Including A Satellite Patents (Class 342/352)
  • Patent number: 8714458
    Abstract: Disclosed herein is a tracking system configured to track a product and/or an activity. The tracking system comprises a tracing device and a verification server. The tracing device is coupled with the verification server by means of communication means configured to allow exchange of data between the tracing device and the verification server. The tracing device is coupled with a first satellite localization receiver which is configured to receive signals from a satellite localization system, process the received signals to obtain satellite localization observables, and compute locations based on the satellite localization observables. The tracing device is configured to acquire from the first satellite localization receiver positioning data. The tracing device is further configured to provide the verification server with the positioning data and the satellite localization observable acquired from the satellite localization receiver.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: May 6, 2014
    Assignee: Telespazio S.p.A.
    Inventor: Mario Musmeci
  • Patent number: 8713324
    Abstract: System and methods provide tracking capabilities by one or a plurality of satellites for a mobile terrestrial terminal. A user requests that a satellite track a particular mobile terrestrial terminal. If the user privilege level allows for this level of control, the satellite adjusts to track the identified terminal. One method for tracking involves the use of a steerable antenna in which the antenna steers to maintain a footprint over the identified mobile terminal. Another method for tracking involves moving the satellite itself to maintain a footprint over the identified mobile terminal. The tracking functionality may utilize a closed loop tracking method.
    Type: Grant
    Filed: January 17, 2007
    Date of Patent: April 29, 2014
    Assignee: OverHorizon (Cyprus) PLC
    Inventors: Per Wahlberg, Kennet Lejnell
  • Publication number: 20140097981
    Abstract: A telecommunication satellite with geostationary orbit comprises an upper module, a lower module, and a lateral module, disposed in a storage configuration between the upper module and the lower module, and deployed to an operational configuration of the satellite in the orbit by a rotation in relation to an axis Z oriented towards the earth in the operational configuration. The lateral module comprises two substantially plane and mutually parallel main surfaces, termed dissipative surfaces, able to dissipate by radiation a quantity of heat generated by facilities of the satellite; the dissipative surfaces being, in the operational configuration, held in a manner substantially parallel to the plane of the orbit, making it possible to limit the solar flux received by the dissipative surfaces and to optimize the quantity of heat dissipated by the lateral module.
    Type: Application
    Filed: October 4, 2013
    Publication date: April 10, 2014
    Inventor: Bruno CELERIER
  • Publication number: 20130342390
    Abstract: The present invention relates to a rotation apparatus of the polarizer for a multiple-polarized satellite signals and a satellite signal receiving apparatus included with the apparatus, includes a feedhorn for receiving satellite; a low noise block down converter for processing signals received by the feedhorn; and a skew compensation apparatus, included in the low noise block down converter or feedhorn, for rotating the low noise block down converter or feedhorn to compensate skew angles in the case that the satellite signals received in the feedhorn are the linearly polarized waves, the low noise block down converter includes the rotation apparatus of the polarizer for receiving linearly polarized signals and circularly polarized signals of the satellite signals, thereby to receive and process both of linearly polarized wave and circularly polarized wave by a simple structure.
    Type: Application
    Filed: March 5, 2012
    Publication date: December 26, 2013
    Applicant: INTELLIAN TECHNOLOGIES INC.
    Inventors: Seung-Hyun Cha, Ho-Seon Lee, Jong-Hwan Cha
  • Patent number: 8600292
    Abstract: A satellite communication system designed to communicate with wireless communication devices (WCDs) by use of a mosaic pattern of signal beams uses multiple beams to augment the communication with individual WCDs. In addition to communication with a WCD through a primary beam for that WCD, adjacent beams are used, but with signals utilizing circuit parameters assigned to the primary beam. The signals from a given WCD are relayed in a backhaul, either as an aggregate signal processed by the satellite, or as backhaul communication signals to be combined or separated on the ground.
    Type: Grant
    Filed: November 2, 2006
    Date of Patent: December 3, 2013
    Assignee: QUALCOMM Incorporated
    Inventor: Ahmad Jalali
  • Publication number: 20130307721
    Abstract: There are provided a polarizer rotating device and a satellite signal receiving apparatus having the same. The satellite signal receiving apparatus includes a feedhorn that receives a satellite signal; a low noise block down converter that processes the signal received by the feedhorn; a skew compensating device that is provided at the low noise block down converter or the feedhorn and rotates the low noise block down converter or the feedhorn to compensate for a skew angle when the satellite signal received by the feedhorn is a linearly polarized wave; a polarizer that receives a linearly polarized signal and a circularly polarized signal of the satellite signal; and a polarizer rotating device that rotates the polarizer when the satellite signal received by the polarizer is a circularly polarized wave. In such a simple structure, the linearly polarized wave and the circularly polarized wave are all received to be processed.
