Plural Receivers Only Patents (Class 342/465)
-
Publication number: 20150002337Abstract: Provided are architectures, systems, methods, and computer program products for real-time object locating and position determination using frequency channel diversity for transmitting and receiving position determination signals including bursts of location signals. Channelized frequency diversity of a short burst of small location signals that “hop” across multiple frequency channels is used to collectively produce a quasi-wideband position determination signal. Object tags operating with frequency channel diversity for transmitting location signals of position determination signals require low power consumption, but can still efficiently provide adequate position determination signals for reliable position determination.Type: ApplicationFiled: July 3, 2014Publication date: January 1, 2015Inventors: David S. Wisherd, James J. O'Hagan
-
Patent number: 8922431Abstract: The invention relate to a collision avoidance apparatus (100, 200, 300, 22), system (10) and method (500). The apparatus (100, 200, 300, 22) includes a UHF (Ultra High Frequency) transceiver (102) operable to send and receive UHF signals in electric field (E-field) mode, a VLF (Very Low frequency) transceiver (104) operable to send and receive VLF signals in magnetic field (H-field) mode, and a SHF (Super High Frequency) transceiver (106) operable to send and receive SHF signals in electric field (E-field) mode. The apparatus (100, 200, 300, 22) further includes a control module (110) operable to direct the operation of the respective transceivers (102, 104, 106), thereby to detect receipt of a signal via at least one of the transceivers (102, 104, 106), and determine whether or not an alert is to be issued, based on the nature of the received signal.Type: GrantFiled: April 7, 2011Date of Patent: December 30, 2014Assignee: Becker Research and Development (Proprietary) LimitedInventor: Michael Volta Bruno
-
Publication number: 20140354481Abstract: A method for locating a Cospas-Sarsat emergency beacon comprises transmitting a Cospas-Sarsat compliant transmission from an emergency beacon and receiving the transmission at a plurality of receivers wherein the plurality of receivers comprises at least one terrestrial receiver operable to receive the transmission directly from the emergency beacon. The method further comprises measuring, utilizing a processing circuit, at the at least one terrestrial receiver a frequency of arrival and time of arrival of the transmission and transmitting the frequency of arrival and the time of arrival of the transmission to a central processing terminal operable to determine the location of the emergency beacon.Type: ApplicationFiled: May 30, 2014Publication date: December 4, 2014Applicant: WS TECHNOLOGIES INC.Inventors: Kevin Conrad Holmes, William Austin Street
-
Patent number: 8896485Abstract: Method and system to guide people around urban environments indoor and outdoor, provide real time accurate update of way points information to the user navigation system and or to his cellular phone via FM-RDS according to the user location, The information will display on the existing cellular phone or Bluetooth device and interface to existing GPS navigation system.Type: GrantFiled: June 22, 2006Date of Patent: November 25, 2014Inventor: Ehud Mendelson
-
Patent number: 8884821Abstract: Communications are established and conducted between a communication and jamming detection at a vehicle and a base station. At the communication and jamming detection device, a determination is made as to when jamming of the communications between the communication and jamming detection device and the base station is occurring. When jamming is determined to be occurring, at least one location determination signal is transmitted from the communication and jamming detection device to at least one external tracking device. At the at least one external location determination device, the at least one location determination signal is received from the communication and jamming detection device. The location of the communication and jamming detection device at the vehicle is determined from the at least one location determination signal.Type: GrantFiled: December 21, 2009Date of Patent: November 11, 2014Assignee: Continental Automotive Systems, Inc.Inventors: Steve DeCabooter, James Snider, Robert F. D'Avello
-
Patent number: 8884820Abstract: Embodiments of a system and method for determining an angle-of-arrival (AOA) of signals received from a transmitting device are shown. Signals from the transmitting device are received through two or more pairs of spatially-diverse antennas. A non-inverted version of the signals received through a first antenna of a pair is injected into a first input of a surface-acoustic-wave (SAW) device. An inverted version of the signals received through a second antenna of the pair is injected into a second input of the SAW device. Signals present at tap outputs are processed to determine a time-difference-of-arrival (TDOA) between the signals received through each pair of antennas. The AOA may be calculated from the TDOAs determined from two or more pairs of antennas.Type: GrantFiled: June 22, 2010Date of Patent: November 11, 2014Assignee: Raytheon CompanyInventor: Richard A. Poisel
-
