Embodiments include methods, systems and computer readable storage medium for a method for determining a fine direction of arrival (DOA) for a target is disclosed. The method includes receiving, by a plurality of receivers of a radar system, radar signals reflected by a target. The method further includes mitigating, by the radar system, phase shifts in the radar signals caused by a motion of the target. The method further includes determining, by the radar system, the fine DOA in response to the mitigation of phase shifts and based on the radar signals. The method further includes estimating and storing, by the radar system, a Doppler frequency based on the fine DOA.

The present disclosures discloses a method of target feature extraction based on millimeter-wave radar echo, which mainly solves the problems that techniques in the prior art cannot fully utilize raw radar echo information to obtain more separable features and cannot accurately distinguish targets with similar physical shapes and motion states. The method is implemented as follows: acquiring measured data of targets, generating an original RD map, and removing ground clutter of the map; sequentially performing target detection, clustering and centroid condensation on the RD map after the ground clutter removal; acquiring a continuous multi-frame RD maps and carrying out the target tracking; according to the tracking trajectory, selecting candidate areas and extracting features based on a single piece of RD map and features based on two successive RD maps, respectively.

For example, a radar processor may include an input to receive radar Receive (Rx) information based on radar Rx signals received by a plurality of Radio Heads (RHs); and one or more Baseband (BB) Processing Units (BPUs) including a plurality of processing resources configured to generate radar information by processing the radar Rx information according to a plurality of BB-processing tasks. The one or more BPUs may be configured to allocate the plurality of processing resources to the plurality of RHs based on an RH to resource (RH-resource) allocation scheme. The RH-resource allocation scheme may be configured to define a plurality of RH-specific resource allocations for the plurality of RHs, respectively. For example, an RH-specific resource allocation for an RH may define a plurality of RH-allocated processing resources to perform the plurality of BB-processing tasks based on radar Rx information from the RH.

In an embodiment, a method for generating a target set using a radar includes: generating, using the radar, a plurality of radar images; receiving the plurality of radar images with a convolutional encoder; and generating the target set using a plurality of fully-connected layers based on an output of the convolutional encoder, where each target of the target set has associated first and second coordinates.

Systems and methods for operating radar systems. The methods comprise, by a processor: receiving point cloud information generated by at least one radar device and a spatial description for an object; generating a plurality of point cloud segments by grouping data points of the point cloud information based on the spatial description; arranging the point cloud segments in a temporal order to define a radar tentative track; performing dealiasing operations using the radar tentative track to generate tracker initialization information; and using the tracker initialization information to generate a track for the object.

In an embodiment, a method for generating a target set using a radar includes: generating, using the radar, a plurality of radar images; receiving the plurality of radar images with a convolutional encoder; and generating the target set using a plurality of fully-connected layers based on an output of the convolutional encoder, where each target of the target set has associated first and second coordinates.

Reception antennas include first antennas at positions different in a first direction, second antennas at positions different in a second direction perpendicular to the first direction, and a third antenna different from the first or second antenna. The first and second antennas include one overlapping antenna. The third antenna is arranged at a position different in the second direction from a position of the first antennas. The third antenna is arranged at a position a prescribed spacing apart in the first direction from a position of the second antennas. At least one spacing of the first antennas is the prescribed spacing. Transmission antennas include fourth antennas arranged in the first direction and fifth antennas arranged in the second direction. The fourth antennas and the fifth antennas include one overlapping antenna. A spacing of the fourth antennas is wider in the first direction than an aperture length of the first antennas.

An apparatus (100) for compensating for weather-independent Doppler expansions in radar signals of a weather radar system (200) is disclosed. The device comprises: a receiving device (110) for receiving a representation (50) of the radar signals, a calculation device (120) and a compensation device (130). The representation includes pixels of a range Doppler matrix. The calculation device (120) is designed to calculate azimuth angles (Azi) for the pixels (75) by means of fine bearing. The compensation device (130) is designed to correct weather-independent Doppler shifts for the pixels (75) based on the calculated azimuth angle (Azi; AziMopu) and thus to compensate for the weather-independent Doppler expansions and to provide them as a compensated representation (150).

A vehicle, radar system of the vehicle and method of operating the vehicle. A transmit antenna transmits a radio wave and a plurality of receive antennae receive echo radio waves from an object receptive to the transmitted radio wave, wherein the echo radio waves includes short-range interference. A processor generates a plurality of radar data arrays for the return signals, wherein each radar data array represents the return signal received at a corresponding receiver antennae, estimates an amount of short-range interference present in the return signal of each radar data array, subtracts the estimate of short-range interference from each of the radar data array to obtain a plurality of clutter-free radar data arrays, and detects the object using at least the plurality of clutter-free radar data arrays. A navigation system navigates the vehicle based on the detection of the object.

An apparatus (100) for compensating for weather-independent Doppler expansions in radar signals of a weather radar system (200) is disclosed. The device comprises: a receiving device (110) for receiving a representation (50) of the radar signals, a calculation device (120) and a compensation device (130). The representation includes pixels of a range Doppler matrix. The calculation device (120) is designed to calculate azimuth angles (Azi) for the pixels (75) by means of fine bearing. The compensation device (130) is designed to correct weather-independent Doppler shifts for the pixels (75) based on the calculated azimuth angle (Azi; AziMopu) and thus to compensate for the weather-independent Doppler expansions and to provide them as a compensated representation (150).