    Type: Application
    Filed: November 28, 2011
    Publication date: November 21, 2013
    Applicant: INTELLIAN TECHNOLOGIES INC.
    Inventors: Min-Son Son, Ho-Seon Lee
  • Patent number: 8582693
    Abstract: Wireless receiver for receiving a plurality of co-existing wireless signals respectively from different positioning systems, includes an analog frontend and an analog-to-digital converting unit. The analog frontend is arranged to convert bands of the co-existing wireless signals into a plurality of corresponding intermediate bands by a local frequency and to provide an intermediate signal including the intermediate bands. The analog-to-digital converting unit is coupled to the analog frontend, and is arranged to convert the intermediate signal to a digital signal, wherein an operation band of the analog-to-digital converting unit covers the plurality of intermediate bands.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: November 12, 2013
    Assignee: Mediatek Singapore PTE. Ltd.
    Inventors: Chun-Geik Tan, Wei-Min Shu, Chi-Hsueh Wang
  • Patent number: 8577519
    Abstract: The present invention is a telemetry system, and more specifically is a rapidly deployed modular telemetry apparatus which utilizes of SDR technology and the FPGA programming capability to reduce the number of hardware components and programming required to deploy a telemetry system.
    Type: Grant
    Filed: March 20, 2012
    Date of Patent: November 5, 2013
    Assignee: The United States of America as Represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Kosta A. Varnavas, William Herbert Sims, III
  • Patent number: 8576118
    Abstract: Techniques for monitoring transmission performance of a satellite communications systems are provided, including techniques for measuring the primary contributors to the end-to-end SNR, including the uplink SNR, the downlink SNR, and the C/I for each link in the network. These individual measurements are used to estimate satellite effective isotropic radiated power (EIRP), satellite antenna gain-to-noise-temperature (G/T), and loss due to an Earth Terminal pointing error. The EIRP, satellite antenna G/T and loss due to Earth terminal pointing error may then be used to determine operating parameters for the satellite communications network that enable the network to operate more efficiently.
    Type: Grant
    Filed: January 28, 2009
    Date of Patent: November 5, 2013
    Assignee: ViaSat, Inc.
    Inventor: Mark J. Miller
  • Patent number: 8565439
    Abstract: A method is provided for detecting scrambling of a radiocommunication network. The method is applied by a radiocommunication circuit capable of being connected to the network by being synchronized on a radiocommunication channel. The method includes a final detection phase, having the following steps: detection of verification of the following final condition: there are N radiocommunication channels on which the radiocommunication circuit cannot be synchronized despite detection of a power level normally sufficient for being synchronized, where N>2; and if the final condition is verified, generation of a final scrambling signal with a probability of scrambling equal to 100%. The method also includes at least one intermediate detection phase, having the following steps: detection of verification of at least one intermediate condition; and if the at least one intermediate condition is verified, generation of an intermediate scrambling signal with a probability of scrambling of less than 100%.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: October 22, 2013
    Assignee: Sierra Wireless
    Inventors: Erwan Girard, Christophe Flechelle, Thierry Lys
  • Patent number: 8526955
    Abstract: A movement predicting method is disclosed. The method utilizes at least one phone communicating in and moving between neighboring cells of base stations to predict population movement in a prediction interval. Firstly, obtain the traffic volumes in the cells generated by the phone and the handover information generated by the phone moving between the cells in a day. Next, calculate the traffic volumes and the handover information to obtain a movement probability for the population moving between the cells and an average residence time that the population stays in the region of each cell in the different periods of the day. Finally, according to the data obtained, predict an appearance probability that the population appears in each region at the end point of the prediction interval.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: September 3, 2013
    Assignee: National Chiao Tung University
    Inventors: Yi-Bing Lin, Chien-Chun Huang-Fu
  • Publication number: 20130222179
    Abstract: A rainfall attenuation estimating apparatus calculates correlation coefficients between a rainfall rate measured at a location of a satellite earth station and rainfall rates measured at locations near the satellite earth station, determines a correlation location and a correlation time difference to be used for estimating rainfall attenuation among the plurality of nearby locations based on the rainfall rates measured at the respective nearby locations and the rainfall rate measured at the location of the satellite earth station, and calculates an amount of rainfall attenuation of the satellite earth station by using rainfall rate data corresponding to a determined correlation location and correlation time difference measured at a time.
