Abstract: An active electronically scanned array (AESA) antenna system can include a plurality of printed circuit boards (PCBs) having a common shape. Each PCB of the plurality of PCBs can include a respective sub-array of antenna elements surrounded by a passive area, and can include electronic circuitry for electrically steering the sub-array of antenna elements. The AESA antenna system can include a mechanical seal for mechanically connecting the PCBs hosting the sub-arrays to form an antenna array of the sub-arrays. The passive areas can form separation areas between adjacent ones of the sub-arrays when the PCBs are mechanically connected to each other. The sub-arrays are arranged such that the separation areas are contiguous along at most one straight direction across the antenna array.

Abstract: A Software Defined Radio Earth Atmosphere Imaging system comprising at least one imager, which comprises: a radio wave emitter configured to emit a sky wave, a ground wave and a first time signal; a radio wave detector, the radio wave detector including a two dimensional array of radio wave receivers, the radio wave detector for receiving a carrier wave and the ground wave and transmitting a second time signal; a vector network analyzer including a Global Navigation Satellite System and at least one synchronization clock, the vector network analyzer in electrical communication with the radio emitter via a first wire and with the radio wave detector via a second wire, the wires for transmitting the time signals; a software defined radio in electronic communication with the vector network analyzer; and a computing device, the computing device in electronic communication with the vector network analyzer.

Abstract: The present disclosure is effective in easily estimating an integer value bias at a high speed. A processor of a positioning system, a positioning method, and a positioning station performs interference positioning through calculation processing based on positioning data of the base station and positioning data of the positioning station. A plurality of calculation processing items are performed in parallel with different time points as start time points. Thus, even in a case where a situation in which the time required for the calculation of a fix solution differs depending on time point at which time point the calculation processing starts, there is a possibility that one of a plurality of calculation processing items can calculate the fix solution at an earlier time than in a case where single calculation processing performs the calculation. Therefore, it is possible to easily estimate the integer value bias at the high speed.

Abstract: A phased-array antenna panel has front end modules mounted on a Printed Circuit Board (PCB). Several phased-array processing die, transform phase and gain according to a register array in an RFIC on the PCB. The register array are grouped into a local register group and a global register group. Each set of local registers control an individual antenna element and a global register group controls overall RFIC function. The apparatus elaborates phase shift weights into a submodule of a phased-array antenna system. Each submodule determines its own base phase shift weight per its unique location and configuration to accelerate antenna beam direction changes.

Abstract: The present disclosure provides a method for ARAIM fault detection based on extraction of characteristic value of pseudo-range measurement, comprising: calculating a sum of integrity risks of each of fault modes and a maximum value of the integrity risks of each of the fault modes, calculating a quantity of the fault modes by using a ratio of the sum of integrity risks of each of fault modes to an integrity risk of a largest fault, and using a sample quantity of corresponding pseudo-range measurement values as an effective sample quantity; using a ratio of a time duration T to the effective sample quantity as an effective sampling duration; sampling samples of pseudo-range measurement values that are gathered by a receiver within the effective sampling duration, to obtain an effective pseudo-range measurement set; and by using the effective pseudo-range measurement set, calculating a test statistic, and performing integrity fault detection.

Abstract: A method for internal calibration of a detector comprising using one or more hardware processors for the following actions. The method comprises an action of receiving a request for internal calibration of a detector comprising a switchable termination resistor (Dicke switch) and connecting electronically one or more internal calibration circuits to the termination resistor. The method comprises an action of applying two or more input voltage signals to the detector from the calibration circuit and measuring two or more output readings from the detector, each output reading corresponding to one of the input voltage signals. The method comprises an action of computing internal calibration coefficients based on the input voltage signals and the output readings. The method comprises an action of storing the internal calibration coefficients on a non-transitory computer-readable storage medium connected to the hardware processor(s) for subsequent calibration of output values from the detector.

Abstract: Described are systems and techniques for determining a position of one or more people within a physical environment, such as an aisle in a fulfillment center. In some instances, the aisle is instrumented with a plurality of radio frequency receivers (RFRXs), active infrared transmitter-receiver pairs (AIRTRPs), and passive infrared (PIR) proximity sensors. A radio frequency-emitting tag carried by the user is detected by the RFRX to determine an identity and approximate position along the length of the aisle. Data indicating obscuration of beams from one or more of the AIRTRPs provides further refinement as to position along the length of the aisle. Data from the PIR provides disambiguation as to which side of the aisle the user is on. Accordingly, the user may be identified and precisely positioned in the aisle.

Abstract: An RF position tracking system for wirelessly tracking the three-dimensional position of a tracked object. The tracked object has at least one mobile antenna and at least one inertial sensor. The system uses a plurality of base antennas which communicate with the mobile antenna using radio signals. The tracked object also incorporates the inertial sensor to improve position stability by allowing the system to compare position data from radio signals to data provided by the inertial sensor.

