Including A Satellite Patents (Class 342/352)
  • Patent number: 10775511
    Abstract: A Global Navigation Satellite System (GNSS) receiver includes a wideband signal correlator and a multipath mitigator. The wideband signal correlator generates wideband correlation signals of at least one of a plurality of GNSS signals with respect to corresponding locally generated code replica signals in which a bandwidth of the wideband signal correlation module is at least about 20 MHz. The multipath mitigator determines a Line of Sight (LOS) signal from the wideband correlation signals. The GNNS receiver may include a narrowband signal correlator to generate narrowband correlation signals of the at least one GNSS signal with respect to corresponding locally generated code replica signals in which a bandwidth of the narrowband signal correlation module is less than about 6 MHz. The multipath mitigator further corrects a range and range-rate measurement generated from the narrowband correlation signals based on a code phase and a carrier estimated based on the LOS signal.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: September 15, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Gary Lennen
  • Patent number: 10757677
    Abstract: A non-transitory computer-readable recording medium having stored therein a base station determination program for causing a computer to execute a process includes: acquiring position information on a communication terminal; assigning, based on position information on each of a plurality of base stations stored in advance in a storage and the acquired position information on the communication terminal, one or more base stations other than a base station that includes a point at which a radio wave characteristic based on longitude information changes in a time slot during which communication is to be performed, and which is provided between a position of the base station and a position of the communication terminal, as one or more base station candidates from among the plurality of base stations; and determining a base station that is to communicate with the communication terminal from among the one or more base station candidates.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: August 25, 2020
    Assignee: FUJITSU LIMITED
    Inventors: Taki Kono, Akira Kato, Kosei Takano, Machiko Kawamura, Yukio Sato, Kanami Hitsuda, Teruaki Nakayama, Hiroki Nikai
  • Patent number: 10754042
    Abstract: A device for producing timing information comprises equipment (101) that extracts first preliminary timing information from a first circular polarized component of a radio signal and second preliminary timing information from a second circular polarized component of the radio signal. The second circular polarized component has an opposite handedness and a time-delay with respect to the first circular polarized component. The device comprises a processing system (102) that produces the timing information based on the first preliminary timing information and/or the second preliminary timing information, and uses stored correction data for reducing the effect of the time-delay on the timing information when using the second preliminary timing information for producing the timing information. Thus, the timing information corresponds to the first preliminary timing information also when the timing information is produced based on the second preliminary timing information.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: August 25, 2020
    Assignee: ADVA OPTICAL NETWORKING SE
    Inventor: Kenneth Hann
  • Patent number: 10754043
    Abstract: A receiver and a receiving method for receiving wideband binary-offset-carrier modulated signals. The receiver includes a tracking apparatus which includes an upper sideband processor operable to generate upper sideband correlations through correlating a local upper sideband replica against a received navigation signal, a lower sideband processor operable to generate lower sideband correlations through correlating a local lower sideband replica against the received navigation signal, and an estimator operable to determine a delay estimate based on the upper sideband correlations and the lower sideband correlations.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: August 25, 2020
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Yonghui Zhu, Xiaowei Cui, Mingquan Lu
  • Patent number: 10746881
    Abstract: A measuring device serves the purpose of testing a location tracking of a device under test. The measuring device comprises a global navigation satellite system simulator adapted to wirelessly transmit a radio frequency global navigation satellite system signal to a device under test, and a base station simulator adapted to wirelessly transmit a real-time kinematic signal to the device under test. The measuring device is adapted to compare a location, determined by the device under test based on the radio frequency global navigation satellite system signal and the real-time kinematic signal, with an ideal location, upon which the radio frequency global navigation satellite system signal and the real-time kinematic signal are based.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: August 18, 2020
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventor: Stefan Maier
  • Patent number: 10750541
    Abstract: An information handling system may include a network interface device; an antenna communicatively coupled to the network interface device to communicatively couple the information handling system to a wireless network device; and an antenna optimization system to selectively switch the antenna between an omni-directional antenna electromagnetic radiation pattern during listening periods for channel occupancy during collision avoidance protocol to a directed electromagnetic radiation pattern emission during data transmissions directed to the wireless network device.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: August 18, 2020
