Abstract: An information processing apparatus includes a generation unit that generates a calibration parameter on the basis of a phase difference vector and a reference phase difference vector that is a reference, where the phase difference vector is calculated on the basis of a sensing result, the sensing result is measured by a distance measurement sensor, the distance measurement sensor includes a plurality of first reception antennas and one or more transmission antennas, the plurality of first reception antennas includes a reference reception antenna and one or more second reception antennas, and the phase difference vector is a phase difference vector between the reference reception antenna and each of the one or more second reception antennas.

Abstract: The present disclosure relates to an automatic interference/jamming detection system for use with a GNSS receiver or a GNSS receiver and off-the-shelf jamming detector. The automatic jamming detection system utilizes one of the following two techniques: using a jamming detector in conjunction with a GNSS receiver in order to analyze received data for key data indicators for suspicious interference/jamming activities such as signal-to-noise ratio, phase or maximum power, or using a trained jamming detection algorithm to convert received/stored GNSS data into spectrograms to visually highlight anomalies or potential interference/jamming events and then further using the Box-Cox transform to train the algorithm in order to transform data into a normal distribution for comparison against user tunable thresholds to further highlight potential interference/jamming events.

Abstract: According to an example embodiment, a client device is configured to receive a first positioning reference signal; identify an orientation of a polarisation of the first positioning reference signal based on the received first positioning reference signal; estimate an orientation of the client device based on at least the identified orientation of the polarisation of the first positioning reference signal; and provide the orientation estimate to a network node device, Devices, methods, and computer programs are disclosed.

Abstract: An apparatus comprising an interface and a processor. The interface may be configured to present a probe signal and receive raw radar data generated in response to a reflection of the probe signal. The processor may be configured to generate a plurality of profile configurations, interleave the plurality of profile configurations into the probe signal, and reconstruct a radar output based on the plurality of profile configurations in response to the raw radar data. Interleaving the profile configurations into the probe signal may enable the raw radar data to be received comprising information about an environment corresponding to each of the profile configurations at one time frame. Interleaving the profile configurations may enable the processor to extract the information about the environment corresponding to each of the profile configurations independent from each other. The radar output may comprise the information about the environment.

Abstract: An auxiliary installation tool for a vehicle radar includes an angle ruler. The angle ruler includes a first reference section, a second reference section, and a radar installation section. The first reference section and the second reference section are connected and intersect at a right angle, wherein during measurement, the first reference section is configured for aligning with a vehicle body horizontal line, the second reference section is configured for aligning with or parallel to a vehicle rear horizontal line, the vehicle body horizontal line and the vehicle rear horizontal line respectively extend along the body and the rear of a vehicle and intersect at a corner of the vehicle. The radar installation section is correspondingly located at the corner of the vehicle, and the radar installation section and the second reference section are connected and intersect at a radar installation angle.

Abstract: A radar signal processing device includes: a forming unit to form beams by using reception signals; a compensation unit to compensate for a phase within a range frequency; a generation unit to generate an image of each beam by applying Fourier transform in an azimuth direction to the beams (with phases compensated; an identification unit to identify a position of a target object based on the image; a calculation unit to calculate power of each beam represented by the image of each beam at a position of the target object; a computing unit to compute an antenna gain of each beam at a position of the target object; and an angle measurement unit to measure angle on the target object by performing maximum likelihood estimation of comparing the power of each beam with the antenna gain of each beam at the position of the target object.

Abstract: Disclosed are exemplary embodiments of patterned electromagnetic interference (EMI) mitigation materials (e.g., EMI absorbers, thermally-conductive EMI absorbers, etc.) including carbon nanotubes. The carbon nanotubes may comprise single-walled carbon nanotubes, multi-walled carbon nanotubes, and/or carbon nanostructures comprising a branched network of crosslinked carbon nanotube structures. For example, an EMI mitigation material may comprise a filled dielectric including a pattern of EMI absorbers. The filled dielectric comprises carbon nanotubes.

