Abstract: The disclosed subject matter relates to an Intelligent Transportation System station (ITS-S) for being carried by a Vulnerable Road User (VRU), comprising: a motion sensor for determining VRU motion data indicative of a VRU position, a VRU speed, and a VRU heading; a transmitter for transmitting a VRU message including the determined VRU motion data; a receiver for receiving, concerning a vehicle, vehicle motion data indicative of a vehicle position, a vehicle speed, and a vehicle heading; and a controller for controlling the transmitter; wherein the controller is configured to compare the determined VRU motion data with the received vehicle motion data and, when the result of the comparison meets a predetermined criterion, to suppress the transmitting of said VRU message.

Abstract: A position detection method to be executed by a computer, the position detection method includes transmitting, by a sensor terminal, a signal obtained by performing capture processing on a satellite signal from a satellite of a search target according to an order of the satellites of the search targets; calculating, by a calculation device, a position of the sensor terminal based on a signal transmitted by the sensor terminal; and determining a satellite having a highest discovery probability based on a specific estimation method for second and subsequent search targets, using an index which is reflected larger as the discovery probability of other satellites is higher or lower, in a case where the first satellite is captured when a first search target is determined.

Abstract: A chip-scale gyrometric apparatus is disclosed. In embodiments, the chip-scale gyrometric apparatus includes a dielectric substrate and an antenna element attached thereto for receiving an inbound signal having an initial phase. The apparatus includes a splitter for splitting the inbound signal into two equivalent signals, and two coils connected to the splitter. The first coil carries one of the split signals in a clockwise (CW) path relative to a rotational axis, while the second coil carries the other split signal in a counterclockwise (CCW) path relative to the same axis. An integrated circuit (IC) on the substrate and connected to the first and second coils measures a phase shift between the first and second signals (e.g., deviation from the initial phase) based on their respective CW and CCW paths and determines, based on the measured phase shift, a degree of rotation relative to the common rotational axis.

Abstract: A method for controlling dielectric constant of a composite material through micro pattern printing includes setting a dielectric constant value needed in the composite material, preparing a paste having an electromagnetic loss material, fabricating a composite material sheet by forming the paste on one surface of a base member in a predetermined pattern, and fabricating the composite material sheet with the micro patterns including the electromagnetic loss material on the base member by drying the composite material sheet, wherein the base member is formed of a sheet and includes fibers.

Abstract: A method and apparatus for reducing magnetic tracking error in the position and orientation determined in an electromagnetic tracking system is disclosed. In some embodiments, a corrected position and orientation is blended with an uncorrected position and orientation based upon the calculated probability of each. To determine a corrected position and orientation, data from an IMU in the receiver is used to obtain a constraint on the orientation. In other embodiments, the amount of detected error due to electromagnetic distortion is measured. Any error is first assumed to be from “floor distortion,” and a correction is applied. If the error is still deemed too great, a constraint is again obtained from IMU data. Using this constraint, another correction for the distortion is made. The solution from this correction may be blended with a standard solution and the solution from the floor distortion to arrive at a final solution.

Abstract: A receiver is disclosed. The receiver includes one or more antennas receiving signals from a transmitter including one or more antennas, and at least one RF chain generating digital samples based on the received signals. Either A) the signals are transmitted by a single antenna of the transmitter and are received by multiple antennas of the receiver, or B) the signals are transmitted by multiple antennas of the transmitter and are received by a single antenna of the receiver. The receiver also includes a controller determining a plurality of groups of digital samples to use for calculating estimates of an AoA or AoD of the received signals, calculate estimates of AoA or AoD based on the groups of digital samples, select a subset of the estimates, and calculate a measured AoA or AoD based on the selected subset of estimates.

Abstract: A correlation and track system identifies whether a Radar warning (RW) Track contains one or more emitters by receiving a set of initial Short and Long Baseline Interferometer (SBI) (LBI) detections; receiving inertial navigational data; receiving subsequent LBI detections; determining whether the LBI detections represent one or multiple emitter(s) by designating an initial SBI conic with a multiple of its one sigma conic Direction Finding (DF) accuracy window as containing the emitter; laying down a set of grid points within the SBI conic window as possible emitters' locations; summing real and imaginary values of a residual phase in the form of a unit vector at each grid point for each LBI update; identifying whether there are one or more emitters in RW track based on whether the magnitude of a peak vector is above or below a defined threshold; and invoking geolocation algorithms based on the vector's magnitude.

Abstract: An embodiment is a semiconductor structure. The semiconductor structure includes a fin on a substrate. A gate structure is over the fin. A source/drain is in the fin proximate the gate structure. The source/drain includes a bottom layer, a supportive layer over the bottom layer, and a top layer over the supportive layer. The supportive layer has a different property than the bottom layer and the top layer, such as a different material, a different natural lattice constant, a different dopant concentration, and/or a different alloy percent content.

Abstract: A system for using thin and energy-autonomous backscatter tags and corresponding sensing nodes may operate with 24 GHz backscatter reflectarray tags having low power consumption. A digital beam steering, frequency-modulated continuous wave (FMCW) radar may be used for detection, localization, identification and communications. The tags may include environmental sensors that are used to modulate backscatter waves for data communications directed to a reader or may digitally modulate the backscatter transmissions without sensor data for independent localization of each tag in a network.

Abstract: A method includes receiving, by an electronic device, a positioning request; responding to the positioning request; determining a target time source having the highest priority in at least two time sources; providing, for a GPS chip, a target time currently corresponding to the target time source; and performing GPS positioning based on the target time.

