Including A Satellite Patents (Class 342/352)
  • Patent number: 9998206
    Abstract: A plurality of spacecraft may be dispersed into a ring constellation or structure. Data may be wirelessly relayed between spacecraft similar to data flowing in a ring network. The ring structure minimizes inter-spacecraft velocities and tracking angle motion to allow use of fixed high-gain radio frequency (RF) antennas or medium-divergence lasers for crosslinks. Data may flow between spacecraft to be downloaded by the next spacecraft that will be passing over a ground station. This reduces data latency when a single ground station is used, and significantly reduces data latency when more than one ground station is used.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: June 12, 2018
    Assignee: THE AEROSPACE CORPORATION
    Inventor: Siegfried W. Janson
  • Patent number: 9998207
    Abstract: Systems, methods, and software described herein provide enhancements for deploying communication networks in clusters of satellite devices. In one example, a first subset of satellite devices is configured to orbit in a first orbital layer, and a second subset of satellite devices is configured to orbit in a second orbital layer. A communication network is formed among the satellite devices and is configured to selectively exchange communications among the first orbital layer and the second orbital layer based at least in part on an operational status of the communication network.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: June 12, 2018
    Assignee: Vector Launch Inc.
    Inventors: Shaun Coleman, Darren D. Garber
  • Patent number: 9991944
    Abstract: A description of a high altitude platform with multibeam coverage for aero-based terminals is provided herein. An example apparatus includes a plurality of user link antennas each configured to provide communication coverage among a plurality of aero-based terminals within a specified volume (or area) of the sky, each antenna being configured to communicate with a specified cell within the specified volume. The apparatus also includes a gateway link antenna configured to provide communication coverage to a ground-based gateway terminal. The user link antennas are configured to have differently sized apertures to maintain a similar spectral density among the cells within the specified coverage area. Such a configuration of user link antennas provides consistent Quality of Service and bandwidth for aero-based terminals (such as private and commercial aircraft) operating within the specified coverage area.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: June 5, 2018
    Assignee: Hughes Network Systems, LLC
    Inventors: Anthony Robert Noerpel, Stanley Edward Kay
  • Patent number: 9973267
    Abstract: A communication system includes a constellation of communication devices orbiting the earth. Each communication device has a corresponding orbital path or trajectory with an inclination angle of less than 90 degrees and greater than zero degrees with respect to the equator of the earth. The constellation includes a first group of communication devices orbiting at a first altitude from the earth and at a first inclination angle. The constellation also includes a second group of communication devices orbiting at a second altitude from the earth lower than the first altitude and at a second inclination angle different from the first inclination angle.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: May 15, 2018
    Assignee: Google LLC
    Inventor: Mark Krebs
  • Patent number: 9971037
    Abstract: Systems and methods are provided for monitoring carrier phase anomalies in a range finding system. A relative carrier phase between first and second antennas is predicted as a function of a relative position between the two antennas. A relative carrier phase between the first and second receivers is measured based upon at least one transmitted signal received at each of the first and second antennas. An anomaly detection metric is calculated as a difference between the measured relative carrier phase and the predicted relative carrier phase. It is then determined if an anomaly is present according to the anomaly detection metric.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: May 15, 2018
    Assignee: Northrop Grumman Systems Corporation
    Inventor: Jeffrey Dickman
  • Patent number: 9963249
    Abstract: Apparatus and methods for stationkeeping in a satellite. The satellite includes a north electric thruster and a south electric installed on a zenith side, an east chemical thruster installed on an east side, and a west chemical thruster installed on a west side. An orbit controller detects a failure of one of the electric thrusters. In response to the failure, the orbit controller controls a burn of the remaining electric thruster proximate to an orbital node. The orbit controller controls a burn of one of the chemical thrusters at 90°±5° from the burn of the remaining electric thruster, and controls a burn of the other one of the chemical thrusters at 270°±5° from the burn of the remaining electric thruster.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: May 8, 2018
