Abstract: A method generates a dynamic tracking beam from an N-element receiving phased array antenna with a digital-beam-forming (DBF) network, N being an integer greater than 100, by performing digital beam forming to capture a desired signal from a moving source via the N-element phased array, including digitally multiplying received signals in the N-elements by a tracking beam beam weight vector (BWV) for the tracking beam, wherein the tracking beam BMV comprises N I/Q components; reading M pre-stored spot beam BWVs for M contiguous spot beams from a memory; determining a new tracking beam BWV for the tracking beam in a next update, wherein the new tracking beam BWV is a weighted sum of the M pre-stored spot beam BWVs of the M contiguous spot beams; and loading the new tracking beam BWV to a buffer.

Abstract: Provided is a vehicle sensor mounting structure by which a GNSS antenna and at least one external sensor are mounted on a roof of a vehicle, the at least one external sensor being configured to detect an external state of the vehicle. The vehicle sensor mounting structure includes: a first wiring hole into which a sensor wiring line of the at least one external sensor is drawn to be placed under the roof, the first wiring hole being formed in the roof; and a second wiring hole into which an antenna wiring line of the GNSS antenna is drawn to be placed under the roof, the second wiring hole being formed in the roof.

Abstract: According to one embodiment, an electronic apparatus includes a processor configured to estimate positions of wireless devices communicating each other from a plurality of position candidates based on position candidate information indicating the position candidates of the wireless devices and communication information between the plurality of wireless devices located in any of the plurality of position candidates, and determine a first position among the position candidates according to a likelihood of the wireless devices estimated to be located in the position candidates.

Abstract: The present invention relates to a novel lens antenna with a 3D near-field focus-steering capability that operates at gigahertz and terahertz frequencies. The novel antenna includes a pair of discrete dielectric lenses fed by a stationary horn source. In-plane synchronous counter-rotation and co-rotation of the lens pair steers its near-field focus radially and azimuthally, respectively, while linear translation of the upper lens moves the focal point longitudinally. The steering focus beam enables fast imaging. In imaging applications, the radiated beam from the novel lens antenna focused in the target area can reduce undesired interference from neighboring structures and increase the system dynamic range and signal-to-noise ratio.

Abstract: A global positioning system (GPS) receiver may include an antenna configured to receive GPS signals from GPS satellites, a radio frequency (RF) front end configured to pre-process signals received by the antenna, a demodulator/converter configured to perform demodulation and analog-to-digital conversion of output signals received from the RF front end, a clock configured to provide a consistent clock signal, and a digital signal processor configured to receive the clock signal and make time and code measurements associated with determining a location of the GPS receiver based on the signals received by the antenna. The GPS receiver may be configured to eliminate reflected or indirect signals from the time and code measurements.

Abstract: A vehicle is provided that includes a vehicle body, a plurality of RF signal receivers located at a plurality of locations within the vehicle, a portable pet bowl configured to be transported in the vehicle body, the pet bowl including a container for holding content such as water, an RF signal transmitter located on the pet bowl for transmitting an RF signal, and a controller for processing the RF signal received by each of the plurality of RF signal receivers and determining a location of the pet bowl based on the received RF signals.

Abstract: Methods, apparatuses, and systems for verifying alignment of a compact antenna test range (CATR) are presented. A radio frequency (RF) profile may be generated based on test signals received by a reference antenna at a plurality of orientations. Phase and amplitude data of the RF profile may be used to determine whether the CATR is aligned properly.

Abstract: A method for ascertaining output data of a global navigation satellite system (GNSS) locating device based on GNSS satellite signals in a vehicle, includes a) receiving surroundings data from the surroundings of the vehicle, b) generating a surroundings model to describe the surroundings of the vehicle using the surroundings data received in step a), c) receiving GNSS satellite signals from GNSS satellites using a GNSS receiver, and d) ascertaining output data of the GNSS locating device from the GNSS satellite signals received in step a). The surroundings model generated in step b) is used to compensate for anomalies caused by the surroundings of the propagation of the GNSS satellite signals from the GNSS satellites to the GNSS receiver.

Abstract: A method for determining the distance between an authentication device carried by a user and a motor vehicle, each including a wireless communication module so as to exchange a data frame, the data frame being modulated by changing the phase of a reference signal. The method includes the following steps of: the vehicle receiving a modulated reference signal, sent by the device, demodulating the received signal in order to extract an in-phase component and a quadrature component therefrom, computing the power value of the signal on the basis of the maximum amplitude value of the in-phase component and of the maximum amplitude value of the quadrature component, and determining the distance between the device and the vehicle on the basis of the computed power value.

Abstract: A method for generating a data packet for transmission over a first short-range communication channel using a first short-range communication technology is provided. The method comprises receiving a location data from a Global Navigation Satellite Systems (GNSS) port; by the GNSS receiver, simultaneously receiving a measurement data through a second short-range communication channel using a second short-range communication technology from an external measurement device; generating a data packet comprising, concurrently, the location data and the measurement data; and transmitting the data packet over the first short-range communication channel via a computer-compatible port to an electronic device paired to the GNSS receiver using the first short-range communication technology. An apparatus for determining a location of a measurement spot and a system for communication of geolocation of a measurement data are also provided.