Abstract: A transmitting device location estimation device and a transmitting device location estimation method for estimating the location of a transmitting device under water are disclosed. A transmitting device location estimation device, in a transmitting device location estimation device for estimating the location of a transmitting device under water, is characterized by comprising: a distance location estimation unit that estimates the distance and location of the transmitting device based on the time taken to receive the transmission signal transmitted by the transmitting device and the speed of the transmission signal; a direction estimation unit that estimates the direction of the transmitting device; and an estimated location confirmation unit that confirms the estimated location of the transmitting device based on the estimated distance and location of the transmitting device and the estimated direction of the transmitting device.

Abstract: There is provided mechanisms for determining direction of a second radio transceiver device with respect to a first radio transceiver device. The first radio transceiver device is configured to communicate with beams in a beam set. A method is performed by a processing unit. The method comprises obtaining a vector of radio parameter measurements from measurements performed on a radio link between the first radio transceiver device and the second radio transceiver device for one and the same location of the second radio transceiver device. The vector comprises a radio parameter measurement per each beam in the beam set. The method comprises determining the direction of the second radio transceiver device with respect to the first radio transceiver device by comparing the vector of radio parameter measurements to a set of candidate direction profiles.

Abstract: Provided is a radar detector that aids in management of unimportant sources, dynamically improving handling of such sources based upon previously-stored geographically-referenced information on such sources. The detector determines location of the detector, and compares it to locations of known sources, to improve handling of such detections. The detector may ignore detections received in an area known to contain a stationary source, or may only ignore specific frequencies or handle frequencies differently based upon historic trends of spurious police radar signals at each frequency, or based on geofenced locations. GPS is used to establish current physical coordinates. The detector maintains a list of the coordinates of known stationary source “offenders” and geofence coordinates or boundaries in nonvolatile memory. When a microwave or laser source is detected, it may compare current coordinates to geofence boundaries and/or sources in this list.

Abstract: Disclosed herein are systems and methods for estimating target ranges, angles of arrival, and speed using optimization procedures. Target ranges are estimated by performing an optimization procedure to obtain a denoised signal, performing a correlation of a transmitted waveform and the denoised signal, and using a result of the correlation to determine an estimate of a distance between the sensor and at least one target. Target angles of arrival are estimated by determining ranges at which targets are located, and, for each range, constructing an array signal from samples of received echo signals, and using the array signal, performing another optimization procedure to estimate a respective angle of arrival for each target of the at least one target. Doppler shifts may also be estimated using another optimization procedure. Certain of the optimization procedures use atomic norm techniques.

Abstract: A method with grid map generation includes: determining position information of a moving object corresponding to a first time step based on a position sensor of the moving object; determining detection information of nearby objects present around the moving object corresponding to the first time step based on a radio detection and ranging (radar) sensor of the moving object; selecting a still object in a moving range of the moving object from among the nearby objects, based on the position information and the detection information; updating a point cloud determined based on the radar sensor in a previous time step of the first time step, based on the position information and on detection information of the still object comprised in the detection information of the nearby objects; and generating a grid map based on an occupancy probability for each grid of the updated point cloud.

Abstract: An apparatus comprising an interface and a processor. The interface may be configured to receive a stream of data from a radar. The processor may be configured to receive the stream, process a first data cube from the data during a first frame, process a second data cube from the data during a second frame, perform continuous interleaving of the second data cube with the first data cube as the data is received, generate first output data in response to the first data cube and generate second output data in response to the continuous interleaving. The first time frame may overlap with the second time frame after the second time frame starts to enable the continuous interleaving. Performing the continuous interleaving may enable a limited variation between the data cubes. The limited variation may enable the second output data to be derived from the first output data.

