Abstract: A vehicle radar system (3) and method including a first and second radar sensor arrangement (4a, 4b). Each radar sensor arrangement (4a, 4b) includes at least two transmitter antenna devices (10a1, 10a2) and at least two receiver antenna devices (13a1, 13a2, 13a3, 13a4), where each receiver antenna device (13a1, 13a2, 13a3, 13a4) has a corresponding boresight extension (46a, 46b) that is perpendicular to an antenna plane (57). Each receiver antenna device (13a1, 13a2, 13a3, 13a4) has a corresponding antenna radiation pattern (47a, 47b) that has a lower gain (48a, 48b) in its boresight extension (46a, 46b) than at a certain corresponding first maximum gain azimuth angle (?1a, ?1b) where there is a first maximum gain (49a, 49b). Each radar sensor arrangement (4a, 4b) is mounted such that each first maximum gain (49a, 49b) is directed along a corresponding first maximum gain extension (51a, 51b), such that an overlap part (56) of the antenna radiation patterns (47a, 47b) is formed.

Abstract: A method for controlling the function of a vehicle radar transceiver (3), where the method includes transmitting (S100) a radar signal (5) and collecting and storing (S300) target data comprising a received detected signal level obtained from the reflected radar signals (6) that have been reflected by at least one target object (7) during a measurement angular interval (21). The method further includes determining (S400) that the radar transceiver (3) is functioning properly when at least one of the following conditions is met: the detected signal level exceeds a minimum signal level (12) during an angular interval (?i) included in a measurement angular interval (21); and a detected signal level change for a certain angular change falls below a certain limit during an angular interval (?i) included in the measurement angular interval (21).

Abstract: A side-shield (310) for a radar transceiver (130), the side-shield (310) including a non-uniform delay structure arranged over an extension plane of the side-shield, the non-uniform delay structure being configured to delay a radar signal (220, 320) propagating through the side-shield (310) by a variable amount in dependence of a wavelength of the radar signal and in dependence of a location on the extension plane, thereby steering and/or diffusing the radar signal (320) after propagation through the side-shield (310).

Abstract: A vehicle radar system (3) and method including a first and second radar sensor arrangement (4a, 4b). Each radar sensor arrangement (4a, 4b) includes at least two transmitter antenna devices (10a1, 10a2) and at least two receiver antenna devices (13a1, 13a2, 13a3, 13a4), where each receiver antenna device (13a1, 13a2, 13a3, 13a4) has a corresponding boresight extension (46a, 46b) that is perpendicular to an antenna plane (57). Each receiver antenna device (13a1, 13a2, 13a3, 13a4) has a corresponding antenna radiation pattern (47a, 47b) that has a lower gain (48a, 48b) in its boresight extension (46a, 46b) than at a certain corresponding first maximum gain azimuth angle (?1a, ?1b) where there is a first maximum gain (49a, 49b). Each radar sensor arrangement (4a, 4b) is mounted such that each first maximum gain (49a, 49b) is directed along a corresponding first maximum gain extension (51a, 51b), such that an overlap part (56) of the antenna radiation patterns (47a, 47b) is formed.

Abstract: Methods and systems for correcting leakage and/or distortion in radar systems include defining an integration time period, dividing the integration time period into a first sub-period and a second sub-period, at least partially transmitting a transmission radar signal during the first sub-period of the integration time period, not transmitting at all during the second sub-period of the integration time period, integrating the detected signal during both the first sub-period and the second sub-period, and subtracting a last sampled integrated value of the second sub-period from a last sampled integrated value of the first sub-period to generate a corrected integrated value for the integration time period.

Abstract: Methods and systems for correcting leakage and/or distortion in radar systems include defining an integration time period, dividing the integration time period into a first sub-period and a second sub-period, at least partially transmitting a transmission radar signal during the first sub-period of the integration time period, not transmitting at all during the second sub-period of the integration time period, integrating the detected signal during both the first sub-period and the second sub-period, and subtracting a last sampled integrated value of the second sub-period from a last sampled integrated value of the first sub-period to generate a corrected integrated value for the integration time period.

Abstract: A radar system and method include a first transmitted radar signal having a first frequency and a second transmitted radar signal having a second frequency different from the first frequency. A receiver receives reflected radar signals generated by reflection of the transmitted radar signals and generates receive signals indicative of the reflected radar signals, a first receive signal being indicative of a first reflected radar signal generated by reflection of the first transmitted radar signal, and a second receive signal being indicative of a second reflected radar signal generated by reflection of the second transmitted radar signal. A processor receives the first and second receive signals and computes a difference between the first and second receive signals to generate a difference signal, the processor processing the difference signal to provide radar information.