    Type: Application
    Filed: July 25, 2012
    Publication date: August 29, 2013
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventor: Nam Ho JEONG
  • Patent number: 8520717
    Abstract: Radiolocalization receiver having a plurality of correlation taps, and including a module of cross-correlation detection in which spurious correlation terms are detected by statistical analysis of the frequencies of the candidate peaks. The system can restrict further integration to those taps whose frequency is outside the cross-interference signal, or trigger new acquisition of different space vehicles, upon detection of a cross-interference situation.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: August 27, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Joel Brenner, Angelo Genghi
  • Patent number: 8514916
    Abstract: Disclosed are embodiments for determining the length of a connecting cable between a modem and a transceiver by measuring the propagation time of a signal along the connecting cable. A cable length signal is used to adjust the gain of the modem, that ensures that the transceiver circuit operates in the correct power range for both transmitting and receiving signals.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: August 20, 2013
    Assignee: ViaSat, Inc.
    Inventor: Donald M. Bishop
  • Patent number: 8514966
    Abstract: A method for communication includes modulating data to produce a series of symbols defined in a signal space. The symbols are pulse-shaped using a given pulse shape. A signal, which includes a sequence of the pulse-shaped symbols (104A . . . 104C) transmitted at a symbol rate that is higher than a Nyquist rate defined for the given pulse shape, is transmitted to a receiver (40). Prior to pulse-shaping the symbols, Inter-Symbol Interference (ISI) in the signal is pre-compensated for by applying a lattice precoding operation to the symbols. The lattice precoding operation confines the symbols to a predefined volume (110) in the signal space and is computed independently of any feedback from the receiver.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: August 20, 2013
    Assignee: Novelsat Ltd.
    Inventors: Daniel Wajcer, Uri Beitler
  • Patent number: 8510046
    Abstract: A marine electronic device such as a chartplotter which includes a display; a location determining component; and a processing system for receiving location data from the location determining component and for causing information to be displayed by display. The processing system causes the display to display information which assists an operator in navigating and ascertaining characteristics of bodies of water, objects on nearby shores, and other vessels.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: August 13, 2013
    Assignee: Garmin Switzerland GmbH
    Inventors: Darrin W. Kabel, Darren E. Hain, Brayden S. Wilbeck, Christopher B. Bilderback
  • Publication number: 20130162466
    Abstract: A method is presented to extend a frequency lock range of a received RF signal in a satellite receiver. One step in the method includes analyzing data information of a preamble associated with the received satellite RF signal. Another step includes determining an estimated frequency value that is a function of the analyzed data information that further includes at least a portion of the frequency error formed therein. A further step includes comparing the determined estimated frequency value to a predetermined threshold value. Another step includes using the determined estimated frequency value when the determined frequency value is greater than the predetermined threshold value to operatively control tracking mode electronic circuitry disposed in the satellite receiver to attain frequency lock on the received satellite RF signal.
    Type: Application
    Filed: December 23, 2011
    Publication date: June 27, 2013
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: Roger A. MCDANELL, Glenn A. WALKER, Eric A. DIBIASO, Michael L. HIATT, JR.
