Abstract: A computer-implemented method for processing radar information comprises receiving synthetic aperture radar (SAR) data that specifics a sequence of radar acquisitions of a target area taken over a particular acquisition time. The method comprises forming a plurality of sub-aperture images, wherein each sub-aperture image is associated with radar acquisitions of the target area taken over a particular interval of the acquisition time. The method further comprises determining, based on the plurality of sub-aperture images, velocities associated with one or more target objects moving within the target area; and generating an image associated with the SAR data that depicts the one or more target objects and the velocities associated with one or more target objects.

Abstract: A method and device for tracking a movable target, relating to the technical field of tracking. In the situation where a tracked movable target travels at a low speed or stops traveling, whether the target is a stationary object or a tracked movable target can still be identified. The method for tracking a movable target comprises: acquiring radar monitoring data of all radar monitoring targets; extracting lateral position data of each radar monitoring target from the radar monitoring data; determining a lateral position change of each radar monitoring target according to the extracted lateral position data; and when the lateral position change of one or more radar monitoring targets from among all the radar monitoring targets is greater than a pre-set threshold value, determining that the one or more radar monitoring targets are tracked movable targets.

Abstract: An electronic device may include communications circuitry, sensing circuitry, and a set of antennas having first and second feeds for covering different polarizations. The communications circuitry may transmit signals with a first polarization using each of the antennas and may concurrently transmit signals with a second polarization using all but a selected one of the antennas. The sensing circuitry may concurrently transmit sensing signals with the first polarization using one of the antennas and may receive sensing signals with the second polarization using the selected antenna. The sensing signals may include chirp signals generated to include muted periods that correspond to a range of frequencies that overlap frequencies at which the wireless circuitry is subject to radio-frequency interference. This may allow for concurrent wireless communications and sensing operations without interference between the communications circuitry and the sensing circuitry.

Abstract: Empirical data fitting with Ordered Statistic Constant False Alarm Rate (CFAR) detection is described. An empirical approach is used to derive data for indicated expected target responses to provide a CFAR in a variety of different noise distributions. Multiple (e.g., at least two) ordered-statistics are extracted from radar data, which are then used identify a ratio for mapping to an appropriate CFAR multiplier of quantile function for a distribution at hand. Empirical data fitting evaluates an ordered-statistic ration (OSR) against expected OSR values. From evaluating the expected OSR values derived from multiple test frames, a mapping between measured OSR values and their appropriate CFAR multiplier is derived. Through this empirical data fitting, a radar system can perform CFAR detection to account for shape shifts or other variations in a noise distribution beyond just fluctuations in noise strength.

Abstract: Systems and methods providing antenna element feed path component management for facilitating millimeter wave communication are described. Embodiments can enable and provide mitigation of thermal, power consumption, and/or maximum permissible exposure issues with respect to millimeter wave communication, such as by 5th generation (5G) or new radio (NR) compliant user equipment. Accordingly, embodiments are configured to manage transceiver antenna element feed path components to mitigate thermal, power consumption, and/or MPE concerns. For example, a communication device configured in accordance with concepts herein may reduce or otherwise control temperatures of various components, device power consumption, and/or user exposure to millimeter wave energy, such as to improve user experience, avoid component failure, extend battery life, etc.

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for multistatic radar communications. In one aspect, a wireless communication device may determine a distance and direction of one or more receiving devices. The wireless communication device may transmit, to the one or more receiving devices, timing information indicating a timing relationship between a codeword sequence and one or more pulses. The wireless communication device may transmit a respective codeword of the codeword sequence in the direction of each of the one or more receiving devices. The wireless communication device may further transmit the one or more pulses in a plurality of directions. The wireless communication device may receive feedback from at least one of the one or more receiving devices and determine ranging information about an object based on the feedback and the distance or direction of at least one receiving device.