Abstract: The present invention relates to a vehicle radar system (2) arranged to detect objects outside a vehicle (1). The radar system (2) a radar detector (3) and a processing unit (4). The processing unit (4) is arranged to obtain values for detected target angle (?err) and detected target Doppler velocity (vd) relative the radar detector (3) for each detected object (10a?, 10b?, 10c?, 10d?, 10e?) during a certain time interval. If there is a zero crossing (14) for a derivative (13) of a function (12) describing the progression of detected target Doppler velocity (vd) as a function of detected target angle (?err), the processing unit (4) is arranged to detect the zero crossing (14). This zero crossing (14) is indicative of a radar system misalignment (?m). The present invention also relates to a corresponding method.

Abstract: The present invention relates to a vehicle radar system (2) arranged to detect objects outside a vehicle (1). The radar system (2) a radar detector (3) and a processing unit (4). The processing unit (4) is arranged to obtain values for detected target angle (?err) and detected target Doppler velocity (vd) relative the radar detector (3) for each detected object (10a?, 10b?, 10c?, 10d?, 10e?) during a certain time interval. If there is a zero crossing (14) for a derivative (13) of a function (12) describing the progression of detected target Doppler velocity (vd) as a function of detected target angle (?err), the processing unit (4) is arranged to detect the zero crossing (14). This zero crossing (14) is indicative of a radar system misalignment (?m). The present invention also relates to a corresponding method.

Abstract: Methods and systems for correcting leakage and/or distortion in radar systems include defining an integration time period, dividing the integration time period into a first sub-period and a second sub-period, at least partially transmitting a transmission radar signal during the first sub-period of the integration time period, not transmitting at all during the second sub-period of the integration time period, integrating the detected signal during both the first sub-period and the second sub-period, and subtracting a last sampled integrated value of the second sub-period from a last sampled integrated value of the first sub-period to generate a corrected integrated value for the integration time period.

Abstract: A radar apparatus and method for determining the range to and velocity of at least one object comprising, transmitting a plurality of RF signals, each comprising a particular frequency and being transmitted during a particular unique finite period, the plurality of signals collectively comprising at least one first subset of signals having the same frequency and at least one second subset of signals having different frequencies, receiving the plurality of signals after reflection from an object, determining a phase difference between each of the signals and the corresponding reflected signal, each piece of phase difference information herein termed a sample, organizing the samples in two-dimensions wherein, in a first dimension, all samples have the same frequency and, in a second dimension, all consecutive samples are separated from each other by a fixed time interval; processing the samples in the first dimension to determine a phase rotation frequency corresponding to the samples in the first dimension, th

Abstract: A radar apparatus and method for determining the range to and velocity of at least one object comprising, transmitting a plurality of RF signals, each comprising a particular frequency and being transmitted during a particular unique finite period, the plurality of signals collectively comprising at least one first subset of signals having the same frequency and at least one second subset of signals having different frequencies, receiving the plurality of signals after reflection from an object, determining a phase difference between each of the signals and the corresponding reflected signal, each piece of phase difference information herein termed a sample, organizing the samples in two-dimensions wherein, in a first dimension, all samples have the same frequency and, in a second dimension, all consecutive samples are separated from each other by a fixed time interval; processing the samples in the first dimension to determine a phase rotation frequency corresponding to the samples in the first dimension, th

Abstract: A system and method for detecting the presence and precise location of a device bearing a radio frequency identification (RFID) tag comprising a plurality of resonators, a first circuit for driving the plurality of resonators with a low frequency drive signal for exciting nearby RFID tags via magnetic field excitation, a multiplexer having a plurality of input terminals, each input terminal coupled to one of the plurality of resonators, and an output terminal, and a signal processing circuit coupled to the output terminal of the multiplexer for reading the signals of the resonators and determining the identification of any RFID tags excited by the resonators.

Abstract: A sensor front end is disclosed that is able to discriminate objects based on their range from the sensor and to derive bearing information therefrom. The sensor system includes a signal source for transmitting at least a first and a second sensor signal toward the object and receiving a first and a second reflected signal pulse therefrom, and for generating a first and second information signal based on the first and the second reflected signals, respectively; and an information processor programmed to receive the first and second information signal from the signal source and to determine bearing information for the object based on a phase difference between the first and second information signal. The information processor is preferably capable of generating sample points from the first and second information signal and calculating the bearing information using these sample points.

Abstract: A sensor front end is disclosed that is able to discriminate objects based on their range from the sensor and to derive bearing information therefrom. The sensor system includes a signal source for transmitting at least a first and a second sensor signal toward the object and receiving a first and a second reflected signal pulse therefrom, and for generating a first and second information signal based on the first and the second reflected signals, respectively; and an information processor programmed to receive the first and second information signal from the signal source and to determine bearing information for the object based on a phase difference between the first and second information signal. The information processor is preferably capable of generating sample points from the first and second information signal and calculating the bearing information using these sample points.