  • Patent number: 8442438
    Abstract: A wireless transmitter includes a first filtering unit coupled to a first cable for outputting a first DC source transmitted on the first cable, a first power converting unit for converting the first DC source into a second DC source, a second filtering unit for eliminating noise in the second DC source, a first DC blocking unit for blocking the second DC source and outputting a second frequency modulation (FM) signal, an amplifier for amplifying the second FM signal to generate a first FM signal, and a second DC blocking unit coupled to the amplifier and the first cable, for outputting the first FM signal to the first cable, such that the first FM signal is transmitted to the air through the first cable as a transmitting antenna.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: May 14, 2013
    Assignee: Wistron NeWeb Corporation
    Inventors: Cheng-Hsiung Hsu, Chung-Wei Hsu, Cheng-Yen Wen, Chun-Chia Kuo
  • Patent number: 8406277
    Abstract: Radiolocalization receiver for a satellite radiolocalization system like GPs, Galileo or the like, including a staged correlation and accumulation unit, in which the correlation data is biased in order to be to always non-negative. Thanks to this feature, the accumulated data grow monotonically during the accumulation. Overflow rate of a first correlation stage (100, 150-153) is scaled down respect to the rate of the input data. Thus the higher correlation stages (200, 154-158) can be used in multiplex. The bit-flip rate in memories is very low, with an effective reduction of dynamic power consumption. The logic structure of the accumulator is also simplified by the invention, thus further savings in silicon space and power are possible.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: March 26, 2013
    Assignee: QUALCOMM Incorporated
    Inventor: Phil Young
  • Patent number: 8391772
    Abstract: Precision surgical jamming of a target located at a distance uses GPS to coherently focus the jamming energy transmitted from a plurality of nodes. One of the nodes is designated as a master node and the remaining nodes are designated as auxiliary nodes. Each node tracks the carrier phases of satellite signals transmitted by a plurality of GPS satellites relative to a carrier phase of a reference oscillator in the respective node. The master node provides the tracked phase measurements along with its position information to all of the auxiliary nodes. The auxiliary nodes determine the phase offset of its reference oscillator relative to the reference oscillator of the master node based on the transmitted data. The transmit phase of a jammer transmitter in each of the nodes is then aligned to the phase of the reference oscillator to transmit a coherent focused beam to a distant target.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: March 5, 2013
    Assignee: Raytheon Company
    Inventors: Paul H. Grobert, William K. Wallace
  • Patent number: 8380433
    Abstract: Embodiments of the invention provide a blending filter based on extended Kalman filter (EKF), which optimally integrates the IMU navigation data with all other satellite measurements tightly-coupled integration filter. This blending filter can be easily implemented with minor modification to the position engine of stand-alone GNSS receiver. Provided is a low-complexity tightly-coupled integration filter for sensor-assisted global navigation satellite system (GNSS) receiver. The inertial measurement unit (IMU) contains inertial sensors such as accelerometer, magnetometer, and/or gyroscopes Embodiments also include method for pedestrian dead reckoning (PDR) data conversion for ease of GNSS/PDR integration. The PDR position data is converted to user velocity measured at the time instances where GNSS position/velocity estimates are available.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: February 19, 2013
    Assignee: Texas Instruments Incorporated
    Inventors: June Chul Roh, Deric W. Waters, Srinath Hosur, Goutam Dutta
  • Patent number: 8369445
    Abstract: According to one embodiment, a method for communication includes receiving, by a receiver, a first modulated signal. The first modulated signal includes at least one error. The method also includes demodulating the first modulated signal. The demodulation includes compensating for the at least one error utilizing information related to a velocity of the receiver.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: February 5, 2013
    Assignee: Raytheon Company
    Inventor: Marion P. Hensley
  • Publication number: 20130018529
    Abstract: Systems and methods for integrate satellite communications. A network of upward facing antennas placed on top of cell phone towers is established. Each upward facing antenna has a footprint at the altitude of a particular satellite orbit. Upward facing antennas are placed on cell towers so as to establish a continuous coverage over the orbit of a satellite (s) thereby allowing continuous communication using cellular technology with the satellite(s) on orbit.
    Type: Application
    Filed: July 12, 2012
    Publication date: January 17, 2013
    Applicant: RIVERSIDE RESEARCH INSTITUTE
    Inventor: John E. PLOSCHNITZNIG
  • Publication number: 20120326921
    Abstract: The invention relates to apparatus and a method for the provision of an antenna reflector which is provided in the form of a substantially circular parabolic dish provided to receive and/or transmit signals over known frequency ranges. The reflector can be moved between storage and in-use positions by the movement of segments of the reflector manually, but more typically by drive means connected thereto. The apparatus can also be provided with alignment means which allow the reflector to be positioned to receive signals from a known satellite when at a particular known location. The invention allows the use of a reflector to be achieved quickly and efficiently in potentially hazardous geographical locations.
    Type: Application
    Filed: June 22, 2012
    Publication date: December 27, 2012
    Inventor: David Geen
  • Patent number: 8319659
    Abstract: A sensor system having a sensor module and an induction unit is provided, the sensor module having a first antenna, and the induction unit having a second and a third antenna, an induction transmission of signals being provided between the first and the second antenna, and the signals being sent and/or received electromagnetically by the third antenna.
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: November 27, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Thomas Buck, Thorsten Pannek, Gustav Klett, Marian Keck
  • Publication number: 20120286990
    Abstract: A compact mobile satellite communications system, including an integrated direct wave antenna and a low profile precision antenna positioning system, where the integrated direct wave antenna is configured to provide the minimum swept volume when steered and pointed such that it moves completely within a ten inch sphere, which provides an advantage when the system is mounted on a moving vehicle such as an aircraft, and the integrated direct wave antenna includes a refractive component as well as down conversion electronics to provide a L band signal output.