Abstract: Methods, systems, and computer program products of this disclosure provide a staged transmission service (e.g., a data transfer service for downloading or uploading) at a transfer node to a device in motion (DIM) wirelessly paired to the transfer node. When a DIM accepts a download task, the download node paired with the DIM receives a notice from the DIM of the acceptance. The download node retrieves, from a data repository, a dataset specified by the download task. A processing device of the download node may stage the dataset in a staged download service in preparation to transfer the dataset to the DIM. The processing device may initiate a transfer of at least a portion of the dataset to the DIM responsive to one or more data transfer properties satisfying a predefined set of conditions. The data transfer properties are determined based on a location and a movement of the DIM.

Abstract: A system for radar interference mitigation, preferably including one or more transmitter arrays, receiver arrays, and/or signal processors, and optionally including one or more velocity sensing modules. A method for radar interference mitigation, preferably including transmitting a set of probe signals, receiving a set of reflected probe signals, and/or evaluating interference, and optionally including decoding the set of received probe signals and/or compensating for interference.

Abstract: A vehicular lamp fitting and the like capable of preventing (or suppressing) vibrations of a radar unit (and as a result, capable of preventing the detection area of the radar unit from being significantly changed) are provided. A vehicular lamp fitting includes: a lamp housing; an outer lens attached to the lamp housing, the outer lens including a recessed part and forming a first space between the outer lens and the lamp housing; a lamp unit disposed in the first space; a radar cover disposed while covering the recessed part, and forming a second space between the radar cover and the recessed part; a bracket disposed in the second space; a radar unit detachably fixed to the bracket; and a first fixing part fixing one end of the bracket to the outer lens; and a second fixing part fixing the other end of the bracket to the lamp housing.

Abstract: Embodiments described herein provide an industrial machine that includes one or more indicators mounted to an external portion of the industrial machine. The one or more indicators are configured to provide an indication to an individual external to the industrial machine that a proximity detection system has detected his or her presence external to the industrial machine. The one or more indicators are controlled to provide the indication to the individual using, for example, different colors of light, different intensities of light, or activation of different indicators.

Abstract: Example embodiments relate to methods and systems for implementing radar electronic support measure operations. A vehicle's processing unit may receive information relating to electromagnetic energy radiating in an environment of the vehicle that is detected using a vehicle radar system. The electromagnetic energy originated from one or more external emitters, such as radar signals transmitted by other vehicles. The processing unit may determine a spectrum occupancy representation that indicates spectral regions occupied by the electromagnetic energy and subsequently adjust operation of the vehicle radar system based on the spectrum occupancy representation to reduce or mitigate interference with the external emitters in the vehicle's environment. In some examples, the vehicle radar system may be switched to a passive receive-only mode to measure the electromagnetic energy radiating in the environment from other emitters.

Abstract: Example embodiments relate to techniques for using vehicle image radar to estimate rain rate and other weather conditions. A computing device may receive radar data from a radar unit coupled to a vehicle. The radar data can represent the vehicle's environment. The computing device may use the radar data to determine a radar representation that indicates backscatter power and estimate, using a rain rate model, a rain rate for the environment based on the radar representation. The computing device may then control the vehicle based on the rain rate. In some examples, the computing device may provide the rain rate estimation and an indication of its current location to other vehicles to enable the vehicles to adjust routes based on the rain rate estimation.

Abstract: A radio frequency identification (RFID) system includes an array of antennas to distinguish line-of-sight (LOS) paths from non-line-of-sight (NLOS) paths. The distance between adjacent antennas in the array of antennas is less than half the wavelength of the radio frequency (RF) signal of the system. Each antenna in the antenna array is also digitally controlled to change relative phase difference among the antennas, thereby allowing digital steering of the array of antennas across angles of arrival (AOAs) between 0 and ?. The digital steering generates a plot of signal amplitudes as a function of AOAs. LOS paths are distinguished from NLOS paths based on the shapes (e.g., depth, gradient, etc.) of local extremes (e.g., maxima or minima) in the plot.

