Patents Examined by Dao L. Phan
  • Patent number: 11391850
    Abstract: Provided is a BeiDou navigation satellite B1C signal capturing method, including: mixing a digital intermediate frequency signal with a local intermediate frequency carrier signal to obtain a baseband signal; obtaining a local BOC-like signal on a data channel and a local BOC-like signal on a pilot channel; processing the local BOC-like signal on the data channel and the local BOC-like signal on the pilot channel to obtain a cross-correlation result of the data channel and a cross-correlation result of the pilot channel; performing a linear operation on the cross-correlation result of each of the two channels through a pseudo-correlation function generator to eliminate a secondary peak in the cross-correlation result of each of the two channels, and obtain an optimized cross-correlation result of each of the two channels; and capturing a satellite signal based on the optimized cross-correlation result of each of the two channels.
    Type: Grant
    Filed: January 27, 2022
    Date of Patent: July 19, 2022
    Assignees: Guangdong University of Technology, Russian Academy of Engineering
    Inventors: Shengli Xie, Xiaobo Gu, Kan Xie, Guoxu Zhou, Haochuan Zhang, Victor Fedorovich Kuzin
  • Patent number: 11378698
    Abstract: A platform with a signal generation unit and a transmitting unit. The signal generation unit is adapted to generate a spreading code sequence. The spreading code sequence has a reference chip with a rising edge and a falling edge. The signal generation unit is adapted to adjust the spreading code sequence to ensure that the rising edge or the falling edge of the reference chip arrives at a Virtual Timing Reference Station, VTRS, on a predetermined time (tref,VTRS). The transmitting unit is adapted to engage with the signal generation unit and adapted to transmit the spreading code sequence. Further, a user device for receiving the transmitted spreading code sequence.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: July 5, 2022
    Assignee: Airbus Defence and Space GmbH
    Inventors: Francis Soualle, Jean-Jacques Floch, Thomas Bey
  • Patent number: 11372112
    Abstract: A GNSS (Global Navigation Satellite System) receiver apparatus includes a bank of correlators configured to receive in-phase and quadrature versions of a received signal. A code numerical controlled oscillator is configured to determine a code frequency. A GNSS pseudo random noise sequence generator is configured to generate a pseudo random noise sequence at the code frequency set by the code numerical controlled oscillator. A GNSS pseudo random noise delayed sequence generator includes a first shift register and a second shift register. Taps of the shift registers are selectable as a punctual replica, an early replica and a delayed replica of the pseudo random noise sequence. An enable circuit is configured to generate an enable signal coupled to an enable input of the flip-flops, the enable signal operating at a selectable enable frequency.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: June 28, 2022
    Assignee: STMicroelectronics S.r.l.
    Inventor: Gennaro Musella
  • Patent number: 11366235
    Abstract: The determination of an integer value bias may be performed at high speed. A positioning device, may include a FLOAT solution calculating part and an integer value bias determining part. The FLOAT solution calculating part may use carrier phase differences between carrier phases obtained by a plurality of antennas of a first station and a carrier phase obtained by one or more antennas of a second station provided separately from the first station to calculate a FLOAT solution of a particular position that is a relative position with respect to the second station, without using posture information on the first station. The integer value bias determining part may determine an integer value bias of the carrier phase difference, using the FLOAT solution of the particular position and the posture information on the first station.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: June 21, 2022
    Inventors: Hiroyuki Toda, Naomi Fujisawa, Hiraku Nakamura
  • Patent number: 11366234
    Abstract: The present disclosure discloses a method and a system for preventing leakage of Beidou differential positioning data. The method includes the following steps: step 1, determining the number of positioning terminals; step 2, making identification cards, wherein one identification card corresponds to one positioning terminal, and writing data into each identification card; step 3, putting the identification cards into the card slots of the positioning terminals corresponding to the identification cards; step 4, verifying whether the read data is accurate; step 5, generating the Beidou differential positioning data by the positioning base station, a positioning satellite and the positioning terminals operating normally. The system includes a positioning base station, a positioning satellite, a service terminal, a card issuing device, a plurality of identification cards and a plurality of positioning terminals.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: June 21, 2022
    Inventors: Jianying Jiao, Tao Zhang, Yanshuang Li, Shaoping He, Xiaolin Qi
  • Patent number: 11333769
    Abstract: A system and method generates a phase scintillation map that is utilized to de-weight satellite signal observations from GNSS satellites. One or more base stations each assign an index value to one or more GNSS satellite in view, where the index value indicates an adverse effect of ionospheric scintillation on signals received from the GNSS satellite. The values and identifiers may be transmitted to a server. The server utilizes the received information to generate the phase scintillation map that may include one or more scintillation bubbles, wherein a location of each scintillation bubble is based on the received information. The phase scintillation map is transmitted to one or more rovers. The rover determines if a pierce point associated with a selected GNSS satellite in view of the rover falls within the boundaries of a scintillation bubble. If so, satellite signal observations from the selected GNSS satellite are de-weighted.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: May 17, 2022
    Assignee: NovAtel Inc.
