Patents Examined by Gregory C. Issing
  • Patent number: 10283834
    Abstract: The present invention is directed to methods and apparatuses for beamforming signals or compute beamformed signals. The present approach is to determine a series of beams from or for a set of devices configured for receiving signals from and/or transmitting signals to one or more regions of interest in an n-dimensional space, with n=2 or 3. Each of the devices has a known position pi within said n-dimensional space. Signals are to be respectively transmitted or received non-uniformly in this space, i.e., according to the particular regions of interest. During a first phase, operations are performed in order to successively obtain a spatial filter function {circumflex over (?)}(r), a beamforming function ?(p), and beamforming weights ?(pi). The spatial filter function {circumflex over (?)}(r) matches projections of the regions of interest onto an n?1-dimensional sphere centered on said set of devices.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: May 7, 2019
    Assignee: International Business Machines Corporation
    Inventors: Giovanni Cherubini, Paul Hurley, Matthieu Simeoni
  • Patent number: 10263331
    Abstract: Techniques and mechanisms to transmit signals with an antenna array. In an embodiment, a first signal is received at a first input of the first antenna while a second signal is received at a second input of the second antenna. A difference in phase differentials—the phase differentials each between the first signal and the second signal—results from propagation of the first signal and the second signal in the antenna array and from a difference between respective configurations of the first antenna and the second antenna. Each of the first antenna and the second antenna has respective emitters distributed along the length thereof. In another embodiment, the first antenna and the second antenna have different respective dielectric structures or different respective distributions of emitters.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: April 16, 2019
    Inventors: Nathan Kundtz, Bruce Rothaar
  • Patent number: 10254411
    Abstract: A ground-based source of a jamming signal capable of disrupting a GNSS satellite-based navigation system, for example a GPS jammer, is located with a detector carried by a suitable platform, for example an airborne UAV or missile. The detector, when the platform is at a first location, measures a characteristic of the jamming signal. The platform and its detector are then moved to a chosen second location, from which a further measurement of the jamming signal is made. The measurements made by the detector are then used to determine the location of the source of the jamming signal.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: April 9, 2019
    Assignee: MBDA UK LIMITED
    Inventors: Colin Aaron Littlefield, Timothy Whitworth, Yeqiu Ying, Graham Patrick Wallis, Mark Dumville
  • Patent number: 10243276
    Abstract: A phased array antenna system includes a plurality of radio frequency (RF) tile sub-arrays. Each RF tile sub-array includes a multiplicity of RF elements, a tile control integrated circuit, a multiplicity of RF integrated circuits and a configuration storage device. The configuration storage device stores data including calibration and configuration information that is unique to the RF tile sub-array and the tile control integrated circuit. The multiplicity of RF integrated circuits, the multiplicity of RF elements, and the configuration storage device are disposed on a single associated RF tile sub-array. The system also includes an antenna controller configured to process data for steering or tracking one or more RF beams by the multiplicity of RF elements. The calibration and configuration information that is unique to the RF tile sub-array is downloaded from the configuration storage device through the tile control integrated circuit to an RF element compensation table.
    Type: Grant
    Filed: October 12, 2015
    Date of Patent: March 26, 2019
    Assignee: The Boeing Company
    Inventors: Robert G. Ford, Frank R. Brogden, Jay W. Clement, Rodney K. Bonebright
  • Patent number: 10241214
    Abstract: A method for applying GPS UAV attitude estimation to accelerate computer vision. The UAV has a plurality of GPS receivers mounted at fixed locations on the UAV. The method includes receiving raw GPS measurements from each GPS satellite in view of the UAV, the raw GPS measurements comprising pseudo-range and carrier phase data representing the distance between each GPS receiver and each GPS satellite. Carrier phase and pseudo-range measurements are determined for each GPS receiver based on the pseudo-range and carrier phase data. The GPS carrier phase and pseudo-range measurements are compared pair-wise for each pair of GPS receiver and satellite. An attitude of the UAV is determined based on the relative distance measurements. A 3D camera pose rotation matrix is determined based on the attitude of the UAV. Computer vision image search computations are performed for analyzing the image data received from the UAV in real time using the 3D camera pose rotation matrix.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: March 26, 2019
    Assignee: International Business Machines Corporation
    Inventors: Mahanth K. Gowda, Justin G. Manweiler, Justin D. Weisz
  • Patent number: 10241212
    Abstract: A method for receiving and processing satellite navigation signals includes receiving the navigation signals; converting the navigation signals into digital signals; providing a clock signal to all channels that process the digital signals; generating frequency division signals; selecting a channel frequency division signal from the frequency division signals based on which ADC is used to convert the satellite navigation signals into digital signals; connecting the channel to the ADC; generating code frequency signal and base carrier frequency signal using a net accumulation signal; processing the digital signal in the channel to produce digital quadrature signal components of the digital signal based on the code frequency signal and the base carrier frequency signal; using a tick signal that represents 2N×clock signal as a temporary time scale for control of the channels for determining digital signal phase differences between the channels; and outputting coordinates based on the quadrature components.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: March 26, 2019
    Assignee: Topcon Positioning Systems, Inc.
