Abstract: An apparatus comprising an interface and a processor. The interface may be configured to receive raw radar data from a plurality of radar devices. The radar devices may each be implemented at a respective edge site and the raw radar data may comprise sparsity. The processor may be configured to receive the raw radar data corresponding to the radar devices from the interface, perform virtual aperture imaging in response the raw radar data, perform an automatic calibration of a respective mounting angle for each of the radar devices, determine respective Doppler measurements of a plurality of targets in an environment, search a histogram of the Doppler measurements, and determine an ego speed of the apparatus in response to a peak of the histogram of the Doppler measurements and the respective mounting angles of the plurality of radar devices. The radar devices may provide a field of view of the environment.

Abstract: Method and system for directing RF energy from an active retrodirective antenna array including moving elements onto a target includes: receiving a beacon from the target by each element, the scattered beacon including an RF pilot signal imposed thereon, extracting the RF pilot signal from the received scattered optical beacon, dynamically measuring a distance to an area of optical beacon illumination on the target, calculating a phase utilizing the measured distance to the area of the target and a frequency of the extracted RF pilot signal, phase conjugating the RF pilot signal based on the calculated phase, and transmitting the phase conjugated RF signal towards the target; by each element, where the phase conjugated RF signal transmitted by each element add coherently at the area of optical beacon illumination on the target to enhance power density on the target.

Abstract: A positioning device according to the present disclosure technology includes a TDOA calculator to calculate a TDOA on the basis of a peak of cross-correlation, a TDOA positioning processor to perform TDOA positioning on the basis of the TDOA, a DOA estimation processor to estimate a DOA from a reception signal received by an array antenna of at least one satellite, a DOA positioning processor to perform DOA positioning on the basis of the DOA, and an ambiguity handler to select one closest to a result calculated by the DOA positioning processor from a plurality of positioning results calculated by the TDOA positioning processor.

Abstract: A method for controlling the pointing of an antenna situated on a platform in the direction of a communications device emitting a reference signal, includes the following steps: S1) apply a first mode of pointing of the antenna using almanac data for the platform and for the communications device so as to obtain an initial position of pointing in azimuth and in elevation of the boresight of the antenna; S2) apply a second mode of pointing of the antenna, comprising at least one scan of the antenna around the initial position so as to point the antenna in a direction that maximizes a received power of the reference signal; S3) apply a third mode of pointing of the antenna wherein at least one triangulation manoeuvre is implemented for pointing the antenna based on the maximum power.

Abstract: A light-emitting element which uses a plurality of kinds of light-emitting dopants emitting light in a balanced manner and has high emission efficiency is provided. Further, a light-emitting device, a display device, an electronic device, and a lighting device each having reduced power consumption by using the above light-emitting element are provided. A light-emitting element which includes a plurality of light-emitting layers including different phosphorescent materials is provided. In the light-emitting element, the light-emitting layer which includes a light-emitting material emitting light with a long wavelength includes two kinds of carrier-transport compounds having properties of transporting carriers with different polarities. Further, in the light-emitting element, the triplet excitation energy of a host material included in the light-emitting layer emitting light with a short wavelength is higher than the triplet excitation energy of at least one of the carrier-transport compounds.

Abstract: In an aspect, a radar controller determines a radar slot format that configures transmission of a reference radar signal on a first symbol over a first link from a first base station to a second base station followed by at least one target radar signal on at least one second symbol over at least one second link from the first base station to the second base station, and transmits an indication of the radar slot format to the first base station and the second base station. The first base station transmits, and the second base station receives, the reference radar signal and the at least one target radar signal in accordance with the radar slot format.

Abstract: Snapshot receiver that comprises a correlator module for correlating incoming GNSS signals and a transform module that transforms resulting correlated outputs using a Fractional Fourier Transform (FrFT) process, to thereby compensate for weak and dynamic signals. The output of the transform module is an estimated Doppler rate with high accuracy. The estimated Doppler rate is passed to a super-resolution-measurement (SRM) module, which outputs error values of the estimated Doppler rate and a pseudorange (measured distance-to-satellite) via a phase dead reckoning (DR) calculation for the snapshot receiver. The pseudorange and error values are passed to a navigator module that determines position information based on those inputs. In some embodiments, the SRM module comprises a maximum likelihood estimator (MLE).

Abstract: A method of generating an ultra-wideband electromagnetic pulse includes initiating a voltage source, producing a voltage pulse using the voltage source, and receiving the voltage pulse at a bipolar vector inversion generator (VIG) assembly. The method also includes compressing and amplifying the voltage pulse using the bipolar VIG assembly to produce a compressed, differential voltage pulse, further compressing the compressed, differential voltage pulse using a peaking gap assembly to produce a balanced peak pulse, applying the balanced peak pulse to one or more sets of antenna arms, and radiating the ultra-wideband electromagnetic pulse using an antenna assembly.

Abstract: Described herein are techniques for adapting usage of radar devices to collect data about target objects based on situational awareness data. Techniques described herein may involve selecting a radar operational configuration (e.g., waveform type, and/or transmitter and/or receiver configuration) and/or frame rate. According to various embodiments, situational awareness data may be indicative of at least one characteristic relating to a vehicle, a target object, and/or the vehicle's environment such as velocity data indicative of the velocity of the vehicle, velocity data indicative of the velocity of a target object, data indicative of at least one weather condition associated with the vehicle's environment, data indicative of the type of road in which the vehicle is traveling, data indicative of the level of traffic in the vehicle's surroundings. Techniques described herein may be deployed for use in connection with computer-assisted driving modules (e.g., ADAS and autonomous vehicles).