    Assignee: The Boeing Company
    Inventors: Yiu-Hung Monte Ho, Jeffrey Scott Noel, Andrew Henry Giacobe
  • Patent number: 9958549
    Abstract: Methods and systems that can detect GNSS spoofing attacks and that do not require explicit or implicit knowledge of exact position or attitude and that provide hypothesis test statistics, threshold values, and probabilities of false alarm and missed detection.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: May 1, 2018
    Assignee: Cornell University
    Inventors: Mark L. Psiaki, Steven P. Powell, Brady W. O'Hanlon
  • Patent number: 9949461
    Abstract: A method to identify morbid animals housed in a feedyard having a feed bunk, where the method includes providing a plurality of animal beacons and at least one beacon reader, placing the beacon reader adjacent the feed bunk, transmitting by a first animal beacon a first signal comprising a first unique identifier for a first animal wearing the first animal beacon, wherein the first animal is housed in the feedyard, receiving by the beacon reader the first signal, and based upon the first signal, determining a proximity of the first animal to the feed bunk.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: April 24, 2018
    Assignee: TRAX RIGHT, LLC
    Inventors: John P. Frazier, Peter J. Kuzma, Stephen E. Bachman
  • Patent number: 9952307
    Abstract: A combined electro-mechanical adaptive antenna tracking system for wireless communication between transmitters and receivers moving relative to each other is described. This system enables one or more antenna transceivers on a moving object, such as a high altitude unmanned aerial vehicle (HALE UAV), to simultaneously track one or more separate antenna transceivers on the ground, such as multiple customer premises equipment. The antennas on the moving object are constructed with multiple-subsection phased arrays or may have multiple horns on one rotation axis. Adaptive tracking control logic is applied to synchronize electrical switch and/or mechanical rotation and electrical beamforming for the moving transceivers to track multiple ground transceivers. In one advantageous aspect, an off-the-shelf horn antenna can be used and rotated around only one axis, thereby eliminating the need for expensive two dimensional movement actuators such as gimbals and the need for tracking multiple ground based receivers.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: April 24, 2018
    Assignee: Facebook, Inc.
    Inventor: Hong Gan
  • Patent number: 9933528
    Abstract: A method for Real Time Kinematic satellite positioning includes receiving navigation satellite carrier signals, receiving phase correction signals from a reference station, calculating a set of integer phase ambiguities from double-differenced measurements of pseudo-range and phase, and calculating a relative position of the mobile receiver from the set of integer phase ambiguities and the double-differenced measurements of pseudo-range and phase.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: April 3, 2018
    Assignee: Swift Navigation, Inc.
    Inventors: Ian Maxwell Horn, Fergus MacPherson Noble
  • Patent number: 9933524
    Abstract: Method and apparatuses involving satellite position signals are disclosed. Based on data indicating a usage environment, parameters, for example acquisition parameters or calculation parameters, are adapted.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: April 3, 2018
    Assignee: INTEL DEUTSCHLAND GMBH
    Inventors: Markus Hammes, Andreas Schmid
  • Patent number: 9927526
    Abstract: A method for calculating a position of a receiver. The method includes determining a first position of the receiver at a first time using data from satellites and determining a second position of the receiver at a second time using the first position and data from a non-satellite sensor. The method also includes calculating the positions of the satellites at the second time and comparing, for each satellite, the calculated position with a known position at the second time.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: March 27, 2018
    Assignee: Elbit Systems of America, LLC
    Inventor: Enrique Sernik
  • Patent number: 9929850
    Abstract: A circuit arrangement includes an antenna port, a first receiving port, a second receiving port, a first transmission port, and a second transmission port. A number of 90 degree hybrids are configured to transfer an input signal into two output signals that are phase shifted relative to each other. Two quadplexers each include a first duplexer and a second duplexer. The quadplexers and the 90 degree hybrids are interconnected such that a leakage signal travelling from one of the transmission ports to one of the receiving ports destructively interferes at the receiving port.
    Type: Grant
    Filed: April 17, 2013
    Date of Patent: March 27, 2018
    Assignee: SnapTrack, Inc.