    Inventors: Dmitry Anatolyevich Rubtsov, Andrey Vladimirovich Veitsel, Igor Anatolyevich Orlovsky
  • Patent number: 10222479
    Abstract: GNSS receivers and methods of determining a current receiver state of a GNSS receiver are provided. The method includes receiving positioning signals from a plurality of satellites; generating a plurality of correlation grids from the received positioning signals, where each correlation grid is associated with a respective one of the plurality of satellites; estimating a probability distribution of the current receiver state from the plurality of correlation grids; and determining a maximum likelihood estimate of the current receiver state from the estimated probability distribution.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: March 5, 2019
    Inventors: Murray Robert Jarvis, James Burgess Tidd
  • Patent number: 10215836
    Abstract: A geolocation system on a platform, for example, an airplane, to identify a location of a signal emitting site includes an inertial navigation system and an array of signal detectors. A first subset of the detectors is on a flexing portion of the platform and a second subset of detectors is on a rigid portion of the platform. An inertial measurement unit is disposed adjacent to each of the detectors on the flexing portion. A locator module is configured to: calculate a respective velocity and a respective position of each one of the detectors positioned on the flexing portion as a function of respective inertial measurement data; and determine a position of the emitter as a function of the calculated velocity, calculated position, inertial navigation data, the detected signal data and data defining a flexure relationship between the flexing and rigid portions of the platform.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: February 26, 2019
    Assignee: Raytheon Company
    Inventors: Albert Yoon, Phuoc T. Ho, Stanley I. Tsunoda
  • Patent number: 10203417
    Abstract: A method and a receiver apparatus allows obtaining accurate estimates of motion parameters of a mobile receiver, including smoothed estimates of total coordinates increments relative to its initial position, projections of velocity vector and acceleration vector. High estimation accuracy is achieved by filtering the biased or unbiased estimates of total coordinate increments relative to the receiver's initial position using smoothing tracking filters of a 2-nd or 3-rd order.
    Type: Grant
    Filed: January 25, 2016
    Date of Patent: February 12, 2019
    Assignee: Topcon Positioning Systems, Inc.
    Inventors: Mark Isaakovich Zhodzishsky, Victor Andreevich Prasolov, Dmitry Markovich Zhodzishsky, Dmitry Pavlovich Nikitin
  • Patent number: 10197679
    Abstract: An antenna system includes an electromagnetic radiator assembled on a ground plane. The ground plane containing a nontransparent area in a center of the ground plane and a semitransparent area surrounding the nontransparent area. The nontransparent area is circular in shape. The semitransparent area is generally circular in shape and contains at least one slot. A plurality of vertical conducting elements are in proximity of a boundary between the nontransparent area and the semitransparent area on a bottom side of the ground plane. The vertical conducting elements are arranged in a circle around a center of the electromagnetic radiator.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: February 5, 2019
    Assignee: Topcon Positioning Systems, Inc.
    Inventors: Andrey Vitalievich Astakhov, Dmitry Vitalievich Tatarnikov, Pavel Petrovich Shamatulsky, Anton Pavlovich Stepanenko
  • Patent number: 10191157
    Abstract: A wide-lane ambiguity and a respective satellite wide-lane bias are determined for the collected phase measurements for each satellite for assistance in narrow-lane ambiguity resolution. Satellite correction data is determined for each satellite in an orbit solution based on the collected raw phase and code measurements and determined orbital narrow-lane ambiguity and respective orbital satellite narrow-lane bias. A slow satellite clock correction is determined based on the satellite orbital correction data, the collected raw phase and code measurements, and clock narrow-lane ambiguity and respective satellite narrow-lane bias.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: January 29, 2019
    Assignee: DEERE & COMPANY
    Inventors: Liwen L. Dai, Sonia U. Kuntz, Yujie Zhang, Yiqun Chen
  • Patent number: 10191158
    Abstract: A receiver, and associated process, for tracking a GNSS positioning signal comprising a carrier modulated by a subcarrier and a spreading code, the receiver comprising: at least one tracking loop configured to calculate a first pseudo range from said GNSS positioning signal, a first discrimination circuit (521) configured to calculate an ambiguous discriminator value from the subcarrier and the spreading code of said GNSS positioning signal, a calculation circuit (522) configured to calculate a value representative of a tracking error of said tracking loop, a second discrimination circuit (530) configured to select one of said ambiguous discriminator value and said value calculated by the calculation circuit, and to generate a first non-ambiguous discriminator value, an amplitude of which is based on an amplitude of the selected value, and a sign of which is a sign of said value calculated by the calculation circuit.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: January 29, 2019
    Inventors: Nabil Jardak, Willy Vigneau, François-Xavier Marmet, Lionel Ries
  • Patent number: 10170834
    Abstract: A phased array transmitter includes a plurality of vector modulators, an in-phase/quadrature (I/Q) signal generator, and a multiphase generator. The output phases of the plurality of vector modulators, and hence the direction of transmission of the phased array transmitter, are set and controlled by adjusting both the magnitude ratios of I/Q signal pairs generated by the I/Q signal generator and applied to I and Q inputs of the plurality of vector modulators and phases of a plurality of local oscillator (LO) signal phases generated by the multiphase generator and applied to LO inputs of the plurality of vector modulators.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: January 1, 2019
    Inventor: Earl W. McCune, Jr.