    Assignee: Dell Products, LP
    Inventor: Kamal J. Koshy
  • Patent number: 10670731
    Abstract: A position and azimuth measurement device capable of measuring geographical coordinates and azimuth angles and a surveying device are provided. The position and azimuth measurement device includes a GNSS device, having a GNSS antenna for obtaining position information thereof; a horizontal rotating section capable of rotating the GNSS antenna horizontally; a leveling section capable of leveling the horizontal rotating section; a horizontal angle detector configured to detect a horizontal angle of the horizontal rotating section; and a control device. The control device causes the GNSS device to continuously obtain the position information while causing the horizontal rotating section leveled by the leveling section to make one full rotation, and computes geographical coordinates and an azimuth angle on the basis of the position information obtained throughout the full rotation.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: June 2, 2020
    Assignee: TOPCON CORPORATION
    Inventor: Junichi Yuasa
  • Patent number: 10651924
    Abstract: The invention relates to a system, a receiver and a method for satellite signal transmission, wherein the method includes the steps of grouping the signals into a data stream, splitting the data stream into at least a first and one or more second packets, transmitting the first packet via a first transmission channel (Ch #1), transmitting the one or more second packets via one or more second transmission channels (Ch #2), wherein the one or more second transmission channels (Ch #2) are distinct from the first transmission channel (Ch #1) and from one another.
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: May 12, 2020
    Assignee: RAI RADIOTELEVISIONE ITALIANA S.P.A.
    Inventors: Vittoria Mignone, Bruno Sacco, Alberto Morello
  • Patent number: 10605926
    Abstract: An offset module or navigation positioning estimator determines a reference frame bias between precise point positioning (PPP) reference frame and an RTK reference frame, where the PPP reference frame is associated with relative position estimates generated by the relative position estimator and where the RTK reference frame is associated RTK position estimates generated by the RTK position estimator. Upon loss of the RTK correction signal, the navigation positioning estimator or controller switches to a relative position mode based a last available RTK position. The relative position estimator determines an estimated relative position based on time-differenced phase measurements by the mobile receiver in the relative position mode. The relative position estimator or offset module offsets the estimated relative position in the relative position mode.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: March 31, 2020
    Assignee: DEERE & COMPANY
    Inventors: F. Adhika Pradipta Lie, Michael A. Zeitzew, Yunfeng Shao, Liwen L. Dai
  • Patent number: 10609023
    Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: March 31, 2020
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Soenghun Kim, Joohyun Park, Heejeong Lee, Youmin Lee
  • Patent number: 10557944
    Abstract: Disclosed are devices, systems and techniques for propagating a system time maintained at a mobile device in a lower power mode using a sleep counter advanced by an XO crystal oscillator. In one particular implementation, a mobile device obtains initial and subsequent satellite positioning system fixes while in a higher power mode. Between the initial and subsequent position fixes, the mobile device may transition to a lower power mode during which measurements of a temperature of the XO crystal oscillator may be obtained.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: February 11, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Jie Wu, Dominic Farmer, Lalitaprasad Daita, Emilija Simic
  • Patent number: 10524185
    Abstract: A method for determining routes for a data circuit between source and destination terminals, where the circuit is formed via satellites traveling in respective non-geostationary orbits, and a total time during which the circuit is active is divided into time intervals. The determination of each route comprises, for each time interval, (i) selecting an uplink satellite to service the source terminal as an ingress node for the circuit, and (ii) determining a series of inter-satellite links connecting the uplink satellite to a downlink satellite servicing the destination terminal during the respective time interval, wherein the series of links is determined to be valid during the respective time interval. Each of the plurality of time intervals is of a duration based on a validity time, based on the satellites traveling in their respective orbits, for the inter-satellite link of all of the routes that is of the shortest duration.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: December 31, 2019
    Assignee: Hughes Network Systems, LLC
    Inventors: Stanley Kay, Anthony Noerpel, Lin-Nan Lee
  • Patent number: 10523301
    Abstract: A method and apparatus for focused communication is disclosed. The method includes a base transmitter array in communication with at least one client device at the same frequency. The base transmitter array provides a focused data communication to the client device.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: December 31, 2019
    Assignee: OSSIA INC.