Abstract: A direction of arrival estimation apparatus includes at least first and second sub-arrays to receive a reflected wave of a transmission waveform from a target; first and second phasing parts that perform phasing of reception signals at the first and second sub-arrays to generate first and second sub-array beams; an arrival time difference calculation part that calculates first and second correlations of the reception signals of the first and second sub-array beams at first and second time points to find an arrival time difference between times of the reflected wave arriving at the first and second sub-arrays, based on a result of a predetermined operation on the first and second correlations and a time difference between the first time point and the second time point; and a direction of arrival calculation part that finds a direction of arrival of the target based on the arrival time difference.

Abstract: A position estimation device for estimating the position of an initiator communication device comprises data obtaining circuitry configured to obtain path data of two or more paths of RF signals transmitted by a responder communication device, wherein RF signals of at least one path are reflected at a scatterer, said path data comprising, per path of an RF signal: path length information indicating the length of the propagation path of an RF signal from the responder communication device via a scatterer to the initiator communication device, angle of departure information indicating the angle of departure of an RF signal from the responder communication device, and angle of arrival information indicating the angle of arrival of an RF signal at the initiator communication device. The device further comprises processing circuitry configured to determine the position of the initiator communication device on the basis of the obtained path data.

Abstract: Two antennas receive three kinds of radio waves with different frequencies. A computation unit determines the arrival direction of the three kinds of radio waves arriving at the two antennas after propagating along two mutually different paths from a single transmit point in accordance with receive signals of the three kinds of radio waves with different frequencies received individually by the two antennas.

Abstract: A method for providing correction data for satellite navigation, includes determining the correction data using a plurality of state signals relating to the Earth's ionosphere, each of the state signals associated with one of a plurality of signals which have been received by an interface for a plurality of mobile satellite receivers, the plurality of mobile satellite receivers provided for satellite navigation. Each of the plurality of state signals identify a geographical position of an associated one of the plurality of mobile satellite receivers and an item of state information relating to the Earth's ionosphere which is determined using at least one satellite signal transmitted between at least one satellite and the associated one of the plurality of mobile satellite receivers. The correction data is transmitted to the at least one satellite and then transmitted from the at least one satellite.

Abstract: Perception data based multipath identification and correction is based on recognition that sensors such as radar, LIDAR, and cameras can generate perception data indicative of locations and properties of terrestrial objects in an environment surrounding a satellite navigation device (e.g., a GNSS receiver), which data may then be used in training, or updating, a model for determining or correcting distances to satellites to account for multipath. Multipath identification includes identifying multipaths to train the model, e.g., by using perception data to perform ray tracing. Multipath correction includes using the model to correct distance errors due to the multipaths or, equivalently, using the model to determine distances to satellites in a manner that accounts for the multipaths.

Abstract: A multi-object tracking method includes generating multi-dimensional physical characterization data associated with a plurality of objects; simplifying the multi-dimensional physical characterization data to reduce at least one dimension thereof, thereby resulting in a simplified data set; and tracking by comparing a current simplified data set and a stored data set in a database. If the current simplified data set conforms to the stored data set in the database, a proper operation is correspondingly performed; otherwise the current simplified data set is defined as a new event and stored in the database.

Abstract: Systems and methods are provided for provisioning of telecommunications signals in moving trains. Scattering panels may be utilized for redirecting wireless signals, such as by scattering them, to provide better communication performance on the moving trains. The scattering panels may be configured to scatter the signals, such as by reflecting them. The scattering panels may be configured for operation in conjunction with a number of antennas that communicate the signals being scattered via the scattering panels.

Abstract: A tag enhances vehicle radar visibility of objects by increasing the effective radar cross-section of the object, allowing detection at longer ranges and providing the vehicle/driver with more time to avoid a collision. The tag may include a receive antenna and a bandpass filter configured to receive a signal from the receive antenna and to allow a portion of the frequency range of the signal from the receive antenna through. The tag may also include an amplifier configured to receive and amplify the signal with the portion of the frequency range from the bandpass filter. The tag may further include a transmit antenna configured to transmit the amplified signal. The receive antenna, the transmit antenna, and the amplifier may be configured such that antenna-to-antenna isolation between the receive antenna and the transmit antenna is greater than a gain of the amplifier.

Abstract: Systems and methods for modulation and demodulation using a micro-Doppler effect are described. In an embodiment, the method includes radiating, using a picosecond pulse generator with an antenna, a train of THz pulses that form a frequency comb, where the frequency comb is reflected from an object such that the frequency several tones in the frequency comb are shifted based on the speed of the object and demodulating the reflected frequency comb to recover a THz Doppler signature of the object.

Abstract: This disclosure relates generally to methods and systems for real time unobtrusive monitoring of physiological signals of a subject confined to a bed. Output of single channel continuous wave (CW) radars are dependent upon distance of the subject from the radar. Dual channel IQ radars are more accurate but are costly and availability in the market is a constraint. The present disclosure provides a cheap and easily replicable pseudo IQ radar based system. The pseudo IQ radar comprises two CW radars placed at a calibrated distance from each other such that optimum points of one CW radar spatially overlaps null points of the other CW radar and phase imbalance is suppressed. Three such pseudo IQ radars are positioned in a predetermined configuration around the subject being monitored. A Supervised Complex Signal Demodulation (SCSD) method configured to suppress amplitude and DC imbalance is also provided for evaluating the physiological signals.