Patents Examined by Fred H. Mull
  • Patent number: 9519064
    Abstract: In order to enable a geopositioning receiver of a user to resolve phase ambiguities without necessarily using multi-frequency observations, assistance data is developed thanks to measurements made at a reference network (10, 12, 14) and sent to the receiver of the user. The assistance data used preferably consist of transmitter clock values associated with the carrier code sliding combination (?eme) or with data sufficient for reconstructing said values. The transmitter clock values associated with the carrier code sliding combination (?eme) can be reconstructed from iono-free transmitter clock values (heme) and clock biases (C?eme), for example.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: December 13, 2016
    Inventors: Denis Laurichesse, Flavien Mercier
  • Patent number: 9519065
    Abstract: A method for determining geolocation of a mobile device, and a system for performing the method. The mobile device includes a location component, a local positioning component, and a reference positioning component. The method includes determining a local-positioning period based on an identified factor, and obtaining a location fix for the device from the reference positioning component. The method further includes commencing the period and measuring movement using the location component. The method also includes determining a present location of the device, using the location component, based on the location fix and the movement data and, during the period, repeating the measuring and determining steps. The method further includes, after the period expires, updating the location fix with a new location fix from the reference positioning component, resetting the local-positioning period; and repeating the steps for determining location during the reset period using the new location fix.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: December 13, 2016
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Paul Henry, Christopher Rice
  • Patent number: 9519043
    Abstract: Systems and techniques for determining the accuracy of network based user equipment (UE) locating methods and results thereof are disclosed. Periodic direct measurements of location error for a network based location result are determined by the difference in the network based location result and an assisted global positioning system (AGPS) location result. The location error is associated with a cell-pair contributing to data employed to determine the network based location result. The error associated with the cell-pair is then applied as a measure of accuracy in future network based location results that also employ data associated with the cell-pair to determine the future network based location result.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: December 13, 2016
    Assignee: AT&T MOBILITY II LLC
    Inventors: Jeremy Fix, Mario Kosseifi, Sheldon Meredith
  • Patent number: 9459344
    Abstract: There may be situations in which a ship at sea is lost and GPS is not available due to jamming, and neither a position fix nor GPS is available. A system and method allow estimation of ship position (SPOS) using only single radar range measurements and satellite ephemeris data. The same radar can determine ship velocity using radar range rate information.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: October 4, 2016
    Inventors: Jack Gray, Jonathan A. Boardman
  • Patent number: 9429660
    Abstract: System and method for determining the roll rate and roll angle of a spinning platform. The IQ amplitude and/or phase characteristics of GPS signals received at a single receiver antenna are measured using the signals output directly by a correlator that is driven at the satellite tracking frequency used for forming the navigation solution. The roll rate and roll angle are determined in real time by a Roll filter, which is preferably an Extended Kalman Filter (EKF) employing probabilistic data association, whose inputs include the measured IQ characteristics and the navigation solution. Data from non-GPS measurement sources is optionally provided to update the navigation and/or roll solution.
    Type: Grant
    Filed: January 3, 2012
    Date of Patent: August 30, 2016
    Assignee: Mayflower Communications Company, Inc.
    Inventors: Jianhui Luo, Wallace E. Vander Velde, Huan-Wan Tseng, Triveni N. Upadhyay
  • Patent number: 9417327
    Abstract: A selection method of satellites for RTK positioning calculation includes initializing a mask threshold of the elevation angle mask and/or the signal strength mask, setting the mask threshold as a first mask threshold other than a mask threshold which carried out an initial setting, performing a first RTK positioning calculation based on a signal from the satellite, performing a first quality check about a positioning solution in the first RTK positioning calculation, and when the first quality check is under the threshold of the ratio test, performing a second RTK positioning calculation based on the signal from the satellite newly chosen via the first mask threshold and performing a second quality check about a second positioning solution in the second RTK positioning calculation.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: August 16, 2016
    Inventor: Hideki Yamada
  • Patent number: 9391366
    Abstract: The invention relates to a method for calibrating an antenna of a receiver of signals (s1, . . . , sN) originating from a plurality of sources, said receiver comprising a plurality of sensors (c1, . . . , cM), characterized in that it comprises the following steps: measurement of a phase shift (dm,n measure) for each of the sensors (c1, . . . , cM) on each of the signals (s1, . . . , sN), determination of at least one attitude value of the antenna, said attitude being defined by a set of coordinates, calculation, for each of the sensors on each of the signals, of a theoretical phase shift (dm,n theoretical) as a function of the attitude of the antenna, from the directions of arrival of the signals, calculation of a bias (?1 sensor m) for each of the sensors from the measured phase shifts (dm,n measure) and from the theoretical phase shifts (dm,n theoretical) of the sensor.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: July 12, 2016
    Assignee: Thales
    Inventors: Nicolas Martin, Jean-Michel Perre, Vincent Chopard
  • Patent number: 9360547
    Abstract: An ultra wideband (UWB) or short-pulse RF system is disclosed that can be used to precisely locate or track objects (such as personnel, equipment, assets, etc.) in real-time in an arbitrarily large, physically connected or disconnected, multipath and/or noisy environment. A system implementation includes multiple zones or groups of receivers that receives RF signals transmitted by one or more timing reference tags and one or more objects having associated object tags. Each zone or group may share a common receiver. By combining a multiple reference tag system with a virtual group of receivers, i.e., a zoning technique or system, a cost-effective system can be provided that offers scalability and flexibility to monitor a significantly expanded coverage area.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: June 7, 2016
    Assignee: ZIH CORP.