Patent number: 8878726Abstract: According to an embodiment of the present invention, a three-dimensional (3-D) energy-based emitter geolocation technique determines the geolocation of a radio frequency (RF) emitter based on energy or received signal strength (RSS) of transmitted signals. The technique may be employed with small unmanned air vehicles (UAV), and obtains reliable geolocation estimates of radio frequency (RF) emitters of interest.Type: GrantFiled: March 16, 2011Date of Patent: November 4, 2014Assignee: Exelis Inc.Inventor: Ning Hsing Lu
-
Patent number: 8866673Abstract: The system and method described herein could guide people around urban environments indoor and outdoor, provide a direct content according to the user preference/profile and navigation guidance to the content integrated into a special local base services application benefit mall store or building facility area. The content and navigation will display on the existing cellular phone as mobile application.Type: GrantFiled: October 1, 2009Date of Patent: October 21, 2014Inventor: Ehud Mendelson
-
Patent number: 8855703Abstract: A method of driving a mobile communication terminal in a cellular network, includes monitoring with a control unit of the mobile communications terminal, reception power levels between the mobile communication terminal and cellular network base stations at a predefined monitoring rate for each base station. Timing information values for a number of base stations are intermittently monitored by the control unit. Drift of the timing information values for at least two of the base stations is monitored and significant motion of the mobile communication terminal is deemed detected if at least one of the timing information values indicates a drift equal to or exceeding a given timing drift threshold. The predefined reception power level monitoring rate is reduced to a reduced reception power level monitoring rate for at least a number of the base stations as long as the motion of the mobile communication terminal is not significant.Type: GrantFiled: December 20, 2013Date of Patent: October 7, 2014Assignee: Ericsson Modems SAInventors: Arnaud Rosay, Samuel Lamazure
-
Publication number: 20140247187Abstract: A method is provided for to determining a time difference of arrival (TDOA) between a first signal and a second signal. The method includes sampling a first signal at a sub-Nyquist rate to provide a first sampled signal; sampling a second signal at the sub-Nyquist rate to provide a second sampled signal, the first and second signals representing corresponding multipath channels; cross-correlating the first and second sampled signals; and determining an estimate of the TDOA between the first and second signals based on the sampled first and second signals.Type: ApplicationFiled: August 30, 2012Publication date: September 4, 2014Applicant: AGILENT TECHNOLOGIES, INC.Inventor: Koji HARADA
-
Publication number: 20140225780Abstract: Multiple time-difference-of-arrival units, each having two or more receiver antennas can be used to determine a location of a target transmitter without synchronizing or connecting together the units. Specifically, a clock on each unit can be used to determine a difference of arrival of radio-frequency signals amongst antennas on the units. Each unit's clock can be asynchronous with the clocks on the other units. Target estimation can therefore be achieved easily with limited wiring and the problems associated with synchronization can be reduced or eliminated. The multiple time-difference-of-arrival units can be used in indoor, outdoor (or a combination thereof) applications.Type: ApplicationFiled: February 6, 2014Publication date: August 14, 2014Applicant: the State of Oregon acting by and through the State Board of Higher Education on behalf of OregoInventor: Huaping Liu
-
Patent number: 8786495Abstract: Provided are architectures, systems, methods, and computer program products for real-time object locating and position determination using frequency channel diversity for transmitting and receiving position determination signals including bursts of location signals. Channelized frequency diversity of a short burst of small location signals that “hop” across multiple frequency channels is used to collectively produce a quasi-wideband position determination signal. Object tags operating with frequency channel diversity for transmitting location signals of position determination signals require low power consumption, but can still efficiently provide adequate position determination signals for reliable position determination.Type: GrantFiled: July 14, 2010Date of Patent: July 22, 2014Assignee: Zebra Enterprise Solutions Corp.Inventors: David S. Wisherd, James J. O'Hagan
-
Patent number: 8779981Abstract: The invention provides systems and methods of locating a network device based on the time latency between a request by a user device and the receipt of the request by a plurality of satellite servers provided at different locations. Preferably three or more satellites may be employed. The request may be for an item, which may have a known file size, and which may or may not exist. Triangulation techniques may be utilized to determine the location of the device relative to the satellite servers.Type: GrantFiled: February 26, 2010Date of Patent: July 15, 2014Assignee: The 41st Parameter, Inc.Inventors: Ori Eisen, Steve Pandich, Raz Yalov
-