Abstract: A reading apparatus includes a mechanism to move an antenna between first and second positions, and a controller configured to: (a) control the antenna to transmit radio waves to wireless tags each attached to an object when the antenna is between the first and second positions; acquire, from response waves, information registered in each tag and indicating attributes of the object and the tag, and signal values of the response waves; and calculate an estimated position of each tag and a reliability level thereof based on the values. When the level of the position of a tag is less than a threshold or when the information of a tag indicates an attribute that can affect radio communications, the controller performs step (a) again, acquires signal values of response waves received from the tag, and calculates an estimated position of the tag and a reliability level thereof based on the values.

Abstract: An RF receiver may include antenna elements to receive RF signals, and electro-optic modulators to generate corresponding upconverted optical signals by mixing an RF signal with an optical carrier beam. The RF receiver may include a transmission array having a first bundle of optical waveguides that receive and transmit upconverted optical signals from their ends. The ends may be arranged in a first pattern. The RF receiver may include an interference space to receive the upconverted optical signals to form a composite beam, and an array of single mode optical fibers that have lenses positioned in a detection plane to receive a portion of the composite beam. The first pattern of the ends generates an RF emitter interference pattern at the detection plane, and the single mode optical fiber lenses have a geometric arrangement that corresponds to the first RF emitter interference pattern.

Abstract: A system intended to be installed on a motor vehicle, comprising: a capacitive electrode (110), for implementing capacitive type presence detection; a transmitting and receiving antenna (120), surrounding the capacitive electrode (110); an electrically conductive line (130), located between the capacitive electrode and the transmitting and receiving antenna; a reference capacitor, connected between the capacitive electrode (110) and the electrically conductive line (130); and a microcontroller, configured to measure a voltage representing the capacitance of the measurement capacitor. The invention allows the sensitivity of presence detection by the capacitive electrode to be improved.

Abstract: A delay calibration circuit and method, an analog-to-digital converter, a radar sensor, and a device are provided. The delay calibration circuit monitors a timing relationship between signals in a chip in real time to extract PVT information, dynamically adjusts conversion timing of an asynchronous SAR ADC, maximally utilizes an available conversion time in each cycle of the asynchronous SAR ADC, improves the robustness of the asynchronous SAR ADC, and does not affect the normal operation of the asynchronous SAR ADC.

Abstract: Airfield surveillance unit (11) for detecting airfield traffic and airfield multilateration system comprising such airfield surveillance unit. The airfield surveillance unit comprises a power supply module (113), a first radio antenna (111) configured to receive an aircraft transponder signal, a receiver module (112) coupled to the power supply module (113) and to the first radio antenna (111) and comprising a first data communication port (1122, 1123). The receiver module (112) is operable to convert the aircraft transponder signal received by the first radio antenna (111) to a multilateration-purpose signal for transmission via the first data communication port. The airfield surveillance unit further comprises a second radio antenna (118) and a 5G communication module (117) coupled to the power supply module (113) and configured to be coupled to the second radio antenna for operating as a transceiver for a mission critical private 5G cellular network.

Abstract: A system for calibrating the multi-element antenna can include a computer including a processor and memory, wherein the memory stores instructions executable by the processor to detect a location of a laser signal incident on a receiving surface, the laser signal having been reflected from a reflector positioned over an area of a multi-element antenna. The instructions may additionally include instructions to compute a differential phase of an element of the multi-element antenna based on the detected location of the incident laser signal.

Abstract: An electronic device includes a processor configured to: receive a Radio Frequency (RF) signal of a designated frequency band from an external electronic device by using at least two antennas among the multiple antennas; acquire first angle-of-arrival data of the RF signal, based on at least a part of the RF signal; determine a posture of the electronic device based on tilt information of the electronic device provided from a sensor module; based on the electronic device that is determined to be tilted in the first direction or the second direction; identify a compensation value corresponding to tilt information of the electronic device; acquire second angle-of-arrival data by applying the compensation value to the first angle-of-arrival data; and determine a location of the external electronic device based on the second angle-of-arrival data.