    Inventor: Hatem I. Zeine
  • Patent number: 10495759
    Abstract: Disclosed herein are system, method, and computer program product embodiments for detecting spoofing of a navigation device. A plurality of anti-spoofing techniques are provided. The plurality of anti-spoofing techniques detect interference with data provided by one or more navigation devices for a plurality of threat situations. Positioning, timing and frequency characteristics associated with the one or more navigation devices are analyzed in order to identify a threat situation among the plurality of threat situations. Based on the identified threat situation one or more of the anti-spoofing techniques are executed. The one or more anti-spoofing techniques can be executed in parallel in order to provide various anti-spoofing detection techniques at the same time.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: December 3, 2019
    Assignee: The Mitre Corporation
    Inventors: Darrow Paine Leibner, Erik T. Lundberg
  • Patent number: 10499256
    Abstract: Approaches for wireless telecommunications systems (e.g., satellite systems), that employ beams that move in a pattern to increase the coverage area of the beams, are provided. A wireless telecommunications apparatus comprises an antenna configured to generate communications beams for providing data communications services over a respective coverage area on the surface of the Earth. The apparatus further comprises a processor configured to control each of at least one of the communications beams to move its coverage area in a respective pattern over a respective period of time. Further, a method comprises generating, via a wireless telecommunications apparatus, communications beams, wherein each beam provides data communications services over a respective coverage area on the surface of the Earth, and controlling each of at least one of the communications beams to move its coverage area in a respective pattern of movement over a respective period of time.
    Type: Grant
    Filed: December 30, 2017
    Date of Patent: December 3, 2019
    Assignee: Hughes Network Systems, LLC
    Inventor: Dave Roos
  • Patent number: 10461841
    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 30, 2016
    Date of Patent: October 29, 2019
    Assignee: HUGHES NETWORK SYSTEMS, LLC
    Inventors: Yeqing Tang, David Whitefield, Aniket Pugaonkar, Adam Axelrod, Archana Gharpuray
  • Patent number: 10411791
    Abstract: A transmitter for a dual-frequency satellite-to-earth downlink. The transmitter comprises a plurality of modulators, a first and a second plurality of amplifiers. In one embodiment, each of the modulators is configured to modulate respective input data onto a respective one of a first plurality of signals in a first frequency band and to modulate the respective one of the first plurality of signals onto a respective one of a second plurality of signals in a second frequency band. Each of the first plurality of amplifiers is configured to amplify one of the first plurality of signals to a first predetermined signal strength. Each of the second plurality of amplifiers is configured to amplify one of the second plurality of signals to a second predetermined signal strength. A number of the plurality of modulators is smaller than a sum of a number of the first and second pluralities of amplifiers.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: September 10, 2019
    Assignee: AIRBUS DEFENCE AND SPACE GMBH
    Inventor: Rainer Lang
  • Patent number: 10399650
    Abstract: A system for monitoring marine vessels using a satellite network may include a plurality of satellite payloads to be carried by respective satellites. Each satellite payload may include a communications interface configured to communicate via the satellite network, a radio frequency (RF) transceiver configured to communicate with the plurality of marine vessels, and a controller cooperating with the communications interface and the RF transceiver. The controller may obtain automatic identification system (AIS) data including vessel position and call sign information via the transceiver, and communicate the AIS system data via the communications interface. The system may further include a terrestrial station configured to receive the AIS system data and determine therefrom a rendezvous between marine vessels which pass within a threshold distance for greater than a threshold time.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: September 3, 2019
    Assignee: HARRIS CORPORATION
    Inventors: John L. Delay, Mark A. Ingersoll, Mark D. Rahmes, David A. Mottarella, Eric P. Spellman, Kevin L. Fox, John T. Farrell
  • Patent number: 10397920
    Abstract: A wireless communication system includes frequency reuse between terminals in common coverage regions using a multiple satellite architecture with spatial diversity. Different terminals may be associated with different ones of the satellites such that a common frequency can be reused by the different terminals. A gateway may communicate with a first satellite using a feeder beam having an overlapping geographic coverage region with a user beam used for communication between a set of user terminals and a second satellite. Spatial diversity is provided between the satellites, and the feeder beam and the user beam operate at common frequencies within the overlapping coverage region. In this manner, the bandwidth of both satellites at the common coverage region is used to increase the available capacity.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: August 27, 2019
    Assignee: Space Systems/Loral, LLC
    Inventor: Kirby Chung
  • Patent number: 10386498
    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.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: August 20, 2019
    Assignee: TADANO LTD.
