According to at least one embodiment, a MIMO radar arrangement includes a radar receiver configured to generate radar reception data from radio receive signals received by a plurality of radar receive antennas. The arrangement further includes one or more signal processors configured to: generate frequency domain data for a range-Doppler bin based on the radar reception data and determine one or more peaks from the generated frequency domain data. The radar arrangement further includes a trained machine learning module configured to generate, using frequency domain data corresponding to each of the of the one or more determined peaks as input, one or more output values indicating a number of detected objects within each range-Doppler bin.

Techniques to facilitate radar data processing are disclosed. In one example, a radar system includes a frame generation circuit and a frame processing circuit. The frame generation circuit is configured to receive radar signals. The frame generation circuit is further configured to convert the radar signals to at least one frame having a camera interface format. The frame processing circuit is configured to receive the at least one frame via a camera interface. The frame processing circuit is further configured to process the at least one frame. Related methods and devices are also provided.

According to one aspect, a radar system suitable for use in an autonomous vehicle is configured to provide a relatively high resolution in azimuth. The radar system may include multiple antenna blocks which may each include a transmitter and a receiver, and may be provided in an array, e.g., in a horizontal array. Each radar block may define an airgap therein which includes azimuth power dividers, elevation power dividers, vertical power dividers, and open-ended waveguides.

According to one aspect, a radar system suitable for use in an autonomous vehicle is configured to provide a relatively high resolution in azimuth. The radar system may include multiple antenna blocks which may each include a transmitter and a receiver, and may be provided in an array, e.g., in a horizontal array. Each radar block may define an airgap therein which includes azimuth power dividers, elevation power dividers, vertical power dividers, and open-ended waveguides.

Example embodiments relate to transmitter-receiver leakage suppression in integrated radar systems. One embodiment includes a front-end for a radar system. The front-end includes a transmit path that includes a power amplifier and a transmit antenna. The transmit path is configured to transmit a transmit signal. The front-end also includes a receive path that includes a receive antenna and a low-noise amplifier. The receive path is configured to receive at least a leakage from the transmit path. The receive path is configured to generate an amplified signal of the leakage. Further, the front-end also includes a reference path. In addition, the front-end includes a compensation unit in the reference path. The compensation unit is configured to generate compensation for a leakage path between the transmit path and the receive path. The compensation unit is configured to apply the generated compensation to the reference signal to generate a compensated reference signal.

Example embodiments relate to transmitter-receiver leakage suppression in integrated radar systems. One embodiment includes a front-end for a radar system. The front-end includes a transmit path that includes a power amplifier and a transmit antenna. The transmit path is configured to transmit a transmit signal. The front-end also includes a receive path that includes a receive antenna and a low-noise amplifier. The receive path is configured to receive at least a leakage from the transmit path. The receive path is configured to generate an amplified signal of the leakage. Further, the front-end also includes a reference path. In addition, the front-end includes a compensation unit in the reference path. The compensation unit is configured to generate compensation for a leakage path between the transmit path and the receive path. The compensation unit is configured to apply the generated compensation to the reference signal to generate a compensated reference signal.

Example embodiments relate to radar transceivers. One embodiment includes a radar transceiver. The radar transceiver includes a chirp generator for generating a chirp having an initial frequency and a final frequency. The radar transceiver also includes a controllable variable gain amplifier having an input connected to an output of the chirp generator. Further, the radar transceiver includes a control unit connected to a control input on the chirp generator and to a control input on the controllable variable gain amplifier. The control unit is adapted to output a first control signal to the chirp generator such that the chirp generator starts generating the chirp. The control unit is also adapted to output a second control signal to the controllable variable gain amplifier such that the controllable variable gain amplifier starts increasing an amplification in the controllable variable gain amplifier from a first amplification level to a second amplification level.

Radar measuring device including: a first generator of a first periodic radar signal whose frequency varies linearly, over at least one portion T.sub.ramp of a period T.sub.in, in a frequency band B; a transmit antenna coupled to an output of the first generator and configured to transmit the first radar signal; a second generator of a second periodic radar signal whose frequency varies linearly, over said portion T.sub.ramp of the period T.sub.in, in the frequency band B, which is generated with the same start-up phase as the first radar signal and having, relative to the first radar signal, a configurable delay τ.sub.mix; a receive antenna configured to receive at least one echo of the first radar signal; a mixer comprising a first input coupled to the receive antenna and a second input coupled to an output of the second generator.

Radar measuring device including: a first generator of a first periodic radar signal whose frequency varies linearly, over at least one portion T.sub.ramp of a period T.sub.in, in a frequency band B; a transmit antenna coupled to an output of the first generator and configured to transmit the first radar signal; a second generator of a second periodic radar signal whose frequency varies linearly, over said portion T.sub.ramp of the period T.sub.in, in the frequency band B, which is generated with the same start-up phase as the first radar signal and having, relative to the first radar signal, a configurable delay τ.sub.mix; a receive antenna configured to receive at least one echo of the first radar signal; a mixer comprising a first input coupled to the receive antenna and a second input coupled to an output of the second generator.

The present disclosure relates to a radar apparatus including a transmitter for transmitting a frequency-modulated continuous-wave radar signal, wherein the transmitter is configured to generate the continuous-wave radar signal with a sinusoidally varying modulation frequency, a receiver for receiving a reflection signal of the frequency-modulated continuous-wave radar signal, which is reflected by at least one object, and for mixing the reflection signal with the frequency-modulated continuous-wave radar signal in order to obtain a downmixed reception signal, and a device for correlating the downmixed reception signal with at least one pattern signal which is based on the modulation frequency and a predetermined distance.