    Inventor: Thomas Morley
  • Patent number: 11327142
    Abstract: Transmitter tracking systems and methods are provided that utilize a phased array antenna. With the antenna forming a beam that is pointed in a first direction for a first frequency, a plurality of radio frequency (RF) signals, each associated with different carrier frequency and produced by a first transmitter, are received. The amplitudes of the received signals are used to determine whether the beam is pointed at the first transmitter. The amplitude information can also be used to determine a direction in which to point the beam if it is determined that the beam is not pointed at the first transmitter. The systems and methods can be applied to 5G, satellite communication, or other systems incorporating a phased array antenna.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: May 10, 2022
    Assignee: Ball Aerospace & Technologies Corp.
    Inventor: Zachary T. Miers
  • Patent number: 11327179
    Abstract: A method and system for tracking the real-time positions of airport ground vehicles, and integrating the positional data into the Automatic Dependent Surveillance-Broadcast (ADS-B) network infrastructure. The system may include one or more ground receiver stations that receives positional telemetry data from one or more airport ground vehicles, and transmits the ground vehicle positional data to a centralized ground base station. A computer system connected to the ground base aggregates the ground vehicle telemetry data from one or more ground vehicles, converts the aggregate telemetry data into an ADS-B compatible data protocol, and integrates that data into the ADS-B network infrastructure for dissemination and reporting across the ADS-B network. The method enables the use of and dissemination of ADS-B information for ground vehicles without the need for ADS-B transponders on each ground vehicle.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: May 10, 2022
    Inventors: Stephen Lyle McKeown, Rick Thibodeau, Paul Edward Cudmore, Ty Shattuck
  • Patent number: 11300689
    Abstract: A system and method for determining a receiver position can include determining a receiver position based on a set of satellite observations, determining the receiver position based on sensor measurements, determining a satellite observation discontinuity; based on the satellite observation discontinuity, determining a second receiver position.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: April 12, 2022
    Assignee: Swift Navigation, Inc.
    Inventors: Fergus MacPherson Noble, S├ębastien Carcanague, Paul Grgich
  • Patent number: 11294064
    Abstract: A first apparatus assembles assistance data for a satellite signal based positioning of a device, the assistance data comprising a satellite specific ionospheric model for at least one specific satellite and a time stamp that relates the satellite specific ionospheric model to particular ephemeris data for the at least one specific satellite. The assistance data is provided for transmission. A second apparatus receives the assistance data and computes a position of the device making use of the particular ephemeris data and of the satellite specific ionospheric model.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: April 5, 2022
    Assignee: HERE Global B.V.
    Inventor: Jari Syrjarinne
  • Patent number: 11283512
    Abstract: A method and system for installing a terrestrial antenna for a satellite communication network. In the system and method, a remote unit is provided to an installation location for the terrestrial antenna. The remote unit is configured to communicate with a satellite of the satellite communication network and includes a memory in which is stored antenna information pertaining to positioning of the terrestrial antenna with respect to a virtual beam generated by the satellite. The information is accessible by a code. Thus, the antenna information is access from the memory at the installation location using the code, and the terrestrial antenna in relation to a virtual beam generated by the satellite based on the antenna information accessed from the memory at the installation location.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: March 22, 2022
    Inventors: Yeqing Tang, David Whitefield, Aniket Pugaonkar, Adam Axelrod, Archana Gharpuray
  • Patent number: 11269040
    Abstract: The present disclosure is directed to systems and methods that include a beacon that includes an antenna; data storage configured to store a code that is calculated according to an algorithm and based on a first variable, the first variable being defined according to a first interval of time; and a processor configured to cause the code to be emitted by the beacon.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: March 8, 2022
    Assignee: VERVE GROUP, INC.
    Inventors: Daniel Newman, Dustin Candland, Daniel Pier
  • Patent number: 11269082
    Abstract: Sensor-assisted location technology is disclosed. Primary location technologies, such as GPS, can be used to determine the current location (e.g., a location fix) of a location-enabled device. In some instances, the primary location technology may be unreliable and/or consume more power than an alternative location technology. Sensors, such as accelerometers, compasses, gyrometers, and the like, can be used to supplement and/or increase the accuracy of location data. For example, a location-enabled device can identify an area with unreliable GPS location data and use sensors to calculate a more accurate location. Areas identified may be crowd-sourced. Sensors can be used to identify errors in the location data provided by primary location technology. Sensors can be used to modify a sampling interval of the primary location technology. Sensor can be used to smooth motion on a user interface between sampling intervals of the primary location technology.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: March 8, 2022
    Assignee: Apple Inc.
