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: 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 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: 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 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: 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 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: 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.

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: Systems and methods for angle of arrival determination in wireless devices include one or more processors which determine a first angle of arrival (AoA) and a first distance between a user device and an anchor device at a first time instance, according to first measurements between a single ultra-wideband (UWB) antenna of the user device and a plurality of UWB antennas of the anchor device. The processor(s) may determine a second AoA and a second distance between the user device and the anchor device at a second time instance, according to second measurements between the single UWB antenna of the user device and the plurality of UWB antennas of the anchor device. The processor(s) may determine a direction of movement of the user device relative to the anchor device, according to the first AoA, the first distance, the second AoA, and the second distance.

Abstract: Common view time transfer and related apparatuses and methods are disclosed. An apparatus includes a receiver oscillator to provide a local clock signal and one or more processors. The one or more processors are to perform, at least partially based on the local clock signal, event time tagging pre-processing at least partially responsive to satellite signals received from one or more satellites to generate a decimated precision correction state estimate; determine, per satellite signal pseudo range residuals; determine a navigation engine clock state; perform a precision clock state pre-processing operation at least partially responsive to the navigation engine clock state and the decimated precision correction state estimate to generate a precision navigation clock state; and generate a common view real time report at least partially responsive to the per satellite signal pseudo range residuals and the precision navigation clock state.

Abstract: According to various, but not necessarily all, embodiments there is provided an apparatus comprising means for: obtaining a position of a user device; locating one or more surfaces providing one or more putative reflection points for a non-line-of-sight (NLOS) path between the user device and a wearable device; conditional upon locating the one or more surfaces, causing ranging signals to be exchanged between the user device and the wearable device to determine a relative position of the wearable device with respect to the user device; determining, from at least the relative position and position of the user device, data that enables calibration of one or more sensors of the wearable device; and causing transmission of the data to the wearable device.

Abstract: A method for classifying radar data, which have been obtained by registering radar radiation emitted from a transmitter and reflected by at least one object using at least one detector. The method includes: providing radar data, which include observations of a setting recorded at different points in time; ascertaining at least one portion of the radar data, which is rotated and/or scaled in at least one of the observations as compared to at least one other of the observations; ascertaining a fixed point of the rotation and/or scaling; transforming at least one two-dimensional representation of at least one part of the observations into logarithmic polar coordinates using the ascertained fixed point as the origin; and mapping the at least one transformed two-dimensional representation onto at least one class of a predefined classification via at least one classifier, which encompasses a neural network that includes at least one convolution layer.

Abstract: The disclosure herein provides a smart golf pin system and golf GPS device with a mechanism to automatically receive golf hole cup information and display the golf hole information on the golf GPS device. More specifically, the golf GPS device receives data from a plurality of GPS modules installed on the golf pins located throughout the golf course and based on its current location, selects a set of GPS coordinates corresponding to the current hole that the golfer is playing, and displays a distance from the golf GPS device to the actual hole cup location in the current hole, thereby allowing the golfer to fine tune his or her approach accordingly.

Abstract: A graphical near-field identification method and apparatus are provided. The method includes filtering a searched beacon signal according to a preset filtration condition. The method further includes matching a filtered beacon with beacons in all beacon graphs to obtain a beacon graph having a largest beacon matching number and the number of beacons matched with the beacon graph. The method further includes determining whether the number of the beacons matched with the beacon graph is less than a beacon determination minimum number requirement. The method further includes determining whether the number of the beacons matched with the beacon graph meets a beacon graph benchmark number condition. The method further includes determining that an object position is in a scenario where the beacon graph is located. The method further includes estimating a distance to the beacon by using a RSSI value of the beacon signal.

Abstract: The present invention is to perform position estimation in relation to a vehicle and a key module by using an ultra-wideband (UWB) and, specifically, relates to a method and system for precise position estimation for a vehicle, whereby position can be estimated, with effects minimized that result from the type of the vehicle and the quality of exterior metal of the vehicle.

Abstract: Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) receives, from a serving cell operating on a first frequency, an inter-frequency communication gap configuration specifying at least one period of time during which the UE is permitted to tune from the first frequency to a second frequency to perform a positioning operation, wherein one or more neighboring cells of the serving cell are operating on the second frequency, tunes from the first frequency to the second frequency at a start of the at least one period of time, and performs, during the at least one period of time, the positioning operation on the second frequency.

Abstract: Sets of digital samples associated with received wireless signals are received, each of the sets of digital samples corresponding to a particular RF path. The sets of digital samples are provided to a plurality of pipelines, each of the plurality of pipelines including a plurality of stages, each of the plurality of stages including one or more digital logic circuits. Sets of interconnect data are generated by the plurality of pipelines based on the sets of digital samples, the sets of interconnect data including at least one accumulating value. The sets of interconnect data are passed between adjacent pipelines of the plurality of pipelines along a direction. A result is generated by a last pipeline of the plurality of pipelines based on the at least one accumulating value.

Abstract: Systems, methods, and devices for establishing a confidence level for local operational data for a device within a technological ecosystem, such as the V2X ecosystem. The systems, methods, and devices may perform operations that include: obtaining local operational data for the device; obtaining messages from multiple external devices participating in the ecosystem, wherein each of the messages includes external operational data for the transmitting external device; determining, based on the local operational data and the external operational data from the messages, a confidence level for the local operational data; and executing a remedial action when the confidence level falls below a threshold for the confidence level. The systems and devices may include a local data source that stores the local operational data and a communication interface.