    Inventors: Juha Ellä, Edgar Schmidhammer
  • Patent number: 9910160
    Abstract: A method for detecting and removing spoofing signals may include receiving, by a navigation or communications device, a radio frequency (RF) signal and performing an anti-spoofing assessment to detect a presence of a spoofing signal associated with the RF signal. The method may additionally include generating a replica of the spoofing signal in response to the spoofing signal being detected and subtracting the replica of the spoofing signal from the RF signal to provide a residual non-spoofed signal. The method may further include decoding the residual non-spoofed signal by the navigation or communications device.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: March 6, 2018
    Assignee: The Boeing Company
    Inventors: William Preston Geren, Anthony Goodson
  • Patent number: 9898633
    Abstract: A data reading system, and associated methods of operation, for locating and tracking a position of tagged items on a conveyor system. The system includes a data reader and a conveyor system operable to transport the tagged items through a read region of the data reader. A processor, in operative communication with the data reader, obtains data from an item tag being passed through the read region at a first time, at a second time, at a subsequent third time, and so forth. Based on the readings, the processor estimates an initial position of each item tag and determines an order at which each item reaches a reference position on the conveyor system.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: February 20, 2018
    Assignee: DATALOGIC IP TECH, S.R.L.
    Inventors: Marco Bottazzi, Enrico Savioli, Federico Natali
  • Patent number: 9893799
    Abstract: A personal communications device for communications using a satellite in a satellite communications system. The personal communications device includes a location algorithm for determining the satellite location and the personal communications device location, a path algorithm for predicting an improved communication path between the satellite and the personal communications device, a position change algorithm for determining a recommended change in position of the personal communications device so as to position the personal communications device in the improved communication path.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: February 13, 2018
    Assignee: Higher Ground LLC
    Inventor: Robert S. Reis
  • Patent number: 9872327
    Abstract: An antenna system and method for managing identification, location, direction and communication with nearby wireless communication devices is provided. Various embodiments can be implemented to enhance the performance of advertising systems, location services, military systems, and social gaming.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: January 16, 2018
    Assignee: ETHERTRONICS, INC.
    Inventors: Laurent Desclos, Barry Matsumori, Rick Johnson
  • Patent number: 9857476
    Abstract: The present invention relates to a system and method using hybrid spectral compression and cross correlation signal processing of signals of opportunity, which may include Global Navigation Satellite System (GNSS) as well as other wideband energy emissions in GNSS obstructed environments. Combining spectral compression with spread spectrum cross correlation provides unique advantages for positioning and navigation applications including carrier phase observable ambiguity resolution and direct, long-code spread spectrum signal acquisition. Alternatively, the present invention also provides unique advantages for establishing the validity of navigation signals in order to counter the possibilities of electronic attack using spoofing and/or denial methods.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: January 2, 2018
    Assignee: Telecommuncation Systems, Inc.
    Inventors: Michael B. Mathews, Peter F. MacDoran
  • Patent number: 9848303
    Abstract: A method of selecting a cellular network entails determining a current location using a Global Navigation Satellite System (GNSS) receiver in a mobile device, prioritizing bands based on the current location to create a set of prioritized bands, and searching the set of prioritized bands for the cellular network. This method expedites selection of the cellular network when a mobile device is powered on or when its cellular radiofrequency transceiver is activated.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: December 19, 2017
    Assignee: BlackBerry Limited
    Inventors: Mahesh Narayanan, Jarrod Chambers, Jean-Philippe Paul Cormier
  • Patent number: 9791574
    Abstract: Methods and systems for repurposing of a global navigation satellite system receiver for receiving low-earth orbit (LEO) communication satellite timing signals may comprise receiving a medium Earth orbit (MEO) satellite signal and/or a LEO signal in a receiver of the communication device. The MEO or LEO signal may be down-converted, and a position of the communication device may be calculated utilizing the down-converted signal. The signal may be down-converted utilizing a local oscillator signal generated by a phase locked loop (PLL), which may be delta-sigma modulated via a fractional-N divider. A clock signal may be communicated to the PLL utilizing a temperature-compensated crystal oscillator. The signal may be down-converted to an intermediate frequency or down-converted directly to baseband frequencies. The signal may be processed utilizing surface acoustic wave (SAW) filters. In-phase and quadrature signals may be processed in the RF path utilizing a two-stage polyphase filter.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: October 17, 2017
    Assignee: Maxlinear, Inc.