Abstract: A measuring circuit is provided including a reception strength acquisition unit (114) that acquires reception strengths of received signals received from respective transmitting stations by an antenna (102) having a predetermined directivity; a direction component information acquisition unit (112) that acquires azimuth angle information and elevation angle information, obtained from each of the received signals with respect to a position of the antenna (102) used as a reference, of the each of the transmitting stations; a pattern generation unit (120) that maps a three-dimensional vector of the azimuth angle information, the elevation angle information, and the reception strength of each of the received signals to a virtual three-dimensional space with the antenna (102) being an origin to generate a first reception strength pattern; and a comparison unit (128) that compares the generated first reception strength pattern with a second reception strength pattern that is a known reception strength pattern to ac

Abstract: A method of tracking wearable sensors attached to respective body parts of a user includes acquiring multiple yaw measurements from a wearable sensor by measurement circuitry within the wearable sensor, calculating errors in the yaw measurements based on comparisons of the yaw measurements with one or more yaw references, and correcting the yaw measurements by removing the errors.

Abstract: A system or method for generating GNSS corrections can include receiving satellite observations associated with a set of satellites at a reference station, determining atmospheric corrections valid within a geographical area; wherein geographical areas associated with different atmospheric corrections can be overlapping, and wherein the atmospheric corrections can be provided to a GNSS receiver when the locality of the GNSS receiver is within a transmission region of the geographical area.

Abstract: It is provided of a system capable of estimating a current position of a terminal apparatus, even if a terminal apparatus for mobile communication is in a condition of non-receiving or inability to receive GNSS signals. A radio relay apparatus, in which a relay station mounted on a drone, transmits radio waves from a directional antenna toward the ground while flying in an upper airspace above a target area on the ground, and transmits position information on its own apparatus obtained based on the GNSS signal, to an information processing apparatus. The terminal apparatus measures a reception power or a reception quality of radio waves transmitted from the radio relay apparatus, and transmits reception measurement information regarding the measurement result of the reception power or the reception quality, to the information processing apparatus.

Abstract: A tunable narrow-linewidth photo-generated microwave source based on polarization control includes a high-reflectivity fiber grating, a high-gain fiber, a low-reflectivity polarization-maintaining fiber grating, a stress adjusting device, a single-mode semiconductor pump laser, an optical wavelength division multiplexer, a polarization beam splitter, a polarization controller, an optical coupler, and a photoelectric detector. Birefringence distribution in the low-reflectivity polarization-maintaining fiber grating is controlled by adjusting a stress magnitude of the stress adjusting device to the low-reflectivity polarization fiber grating, thereby controlling a laser frequency working in different polarization modes in a resonant cavity, and a tunable narrow-linewidth photo-generated microwave source is generated by a beat-frequency technology using a dual-wavelength narrow-linewidth laser with variable frequency intervals.

Abstract: A navigation system includes: a communication circuit configured to: receive a base station data including an actual location and a satellite provided reference location from a base station, and transfer the base station data to an artificial intelligence (AI) correction calculator, already trained; a control circuit, coupled to the communication circuit, configured to: transfer a pseudorange, of a satellite, from the AI correction calculator; calculate a real-time kinematics (RTK) correction based on the pseudorange; and enable the communication circuit to transmit the RTK correction by an over the air (OTA) communication to the base station including the base station transferring the RTK correction to a device for correcting the satellite provided reference location to a real-world location and displaying on the device.

Abstract: A system for estimating a receiver position with high integrity can include a reference station observation monitor configured to: receive a set of reference station observations associated with a set of reference stations, detect a predetermined event, and mitigate an effect of the predetermined event; a modeling engine configured to generate corrections; a reliability engine configured to validate the corrections; an observation monitor configured to: receive a set of satellite observations from a set of global navigation satellites corresponding to at least one satellite constellation; detect a predetermined event; and mitigate an effect of the predetermined event; a carrier phase determination module configured to determine a carrier phase ambiguity of the set of satellite observations; and a position filter configured to estimate a position of the receiver.

Abstract: An apparatus and method is provided to correlate radiation beams, such as RF beams, optical beams, and/or acoustic beams. A plurality of sensors are distributed according to a first pattern and disposed adjacent to a first interference region. The plurality of sensors may capture incoming radiation and convert the incoming radiation to a plurality of signals. A plurality of radiating elements are distributed according to a second pattern that differs from the first pattern and are disposed adjacent to a second interference region. A plurality of channels are connected between the sensors and the radiating elements, each channel connecting a corresponding sensor to receive a corresponding signal. Each of the radiating elements is in communication with a corresponding one of the plurality of channels to provide an outgoing radiation corresponding to the signal received by the channel.

Abstract: Provided is a face-to-face situation determination system in which a first beacon, which is a beacon carried by a first user, transmits a first signal including information identifying the first beacon. A second beacon, which is a beacon carried by a second user, upon receiving the first signal from the first beacon, transmits, toward a control device, a second signal including information identifying the first beacon, a first signal reception intensity, and information identifying the second beacon. The control device receives the second signal and, on the basis of the first signal reception strength included in the second signal, determines that the first user and the second user are facing each other if the first signal reception strength is greater than or equal to a first threshold value for a predetermined period or longer, and determines that the first user and the second user are facing one direction.

Abstract: A system and method are provided for delivering orbit and clock corrections for Global Navigation Satellite Systems (GNSS) having: (1) reduced orbit and clock discontinuities when changes in ephemeris message from a satellite occur; (2) reduced quantization error by quantifying quantization error by fitting data within the constraints of the output message to prevent broadcast of large errors; and (3) reduced potential errors caused by old but active data.