  • Patent number: 10153552
    Abstract: An antenna includes a magnetic current element which is an element to constitute a loop and generates a magnetic current vector having a component perpendicular to a loop plane, and an electric current element to generate an electric current vector having a component parallel to the magnetic current vector.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: December 11, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Masayuki Ikeda, Tadashi Aizawa
  • Patent number: 10145958
    Abstract: The wireless communication device includes a wireless communication transceiver to generate an oscillator control signal and an activation signal, a positioning-system receiver (e.g. a GPS receiver) to process received positioning signals, and a shared oscillator (e.g. a temperature compensated and voltage controlled crystal oscillator TCVCXO) responsive to the oscillator control signal and to generate a reference frequency signal for the wireless communication transceiver and the positioning-system receiver. The positioning-system receiver may control processing of the received positioning signals based upon the activation signal to reduce a noise contribution (e.g. phase noise) due to frequency control of the shared oscillator based upon the oscillator control signal. The activation signal may indicate that the oscillator control signal is being varied to provide frequency control or adjustment of the shared oscillator.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: December 4, 2018
    Assignee: BlackBerry Limited
    Inventor: Xin Jin
  • Patent number: 10132933
    Abstract: A method for aligning visual-inertial odometry (VIO) and satellite positioning system (SPS) reference frames includes obtaining a plurality of range-rate measurements of a mobile platform from an SPS. The range-rate measurements are with respect to a global reference frame of the SPS. The method also includes obtaining a plurality of VIO velocity measurements of the mobile platform from a VIO system. The VIO velocity measurements are with respect to a local reference frame of the VIO system. At least one orientation parameter is then determined to align the local reference frame with the global reference frame based on the range-rate measurements and the VIO velocity measurements.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: November 20, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Venkatesan Nallampatti Ekambaram, Jubin Jose, Urs Niesen, Xinzhou Wu, Lionel Jacques Garin
  • Patent number: 10135150
    Abstract: A beamformer comprises a transmission line fed by at least one input feed source, the transmission line comprising two stacked metal plates extending, along two directions, longitudinal X and transverse Y. The transmission line further comprises at least one protuberance extending in the directions X, Y, and in a direction Z orthogonal to the plane XY, the protuberance comprising a metal insert extending in the directions X and Y and extending height-wise in the direction Z, the insert comprising a base fastened to one of the two metal plates and a free end and having a contour of variable length between the two lateral edges of the transmission line. In the protuberance, the transmission line is adjoining the insert and forms, in the direction Z, a circumvolution around the insert.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: November 20, 2018
    Inventors: Hervé Legay, Ségolène Tubau, Jean-Philippe Fraysse, Etienne Girard, Mauro Ettorre, Ronan Sauleau, Nelson Fonseca
  • Patent number: 10126429
    Abstract: A satellite-based positioning receiver is provided that is configured to combine non-concurrent sets of pseudoranges all taken at a common location to determine at least a 2D position of the common location.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 13, 2018
    Inventors: Farrokh Farrokhi, Edmund Gregory Lee, Dickson Wong
  • Patent number: 10101463
    Abstract: A correlation processing method includes generating a correlation code in which a code value of a chip boundary period is set to a value of a replica code, and a code value of a chip center period other than the chip boundary period is set to a predetermined value, and performing a correlation calculation with respect to the correlation code and a received code signal obtained by demodulating a received signal from a positioning satellite.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: October 16, 2018
    Assignee: Seiko Epson Corporation
    Inventor: Hiroki Yoshioka
  • Patent number: 10097252
    Abstract: A method and apparatus for beamforming in a wireless communication system are provided. The method of supporting beamforming in a wireless communication device includes detecting a direction change of the wireless communication device while communicating with a peer device. The method of supporting beamforming in a wireless communication device also includes adjusting a beam direction for communication with the peer device based on information indicating a direction change of the wireless communication device.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: October 9, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ohyun Jo, Jae-Hwa Kim, Sang-Hyun Chang, Chang-Yeul Kwon, Dong-Hwi Roh, Ji-Sung Oh