Patents Examined by Chuong P Nguyen
  • Patent number: 10320466
    Abstract: Disclosed are an apparatus and a method for estimating a parameter of a multi path signal. The apparatus for estimating a parameter of a multi path signal includes: a plurality of pre-processing units configured to pre-process respective reception signals received through a plurality of antennas; a plurality of parameter converting units configured to approximate a parameter set of the respective pre-processed reception signals to have a sparse characteristic in a Doppler frequency and angle of arrival domain; and a parameter estimating unit configured to estimate an angle of arrival for a plurality of reception signals in each frequency region of the Doppler frequency and angle of arrival domain.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: June 11, 2019
    Inventors: Juyul Lee, Myung Don Kim, Jinup Kim, Hyun Kyu Chung, Minuk Kim, Jubum Kim, Eun Ae Lee, Joon Ho Cho
  • Patent number: 10306430
    Abstract: In one embodiment, a method includes receiving a portion of a data offload from a radar antenna of a first vehicle. The data offload includes data packets that each include a sequence number and a total number of data packets in the data offload. The method includes generating a data packet log, storing in the data packet log the sequence number of each received data packet, determining that one or more sequence numbers are missing from the data packet log, and sending to the radar antenna, a communication signal that includes an acknowledgement and the sequence numbers that are missing from the data packet log. The method also includes determining that one or more data packets of the data offload include a location of an object in an environment surrounding the first vehicle, and sending the location of the object to a second radar antenna of a second vehicle.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: May 28, 2019
    Assignee: Lyft, Inc.
    Inventors: Farzad Cyrus Foroughi Abari, Romain Clément
  • Patent number: 10281583
    Abstract: Disclosed herein are system, apparatus, article of manufacture, method and/or computer program product embodiments for detection of satellite system anomalies. An embodiment operates by receiving satellite signals from a plurality of sources via at least one satellite system receiver and determining the presence of anomalous satellite system activity by comparing an amount of signal strength drop of each of the satellite signals during a time period to a threat detection threshold and by comparing an amount of consistency of the satellite signals during the time period to the threat detection threshold.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: May 7, 2019
    Assignee: The MITRE Corporation
    Inventors: Darrow Paine Leibner, Robert James Reynolds, Jeffrey Joseph Robble, Charles Borromeo Dunn
  • Patent number: 10274606
    Abstract: A system and related methods for determining precision navigation solutions decorrelates GPS carrier-phase ambiguities derived from multiple-source GPS information via Least-squares AMBiguity Decorrelation Adjustment (LAMBDA) algorithms, and fixes a subset of the decorrelated integer ambiguities within the LAMBDA domain. To maintain high accuracy, a partial almost fix solution is generated using the subset of the decorrelated ambiguities to be fixed in the LAMBDA domain. The subset of decorrelated ambiguities is used to compute protection levels and the probability of almost fix (PAF), or that the navigation solution corresponding to the decorrelated ambiguities is within the region of correctly-fixed or low-error almost-fixed ambiguities. The partial list of fixed ambiguities is used to generate the optimal navigation solution (floating-point, partial almost-fix, or fully fixed) while maintaining protection levels within alert limits and PAF above the desired threshold.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: April 30, 2019
    Assignee: Rockwell Collins, Inc.
    Inventors: Huan T. Phan, Gary A. McGraw, Michael J. Armatys
  • Patent number: 10274602
    Abstract: Determination of a signal loss profile relative to a receiver based on measured signal power of a sounding signal from a sounding transmitter having a known signal power in free space relative to the receiver. The signal loss profile may include a plurality of signal loss values corresponding to a plurality of received sounding signals at the receiver. In an embodiment, the sounding signal may comprise a GNSS navigational signal (e.g., a GPS signal). The signal loss profile may be used to extrapolate signal loss for a transmitter collocated with the receiver. In turn, the signal loss profile may be used in conjunction with a shared spectrum system to model a signal propagation from the collocated transmitter when determining allocation of a shared spectrum resource of the shared spectrum system.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: April 30, 2019
    Assignee: iPosi, Inc.