    Inventor: Shoji Nishimoto
  • Patent number: 10389393
    Abstract: The present technology relates to a reception device, a receiving method, and a program capable of improving a reception state. A delay wave by multipath is estimated on the basis of sensor information detected by a sensor unit, a replica of the delay wave is generated by a sum of products of a coefficient for each delay wave and a signal of a reception wave according to delay time on the basis of the estimated delay wave by the multipath, and the generated replica of the delay wave is subtracted from the signal of the reception wave, thereby removing the delay wave from the signal of the reception wave. The present technology may be applied to a receiver which receives a broadcast wave.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: August 20, 2019
    Assignee: Sony Corporation
    Inventors: Tomoya Kojima, Yuichi Hirayama, Shigeru Sawai, Hirofumi Maruyama, Takashi Horiguti, Bostamam Anas
  • Patent number: 10389184
    Abstract: Apparatuses, methods and storage associated with data transfer using beamed power are disclosed herein. In embodiments, an electronic device may include a power beam receiver to harvest power from a beam received from a compute device. The electronic device may include may include one or more processors, devices, and/or circuitry to utilize the harvested power to facilitate at least one of receipt of data from said compute device or transmission of data to said compute device.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: August 20, 2019
    Assignee: Intel Corporation
    Inventor: Indrajith Rajapaksa
  • Patent number: 10386490
    Abstract: Some implementations provide low power reduced sampling of global positioning system (GPS) locations. A server may be configured to assist a mobile device in determining a location from a plurality of GPS signal samples and corresponding time stamps provided by the mobile device, such as by identifying a set of possible reference locations, which may be used to calculate a location of the mobile device. In another example, the mobile device may sample GPS signals using a GPS receiver, compress the samples, and provide the compressed samples to the server for processing.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: August 20, 2019
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Jie Liu, Yuzhe Jin, Nissanka Arachchige Bodhi Priyantha, Edward Hart, Amanda Souza de Paula
  • Patent number: 10382120
    Abstract: A dynamic satellite map updating system measures geographic position and travel information of in-flight aircraft in a fleet of aircraft equipped to establish in-flight connectivity services from a plurality of satellite beams. The in-flight aircraft include an on-board satellite map program with satellite map parameters to indicate which satellite beam of a group of available satellite beams is the most desirable based on the in-flight aircraft's geographic location. The system selects in-flight aircraft, determines updated satellite map parameters for the selected aircraft, and transmits the updated satellite map parameters to the aircraft to assemble new satellite map programs to relieve wireless data outage conditions on one or more of the satellite beams. The dynamic satellite updating system may transmit the updated satellite map parameters over an existing satellite data connection to make up-to-date adjustments to the communications load among the group of available satellite beams.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: August 13, 2019
    Assignee: GOGO LLC
    Inventors: David J. Montsma, Erhard G. Trudrung, Paul J. Powers, Marc A. Nesheim
  • Patent number: 10371806
    Abstract: Doppler Aided Inertial Navigation (DAIN) facilitates the determination of position, velocity and direction of mobile devices operating in highly obstructed GPS/GNSS environments. Delivering high precision, high resolution positioning information using signals of opportunity, the present invention measures the Doppler shift of a moving device using a variety of signals combined with inertial accelerometers and environmental sensors to deliver an autonomous positioning and navigation capability that does not require external infrastructure or a priori knowledge of signal sources.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: August 6, 2019
    Assignee: Telecommunications Systems, Inc.