    Type: Application
    Filed: May 11, 2012
    Publication date: November 15, 2012
    Inventors: Richard B. Anderson, Matthew Flannery, Geoffrey Rochat
  • Patent number: 8265637
    Abstract: A wireless communications system may include a terrestrial network including a plurality of base stations providing communications service for radioterminals over a terrestrial network coverage area. The plurality of base stations may include interior base stations providing communications service for radioterminals in an interior portion of the terrestrial network coverage area and peripheral base stations providing communications service for radioterminals at a peripheral portion of the terrestrial network coverage area. At least one of the peripheral base stations provides transmissions directed toward an interior portion of the terrestrial network coverage area with greater power than transmissions directed away from interior portions of the terrestrial network coverage area. Related methods are also discussed.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: September 11, 2012
    Assignee: ATC Technologies, LLC
    Inventor: Peter D. Karabinis
  • Publication number: 20120200454
    Abstract: A method for protecting communications between an aircraft and a spacecraft in outer space including flying the aircraft in the earth's atmosphere at an altitude above 40,000 feet from the earth, and preferably above 50,000 feet, and transmitting a signal from the aircraft to the spacecraft having a frequency within a range of 50-70 GHz. The method includes selecting the frequency of the signal based on the altitude of the aircraft and the elevation angle between the spacecraft the aircraft.
    Type: Application
    Filed: February 3, 2011
    Publication date: August 9, 2012
    Applicant: Northrop Grumman Systems Corporation
    Inventor: Peter J. Hadinger
  • Publication number: 20120194380
    Abstract: A temperature compensating device for providing active bias for an amplifier includes a voltage source, a plurality of loads, and a current generator for generating a current for the amplifier according to voltages provided by the voltage source and the plurality of loads, wherein a first load of the plurality of loads is a thermistor utilized for keeping the current within a specified range under a plurality of ambient temperatures.
    Type: Application
    Filed: April 21, 2011
    Publication date: August 2, 2012
    Inventors: Chen-Chia Huang, Chun-Ching Wang, Cho-Hsuan Wu
  • Publication number: 20120157035
    Abstract: A position locating device comprises a position determining unit for periodically determining the position of the device and storing position data in a memory. On activation of the device, a position transmitting unit periodically transmits a terminal identifier and position data, to a base station via a satellite. A power management unit controls the periodicity of the transmission by the position transmitting means. A position determining system includes the position determining device and a base station for receiving the terminal identifier and position data and relaying the information to a first responder.
    Type: Application
    Filed: September 26, 2011
    Publication date: June 21, 2012
    Applicant: Paradigm Services Limited
    Inventors: Nigel Hope, Reece Pitts, Robert Clements
  • Publication number: 20120139780
    Abstract: A system for protecting a power unit on a spacecraft may include a ground station. The ground station may include a power unit loading estimation and monitoring module for estimating a power loading level on a power unit of the spacecraft power unit. The ground station may also include a ground station power limiter to regulate a power of a signal for transmission from the ground station to the spacecraft to prevent overloading the spacecraft power unit. The power of the signal for transmission to the spacecraft may be regulated based at least in part on an estimated power loading level on the power unit of the spacecraft.
    Type: Application
    Filed: December 7, 2010
    Publication date: June 7, 2012
    Inventors: Weizheng W. Wang, Bruce A. Tomei, Stephen F. Sichi
  • Patent number: 8193968
    Abstract: Systems and methods for detecting objects and weather in space are disclosed. A system for detecting an object in space and space weather includes at least one spacecraft, at least one radiation source, at least one detector, and a controller. The at least one radiation source and the at least one detector are coupled to the at least one spacecraft. The at least one radiation source is configured to transmit a signal. The at least one detector is configured to detect the signal. The signal may be reflected from an object in space. The controller is coupled to the spacecraft and is in communication with the plurality of detectors. The controller is programmed to calculate either a relative position of the object based or a plasma parameter in a region traversed by the signal based on the detected signal.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: June 5, 2012
    Assignee: Exelis, Inc.
    Inventors: Omid Ebrahimi Kia, Christopher Rodgers, Brian Bradford
  • Publication number: 20120119945
    Abstract: A compression method of satellite orbital data includes: calculating an estimate value of a first parameter from a predetermined calculation using either another parameter value or a first parameter in a different unit term, and replacing the first parameter value with the difference value between the estimate value and the first parameter value.