Patent number: 8760347Abstract: Systems and methods are provided herein that extend well-known direction finding (DF) and geolocation (GEO) concepts and approaches to a plurality of RF sensors to form a System of Systems (SoS) DF-GEO approach. The RF sensors may be collocated or spatial separated, and are able to exchange or share DF/GEO data. The SoS DF-GEO approach opportunistically leverages both on-board and off-board processing resources and DF-GEO measures for cooperative processing, situation awareness sharing, and performance optimization. The off-board processing resources and DF-GEO measures may be shared via networking. Thus, the SoS DF-GEO approach primarily bases measurements upon RSS or energy obtained from a one-antenna system or from a two-antenna system of a single RF sensor, as well as from other RF sensors via networking. By adopting the innovative SoS DF-GEO concept approach as described herein, optimized DF-GEO performance can be obtained by using the system of systems approach.Type: GrantFiled: February 23, 2010Date of Patent: June 24, 2014Assignee: Exelis Inc.Inventor: Ning Hsing Lu
-
Patent number: 8749433Abstract: A position tracking system includes a transmitter constructed and arranged to emit a electromagnetic signal and an array of at least three receiver antennae. Each of the at least three receiver antennae is constructed and arranged to receive the electromagnetic signal emitted from the transmitter. The position tracking system also includes a receiver channel disposed in electrical communication with each of the at least three receiver antennae. The receiver channel is constructed and arranged to receive the electromagnetic signal from each of the at least three receiver antennae. The position tracking system also includes a data processing component disposed in electrical communication with the receiver channel. The data processing component is constructed and arranged to calculate the position of the transmitter by comparing the electromagnetic signal received at each receiver antennae.Type: GrantFiled: April 4, 2011Date of Patent: June 10, 2014Assignee: Position Imaging, Inc.Inventor: Edward Hill
-
Publication number: 20140145882Abstract: A method for locating an interferer is provided. The method includes determining, from a time delay of arrival (TDOA) signature between signals received from the interferer at two satellites, a first curve on which the interferer lies, determining, from direction of arrival information generated using signals received from the interferer at a plurality of elements of a linear array, a second curve on which the interferer lies, and determining, based on an intersection between the first and second curves, the location of the interferer.Type: ApplicationFiled: October 8, 2012Publication date: May 29, 2014Applicant: THE BOEING COMPANYInventor: THE BOEING COMPANY
-
Patent number: 8700049Abstract: The subject matter disclosed herein relates to a system and method for reducing an initial position uncertainty of a mobile station. In one example, although claimed subject matter is not so limited, a process to improve an initial position estimate comprises identifying the locations of a serving cell and at least one other landmark proximate to a receiver and determining an initial estimate of the location of the receiver based, at least in part, on the identified locations of the serving cell and the at least one other landmark.Type: GrantFiled: April 18, 2008Date of Patent: April 15, 2014Assignee: QUALCOMM IncorporatedInventors: Marc Ische, Lalitaprasad V. Daita, Thomas K. Rowland
-
Patent number: 8669902Abstract: In an example embodiment, there is disclosed herein, an apparatus comprising an interface and location determination logic coupled with the interface. The location determination logic receives data representative of measured signal strengths for a wireless device from a plurality of receiving devices at known locations via the interface. The location determination logic determines an estimated location based on the measured signal strengths and a first transmit power for the wireless device. The location determination logic determines a revised transmit power for the wireless device based on the measured signal strengths from the plurality of devices at known locations and the estimated location. The location determination logic determines a revised estimated location based on the measured signal strengths and the revised transmit power for the wireless device.Type: GrantFiled: September 3, 2010Date of Patent: March 11, 2014Assignee: Cisco Technology, Inc.Inventors: Santosh Pandey, Brian Hart, Ilya Khasin
-
Publication number: 20140022128Abstract: In selected embodiments, a process of geolocation of a transmitter uses a receiver with an antenna array that is non-line-of-sight (NLoS) to the transmitter. A first plurality of scatterers within line-of-sight (LoS) of the array is located using multilateration based on time difference of arrival (TDoA) from the first scatterers, and applying a spatial consistency requirement. Time of emission/reflection from the first scatterers is also determined. The coordinates and timing of the first scatterers are used to locate either the transmitter or another set of scatterers, by applying multilateration to the TDoA at the first scatterers, and applying the spatial consistency requirement. The process is iteratively repeated until the transmitter is identified. The multilateration may be linearized without sacrificing precision. In each iteration, a non-singularity requirement is applied to ensure that the selected scatterers produce unambiguous results.Type: ApplicationFiled: January 10, 2013Publication date: January 23, 2014Applicant: ZIVA CORPORATIONInventor: DAVID SMITH