Abstract: Embodiments include a method and apparatus for improving a position-velocity solution in GNSS receivers. A receiver of a mobile device includes an antenna that receives one or more signals from one or more satellites, a measurement layer produces range and range rate measurements dependent on the one or more signals, and a storage device stores historic satellite measurement states dependent on the range and range rate measurements. The receiver may further include a Kalman filter logic section may receive the range and range rate measurements, and to smooth computed motion of the mobile device. The storage device may store historic filter states. A filter adjustment logic section may detect a measurement layer error trigger, remove or de-weight errant information associated with the measurement layer error trigger, and cause the filter logic section to update a current filter state by iteratively applying the filter logic section to the historic filter states.

Abstract: The invention relates to an apparatus and method for augmenting the 3 dimensional position information obtained from the NAVSTAR satellite-based global positioning system (“GPS”) system. Such systems can be impacted by physical obstacles that prevent the receipt of the satellite signals or as a result of sun spot activity that introduces noise into the signals thus causing them to become intermittently unavailable and/or making them less accurate in the course of normal operation. Therefore, an improved positioning solution that can operate under such poor GPS operational conditions is needed. The apparatus and method of the invention augments GPS with dead reckoning techniques when GPS signals are unavailable or inaccurate. The apparatus and method of the invention demonstrates highest value when applied to blasthole drill positioning applications in open-pit mines.

Abstract: Systems and methods of using a machine learning model to detect physical characteristics of an environment based on radio signal data include at a radio signal receiver, collecting noise floor signal data comprising radio signal data from an environment within a predetermined proximity of the radio signal receiver; implementing a trained deep machine learning classifier that is trained to classify one or more physical characteristics of the environment based on the radio signal data; generating machine learning input based on the radio signal data collected by the radio signal receiver; receiving the machine learning input at the trained deep machine learning classifier; and generating by the trained deep machine learning model one or more classification labels identifying the one or more physical characteristics of the environment based on the noise floor signal data.

Abstract: The disclosure relates to a method for generating a time stamp in a vehicle which participates in a vehicle ad-hoc network. The method includes associating, by giving out the time stamp, an event, which is transmitted in a message, with a clock time. The clock time is generated by updating a global time base that may be derived from a global satellite navigation signal (GNSS). The method includes checking whether a GNSS signal may be received. The method also includes generating the clock time based on a local time base if an insufficient number of global satellite navigation signals for deriving the global time base is available.

Abstract: Vessel communications systems and methods are described. According to one aspect, a vessel communications method includes receiving a first inbound wireless communication within a subject vessel, the first inbound wireless communication comprising positional data regarding a location of a first vessel, receiving a second inbound wireless communication within the subject vessel, the second inbound wireless communication comprising positional data regarding a location of a second vessel, selecting the positional data of the first vessel but not the positional data of the second vessel and after the selecting, outputting an outbound wireless communication comprising the positional data of the first vessel but not the positional data of the second vessel.

Abstract: The subject matter disclosed herein relates to determining a background location of a mobile device using one or more signal metrics.

Abstract: A rotating unit for controlling an antenna to rotate includes an electromagnetic element and a rotating circuit. The rotating circuit is electrically coupled with the electromagnetic element. The rotating circuit controls the electromagnetic element to generate a magnetic force for controlling a rotation of the antenna.

Abstract: A method of detecting collisions between an equipped mobile object travelling around an airport installation and at least one obstacle. The method comprises the following steps. Determining the real-time positions of the equipped mobile object in a reference frame tied to the airport installation. Reading at least one item of information contained in at least one marker fixed to the equipped mobile object. Determining an outline of the equipped mobile object on the basis of the read item of information contained in the marker. Positioning the outline determined in the reference frame tied to the airport installation. Triggering an alert if the distance between the outline of the equipped mobile object and the obstacle is less than a given threshold.

Abstract: The method and apparatus for angle of arrival estimation are used for estimating the angle of arrival of a received signal by a switched beam antenna array and a single receiver. The switched beam antenna array first collects an omnidirectional signal to be used as a reference signal. A main beam thereof is then switched to scan an angular region of interest. The collected signals from the switched beams are cross-correlated with the reference signal. The cross-correlation coefficient is the highest at the true angle of arrival and relatively negligible otherwise. The collected signal from each beam angle is cross-correlated with the omnidirectional reference signal to determine the angle of arrival of the received signal.

Abstract: A boom attitude detection device is equipped with: a GPS device that measures the position of the leading end of the boom; attitude detectors and that detect the attitude of the boom; and a calculation device. If the positioning reliability of the GPS device is high, the calculation device determines a correction value for correcting detection values of the attitude detectors to the attitude of the boom determined from the positioning value of the GPS device. If the positioning reliability of the GPS device is low, the calculation device corrects the detection values of the attitude detectors using correction values and determines the attitude of the boom.

Abstract: Some demonstrative embodiments include apparatuses, devices, systems and methods of a Global Navigation Satellite System (GNSS) measurement.

Abstract: A portable information handling system rotationally couples main and lid housing portions to each other with a hinge having opposing faces. One of a first or second antenna set disposed on the opposing faces is selected to support wireless communication by a radio disposed in the housing based upon the rotational orientation of the hinge. Optimal antenna selection is confirmed by comparing return signal strength indicator or bit rate error of the first and second antenna sets.