    Type: Application
    Filed: January 25, 2012
    Publication date: May 17, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Kyoichi TOMITA
  • Patent number: 8170475
    Abstract: Provided are a non geostationary satellite orbit (NGSO) communication apparatus that extends an operation time using an ancillary territory component (ATC) and reduces a number of satellites, and an ATC and an operating method thereof. The NGSO communication apparatus extends an operation time using an ATC and reduces a number of satellites from a first ATC that communicates with a mobile earth station (MES), and a second ATC that communicates with the first ATC to relay data between the MES and the satellite when the first ATC is unable to communication with the satellite revolving along an orbit.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: May 1, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Dae Sub Oh, Do-Seob Ahn, Ho Jin Lee
  • Patent number: 8150313
    Abstract: A device (D) is dedicated to transmitting and/or receiving signals representative of data in a communication satellite (SAT) having a fixed frequency bandwidth. This device (D) comprises transmission and/or reception means (MER) responsible for sending and/or receiving signals in multiple beams, and control means (MC) responsible for defining a chosen number of cells of chosen dimensions and positions, and configuring the transmission and/or reception means (MER) so as to define beams each associated with at least one of the defined cells, with a chosen carrier frequency based on the requirements of each of the cells and taking into account the frequency bandwidth available on the satellite (SAT).
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: April 3, 2012
    Assignee: Thales
    Inventors: Jean-Didier Gayrard, Eric Belis
  • Patent number: 8145234
    Abstract: A geographic cell identification (cell ID) database is updated on the fly as, for example, roaming user equipment (UE) reports its location during Assisted Global Positioning System (A-GPS) operations. The cell ID database relates network locations to corresponding geographic locations. The cell ID database is used to retrieve a corresponding geographic location in response to the network location at which the UE reports being located. If it is found that the cell ID database does not contain the network location reported by the UE, the geographic location of the UE can be estimated using information in the reported network location, such as Mobile Network Code, Mobile Country Code, Local Area Code and Cell ID. The geographic location can then be used to obtain A-GPS assistance data for the UE. Once assistance information has been provided to the UE and the UE has determined its geographic location, the cell ID database can be updated with the determined geographic location.
    Type: Grant
    Filed: September 13, 2006
    Date of Patent: March 27, 2012
    Assignee: AT&T Mobility II LLC
    Inventors: Leslie Paul Leonard, John Mark Dammrose
  • Patent number: 8090312
    Abstract: A satellite and an arrangement for placing the satellite in a retrograde orbit, i.e. inclined at approximately 180° to the equator. Multiple satellites may be used and the orbits thereof may be circular or elliptical. The invention is well-suited for an illustrative satellite inspection application. In this embodiment, the system includes one or more satellites; means disposed on each satellite for receiving electromagnetic energy from objects (e.g. satellites) within a field-of-view thereof; and an arrangement for placing the inspection satellites in a retrograde orbit. The satellites may be equally spaced in a single orbit or disposed in equally spaced orbits. The satellites may include a variety of instruments including radar, infrared, visible, etc. In a radar implementation, the satellite may include a bistatic or (with a transmitter) monostatic radar system. In the bistatic case, the signal may be transmitted from a ground-based or space based platform.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: January 3, 2012
    Assignee: Raytheon Company
    Inventor: Ian S. Robinson
  • Publication number: 20110304502
    Abstract: A satellite system for detecting radio frequency signals from space including at least two sensors, a processing unit and at least one receiver. Each sensor receives a plurality of radio frequency signals containing messages and outputs a sensor signal that is representative of the plurality of radio frequency signals. The processing unit selects a predetermined number of mathematical combinations of the sensor signals and combines the sensor signals into the predetermined number of mathematical combinations to produce a plurality of zone signals. The characteristics of each zone signal are undefined at the time the predetermined number of mathematical combinations is selected. The receiver extracts the messages contained in the zone signals.
    Type: Application
    Filed: June 9, 2010
    Publication date: December 15, 2011
    Inventors: Weiguo Chen, Arunas Gabriel Macikunas
  • Patent number: 8078141
    Abstract: A system and method provide the ability to collect, store and transmit information statements concerning satellite communication system use. The satellite system may collect billing information, such as roaming data, network use in terms of both total time and total bandwidth and functionality utilized on a user by user basis. Further, the satellite system may collect network usage information from the totality of users of a satellite system. The billing information and network usage information may be collected and stored on-board satellite(s) in a network in a data structure including a database. This information may then be collected, organized and transmitted to a variety of users in the earth segment of the system.