-
Patent number: 8630674Abstract: A method of driving a mobile communication terminal in a cellular network, includes monitoring with a control unit of the mobile communications terminal, reception power levels between the mobile communication terminal and cellular network base stations at a predefined monitoring rate for each base station. Timing information values for a number of base stations are intermittently monitored by the control unit. Drift of the timing information values for at least two of the base stations is monitored and significant motion of the mobile communication terminal is deemed detected if at least one of the timing information values indicates a drift equal to or exceeding a given timing drift threshold. The predefined reception power level monitoring rate is reduced to a reduced reception power level monitoring rate for at least a number of the base stations as long as the motion of the mobile communication terminal is not significant.Type: GrantFiled: June 20, 2008Date of Patent: January 14, 2014Assignee: ST-Ericsson SAInventors: Arnaud Rosay, Samuel Lamazure
-
Patent number: 8626548Abstract: Systems, methods, and machine-readable media are disclosed to assign one or more tasks to a plurality of warehouse employees. In one embodiment, a method is provided which comprises receiving an order for an item stored in a warehouse. A location of the item in the warehouse can be determined. A current location of each of the warehouse employees can be determined based on a strength of a signal from a wireless device assigned to each of the warehouse employees. The signal can be detected by at least two wireless access points at different location in the warehouse. At least one of the warehouse employees can be selected to fill the order based on the current location of each of the warehouse employees and the locations of the item.Type: GrantFiled: September 19, 2005Date of Patent: January 7, 2014Assignee: Oracle International CorporationInventor: Surilkumar Patel
-
Patent number: 8588814Abstract: A first mobile device requests a second mobile device to navigate to a destination communicated to the second mobile device by the first mobile device, wherein at least the second mobile device, if not both the first and the second mobile devices, is GPS enabled and is capable of navigation. In one scenario, a first user of the first mobile device requests the second device (or the user of the second device) to send a notification when the second user has reached a certain destination or is in the vicinity of a certain location where the first user and the first mobile device are currently located.Type: GrantFiled: February 5, 2008Date of Patent: November 19, 2013Inventor: Madhavi Jayanthi
-
Publication number: 20130293423Abstract: Embodiments of the present invention include a method of determining a location of a mobile device. The method comprises transmitting a signal between a plurality of known locations and receiving signal at device of unknown location such as a mobile device. The signal may include multiple tones having different frequencies and resulting in sets of residual phase differences. The location of the mobile device may be determined using the known locations and the frequency and phase differences between the transmitted tones. In one embodiment, OFDM signals may be used between an access point and mobile device, for example, to determine the location of the mobile device.Type: ApplicationFiled: April 9, 2013Publication date: November 7, 2013Inventor: Mehran Moshfeghi
-
Patent number: 8576123Abstract: A method of and system for vessel authentication and location validation. The method includes detecting a radio transmission from a target vessel in a vessel control area; determining a time and date of the radio transmission; generating a triangulated geographical location of the radio transmission; extracting a maritime mobile service identity from the radio transmission; extracting from the radio transmission a frequency, a power level and a waveform of the radio transmission; and authenticating or not authenticating the target vessel based on the triangulated geographical location and one or more of the frequency of the radio transmission, the power level of the radio transmission and the waveform of the radio transmission.Type: GrantFiled: June 29, 2010Date of Patent: November 5, 2013Assignee: International Business Machines CorporationInventor: Hyman D. Chantz
-
Patent number: 8570150Abstract: A sensing system includes integrated sensor locating capability. Sensors can transmit spread spectrum encoded data pulses which are received at mobile nodes. Based on time of arrival information and known locations of the mobile nodes, locations of the sensors can be determined.Type: GrantFiled: January 7, 2009Date of Patent: October 29, 2013Inventors: Doug Bowen, Thomas R. Giallorenzi, Matt Lake, Sam Kingston
-