    Inventors: Michael B. Mathews, Peter F. MacDoran
  • Patent number: 10368327
    Abstract: A method is provided for enabling communications between one or more satellites and a plurality of terminals wherein the plurality of terminals are divided into M groups of terminals and wherein the method comprising: forwarding a plurality of communication frames in a forward link, wherein said plurality of frames are divided into N sub-frames, and wherein traffic being carried along the forward link by each of the N sub-frames serves one or more groups of terminals associated with a respective satellite, and assigning, by a satellite return link scheduler, a respective capacity of the return link for at least one of the one or more groups of terminals, wherein the assignment takes into account which of the sub-frames is associated with that at least one group of the terminals.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: July 30, 2019
    Assignee: SATIXFY ISRAEL LTD.
    Inventor: Arie Keshet
  • Patent number: 10359496
    Abstract: Determining alignment and clear line-of-sight (LOS) of a satellite antenna using sensor data from an LOS sensor of the satellite antenna. Described techniques include storing first sensor data captured by the LOS sensor at a first time, the first sensor data indicating a first LOS condition of the satellite antenna corresponding to the satellite antenna having a beam LOS with a satellite of the satellite communication system that is aligned and unobstructed. The techniques may include receiving second sensor data captured by the LOS sensor at a second time after the first time, the second sensor data indicating a second LOS condition of the satellite antenna. The techniques may include determining an LOS condition change for the satellite antenna between the first time and the second time based on a comparison of the second sensor data with the first sensor data.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: July 23, 2019
    Assignee: Viasat, Inc.
    Inventors: John R. Zlogar, Philip A. Lampe, Kurt A. Zimmerman
  • Patent number: 10348347
    Abstract: An apparatus for monitoring radio frequency (RF) signals is disclosed. The apparatus includes an RF splitter, a set of track-and-hold circuits, a set of analog-to-digital circuits (ADC) and a frequency tracking module. The RF splitter splits a set of incoming RF signals into multiple RF signal paths. Each of the track-and-hold circuits, which is clocked at a different frequency than others, samples the incoming RF signals from a respective one of the RF signal paths. Each of the ADCs receives the sampled data from a respective one of the track-and-hold circuits. Each of the ADCs is also clocked at same frequency as a corresponding one of the track-and-hold circuits. The frequency tracking module determines a frequency of the incoming RF signals.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: July 9, 2019
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: Anthony J. Crawford, Christopher N. Peters, Nathaniel J. Conway, Kurt M. Foley, John C. Joseph, Mason Tremblay, Daniel W. Glass
  • Patent number: 10317236
    Abstract: A tracking device is provided and includes a processing unit that is in communication with a networking unit and a memory unit. The memory unit has executable instructions stored thereon, which, when executed, cause the processing unit to control the networking unit to coarsely identify a region currently occupied by a tracked device and determine an accurate location of the tracked device responsive to a predefined event.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: June 11, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Yuk L. Chan, Heidi Lagares-Greenblatt, Deepti M. Naphade
  • Patent number: 10310093
    Abstract: An electronic apparatus includes a controller that intermittently drives a receiver in a predetermined cycle, the receiver receiving a positioning signal to generate predetermined information, and the controller determines an upper limit of a period to be spent for the generation of the predetermined information on the basis of a period spent for the generation in the past.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: June 4, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Fumikazu Sano, Akihiro Shiratsuka
  • Patent number: 10302769
    Abstract: A system for monitoring marine vessels using a satellite network may include a plurality of satellite payloads to be carried by respective satellites. Each satellite payload may include a communications interface configured to communicate via the satellite network, a radio frequency (RF) transceiver configured to communicate with the plurality of marine vessels, and a controller cooperating with the communications interface and the RF transceiver. The controller may obtain automatic identification system (AIS) data including vessel position and call sign information via the RF transceiver, and communicate the AIS system data via the communications interface. The system may further include a terrestrial station configured to receive the AIS data, process aerial marine imagery using a fractal algorithm to assign respective vessel classifications to a plurality of marine vessels, and correlate the vessel classifications with AIS data.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: May 28, 2019
    Assignee: HARRIS CORPORATION
    Inventors: John L. Delay, Mark A. Ingersoll, Mark D. Rahmes, David A. Mottarella
  • Patent number: 10306019
    Abstract: Systems, methods, and software described herein provide enhancements for computing platforms. In one example, a computing platform includes a plurality of computing devices, with one or more of the computing devices comprising specialized roles defined by at least one among software elements and hardware elements targeted to the specialized roles. Individual ones of the computing devices are configured to identify tasks to be serviced using one or more of the specialized roles, determine one or more target computing devices among the plurality of computing devices to handle the tasks based at least in part on attributes of the target computing devices, and transfer at least task instructions for delivery to the target computing devices for performing the tasks.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: May 28, 2019
    Assignee: Vector Launch Inc.