    Inventors: Richard M. Lee, Christopher Neil Kurby, Eric Derbez
  • Patent number: 10267919
    Abstract: A positioning system includes an on-board device that includes a positioning signal receiver that receives positioning signals from plural artificial satellites, a signal generator that generates a correction signal for correcting a positioning result based on the plural positioning signals, and a broadcast distribution unit that employs a geostationary satellite to distribute the correction signal together with another broadcast signal. The signal generator generates plural of the correction signals corresponding to plural distribution target regions set such that the entire area of a distribution target is covered. The broadcast distribution unit simultaneously distributes all the plural correction signals to each of the plural distribution target regions.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: April 23, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Akira Nagao
  • Patent number: 10267895
    Abstract: Various technologies for identifying RF emitters in geolocation datasets are described herein. Doppler signatures of RF emitters and geolocation data of objects in a scene are collected simultaneously, then range-rate profiles of the movement of the RF emitters and the objects in the scene are computed. An RF emitter is identified in a geolocation dataset by comparing the motion of the RF emitter with the motion of an object in the scene as described by the respective range-rate profiles.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: April 23, 2019
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Richard M. Naething, Richard C. Ormesher
  • Patent number: 10263330
    Abstract: An antenna arrangement includes an antenna element and a corresponding feeder line configured to feed a signal to and from the antenna element, and includes a portion of a couplerline spaced apart from but proximate to the antenna element, the feeder line, and a selectivity element. The portion of the couplerline is configured to receive via inductive coupling the signal from one or both of the feeder line and the antenna element, and to transmit a signal via inductive coupling to the feeder line and/or the antenna element. The antenna arrangement includes the selectivity element, which is spaced apart from but proximate to the antenna element, the feeder line, and the portion of the couplerline, and which is configured to select or not select the antenna element for coupling to the portion of the couplerline. An apparatus may include multiple antenna arrangements (with subgroups) and be configured for AAS calibration.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: April 16, 2019
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Risto Tapani Martikkala, Asko Heikki Nykanen
  • Patent number: 10254409
    Abstract: A device and a method determine a sample point specific vertical total electronic content which is the electron content along a sample point specific vertical path that extends through the center of the earth and the sample point. A first inclined total electronic content is determined and refers to the electron content along an inclined beam path. A first and a further sample point along the beam path are selected. An initial sample point specific vertical total electronic content is determined for each sample point. An increment electron content is determined and refers to the electron content of the increment associated with the sample point. A further inclined total electronic content is determined. A sample point specific conversion function is determined. The sample point specific vertical total electronic content is determined from the first inclined total electronic content and the sample point specific conversion function.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: April 9, 2019
    Assignee: Deutsches Zentrum fuer Luft- und Raumfahrt e.V.
    Inventors: Norbert Jakowski, Mohammed Mainul Hoque
  • Patent number: 10241211
    Abstract: A method, GNSS simulator, and non-transitory computer readable medium for providing a simulated global navigation satellite system (GNSS) signal. The method includes receiving, by a GNSS simulator, a precision timing signal and one or more items of ephemeris data from a GNSS receiver based on a decoded GNSS signal received by the GNSS receiver. The precision timing signal and the one or more items of GNSS ephemeris data are received in a digital format over a communication network. A simulated GNSS signal is generated, by the GNSS simulator, based on the received precision timing signal and one or more items of ephemeris data. The simulated GNSS signal is transmitted, by the GNSS simulator, over a coverage area. A GNSS system for providing a simulated GNSS signal is also disclosed.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: March 26, 2019
    Assignee: Spectracom Corporation
    Inventors: Lisa Perdue, David Sohn, Paul Myers
  • Patent number: 10228441
    Abstract: Embodiments for accurately tracking objects in three-dimensional space by at least one processor device. Inter-device communications are sent between a plurality of stationary radio frequency elements to triangulate a three-dimensional position between the plurality of stationary radio frequency elements and a tracking element registerable to a user, the tracking element also in radio frequency communication with the plurality of stationary radio frequency elements. The tracking element moves, and is tracked by, the plurality of stationary radio frequency elements through the three-dimensional space.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: March 12, 2019
    Inventors: Emmanuel Barajas Gonzalez, Shaun E. Harrington, Harry McGregor, Christopher B. Moore
  • Patent number: 10228439
    Abstract: In a general aspect, motion is detected based on statistical parameters of received wireless signals. In some aspects, signals are obtained. The signals are based on wireless signals transmitted through a space and received at a wireless communication device. Values of a set of statistical parameters are computed for each signal, and filtered values are obtained by applying a filter to the values of the statistical parameters. The filter includes parameters based on a signal quality analysis of the wireless signals. A motion detection process is executed to determine, based on the filtered values, whether an object moved in the space.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: March 12, 2019
    Assignee: Cognitive Systems Corp.
