Abstract: A radar system (210) for a vehicle (200), comprising a plurality of radar transceivers (202, 203, 204, 205) and a control unit (208). Each radar transceiver (202, 203, 204, 205) is associated with a main pointing direction (P1, P2, P3, P4) and a certain frequency sub-band (A, B, C, D), where the sub-bands (A, B, C, D) together form a certain dedicated frequency band. The control unit (208) is adapted to define heading intervals which divide a full turn interval 0°-360° into sections, assign a corresponding sub-band (A, B, C, D) to each heading interval, determine a present vehicle heading (F), and to assign a corresponding sub-band (A, B, C, D) to each one of the radar transceivers (202, 203, 204, 205) in dependence of the heading interval that includes the present vehicle heading (F).

Abstract: A radar system (201) for a vehicle (200), comprising a control unit (203) and a radar transceiver arrangement (202) with at least one ego radar transceiver (204), where, for the at least one ego radar transceiver (204), the control unit (203) is adapted to: determine a present direction (D, DA) of the ego radar transceiver (204), determine a reserved frequency band (B0) corresponding to the present direction (D, DA), and to determine a first extended frequency band (B1) comprising and extending beyond the reserved frequency band (B0), wherein the control unit is further adapted to: detect presence of an interfering radar transceiver in the first extended frequency band, and operating the ego radar transceiver (204) in the first extended frequency band (B1) in case an interfering radar transceiver is not detected in the first extended frequency band and operating the ego radar transceiver (204) in the reserved frequency band (B0) otherwise.

Abstract: A radar transceiver (400) including a transmit branch (450, 455, TX) arranged to transmit a radar signal at a frequency F(t), and a receive branch (RX, 405, 410, 420, 430, 460) arranged to receive a radar signal, wherein the receive branch comprises an interference monitoring circuit (430) configured to monitor frequencies adjacent to the frequency F(t) for interference, and to generate a control signal (440) if interference is detected at the adjacent frequencies, wherein the transmit branch is arranged to be paused in response to the control signal (440).

Abstract: A radar system (201) for a vehicle (200), comprising a control unit (203) and a radar transceiver arrangement (202) with at least one ego radar transceiver (204), where, for the at least one ego radar transceiver (204), the control unit (203) is adapted to: determine a present direction (D, DA) of the ego radar transceiver (204), determine a reserved frequency band (B0) corresponding to the present direction (D, DA), and to determine a first extended frequency band (B1) comprising and extending beyond the reserved frequency band (B0), wherein the control unit is further adapted to: detect presence of an interfering radar transceiver in the first extended frequency band, and operating the ego radar transceiver (204) in the first extended frequency band (B1) in case an interfering radar transceiver is not detected in the first extended frequency band and operating the ego radar transceiver (204) in the reserved frequency band (B0) otherwise.

Abstract: A radar system (210) for a vehicle (200), comprising a plurality of radar transceivers (202, 203, 204, 205) and a control unit (208). Each radar transceiver (202, 203, 204, 205) is associated with a main pointing direction (P1, P2, P3, P4) and a certain frequency sub-band (A, B, C, D), where the sub-bands (A, B, C, D) together form a certain dedicated frequency band. The control unit (208) is adapted to define heading intervals which divide a full turn interval 0°-360° into sections, assign a corresponding sub-band (A, B, C, D) to each heading interval, determine a present vehicle heading (F), and to assign a corresponding sub-band (A, B, C, D) to each one of the radar transceivers (202, 203, 204, 205) in dependence of the heading interval that includes the present vehicle heading (F).

Abstract: A radar transceiver (400) including a transmit branch (450, 455, TX) arranged to transmit a radar signal at a frequency F(t), and a receive branch (RX, 405, 410, 420, 430, 460) arranged to receive a radar signal, wherein the receive branch comprises an interference monitoring circuit (430) configured to monitor frequencies adjacent to the frequency F(t) for interference, and to generate a control signal (440) if interference is detected at the adjacent frequencies, wherein the transmit branch is arranged to be paused in response to the control signal (440).

Abstract: A vehicle radar system (3) having at least one transceiver arrangement (7) arranged to generate, transmit and receive reflected radar signals. The transceiver arrangement (7) includes an ADC arrangement (10) that is arranged to output a digital IF signal (20) in a time domain to a DSP arrangement (12). A first DSP function (12a) is arranged to: identify and retain sample points of the digital IF signal (20) in a spectral domain with signal components that exceed a certain level threshold, such that an approximation signal (36) is formed in the time domain, identify possible sections (37) of the digital IF signal (20) in the time domain that exhibit interference exceeding an interference threshold, determine whether or not to replace such sections (37) with equivalent sections (38) of the approximation signal (36), and if applicable, replace such sections (37) with equivalent sections (38) of the approximation signal (36).

Abstract: A system and method for mitigating interference in a frequency-modulated continuous-wave radar processing system is defined. Random inter-pulse jitter is implemented in a transmitted radar signal to prevent identification of false tracks due to interfering radar signals. Random intra-pulse jitter of time and/or frequency is implanted to create spreading of false targets and provide a method to distinguish false targets from true targets. Adjacent sensors in a multi-sensor radar system are alternatingly configured to transmit either upward ramping or downward ramping frequencies to mitigate interference between adjacent sensors in the same radar system.

Abstract: A vehicle radar system (3) having at least one transceiver arrangement (7) arranged to generate, transmit and receive reflected radar signals. The transceiver arrangement (7) includes an ADC arrangement (10) that is arranged to output a digital IF signal (20) in a time domain to a DSP arrangement (12). A first DSP function (12a) is arranged to: identify and retain sample points of the digital IF signal (20) in a spectral domain with signal components that exceed a certain level threshold, such that an approximation signal (36) is formed in the time domain, identify possible sections (37) of the digital IF signal (20) in the time domain that exhibit interference exceeding an interference threshold, determine whether or not to replace such sections (37) with equivalent sections (38) of the approximation signal (36), and if applicable, replace such sections (37) with equivalent sections (38) of the approximation signal (36).

Abstract: A system and method for mitigating interference in a frequency-modulated continuous-wave radar processing system is defined. Random inter-pulse jitter is implemented in a transmitted radar signal to prevent identification of false tracks due to interfering radar signals. Random intra-pulse jitter of time and/or frequency is implanted to create spreading of false targets and provide a method to distinguish false targets from true targets. Adjacent sensors in a multi-sensor radar system are alternatingly configured to transmit either upward ramping or downward ramping frequencies to mitigate interference between adjacent sensors in the same radar system.