving radar signals. A circuit board includes at least one area that is permeable by radar waves. At least one high-frequency component is coupled to one side of the circuit board and includes at least one radiating element for direct emission or receipt of radar waves in the direction of the circuit board in the least one area that is permeable by radar waves. The antenna assembly is disposed on the other side of the circuit board opposite the at least one high-frequency component. The antenna assembly includes a coupling/decoupling point disposed in the at least one area of the circuit board permeable by radar waves.

Abstract: A device for determining the detection range of a sensor unit for a motor vehicle includes: a memory unit configured to provide a map having map data regarding a landmark and a target detection range, a reflectivity property and/or a radiant intensity respectively associated with the landmark; a sensor unit configured to detect the landmark in surroundings with an actual detection range and/or to measure a received signal intensity for the landmark; and a computing unit configured to determine a detection range of the sensor unit based on the target detection range and the actual detection range and/or based on a comparison of the received signal intensity with a calculated signal intensity derived from the reflectivity property and/or the radiant intensity associated with the landmark.

Abstract: An environmental detection method for a vehicle uses transmitting antennas to emit transmission signals that each consist of a sequence of identical or similar single signals, uses receiving antennas to receive the transmission signals reflected from objects, and processes the received signals. The transmission signals are emitted from only one transmitting antenna at a time, and the active transmitting antenna alternates cyclically from single signal to signal. All receiving antennas are always used in parallel. The received single signals are accumulated in proper phase for the different combinations of transmitting and receiving antennas to at least one relative speed hypothesis of objects. Digital beam formation is performed based on the accumulated signal values, each belonging to the same relative speed hypothesis, from different antenna combinations. Phase differences between received signals from different transmitting antennas are thereby taken into consideration.

Abstract: The invention relates to a radar system for use in driver assistance systems in motor vehicles. According to the invention, the radar system has optimized storage of temporary data when using periodic linear frequency modulation and a multidimensional discrete Fourier transform.

Abstract: The present invention relates to a device for determining the range of a sensor for a motor vehicle, wherein the device (1) comprises: a memory unit (10), which is designed to provide, as an attribute, a map having at least one landmark and a target detection range associated with the landmark and/or a reflectivity property associated with the landmark and/or a radiant intensity associated with the landmark; a sensor unit (20), which is designed to detect the at least one landmark with an actual detection range and/or to measure a received signal intensity for the at least one landmark; and a computing unit (30), which is designed to determine a detection range of the sensor unit (20) based on the target detection range and the actual detection range and/or based on a comparison of the signal intensity measured for the respective landmark and the calculated signal intensity, which can be derived from the reflectivity property recorded in the map and/or the radiant intensity of the respective landmark.

Abstract: A method for the environmental detection of a motor vehicle, comprising the following steps: emitting transmission signals using N2?2 transmitting antennas, wherein in each case, the considered transmission signals consist of a sequence of NS×NP identical or similar single signals, receiving transmission signals reflected off objects using NE>=2 receiving antennas, and processing the received signals, characterized in that in each case, transmitting is done on only one of the NS transmitting antennas, wherein from single signal to single signal, the transmitting antenna used alternates cyclically, and within each of the NP periods of the cyclical transmitting antenna alternation the temporal progression is at least approximately the same, in order to receive single signals reflected off objects, all considered NE receiving antennas are always used in parallel, each of the NP received single signals are accumulated in proper phase for the NS×NE different combinations of transmitting and receiving antenna