    Inventors: Aitan Ameti, Keming Chen, Robert J. Fontana, Edward A. Richley, Belinda Turner
  • Patent number: 9354320
    Abstract: A method of determining adequacy of acquisition includes: attempting to acquire a satellite signal from a satellite and decoding first satellite orbit data; and determining the adequacy of acquisition of the satellite signal by using the first satellite orbit data and second satellite orbit data that has been acquired from the satellite.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: May 31, 2016
    Assignee: Seiko Epson Corporation
    Inventors: Hideo Sasahara, Mikio Nagahara
  • Patent number: 9354323
    Abstract: To reduce power consumption in a user terminal, especially mobile devices, a system and method are introduced that use terrestrial beacons as a location proxy when satellite positioning signals are not available. The geographic locations of the terrestrial beacons need not be known to use the beacons as a proxy for a satellite positioning signals derived location.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: May 31, 2016
    Assignee: TruePosition, Inc.
    Inventors: Robert J. Anderson, Matthew L. Ward
  • Patent number: 9354297
    Abstract: Systems and methods are provided for determining position location information in a wireless network. In one embodiment, timing offset information is communicated between multiple transmitters and one or more receivers. Such information enables accurate position or location determinations to be made that account for timing differences throughout the network. In another embodiment, transmitter phase adjustments are made that advance or delay transmissions from the transmitters to account for potential timing differences at receivers. In yet another embodiment, combinations of timing offset communications and/or transmitter phase adjustments can be employed in the wireless network to facilitate position location determinations.
    Type: Grant
    Filed: January 5, 2006
    Date of Patent: May 31, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Fuyun Ling, Gordon Kent Walker, Krishna Kiran Mukkavilli
  • Patent number: 9331774
    Abstract: A satellite system for detecting radio frequency signals from space including at least two sensors, a processing unit and at least one receiver. Each sensor receives a plurality of radio frequency signals containing messages and outputs a sensor signal that is representative of the plurality of radio frequency signals. The processing unit selects a predetermined number of mathematical combinations of the sensor signals and combines the sensor signals into the predetermined number of mathematical combinations to produce a plurality of zone signals. The characteristics of each zone signal are undefined at the time the predetermined number of mathematical combinations is selected. The receiver extracts the messages contained in the zone signals.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: May 3, 2016
    Assignee: exactEarth Ltd.
    Inventors: Weiguo Chen, Arunas Gabriel Macikunas
  • Patent number: 9331798
    Abstract: A system and method for determining the location of a mobile device in a communications network having one or more proximity sensors. A request to locate the mobile device may be received and at least one of the proximity sensors tasked to receive a signal transmission from the mobile device. One or more signal characteristics of the signal transmission from the mobile device may be measured by each tasked proximity sensor, and a location of the mobile device determined as a function of the measured characteristics. This may be accomplished by associating a fixed location with each tasked proximity sensor, and then determining the location of the mobile device as a function of one of the associated fixed locations.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: May 3, 2016
    Assignee: CommScope Technologies LLC
    Inventors: Andrew Beck, Thomas B. Gravely
  • Patent number: 9322924
    Abstract: A frequency synthesizer in a GNSS receiver chip enables duty cycling operation of the frequency synthesizer. The frequency synthesizer is cycled on to generate required clock signals for the GNSS receiver chip, and cycled off during a measurement duty cycle comprising measurement available intervals and measurement unavailable intervals. A reference clock inputted to the frequency synthesizer is on during the measurement duty-cycle. During the measurement available intervals, the frequency synthesizer is cycled on to generate the required clock based on the reference clock. During the measurement unavailable intervals, the frequency synthesizer is cycled off and clock timing is maintained based on the reference clock. A number of elapsed clock cycles of the reference clock is captured for a measurement unavailable interval and transferred to a clock offset. The GNSS receiver chip processes signals received using the required clock and the clock offset in a following measurement available interval.