    Inventors: Shaun Coleman, Darren D. Garber
  • Patent number: 10305581
    Abstract: Systems and methods are described herein for performing mispointing correction operations that can provide accurate pointing of an antenna towards a satellite, while also satisfying interference requirements with other satellites. As a result, the mispointing correction operations described herein can improve resource efficiency of communication systems using such antennas and help ensure compliance with interference requirements of other satellites.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: May 28, 2019
    Assignee: Viasat, Inc.
    Inventors: James E Petranovich, Bradley H Smith, Eric L Cross, Douglas J Merrell, Samuel C Finney
  • Patent number: 10298338
    Abstract: A method for evaluating the quality of a radio frequency signal for a satellite navigation system, the method comprising: sampling the payload radio frequency signal of a satellite to obtain an intermediate frequency signal, and filtering the signal; downconverting the filtered intermediate signal to obtain the corresponding actual baseband signal; generating the signal components of the ideal baseband signal branches on the basis of the obtained actual baseband signal and the signal system thereof; reproducing the ideal baseband signal, which is used to evaluating the actual baseband signal; establishing a correlation function between the actual baseband signal to be evaluated and the ideal baseband signal, and obtaining through corresponding calculations a series of quality evaluation indexes such as spurious transmission in the band and related loss, thereby enabling the evaluation of the quality of the radio frequency signal.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: May 21, 2019
    Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Zuping Tang, Jiaolong Wei, Xiaoqing Zhang, Changjian Liu
  • Patent number: 10295675
    Abstract: Methods and systems for cryptographically-secure autonomous detection of spoofed GNSS signals is provided. A method is provided that includes the steps of: generating a cryptographic code, controlling a motion of at least one antenna of a Global Navigation Satellite System (GNSS) receiver system according to the cryptographic code, detecting a plurality of satellite signals during the controlled motion of the at least one antenna, and determining, based on carrier phase variations of the detected plurality of satellite signals, whether the plurality of satellite signals originated from a spoofer transmitter.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: May 21, 2019
    Assignee: Arbiter Systems, Incorporated
    Inventors: William J. Dickerson, Robert T. Dickerson, Joshua R. Dickerson
  • Patent number: 10270524
    Abstract: A spacecraft includes a payload subsystem, the payload subsystem including a phased array of feed elements configured to illuminate an antenna reflector, a beam forming network (BFN) disposed proximate to the array of feed elements, and a plurality of power amplifiers disposed between the BFN and the array of feed elements. The BFN includes a plurality of variable amplitude and phase adjusting arrangements disposed between (i) m:1 power combiners that are communicatively coupled with the power amplifiers and (ii) at least one 1:n power splitter, where m is greater than 1, and n is greater than 2.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: April 23, 2019
    Assignee: Space Systems/Loral, LLC
    Inventor: Douglas G. Burr
  • Patent number: 10257766
    Abstract: A communication system allows communication between two users separated by a long distance includes a source ground station, a constellation, one or more linking-gateways, and a destination ground station. The constellation includes groups of communication devices orbiting or traveling around the earth. A first communication device of a first group of communication devices is in communication with the source ground station and receives a communication from the source ground station. The linking-gateway is in communication with at least the first and a second group of communication devices. The linking-gateway receives the communication from the first group of communication devices and sends the communication to a second communication device of the second group of communication devices.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: April 9, 2019
    Assignee: Google LLC
    Inventors: Travis Roland Beals, Christopher Richard Uhlik
  • Patent number: 10249201
    Abstract: An example air vehicle includes a transponder to transmit a code indicative of a communications systems failure on the air vehicle. The example air vehicle includes a satellite receiver to receive, after the transponder code has been transmitted, a message from a satellite in communication with the air vehicle. The satellite receiver is to identify the message as including a command for the air vehicle and decode the message to determine the command. The example air vehicle includes a processor to execute the command.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: April 2, 2019