Patent number: 8548177Abstract: Methods and systems are provided herein for signal source tracking. A signal emitted over time from a moving source is a collection of small sub-signals that were emitted by the source at different positions along its path. If the source is traveling at a slower speed than the signal, the sub-signals will arrive at a given sensor in the same order that they were released. By identifying the locations and times of the releases of several of these sub-signals, the path and velocity of the moving source can be estimated.Type: GrantFiled: October 26, 2010Date of Patent: October 1, 2013Assignee: University of Alaska FairbanksInventors: Kenneth M. Arnoult, Jr., Curt A. L. Szuberla, John V. Olson
-
Patent number: 8525725Abstract: The present disclosure describes a method and system for detecting and determining the position of a target or intruder using a plurality of sensors positioned throughout a secured perimeter and a single antenna. The system of the present disclosure detects and determines the position of a target by first analyzing the return signal strength values of each of the sensors. Next, Zvalues for each of the sensors are calculated. Based on the Zvalues, certain sensors are selected to compute a signal strength center-of-mass location, which is then used to determine the position of the target.Type: GrantFiled: March 8, 2011Date of Patent: September 3, 2013Assignee: Lockheed Martin CorporationInventors: Vibeke Libby, Troy E. Wenski, Allen R. Lorenz
-
Publication number: 20130207845Abstract: A method and an apparatus for determining the position and orientation of a mobile transmitter that has at least two linearly polarized antennas arranged at a predefined angle to one another. A plurality of receivers, which can be synchronized with the mobile transmitter and of which the position is known, each receive transmitter signals of predefined carrier frequency via a circularly polarized antenna. A field-theoretical model of the transmission path between the mobile transmitter and receivers is set up and defines the carrier phase measured values, the field-theoretical model is implemented in a Kalman filter, and the receiver signals are evaluated in terms of carrier phase measured values and/or time of arrival values. The position and orientation of the mobile transmitter are determined in the Kalman filter with use of the field-theoretical model and the carrier phase measured values and/or time of arrival values established from the receiver signals.Type: ApplicationFiled: July 8, 2011Publication date: August 15, 2013Inventors: Andreas Eidloth, Jörn Thielecke
-
Patent number: 8508411Abstract: A method and system for positioning mobile units using angle measurements taken by neighboring mobile units is disclosed. A selected mobile unit and mobile units in the vicinity of the selected mobile unit are selectively instructed to measure and report information related to the position of the selected mobile unit. The reported information is used to compute a position of the selected mobile unit.Type: GrantFiled: May 27, 2011Date of Patent: August 13, 2013Assignee: InterDigital Technology CorporationInventor: Paul Marinier
-
Patent number: 8489039Abstract: Techniques are provided to enable computation of beamforming weights for beamforming MIMO wireless communication between first and second wireless communication devices. At the first device comprising a first plurality of antennas, signals are received that are wirelessly transmitted from a different one of a second plurality of antennas of the second device during a corresponding one of a plurality of time slots. The first device computes beamforming weights from the received signals. When signals are to be transmitted from the first device to the second device, the first device applies the beamforming weights to signals to be transmitted from the first plurality of antennas of the first device to the second plurality of antennas of the second device.Type: GrantFiled: September 23, 2008Date of Patent: July 16, 2013Assignee: Cisco Technology, Inc.Inventors: Li Guo, Hang Jin
-
Patent number: 8456281Abstract: The present invention provides a non-contact IC medium communication device (1) capable of detecting a non-contact IC medium (25) in a desired area with a simple configuration, by obtaining, from each of separate read areas, identification information of the non-contact IC medium that exists within the read area and a signal level of a reception signal received from the non-contact IC medium, the identification information and the signal level being associated with each other, performing difference operation or division with respect to respective signal levels of reception signals from the separate read areas, for each of the identification information, to obtain a composite signal level, and extracting the identification information whose composite signal level falls within a predetermined threshold range. The present invention further provides a method thereof, a program thereof, and a computer-readable storage medium storing the program.Type: GrantFiled: December 3, 2008Date of Patent: June 4, 2013Assignee: Omron CorporationInventor: Hidekatsu Nogami
-
Patent number: 8456362Abstract: There is provided a receiving apparatus including a plurality of receiving antennas, each of which receives a radio signal in which sub-carriers of different frequencies are multiplexed, a phase calculation unit that calculates a phase difference of each radio signal received by the plurality of receiving antennas from that of a reference signal for each of the sub-carriers contained in the radio signals, and a path difference calculation unit that calculates a path difference, which is a difference of distances from a transmitting antenna from which the radio signals are transmitted to any two receiving antennas of the plurality of receiving antennas, based on the phase difference calculated by the phase calculation unit.Type: GrantFiled: July 7, 2009Date of Patent: June 4, 2013Assignee: Sony CorporationInventors: Seiichi Izumi, Hiroaki Takano, Masanori Sato, Hiroyuki Fukada