    Inventors: Maxime Leclercq, Ioannis Spyropoulos, Nishant Kumar, Anand Anandakumar
  • Patent number: 9787339
    Abstract: An antenna RSSI meter includes a microcontroller unit for digitizing an antenna receiver voltage signal, converting the digitized antenna receiver voltage signal into a receiver signal level in accordance with a predefined antenna specification, and converting the receiver signal level into the antenna tuning signal in accordance with the predefined antenna specification. The antenna RSSI meter includes an input communication port for receiving the antenna receiver voltage signal from an antenna and providing the antenna receiver voltage signal to the microcontroller unit, The antenna RSSI meter also includes an output communication port for receiving the antenna tuning signal from the microcontroller unit and providing the antenna tuning signal to an antenna auto-aligning mechanism for adjusting position and orientation of the antenna.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: October 10, 2017
    Assignee: ZTE (USA) INC.
    Inventors: Ying Shen, Aleksandr Semenyshev, Ed Nealis, Shawn Walsh
  • Patent number: 9766337
    Abstract: An air vehicle comprises a satellite receiver having messaging capability. The receiver is configured to process a command and control (C2) message when alternative communications are required. The air vehicle further comprises avionics for taking a course of action according to instructions in a C2 message received by the satellite receiver.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: September 19, 2017
    Assignee: The Boeing Company
    Inventor: Charles B. Spinelli
  • Patent number: 9766345
    Abstract: A ground station antenna including a torus shaped reflector having multiple feed points along a focal arc in front of the reflector. The ground station antenna includes transceiver feeds having their electrical phase centers located on the focal arc and supported by a rotating feed platform. The transceiver feeds are configured to simultaneously track rising and falling satellites when the platform rotates. The ground station antenna further includes a wireless power receiver coupled to the transceiver feeds to power the transceiver feeds. The ground station antenna further includes a wireless signal interface coupled to the transceiver feeds to communicate signals with a base unit to perform subsequent processing.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: September 19, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Ernest Tadashi Ozaki, William G. Ames, Ahmad Jalali
  • Patent number: 9749035
    Abstract: A synchronization approach is provided that compensates for the large Doppler offset of the satellites in a LEO satellite system by exploiting the predictable and deterministic nature of the Doppler component, and thereby simplifies the delay and the Doppler domain uncertainty ranges that the physical layer receivers have to resolve. The compensation is based on the known ephemeris information of the LEO satellite and the known positions of the gateway (GW) and the user terminal (UT) on the ground. Utilizing the deterministic component of the LEO Doppler, the synchronization process continually tracks and compensates for the time-varying offsets between the GW and UT frame timing, frame numbering (FN), symbol timings, and Doppler-induced scaling of center frequency and the signal bandwidth.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: August 29, 2017
    Assignee: Hughes Network Systems, LLC
    Inventors: Yash Vasavada, Channasandra Ravishankar, Deepak Arur, Michael Parr
  • Patent number: 9746835
    Abstract: A radio-controlled timepiece includes: a radio wave reception unit that receives satellite waves and extracts an incoming code sequence encoded in the received satellite waves; a counter unit that counts a date/time of the radio-controlled timepiece; and a processor that: generates an expected code sequence containing at least a portion of a preamble code and a code generated on the basis of the date/time counted by the counter unit that are expected to be part of the incoming code sequence that is extracted, detects a match between the expected code sequence that has been generated and the incoming code sequence by sequentially comparing the expected code sequence with the incoming code sequence, and acquires a present date/time, as indicated by the satellite waves, in accordance with a detection timing of the match, as measured by the data/time counted by the counter unit.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: August 29, 2017
    Assignee: CASIO COMPUTER CO., LTD.