    Assignee: The Boeing Company
    Inventor: Charles B. Spinelli
  • Patent number: 10241209
    Abstract: An arrangement for detecting the position of a handset comprises a vehicle having a positioning signal receiver for receiving signals of the satellites of a positioning system and an electronic processor. The processor generates a local correction signal to improve the accuracy of a position determined by the signals of a positioning signal receiver. A portable handset is equipped with a positioning signal receiver for receiving signals of the satellites of the positioning system and an electronic processor which, in operation, receives position signals from the positioning signal receiver of the handset, derives from these signals raw position data of the handset and uses these raw position data for determining the position of the handset. The raw position data of the handset are corrected by the local correction signal provided by the processor of the vehicle.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: March 26, 2019
    Assignee: DEERE & COMPANY
    Inventors: Johannes Feldhaus, Marcus Reutemann
  • Patent number: 10244453
    Abstract: Methods and apparatuses for managing inter-satellite handovers are provided to allow a user terminal to reduce the frequency of handovers while maintaining a sufficiently high system capacity in a non-geosynchronous satellite communication system. The method and apparatus for managing inter-satellite handovers may be implemented in a gateway, in infrastructure connected to a gateway, in a user terminal, or in a satellite.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: March 26, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Seyed Shwan Ashrafi, Sumeeth Nagaraja, Dan Vassilovski, Dan Zhang, James Determan, Gene Wesley Marsh, Jun Ma
  • Patent number: 10243649
    Abstract: A method and apparatus for detecting an Equivalent Isotropically Radiated Power (EIRP) degradation of a satellite radio frequency (RF) transmitter being in a repeating ground track orbit. Sets of signal-to-noise (C/N0) and satellite orbit data are obtained from first and second sources. Each data set is associated with the satellite and one of several receivers. Computing temporal information on an elevational and azimuthal satellite direction for each receiver location. A temporal information based time interval is determined for a single ground track. Determining, for each receiver, one of a first plurality of differences between a first time point data set value and a second time point data set value. The two time points differ by the time interval. A first average of the first plurality of differences is computed and compared with a predetermined threshold. A signal is triggered when the computed first average is larger than the threshold.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: March 26, 2019
    Assignee: AIRBUS DEFENCE AND SPACE GMBH
    Inventors: Martin Goetzelmann, Matthias Soellner, Joachim Schupp, Michael Kirchner
  • Patent number: 10236969
    Abstract: Systems and methods for correcting frequency error in a received signal include: receiving a satellite signal, the satellite signal having a bandwidth and a center frequency; determining the profile of the satellite signal; computing the center frequency of the satellite signal based on the profile of the received signal; and generating a reference signal at the computed center frequency. The systems and methods may further include computing a center frequency of each of a plurality of satellite signals based on the computed center frequency. Determining the profile may include sweeping a tuner above and below a given reference frequency; measuring the received signal strength during the sweeping operation; and determining the profile based on the received signal strength.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: March 19, 2019
    Assignee: Entropic Communications LLC
    Inventors: Branislav Petrovic, Tommy Yu, Troy Brandon, Ralph Duncan
  • Patent number: 10228468
    Abstract: Aspects of the disclosure provide a method for multi-path interference detection. The method includes receiving, by a positioning device, a satellite signal transmitted from a satellite. The satellite signal carries a ranging code. Further, the method includes locking an internal code generated by the positioning device to the ranging code, determining characteristics of correlations between the satellite signal and the internal code with different time shifts, and detecting satellite signal deterioration due to multi-path interference based on the characteristics of the correlations between the satellite signal and the internal code with different time shifts.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: March 12, 2019
    Assignee: Marvell International Ltd.