    Inventor: Devrim Varoglu
  • Patent number: 11264715
    Abstract: A phased-array includes, in part, N transceivers each including a receiver and a transmitter, and a controller. The phased array is configured to transmit a first radio signal from a first element of the array during a first time period, receive the first radio signal from a second element of the array, recover a first value associated with the radio signal received by the second element, transmit a second radio signal from the second element of the array during a second time period, receive the second radio signal from the first element of the array, recover a second value associated with the radio signal received by the first element, and determine a first phase of a reference signal received by the second element from the recovered first and second values. The first phase is relative to a second phase of the reference signal received by the first element.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: March 1, 2022
    Assignee: California Institute of Technology
    Inventors: Austin Fikes, Behrooz Abiri, Florian Bohn, Seyed Ali Hajimiri, Christopher Ian Walker, David Elliot Williams
  • Patent number: 11255978
    Abstract: Systems and methods for receiving GNSS and corrections signals by a GNSS rover. The GNSS rover may include a radome enclosing a GNSS antenna and a GNSS front end. The GNSS rover may also include a corrections antenna attached to a connection housing and configured to receive corrections signals from a base station. The connection housing may be configured to removably attach to the radome. The GNSS rover may further include a corrections front end enclosed within the radome and electrically coupled to the corrections antenna via capacitive coupling when the connection housing is removably attached to the radome. The GNSS rover may further include a first capacitor plate enclosed within the radome and positioned substantially parallel to an outer wall of the radome and a second capacitor plate enclosed within the connection housing and positioned substantially parallel to an outer wall of the connection housing.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: February 22, 2022
    Assignee: Caterpillar Trimble Control Technologies LLC
    Inventor: Jerald W. Yost
  • Patent number: 11243303
    Abstract: In a vehicle, a vehicle body-side apparatus is configured to perform a main area determination and an auxiliary area determination. The main area determination determines whether a portable terminal is present in a main area based on a first reception intensity measured by the vehicle body-side apparatus in a wireless signal from the portable terminal. The auxiliary area determination determines whether the portable terminal is present in an auxiliary area based on a second reception intensity measured by a vehicle tire-side apparatus in a wireless signal from the portable terminal.
    Type: Grant
    Filed: July 6, 2020
    Date of Patent: February 8, 2022
    Inventors: Hidenori Osai, Kenichiro Sanji, Takatoshi Sekizawa
  • Patent number: 11226417
    Abstract: The subject matter disclosed herein relates to determining a background location of a mobile device using one or more signal metrics.
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: January 18, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Marc Anthony Ische, Ahmad Hatami, Ardalan Heshmati, Zoltan Biacs, Douglas Neal Rowitch, Dominic Gerard Farmer, Srigouri Kamarsu, Jie Wu
  • Patent number: 11215691
    Abstract: A radio frequency identification (RFID) system includes an array of antennas to distinguish line-of-sight (LOS) paths from non-line-of-sight (NLOS) paths. The distance between adjacent antennas in the array of antennas is less than half the wavelength of the radio frequency (RF) signal of the system. Each antenna in the antenna array is also digitally controlled to change relative phase difference among the antennas, thereby allowing digital steering of the array of antennas across angles of arrival (AOAs) between 0 and ?. The digital steering generates a plot of signal amplitudes as a function of AOAs. LOS paths are distinguished from NLOS paths based on the shapes (e.g., depth, gradient, etc.) of local extremes (e.g., maxima or minima) in the plot.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: January 4, 2022
    Assignee: Automaton, Inc.
    Inventors: Spencer Hewett, Adam Blair, Ken Seiff, Michael Murphy, Mark Wieman, Tamara Adlin
  • Patent number: 11211695
    Abstract: A satellite communication assembly includes a transmit antenna array including a matrix of antenna elements, a receive antenna array, and a transmit circuit for the transmit antenna array. The transmit circuit includes, for each of the antenna elements, a first splitter, a second splitter, a first pair of phase shifters, a second pair of phase shifters, a first pair of variable gain amplifiers, a second pair of variable gain amplifiers, a first pair of power amplifiers, a second pair of power amplifiers, a first combiner, and a second combiner.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: December 28, 2021
    Assignee: Rockwell Collins, Inc.
    Inventors: Lee M. Paulsen, Nahiyan Ali, Jaber A. Khoja
  • Patent number: 11205842
    Abstract: A terrestrial high frequency data communication system and method for implementing a pointing algorithm for endpoint nodes are described. The system includes an aggregation node and one or more endpoint nodes. In one example, a pointing direction for an endpoint node is determined based on a number of packet error rate (PER) measurements associated with a high frequency data communication link between the endpoint node and an aggregation node. Preferably, the endpoint node includes a steerable antenna module that includes one or more antennas. The steerable antenna module is configured to receive an azimuth value and an elevation value determined based on PER measurements associated with the high frequency data communication link, and to steer its one or more antennas based on the azimuth value and the elevation value to point to the aggregation node.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: December 21, 2021
    Assignee: Starry, Inc.
    Inventor: Joseph Thaddeus Lipowski