-
Patent number: 8446321Abstract: This invention builds on previous industry techniques to correlate data from a variety of sources for the purposes of tracking and identifying aircraft, vehicles, and marine vessels in real time over a variety of different areas including oceans and mountainous terrain. Passive broadband tracking of aircraft emitters, and electronic fingerprinting of emitters, correlated with audio, video, infrared, primary radar and other information is employed to provide a comprehensive assessment of an aircraft's position, track and identification for a variety of applications including homeland security and search and rescue.Type: GrantFiled: January 3, 2007Date of Patent: May 21, 2013Assignee: Omnipol A.S.Inventor: Alexander E. Smith
-
Patent number: 8432253Abstract: Active RFID technologies are used to tag assets and people within buildings or open areas, such as parking lots or military bases; and to identify, preferably within a few meters, the real-time location (RTL) of the tag, i.e. to create a real-time location system, known as an RTLS. A novel and complex algorithm is provided that combines signal strength computations with factors that incorporate physical realities, such as walls and floors, to determine a tag's real-time location more accurately.Type: GrantFiled: December 18, 2008Date of Patent: April 30, 2013Assignee: Al-Qemmah Letechnologia Al-Ma'Loumat Co. (SIMTIX)Inventors: Robert Ainsbury, Immad Adawiya, Khalid Omar
-
Patent number: 8428878Abstract: A lightning strike simulation apparatus includes a storage device for storing lightning strike data, a setting unit for setting a simulation target in a simulation space, a downward leader advancing unit for advancing a downward leader from a lightning strike start position set by the setting unit, an upward leader advancing unit for advancing upward leaders from lightning strike-receiving candidate points set in the simulation space when a distance between a leading edge of the downward leader and a reference point is within a first threshold value, and a lightning strike point determination unit for, when a distance between a leading edge of the downward leader and a leading edge of any one of the upward leaders is within a second threshold value, determining that the lightning strike-receiving candidate point corresponding to the any one of the upward leaders is a lightning strike point.Type: GrantFiled: July 16, 2008Date of Patent: April 23, 2013Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Takehiro Naka, Tsuyoshi Wakasa, Shinji Arinaga
-
Patent number: 8412457Abstract: A method and apparatus are provided for setting a desired destination in a navigation terminal. A position information message is received. Position coordinates corresponding to the position information included in the position information message are set as the position coordinates of a desired destination related to a certain route.Type: GrantFiled: July 17, 2012Date of Patent: April 2, 2013Assignee: Samsung Electronics Co., LtdInventor: Dong-Jun Lee
-
Patent number: 8384595Abstract: In a wireless location system configured to use a baseline correlation method, an iterative approach to increasing location accuracy is disclosed. The quality of received signals is ordered from highest to lowest and used to calculate an initial location. The initial location is modified using the lower quality signals as constrained by the time and frequency deviation from the initial location and velocity estimate.Type: GrantFiled: December 16, 2010Date of Patent: February 26, 2013Assignee: TruePosition, Inc.Inventors: Rashidus S Mia, Robert J Anderson, Pete A Boyer
-
Publication number: 20120326930Abstract: Devices, systems, and methods are disclosed which relate to a network of RFID readers which detect a location of an RFID transmitter coupled to a portable device. The network of RFID readers transmits the location to a user. The RFID transmitter couples to any personal device and broadcasts a unique ID. The nearest RFID reader(s) receive the unique ID and alert a server in communication with the network of RFID readers. The server calculates the distance of the RFID transmitter from each RFID reader receiving the unique ID. The server triangulates the location of the RFID transmitter when three or more RFID readers are receiving the unique ID. The server then securely transmits the location of the RFID transmitter to the user of the portable device. The user receives the transmission through a secure receiver.Type: ApplicationFiled: September 8, 2012Publication date: December 27, 2012Inventor: William A. O'Hern
-
Publication number: 20120293373Abstract: Provided is an RTLS system using TDOA, the RTLS system tracking, by a positioning unit, a position of a transmitter based on a position signal transmitted by the transmitter, the system comprising a plurality of receivers receiving the position signal from the transmitter, and a gateway calculating a time difference of position signal arriving at the plurality of receivers from the transmitter and providing the time difference to the positioning unit.Type: ApplicationFiled: May 7, 2012Publication date: November 22, 2012Applicant: LSIS CO., LTD.Inventor: Chang Sung YOU