    Inventors: Yongsong Wang, Zhike Jia, Jian Cheng, Jiangping Deng, Feng Xu
  • Patent number: 10225038
    Abstract: A secure method and a secure provision unit provide a secured replica pseudo random noise signal for a receiver unit. A replica pseudo random noise code is modulated with a noise signal by a receiver-end provision unit. The replica pseudo random noise code has artificially produced noise superimposed thereon, so that the replica pseudo random noise code cannot be read from the noisy signal even at the receiver end, for example within a receiver or on a transmission path between provision unit and receiver.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: March 5, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventor: Rainer Falk
  • 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: 10215862
    Abstract: Systems and methods for a code carrier divergence (CCD) high-pass filter monitor are provided.
    Type: Grant
    Filed: April 7, 2014
    Date of Patent: February 26, 2019
    Assignee: Honeywell International Inc.
    Inventors: Justin Joseph Syrstad, Mats Anders Brenner, John M. Howard, Kim A. Class, Bruce G. Johnson, Randy J. Reuter
  • Patent number: 10193645
    Abstract: A satellite reception assembly may comprise a housing configured to support receipt and handling of a plurality of satellite signals. The housing may comprise circuitry incorporating integrated stacking architecture for supporting and/or providing channel and/or band stacking whereby particular channels or bands, from multiple satellite signals that are received via the satellite reception assembly, may be combined onto a single output signal that may be communicated from the satellite reception assembly to a gateway device for concurrent distribution thereby to a plurality of client devices serviced by the gateway device.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: January 29, 2019
    Assignee: MAXLINEAR, INC.
    Inventors: Glenn Chang, Brian Sprague, Madhukar Reddy
  • Patent number: 10181063
    Abstract: An encoded information reading (EIR) system can comprise a microprocessor, a memory, and at least one RFID reading device, all communicatively coupled to a system bus. The EIR system can further comprise two or more external antennas electrically coupled to a multiplexing circuit. The multiplexing circuit can be configured to electrically couple each antenna to the RFID reading device by using a time division method or a frequency division method. The external antennas can be disposed according to a spatial pattern configured to provide a spatially continuous RFID signal reception within a pre-defined area or volume. The antennas can be configured to receive RFID signals from a plurality of RFID tags attached to a plurality of items and disposed within a radio frequency range of the antennas. The EIR system can be configured to store in its memory a plurality of responses received from the plurality of RFID tags.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: January 15, 2019
    Assignee: HAND HELD PRODUCTS, INC.
    Inventors: Ynjiun Paul Wang, Huyu Qu
  • Patent number: 10164723
    Abstract: Satellite acquisition, for enabling a user device to engage in satellite communications, may be implemented using augmented reality (AR). An AR display may be presented to a user, and the user may use the AR display to point the user device toward a desired satellite. The process may include offsetting the position of a satellite icon representing the desired satellite in the AR display if acquisition is unsuccessful and thus indicating that the user device should be pointed to the offset position. In the case of a non-geosynchronous earth-orbit (non-GEO) satellite, such as a low-earth-orbit (LEO) satellite, the position of the satellite icon representing such a non-GEO satellite may be compensated for satellite movement during a satellite acquisition attempt.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: December 25, 2018
    Assignee: Higher Ground LLC
    Inventors: Robert S. Reis, Shmuel Shaffer, Bruce L. McKinley
  • Patent number: 10162061
    Abstract: Provided is a global navigation satellite system (GNSS) navigation solution generating apparatus and method, the apparatus including a determiner to determine that a spoofing signal exists in a received GNSS signal when a signal having a receiving intensity greater than a predetermined receiving intensity of a normal signal by a predetermined value range is included in the received GNSS signal, a detector to re-detect the normal signal from the GNSS signal when the spoofing signal is determined to exist, and a calculator to generate a GNSS navigation solution by tracking the re-detected normal signal, wherein the predetermined value range is 3 to 5 decibels (dB).
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: December 25, 2018
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Tae Hee Kim, Jae Hoon Kim, Cheon Sig Sin