    Type: Grant
    Filed: January 12, 2009
    Date of Patent: April 26, 2016
    Assignee: Broadcom Corporation
    Inventor: Charles Abraham
  • Patent number: 9322918
    Abstract: Methods and apparatus are presented for improved productivity in determining static position of an antenna of a GNSS rover, such as in stop-and-go surveying. Computer-implemented methods and apparatus provide for determining a static position of an antenna of a GNSS rover from observations of GNSS signals collected at the antenna over multiple epochs and from correction data for at least one of the epochs.
    Type: Grant
    Filed: February 20, 2010
    Date of Patent: April 26, 2016
    Assignee: Trimble Navigation Limited
    Inventors: Ulrich Vollath, Nicholas Charles Talbot
  • Patent number: 9318804
    Abstract: An antenna array for the transmission of signals is disclosed which comprises a plurality of antenna elements connected to a plurality of transceivers. The plurality of transceivers receive transceiver signals for transmission to the plurality of antenna elements. The antenna comprises a failure detector or monitoring and control system connected to the plurality of transceivers, which autonomously detects malfunction of the individual transceivers and reports this to the signal processor without involvement of the transmitter and receiver. The antenna array also comprises a signal processor connected to the plurality of transceivers and adapted to weight using complex values the transceiver signals for automatically compensating for power losses by tilt adjustments and for interference by suppression of sidelobes of the signals based on the information from the failure detector or monitoring and control system.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: April 19, 2016
    Inventors: Martin Weckerle, Dirk Neumann
  • Patent number: 9316496
    Abstract: Position determination method for a target point, using a geodetic measuring device, such as a total station or a theodolite, having a distance and angle measurement functionality, a sighting device, and a first radio module, and using a hand-held data processing device, such as a data logger for the measuring device, having a second radio module. The data processing device is positioned within a specified radius of the target point. As part of the method, a radio connection is established between the first and the second radio modules, and the position of the target point is determined. A rough distance between the first and the second radio modules is determined based on a propagation time of interrogation and/or response signals of the radio connection and is used to locate the target—as displaying, detecting, identifying, and/or sighting the target point—or to exclude further possible target point candidates.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: April 19, 2016
    Inventors: Alastair Green, Daniel Nindl
  • Patent number: 9316731
    Abstract: A method of tracking a second electronic device with respect to a first electronic device is disclosed. The method includes transmitting a first waveform of a first frequency along a first fixed path associated with the first device. A second waveform having a frequency based on the first frequency is wirelessly transmitted from the first device to the second device along a first wireless path. The second waveform is wirelessly transmitted from the second device to the first device along a second wireless path. The first and second waveforms are received at the phase comparator circuit. A first phase relationship of the received first waveform is then compared to a second phase relationship of the received re-transmitted waveform. A coordinate of the second device is determined with respect to a reference coordinate based on the comparing.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: April 19, 2016
    Assignee: Lattice Semiconductor Corporation
    Inventors: Frederick A. Ware, Farshid Aryanfar, John Brooks
  • Patent number: 9312940
    Abstract: To enable high-speed learning of an antenna directionality to be used for millimeter-wave communication, there is provided a communication device including a first radio communication unit capable of radio communication in accordance with a first communication method, and a second radio communication unit capable of radio communication in accordance with a second communication method using a higher frequency band than the first communication method, in which, upon receiving an instruction signal instructing to learn a beam directionality, the first radio communication unit determines a reception start time point of a beam reference signal based on the instruction signal, and the second radio communication unit starts reception of the beam reference signal from the reception start time point determined by the first radio communication unit and determines a parameter value for specifying an optimum beam pattern based on the received beam reference signal.
    Type: Grant
    Filed: January 18, 2010
    Date of Patent: April 12, 2016
    Assignee: Sony Corporation
    Inventors: Hiroaki Takano, Yuichi Morioka, Takushi Kunihiro
  • Patent number: 9281559
    Abstract: A system for aligning two ground-based antennae (100, 110) or a ground-based antenna (100) and a satellite antenna (110), for use in military and civilian settings, in which a visual display is generated showing a graphical representation of the antennae including graphical representations indicating both the axis of the main lobe (102) and the approximate radiation pattern (414) of the antennae, superimposed over a live imaging of the local terrain. The alignment is achieved when the graphical representations of the main axis and radiation patterns of the two antennae align with each other.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: March 8, 2016
    Assignee: Harris Corporation
    Inventors: Nathan Ransom, Myung Lee