    Inventors: Takeshi Matsue, Hideo Abe, Kazuaki Abe
  • Patent number: 9742488
    Abstract: A satellite reception assembly may comprise a first module operable to demodulate a first one or more channels of a signal output by a direct broadcast satellite (DBS) low noise block downconverter (LNB). The first module may output a signal to a second module which may demodulate a second one or more channels of the signal output by the DBS LNB. The second module may be installed after the satellite reception assembly has been deployed upon a number of clients served by the satellite reception assembly reaching a threshold.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: August 22, 2017
    Assignee: Maxlinear, Inc.
    Inventors: Curtis Ling, Timothy Gallagher, Glenn Chang
  • Patent number: 9742484
    Abstract: Systems and methods are described that use the downlink and uplink frequency bands of the fixed satellite service (FSS) and direct broadcast service (DBS) systems to provide broadband access to aerial platforms including aircraft, drones, and unmanned aerial vehicles (UAVs) such as balloons. The secondary service aerial platform transmitters are configured to avoid interference into the primary satellite service receivers. The aerial platform may be able to detect and connect to the cell site with the strongest signal. The aerial platform may be able to handoff from one cell site to another. Systems and methods are described that provide broadband access to ground terminal via aerial platforms such as drones and UAVs such as balloons.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: August 22, 2017
    Assignee: UBIQOMM, INC
    Inventor: Ahmad Jalali
  • Patent number: 9689989
    Abstract: A device for detection of falsified signals in a satellite navigation system includes at least two antennas having one or more receivers for receiving navigation signals, a phase difference measuring unit for determining phase differences of the received navigation signals for each antenna, and a detection unit for detecting falsified navigation signals among the received navigation signals on the basis of the phase differences determined.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: June 27, 2017
    Assignee: Astrium GmbH
    Inventors: Hans Trautenberg, Johann Vilzmann
  • Patent number: 9689990
    Abstract: A dual coaxial NSS receiver system is disclosed. One embodiment receives first location information about a first navigation satellite system (NSS) antenna mounted on an object at a first location. In addition, second location information is received from a second NSS antenna mounted on the object in a second location different from the first location. A spatial relationship is determined between the first NSS antenna, the second NSS antenna and a portion of the object. The first location information, the second location information and the spatial relationship are then utilized to determine the spatial location of the portion of the object.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: June 27, 2017
    Assignee: Trimble Inc.
    Inventor: Kenneth Fortune
  • Patent number: 9678213
    Abstract: A data collection device carried on board a satellite and making it possible to localize a source of interference, without using neighboring satellites, comprises: a reception device able to receive the frequency on the ground of the interference; at least three antenna points arranged on the satellite so as to be able to receive a radiofrequency signal coming from the target surface; a processor able to determine the amplitude of the interference signal at the level of each of the antenna points; a connection device able to connect successively each of the antenna points to the processor.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: June 13, 2017
    Assignee: EUTELSAT S A
    Inventors: Alessandro Le Pera, Hector Fenech, Sonya Amos
  • Patent number: 9669842
    Abstract: A control apparatus is used in a vehicle that performs automatic travel control. The apparatus includes a search section which searches for an external unit, when information used for the automatic travel control is no longer available due to abnormality, the external unit providing assist information for complementing missing information that is the information no longer available due to the abnormality, an acquisition section which acquires the assist information from the external unit obtained as a result of the search of the search section, and a processing section which performs a process for performing assist travel control, which is the automatic travel control as a result of complementing the missing information with the assist information.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: June 6, 2017
    Assignee: DENSO CORPORATION
    Inventors: Masato Matsumoto, Kenji Mutou
  • Patent number: 9674657
    Abstract: Techniques for remote tracking may be realized as a method including: receiving tracking parameters comprising one or more restrictions, wherein each restriction of the one or more restrictions includes a property other than a position; monitoring a position of a client device; receiving location information for the monitored position of the client device, the location information including one or more properties other than position; and determining that the monitored position of the client device transgresses a restriction of the one or more restrictions, wherein the determination includes determining that location information of the monitored position satisfies a property of the restriction other than position.