    Type: Grant
    Filed: January 17, 2007
    Date of Patent: December 13, 2011
    Assignee: Overhorizon (Cyprus) PLC
    Inventors: Per Wahlberg, Kennet Lejnell
  • Patent number: 8059025
    Abstract: An altimetry method comprising: providing a signal receiver (RX) on a first platform (S1) flying above a portion of the Earth surface (ES), for receiving a temporal series of signals emitted by a second flying platform (S2) and scattered by said portion of the Earth surface; and computing altimetry waveforms, indicative of an elevation profile of said portion of the Earth surface, by processing the received signals; characterized in that said step of computing altimetry waveforms comprises: cross-correlating the received signals with a plurality of locally-generated frequency-shifted replicas of the emitted signals; introducing a frequency-dependent temporal shift to the correlation waveforms in order to compensate for range delay curvature; and incoherently summing the temporally shifted correlation waveforms (CXC) corresponding to signals scattered by a same region of the Earth surface at different times during motion of said first platform.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: November 15, 2011
    Assignee: Agence Spatiale Europeenne
    Inventor: Salvatore D'Addio
  • Patent number: 8050691
    Abstract: The present invention relates to a method and an arrangement in a mobile telecommunication network for detection of a UE transmitted signal. The arrangement comprises means for detecting the signal during the time ttot, wherein said means comprises a correlator adapted for combined coherent and non-coherent correlation, wherein the length of the coherent correlation interval is L signal samples, the number of coherent correlation intervals is M and the coherent correlation results in a coherent correlation result for each of the coherent detection intervals M, and means for adding the coherent correlation results non-coherently. Further, the arrangement comprises means for selecting one of the length L of coherent detection interval and the total detection interval ttot based on at least one of the parameters cell size, UE speed and acceleration, number of participating Location Measurements Units and a desired total false alarm rate.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: November 1, 2011
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventor: Ari Kangas
  • Patent number: 8045975
    Abstract: Two satellite communications systems can use the same frequency or frequencies in geographically overlapping footprints, without creating undue interference in a given system that is caused by the same frequency signal(s) that is/are used by the other system. In particular, an aggregate Effective Isotropic Radiated Power (EIRP) of the radioterminals and/or ancillary terrestrial components of a second satellite communications system in the common footprint is sufficiently low, and/or the receive antenna gain of a first satellite communications system is sufficiently low compared to the receive antenna gain of the second satellite communications system, so as to increase an aggregate receiver noise that is seen by the first satellite system receivers by an amount that does not substantially change a Quality of Service (QoS) of the first satellite communications system.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: October 25, 2011
    Assignee: ATC Technologies, LLC
    Inventor: Peter D. Karabinis
  • Patent number: 8023887
    Abstract: The present invention concerns a telecommunication network for establishing radiofrequency links between at least one gateway and ground terminals via a multispot telecommunication satellite. The network includes a service zone composed of a plurality of cells each including a plurality of ground terminals, the said service zone being split into N sub-zones, N being an integer strictly greater than 1, each sub-zone having a capacity profile evolving in time over a given period and presenting a maximum value, the said maximum values of each of the capacities being shifted with regard to time and a multispot satellite including a transponder including amplification of the signals emitted by the gateway on the forward link and the signals emitted by the cells on the return link and a continuous power supply system of the amplifier.
    Type: Grant
    Filed: June 23, 2008
    Date of Patent: September 20, 2011
    Assignee: Eutelsat SA
    Inventors: Hector Fenech, Emmanuel Lance
  • Publication number: 20110205106
    Abstract: Embodiments herein include a method and a network node in a wireless communications network for controlling a maximum output power of the network node. The network node comprises a Global Navigation Satellite System (GNSS) receiver. The GNSS receiver receives signals from the GNSS. The method comprises determining whether a GNSS signal transmitted from the GNSS is considered detectable. If the GNSS signal is considered detectable, the method includes determining whether the GNSS signal is received directly from the GNSS or via a GNSS repeater. The method further includes selecting a power control method for controlling the maximum output power of the network node, based on at least one of the determination of whether the GNSS signal is considered detectable, and the determination of whether the GNSS signal is received directly from the GNSS or via the GNSS repeater.