Abstract: A method for filtering a point cloud of a four-dimensional radar including the steps in which a data processing device receives an input of raw data of a four-dimensional radar, generates a tensor including position and Doppler information from the raw data, extracts a radar point cloud from the tensor on the basis of a threshold, and removes an outlier from the radar point cloud. A range is calculated further using Doppler information of points.

Abstract: A method comprising: Obtaining observations Z_n, and building an observation vector Z=[Z_1, . . . , Z_n, . . . , Z_N], Defining a latent variable V_n, to build a vector of latent variables V=[V_1, . . . , V_n, . . . , V_N], and Implementing a Dirichlet process involving a Gibbs sampling with a Markov chain, the sampling being repeated as follows until convergence: For n?1, . . . , N, if the observation Z_n is associated to a source, remove observation Z_n from a source corresponding to latent variable V_n, and retrieve a position posterior of this source as the observation Z_n is belonging to this source; Draw a new value of latent variable V_n, based on a conditional probability; Associate the observation Z_n to the source, and update the posterior distribution of the position for the source, and, upon convergence of the algorithm, operating a separation of the interfering sources into K independent measurement sets, and an estimation of each source position.

Abstract: A method for detecting a change in location of at least one wheel of a motor vehicle, the vehicle having at least one central processing unit, one wheel unit which includes an electronic assembly of sensors and which is mounted on the wheel, and one bidirectional communications assembly. The method notably includes a first comparison step, during which a first evaluation pattern is compared with a first reference pattern to determine whether the location of the wheel has changed, the patterns being representative of the effective location of the wheel unit in the motor vehicle.

Abstract: A radar device includes a radar front end and a radar processor. The radar front end includes transmit signal generation circuitry to generate a radar transmit signal sequence including a plurality of radar transmit signals and a power shaping component configured to receive the plurality of radar transmit signals and output the plurality of radar transmit signals with a plurality of different power levels. The radar front end includes a transmitter to transmit the plurality of radar transmit signals based on the plurality of different power levels, where the plurality of different power levels is based on a power profile associated with a window applied to digitized samples of reflections of the transmitted plurality of radar transmit signals. The radar processor is configured to apply the window across a slow-time of the digitized samples of the reflections prior to velocity processing.

Abstract: Techniques for a high-accuracy determination the position of a light user equipment (UE) using a single base station are presented. This is accomplished by leveraging communications with a premium UE having a known location relative to the base station. Wireless reference signals measured by the light UE and premium UE, along with a reference signal from the light UE to the premium UE, can be used to determine the position of the light UE geometrically. The determination can be made by the light UE, premium UE, or a location server, depending on desired functionality.

Abstract: Some embodiments of the invention pertain to methods carried out by a navigation satellite system (NSS) receiver for estimating parameters useful to determine a position. The receiver observes signals from satellites. Delta carrier phase observables are computed by subtracting observables of different epochs. An estimator uses state variables and computes their values based on the computed delta carrier phase observables. A synthetic carrier phase observable for an anchor epoch is generated, for each carrier phase observable of a terminus epoch for which one of the following applies: (i) a change in phase ambiguity occurred with respect to the corresponding carrier phase observable of the anchor epoch, and (ii) no corresponding carrier phase observable was tracked at the anchor epoch. Generated synthetic carrier phase observables are used to compute delta carrier phase observables between the anchor epoch and an epoch subsequent to the terminus epoch. Systems and vehicles are also disclosed.

Abstract: An inter-node ranging method includes a first node that sends a plurality of first sequences to a second node; the first node receives a plurality of second delayed sequences from the second node; the first node determines a first phase difference between the first sequences and the second delayed sequences; and the first node determines a distance between the first node and the second node based on the first phase difference.

Abstract: Provided are a communication method, a terminal device and a network device. The terminal device receives configuration information sent by a network device, the configuration information being used for indicating one or more conditions for the terminal device to report random access-related information. The terminal device sends a successful handover report that does not contain the random access-related information to the network device in response to a random access of the terminal device not satisfying the one or more conditions for reporting the random access-related information.

Abstract: Systems and methods for monitoring life signs in a subject a radar unit comprising generates raw data and a processor unit receives raw data and identifies oscillating signals in a series of frames of complex values representing radiation reflected from each voxel of a target region during a given time segment. A processor may collate a series of complex values for each voxel representing reflected radiation for the associated voxel in multiple frames and generate therefrom a real signal sample for each voxel. Neural networks may be used to select the voxel with the best waveform.

Abstract: A method for mapping a surface using signals transmitted from a single transmitter comprises: receiving signals transmitted from the single transmitter, where each signal has a different propagation path; determining a motion of an antenna of the receiver; generating phasor sequences, where each phasor sequence represents a hypothesis based on antenna motion and a direction of arrival estimate for each received signal; compensating the received signals, local signals, or correlation results from correlating the received signals with the local signals using the phasor sequences based on the hypotheses to generate compensated correlation results; determining a preferred hypothesis in the hypotheses for each received signal that optimizes each correlation result; identifying a direction of arrival for each received signal using the determined hypothesis; determining a point of reflection from the direction of arrival of each received signal; and combining the points of reflection into one or more reflective surf

Abstract: Techniques are provided for mitigating interferometric angle ambiguity.