    Type: Grant
    Filed: May 2, 2014
    Date of Patent: June 6, 2017
    Assignee: Symantec Corporation
    Inventor: Yi-Zen Lin
  • Patent number: 9658341
    Abstract: The present invention relates to a system and method using hybrid spectral compression and cross correlation signal processing of signals of opportunity, which may include Global Navigation Satellite System (GNSS) as well as other wideband energy emissions in GNSS obstructed environments. Combining spectral compression with spread spectrum cross correlation provides unique advantages for positioning and navigation applications including carrier phase observable ambiguity resolution and direct, long-code spread spectrum signal acquisition. Alternatively, the present invention also provides unique advantages for establishing the validity of navigation signals in order to counter the possibilities of electronic attack using spoofing and/or denial methods.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: May 23, 2017
    Assignee: Telecommunication Systems, Inc.
    Inventors: Michael B. Mathews, Peter F. MacDoran
  • Patent number: 9653786
    Abstract: Smaller footprint electronic devices may be contained in a wearable housing, for example in a housing forming a portion of a watch that is worn on a user's wrist. Incorporating antennas into such small footprint devices often precludes the use of anything other than short range communications with another device. Incorporating an antenna into a watch band or bracelet provides a possible avenue to improving the long range communication capabilities and consequent utility of such smaller footprint electrical devices.
    Type: Grant
    Filed: June 27, 2015
    Date of Patent: May 16, 2017
    Assignee: Intel Corporation
    Inventor: Robert Kenoun
  • Patent number: 9645242
    Abstract: Some demonstrative embodiments include devices, systems and/or methods of collaboratively correct location errors. For example, a device may include a collaborative location error corrector to collaboratively correct location errors for at least one group of two or more wireless communication devices, the location error corrector is to receive from at least a first wireless communication device of the group an error report indicating an error in an estimated location of the first wireless communication device, to determine correction information based at least on the error report from the first wireless communication device, and to provide the correction information to at least a second wireless communication device of the group.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: May 9, 2017
    Assignee: INTEL CORPORATION
    Inventors: Yaron Alpert, Haim Rochberger
  • Patent number: 9647749
    Abstract: A communication system includes a constellation of communication devices orbiting the earth. Each communication device has a corresponding orbital path or trajectory with an inclination angle of less than 90 degrees and greater than zero degrees with respect to the equator of the earth. The constellation includes a first group of communication devices orbiting at a first altitude from the earth and at a first inclination angle. The constellation also includes a second group of communication devices orbiting at a second altitude from the earth lower than the first altitude and at a second inclination angle different from the first inclination angle.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: May 9, 2017
    Assignee: Google Inc.
    Inventor: Mark Krebs
  • Patent number: 9638803
    Abstract: A method and a system for reducing time to first fix (TTFF) in a satellite navigation receiver generate a navigation data structure including three sub-frames. A first sub-frame and a second sub-frame accommodate selective ephemeris data. The third sub-frame accommodates a text message including almanac data optionally, ionospheric data, coordinated universal time (UTC) data, textual data optionally, and any combination thereof. A signal generation system (SGS) in the system selectively groups the almanac data, the ionospheric data, and the UTC data, and selectively transmits the navigation data with the almanac data or free of the almanac data in the navigation data structure to the satellite navigation receiver. The signal generation system also staggers the navigation data in each sub-frame into a first portion and a second portion for parallelly transmitting the navigation data over a first carrier frequency and a second carrier frequency in reduced time.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: May 2, 2017
    Assignee: Accord Software & Systems Pvt. Ltd.