    Type: Application
    Filed: December 22, 2010
    Publication date: August 25, 2011
    Inventors: Aurelian Bria, Farshid Ghasemzadeh, Muhammad Ali Kazmi, Kai Yu
  • Patent number: 8000381
    Abstract: A feedback control law steers a reference phase that tracks the phase of a received code sequence. The reference phase clocks a track-reference signal consisting of a series of correlation kernels, over which data is extracted and then summed in various combinations. The correlation kernels are designed in such a manner that errors caused by multipath are eliminated or substantially reduced. Furthermore, the areas of the correlation kernels are balanced across level-transitions of a code and non-transitions to eliminate phase biases when tracking specific satellites. Extra care must be taken to balance the correlation kernels in this manner due to a little known aspect of GPS C/A codes. Specifically, not all C/A codes have the same ratio of level-transitions to non-transitions as has been assumed in prior art.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: August 16, 2011
    Assignee: Hemisphere GPS LLC
    Inventors: Michael L. Whitehead, Steve R. Miller
  • Publication number: 20110169696
    Abstract: A low power, lightweight, collapsible and rugged antenna positioner for use in communicating with geostationary, geosynchronous and low earth orbit satellite. By collapsing, invention may be easily carried or shipped in a compact container. May be used in remote locations with simple or automated setup and orientation. Azimuth is adjusted by rotating an antenna in relation to a positioner base and elevation is adjusted by rotating an elevation motor coupled with the antenna. Manual orientation of antenna for linear polarized satellites yields lower weight and power usage. Updates ephemeris or TLE data via satellite. Algorithms used for search including Clarke Belt fallback, transponder/beacon searching switch, azimuth priority searching and tracking including uneven re-peak scheduling yield lower power usage. Orientation aid via user interface allows for smaller azimuth motor, simplifies wiring and lowers weight. Tilt compensation, bump detection and failure contingency provide robustness.
    Type: Application
    Filed: January 7, 2011
    Publication date: July 14, 2011
    Inventors: Spencer WEBB, David Martin
  • Publication number: 20110156948
    Abstract: An antenna for communicating with a satellite from a moving vehicle. The antenna comprises a transmitter for generating a transmission signal, main and sub reflectors, and a waveguide associated with the transmitter for conducting the transmission signal toward the sub reflector. The sub reflector is configured for redirecting the transmission signal toward the main reflector; the main reflector is configured for projecting the redirected transmission signal as an antenna beam toward the satellite.
    Type: Application
    Filed: March 7, 2011
    Publication date: June 30, 2011
    Applicant: Mobile Sat Ltd.
    Inventor: Zacharia BEREJIK
  • Patent number: 7970345
    Abstract: Methods of transmitting an information signal in a satellite communications system include splitting the information signal into a first signal component and a second signal component, transmitting the first signal component to a first system element of the satellite communications system, transmitting the second signal component to a second system element of the satellite communications system, combining the first signal component and the second signal component to form a combined signal, and recovering the information signal from the combined signal. Related systems and components are also disclosed.
    Type: Grant
    Filed: June 21, 2006
    Date of Patent: June 28, 2011
    Assignee: ATC Technologies, LLC
    Inventors: J. Terence Cummiskey, Peter D. Karabinis
  • Patent number: 7970412
    Abstract: An Aided Location Communication System (“ALCS”) is described that may include a geolocation server and a wireless communication device having a GPS section where the GPS receiver section is capable of being selectively switched between a standalone mode and at least one other mode for determining a geolocation of the wireless communications device. An Aided Location Communication Device (“ALCD”) is also described. The ALCD includes a position-determination section having a GPS receiver and a communication section where the position-determination section is selectively switchable between a GPS-standalone mode and at least one other mode for determining a geolocation of the ALCD.
    Type: Grant
    Filed: July 20, 2005
    Date of Patent: June 28, 2011
    Assignee: SiRF Technology, Inc.
    Inventors: Ashutosh Pande, Lionel Jacques Garin, Kanwar Chadha, Kurt Christian Schmidt, Leon Kuo-Liang Peng, Gengsheng Zhang, Nicolas Patrick Vantalon, Gregory B. Turetzky
  • Patent number: 7970411
    Abstract: An Aided Location Communication System (“ALCS”) is described that may include a geolocation server and a wireless communication device having a GPS section where the GPS receiver section is capable of being selectively switched between a standalone mode and at least one other mode for determining a geolocation of the wireless communications device. An Aided Location Communication Device (“ALCD”) is also described. The ALCD includes a position-determination section having a GPS receiver and a communication section where the position-determination section is selectively switchable between a GPS-standalone mode and at least one other mode for determining a geolocation of the ALCD.
    Type: Grant
    Filed: July 3, 2004
    Date of Patent: June 28, 2011
    Assignee: SiRF Technology, Inc.
    Inventors: Ashutosh Pande, Lionel Jacques Garin, Kanwar Chadha, Kurt Christian Schmidt, Leon Kuo-Liang Peng, Gengsheng Zhang, Nicolas Patrick Vantalon, Gregory B. Turetzky