    Inventors: Christopher Vytautas Olekas, Yunfeng Piao, Stephen Arnold Devison
  • Patent number: 10228445
    Abstract: A computer broadcasts a tier 1 signal from a target device and records transmission data of the broadcast. The computer detects the tier 1 signal at nearby propagator devices and records additional transmission data before determining whether a propagation limit has been reached. Based on not reaching the propagation limit, the computer instructs the nearby propagator devices to broadcast a tier 2 signal. The computer records further transmission data at other nearby propagator devices detecting the tier 2 signal and, again, determines whether the propagation limit has been reached. Based on determining that the propagation limit has been reached, the computer filters outliers from all the transmission data and determines the precise location of the target device. Furthermore, the computer displays the relative location of the target device on one or more devices.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: March 12, 2019
    Assignee: International Business Machines Corporation
    Inventors: White W. H. Hsu, Joey H. Y. Tseng, Yu-Hsing Wu, Hsieh-Lung Yang
  • Patent number: 10222445
    Abstract: A system includes a phased array antenna that is used to emulate antennas that have larger solid angle coverage and lower gain compared to a single beam of the phased array antenna. This is achieved by switching between beams of the phased array antenna while receiving a wireless communication signal and summing representations of signal energy received using the different beams. The system can be used to narrow down the angular coordinates of a transmitting satellite by emulating antenna patterns that cover portions of a search space. The system can also be used to determine a channel discriminator (e.g., frequency, code, time slot) that defines a signal being transmitted.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: March 5, 2019
    Assignee: Maxtena, Inc.
    Inventors: Nathan Cummings, Stanislav Licul, Carlo DiNallo
  • Patent number: 10222482
    Abstract: A timing signal generation device includes a GPS receiver that performs a positioning calculation based on a satellite signal; and a digital signal processor that generates position information regarding a reception point based on a value present within a range of A±?/4 wherein A is a most frequent value or a median value of a plurality of positioning calculation results of the GPS receiver and ? is a standard deviation of the plurality of positioning calculation results. A timing signal is generated based on the satellite signal from at least one position information satellite and the position information regarding the reception point.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: March 5, 2019
    Assignee: Seiko Epson Corporation
    Inventor: Hiroyuki Shimada
  • Patent number: 10211529
    Abstract: A phased array antenna system with electrical tilt control incorporates a tilt controller (62) for splitting an input signal into three intermediate signals, two of which are delayed by variable delays T1 and T2 relative to the third. A corporate feed (64) contains splitters S3 to S10 and hybrids H1 to H6 for processing the intermediate signals to produce drive signals for elements of an antenna array (66); the drive signals are fractions and vector combinations of the intermediate signals. The tilt controller (62) and the corporate feed (64) in combination impose relative phasing on the drive signals as appropriate for phased array beam steering in response to variable delay of two intermediate signals relative to the third intermediate signal.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: February 19, 2019
    Assignee: Quintel Technology Limited
    Inventors: Philip Edward Haskell, Louis David Thomas
  • Patent number: 10197680
    Abstract: A method for use with a Global Navigation Satellite System (GNSS) receiver is provided. The method includes obtaining a first system time from a satellite of a first satellite navigation system, obtaining a second system time from a satellite of a second satellite navigation system, calculating a difference between the first system time and the second system time to obtain a number of leap seconds between Coordinated Universal Time (UTC) and the second satellite system.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: February 5, 2019
    Assignee: Samsung Electronics Co., Ltd
    Inventor: Gary Lennen
  • Patent number: 10187029
    Abstract: A phase shifter includes an input port, a first coupling line connected to the input port, an output port, and a second coupling line connected to the output port and arranged substantially parallel to the first coupling line. The phase shifter also includes a substrate disposed between the first coupling line and the second coupling line, a first variable capacitor disposed on the first coupling line, and a second variable capacitor disposed on the second coupling line. Adjustment of one or more of the variable capacitors causes a phase shift between the input port and the output port.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: January 22, 2019
    Assignee: Google LLC
    Inventors: Farbod Tabatabai, Dedi David Haziza
  • Patent number: 10185034
    Abstract: A method for determining a position of a machine in a worksite is disclosed. The method may include determining, using a Lidar unit on the machine, input data. The input data may be associated with distances between the Lidar unit and respective light-reflective points in the worksite. The method may also include transmitting a radio-frequency communication between a first signal device at a known location within the worksite and a second signal device located on the machine. Further, the method may include determining position data for the machine based on at least the radio frequency communication. The method may also include determining a position of the machine based on the position data and the input data.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: January 22, 2019
    Assignee: Caterpillar Inc.
    Inventors: David William Smith, Peter John Broughton
  • Patent number: 10177451
    Abstract: Wide band adaptive beam forming methods and systems are provided. The beam forming methods can include receiving signals at multiple antenna elements and digitizing samples of the received signals for some period of time. The samples are divided into sub-channels according to frequency, and interferers are identified as signals appearing across at least some minimum number of the sub-channels. After removing signals not identified as interferers from the collected signal information, that information is used to calculate weights for forming a beam having a null at the identified location of the interferer. The beam forming systems include multiple element antennas having arms in the form of a spiral, and processing hardware for performing adaptive beam forming.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: January 8, 2019
    Inventors: Mara S. Baraban, Jacob A. Sauer, Mark Curtis Leifer, Stanton B. McMillan