Abstract: Systems and methods for resolving elevation ambiguity include acquiring, using a 1-D horizontal radar antenna array, a radar frame with range and azimuth information, and predicting a target elevation based on the frame by computing a depth map with a plurality of target depths assigned to corresponding azimuth-elevation pairs. Computing the depth map includes processing the radar frame with an encoder-decoder structured deep convolutional neural network (CNN). The CNN may be trained with a dataset including training radar frames acquired in a number of environments, and compensated ground truth depth maps associated with those environments. The compensated ground truth depth maps may be generated by subtracting a ground-depth from a corresponding ground truth depth map. The ground truth depth maps may be acquired with a 2-D range sensor, such as a LiDAR sensor, a 2-D radar sensor, and/or an IR sensor. The radar frame may also include Doppler data.

Abstract: A wireless network switching method. In the method, a station and a target access device directly generate a message integrity check key by means of a domain key, and verify an integrity code on the basis of the message integrity check key, so as to realize the authentication of two parties; and when the authentication of the opposite party is successful, session keys are generated by means of the domain key and in conjunction with random numbers of the two parties, thereby simplifying a switching process and realizing secure and efficient network switching. Further disclosed are a corresponding station and a corresponding access device.

Abstract: A method for predicting a false positive detection by a radar sensor includes simulating a radar signal, determining a plurality of reflected radar signal rays based on the simulated radar signal and data regarding at least one vehicle component that may be a source of a false positive detection based on received reflected radar signal rays, selecting detectable rays from the reflected radar signal rays, determining an energy level for each detectable ray based on a reflectivity of the at least one vehicle component, clustering at least some of the detectable rays based on a distance between a reflection origin location of at least two of the detectable rays being within a predefined range, determining an energy level of clustered detectable rays, and determining a false positive based on the determined energy level of the clustered detectable rays being above an energy threshold.

Abstract: An antenna array apparatus includes: first antenna elements arranged to form a first radiation pattern with a recessed portion at the center of the first radiation pattern; and second antenna elements arranged to form a second radiation pattern with a convex portion at the center of the second radiation pattern.

Abstract: A method for the phase calibration of a MIMO radar sensor having an array of transmitting and receiving antenna elements that are offset from each other in at least one direction, and high-frequency modules, which are each assigned to a part of the array. The array is subdivided into transmitting subarrays and receiving subarrays in such a manner, that each subarray is assigned to exactly one of the high-frequency modules and at least two receiving subarrays, which belong to different high-frequency modules, are offset from each other in the at least one direction and are aligned with each other in the direction perpendicular to it. The method includes a calibration which corrects a receiving control vector with the aid of a known relationship between first and second comparison variables for the respective receiving subarrays.

Abstract: A network metrics repository stores cell performance metrics and rule-based data measured during operation of a communication network. A policy neural network circuit has an input layer having input nodes, a sequence of hidden layers, and at least one output node. A processor trains the policy neural network circuit to approximate a baseline rule-based policy for controlling a tilt angle of a remote electrical tilt (RET) antenna based on the rule-based data. The processor provides a live cell performance metric to input nodes, adapts weights that are used by the input nodes responsive to output of the output node, and controls operation of the tilt angle of the RET antenna based on the output The output node provides the output responsive to processing a stream of cell performance metrics through the input nodes. The processor controls operation of the RET antenna based on the output.

Abstract: A radar device with a housing, with a shield, with an interconnect device, with an electronic circuit arrangement, and with antennas. A circuit arrangement has electronic components, and at least some of the electronic components are arranged on a first side of the interconnect device. The antennas are arranged on a second side of the interconnect device. The shield and the interconnect device, with the components and antennas arranged on it, are surrounded by the housing. The shield has at least one hole, into which at least one of the first components (arranged on the first side of the interconnect device) protrudes, or through which at least one of the components (arranged on the first side of the interconnect device) protrudes. The remaining components (arranged on the first side of the interconnect device), with the exception of connecting elements, are arranged entirely between the first side of the interconnect device and the shield.