    Inventors: Vyasaraj Guru Rao, Sashidharan Maa, Ge'rard Lachapelle
  • Patent number: 9627752
    Abstract: An RF receiving circuit unit that receives a GPS satellite signal from a GPS satellite is intermittently driven by a first driving control of intermittently driving the RF receiving circuit unit with a first intermittent driving pattern and a multistage driving control of intermittently driving the RF receiving circuit unit with a multistage intermittent driving pattern in which a driving period in the first intermittent driving pattern is set to a second intermittent driving pattern of which an intermittent cycle is shorter than that of the first intermittent driving pattern.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: April 18, 2017
    Assignee: Seiko Epson Corporation
    Inventor: Naoki Gobara
  • Patent number: 9618601
    Abstract: A method and system for estimating a direction of arrival of a target signal relative to a measuring antenna array of an earth-orbiting satellite. The direction of arrival of the target signal being estimated on the basis of measurement signals corresponding to the target signal received respectively by at least a first measuring antenna and a second measuring antenna of the measuring antenna array. Each of the measurement signals are combined with a reference signal corresponding to the target signal received by a receiving antenna of the satellite. The receiving antenna has a maximum gain greater than the respective maximum gains of the first measuring antenna and of the second measuring antenna. The direction of arrival of the target signal is estimated from the signals obtained by combining the measurement signals with the reference signal.
    Type: Grant
    Filed: February 25, 2014
    Date of Patent: April 11, 2017
    Assignee: AIRBUS DEFENCE AND SPACE SAS
    Inventors: Jean-Marc Aymes, Raphael Sanchez, Frederic Voulouzan
  • Patent number: 9596024
    Abstract: Aircrafts flying near Earth or naval vessels are used as communications towers or relays. Using techniques of ground based beam forming and wavefront multiplexing enhance the ability to coherently combine the power of the communication signals, and improve the signal-to-noise ratio. When multiple antennas or signal sources exist, a ranking system is employed to optimize performance.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: March 14, 2017
    Assignee: Spatial Digital Systems, Inc.
    Inventor: Donald C. D. Chang
  • Patent number: 9575468
    Abstract: A satellite radio signal receiver includes a receiving section and a processor. The receiving section receives a radio signal from a satellite and demodulates the signal to identify each received bit of the signal. The processor compares the identified received bit with estimated bits which are estimated to be received within a possible deviation range set for a current date and time acquired as a reception time of the received bit, so as to obtain information on comparison result in relation to a deviation from the current date and time. The processor detects the deviation which satisfies a predetermined match condition of comparison results for received bits. The processor acquires date and time information based on the detected deviation which satisfies the predetermined match condition.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: February 21, 2017
    Assignee: CASIO COMPUTER CO., LTD.
    Inventors: Takeshi Matsue, Hideo Abe
  • Patent number: 9565599
    Abstract: A modular electronic device including a master core and a plurality of communication radio modules is provided. The modular electronic device maximizes communication performance by receiving a request for network operations from a mobile operating system of the modular electronic device; polling a table to determine a capacity of each communication radio module; and assigning the network operations to a module of the communication radio modules with a highest available capacity to maximize the communication performance of the modular electronic device.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: February 7, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: James P. Gilchrist, Michael E. Gildein, Rajaram B. Krishnamurthy, Daniel Rogers, Moses J. Vaughan
  • Patent number: 9553659
    Abstract: A method and system for communication with a mobile platform is provided. An antenna system coupled to a transmitter for use in providing a communication channel to a mobile user includes a first linear transmit array of radiating horns, a second linear transmit array of radiating horns, and at least one reflector coupled to at least one of the first linear transmit array and the second linear transmit array, the at least one reflector configured to reflect illumination from the first and second linear transmit arrays to form a communication channel for the mobile user.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: January 24, 2017
    Assignee: The Boeing Company
    Inventors: Harold A. Rosen, Lisa Kuo, Stephen Floyd Sichi, Joshua Maxwell Rutheiser, Mike T. Trujillo
  • Patent number: 9544722
    Abstract: There is discussed a location system for locating the position of a mobile communications device that communicates with a communication network using wireless signals. The location system includes a receiver which detects a wireless signal transmitted between the mobile communications device and a base station forming part of the communication network, and a processing means which processes the detected wireless signal to extract identification information for the mobile communications device. The extracted identification is stored in a data store in association with data indicative of the base station. The processing means and the data store are independent from the communication network, and therefore do not affect the operation of the mobile network.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: January 10, 2017
    Assignee: REALCELL LIMITED
    Inventors: Simon Saunders, Anthony Timson
  • Patent number: 9529093
    Abstract: Systems and methods for estimating attitude using double differenced GPS carrier phase measurements are provided. An exemplary computer-implemented method includes obtaining, by one or more computing devices, an initial candidate attitude. The method includes determining, by the one or more computing devices, a plurality of expected double differenced carrier phase values based on the initial candidate attitude. The method includes inputting, by the one or more computing devices, the plurality of expected double differenced carrier phase values into a cost function. The cost function respectively compares the plurality of expected double differenced carrier phase values to a plurality of measured double differenced carrier phase values. The method includes minimizing, by the one or more computing devices, the cost function. The method includes selecting, by the one or more computing devices, a final candidate attitude associated with the minimized cost function as the attitude of the device.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: December 27, 2016
    Assignee: Google Inc.
    Inventors: Jonathan Nichols, James Brian Roseborough, Craig Lewin Robinson, Hamid Mokhtarzadeh
  • Patent number: 9519045
    Abstract: Innovative new methods in connection with lighter-than-air (LTA) free floating platforms, of facilitating legal transmitter operation, platform flight termination when appropriate, environmentally acceptable landing, and recovery of these devices are provided. The new systems and methods relate to rise rate control, geo-location from a LTA platform including landed payload and ground-based vehicle locations, and steerable recovery systems.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: December 13, 2016
    Assignee: SPACE DATA CORPORATION
    Inventors: Gerald M. Knoblach, Eric A. Frische, Bruce Alan Barkley
  • Patent number: 9519077
    Abstract: An electronic device may be provided with a touch screen display that is controlled based on information from a proximity sensor. The proximity sensor may have a light source that emits infrared light and a light detector that detects reflected infrared light. When the electronic device is in the vicinity of a user's head, the proximity sensor may produce data indicative of the presence of the user's head. Variations in proximity sensor output due to user hair color and smudges on the proximity sensor can be accommodated by using an electrical sensing mechanism in addition to the light sensing mechanism. The proximity sensor may include a pair of capacitive electrodes for generating an electric field in the vicinity of the device. The presence of a user's head can sufficiently disturb the electric field so as to produce data indicative of the presence of the user's head.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: December 13, 2016
    Assignee: Apple Inc.
    Inventors: Prashanth S. S. Holenarsipur, Anant Rai, David Lukofsky
  • Patent number: 9507025
    Abstract: A GPS positioning method for a mobile terminal, and a mobile terminal are provided. The method includes: after GPS positioning is started, acquiring a first cell identifier of a first cell in which the mobile terminal is located; acquiring, according to the first cell identifier, first latitude and longitude information corresponding to the first cell identifier from a correspondence table stored on the mobile terminal, where the correspondence table includes a cell identifier and latitude and longitude information corresponding to the cell identifier; and with reference to the first latitude and longitude information, and time information and ephemeris information that are acquired in advance, performing GPS positioning on the mobile terminal by using a GPS receiver of the mobile terminal.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: November 29, 2016
    Assignee: Huawei Device Co., Ltd.
    Inventors: Tongbo Wang, Wenfeng Yao, Gaopeng Li
  • Patent number: 9503176
    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: May 17, 2016
    Date of Patent: November 22, 2016
    Assignee: Google Inc.
    Inventors: Travis Roland Beals, Christopher Richard Uhlik
  • Patent number: 9488736
    Abstract: A method of improving position determination of a device using locally measured movement. A first position fix of a Global Navigation Satellite System (GNSS) receiver system of a device is accessed. A second position fix of the GNSS receiver system is accessed at a time subsequent to the first position fix. Locally measured device movement information is obtained from at least one sensor, that is in a known physical relationship to the device, for a time period after the first position fix and no later than the second position fix, wherein the at least one sensor comprises an image capture device. The quality of measurement of the second position fix is improved by disciplining the second position fix based on the locally measured device movement information.
    Type: Grant
    Filed: May 2, 2014
    Date of Patent: November 8, 2016
    Assignee: Trimble Navigation Limited
    Inventors: Shawn D. Weisenburger, Richard Rudow, Nicholas C. Talbot, Peter Van Wyck Loomis, James M. Janky