-
Patent number: 8314736Abstract: Some embodiments use scanning devices to characterize radio signals received at a number of locations within a geographical area of interest. The signal characteristics along with the location information associated with the characteristics are stored in a centralized reference database. A mobile device characterizes signals it receives at a certain location and compares the characteristics with the signal characteristics stored in the reference database to obtain accurate location information of the certain location.Type: GrantFiled: August 6, 2010Date of Patent: November 20, 2012Assignee: Golba LLCInventor: Mehran Moshfeghi
-
Patent number: 8315632Abstract: Position determination assisting data is provided for performing position determinations based on this assisting data. The position determination assisting data comprises area definitions, each of which being related at least to a respective cell relation configuration. The cell relation configuration is determined at least by cell-IDs of cells fulfilling a specific radio condition criterion when received. Preferably, the cell relation configuration is also dependent on relative radio conditions between different cells and/or transmission mode. The area definitions are in particular example embodiments polygons, which preferably are re-calculated successively, automatically and on-line. The recalculations are based on high-precision position measurements of opportunity, clustered at least with respect to prevailing cell relation configuration for that user equipment performing the high-precision position measurements. Preferably, the area definitions are calculated with a predefined confidence level.Type: GrantFiled: October 7, 2005Date of Patent: November 20, 2012Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventor: Torbjörn Wigren
-
Patent number: 8294616Abstract: The location of a land-based radio frequency (RF) emitter is determined from an airborne platform. RF signaling is received from the RF emitter via first and second antennas. In response to the received RF signaling, signal samples for both antennas are produced and processed to determine the location of the RF emitter.Type: GrantFiled: September 30, 2010Date of Patent: October 23, 2012Assignee: Sandia CorporationInventors: Richard C. Ormesher, Douglas L. Bickel
-
Patent number: 8274432Abstract: A respective electromagnetic parameter and spatial disposition of an unknown number of signal sources in a surveillance space simultaneously bombarded by multiple signals are determined by receiving multiple signals at each of a plurality of widebeam, wideband antennas equally spaced apart in a linear array. Respective antenna signals are simultaneously sampled to generate a two-dimensional array of values. A two-dimensional Fourier transform is computed whose peaks satisfy one or more predetermined criteria, each peak being indicative of a signal source in the surveillance space, whereby the location of the peak in the Fourier transform Fjk indicates the frequency and the azimuth of the respective signal source and the amplitude of the peak indicates the amplitude of the signal source.Type: GrantFiled: August 18, 2011Date of Patent: September 25, 2012Assignee: Elta Systems Ltd.Inventor: Moshe Frieaizen
-
Patent number: 8264409Abstract: An electromagnetic radiation source locating system including an electromagnetic radiation sensor including an antenna configured to detect a radiant energy transmission. A position detector is in communication with the controller and is configured to detect the position of the antenna relative to a reference coordinate system, while an orientation sensor is in communication with the controller and is configured to detect the orientation of the antenna and provide an orientation signal to the controller. A range sensor is configured to detect the distance to an aligned object in the path of a directional vector and provide a distance signal indicative thereof to the controller. An aerial vehicle may be in communication with the controller and configured to drop a marker for guiding navigators to the source of the radiant energy transmission.Type: GrantFiled: January 30, 2009Date of Patent: September 11, 2012Assignee: The United States of America as represented by the Secretary of the NavyInventor: Gerald F. Miller
-
Patent number: 8253627Abstract: Apparatus to determine the position of a user terminal, the apparatus having corresponding methods and computer-readable media, comprises: a receiver to receive, at the user terminal, a wireless NRSC-5 digital radio signal; and a pseudorange module to determine a pseudorange between the receiver and a transmitter of the NRSC-5 digital radio signal based on the NRSC-5 digital radio signal; wherein the position module determines the position of the user terminal based on the pseudorange and a location of the transmitter.Type: GrantFiled: February 15, 2010Date of Patent: August 28, 2012Inventor: David Burgess
-
Patent number: 8249808Abstract: Provided is a navigation system including method of setting a destination in a navigation terminal, which includes receiving a position information message; and setting position coordinates corresponding to position information included in the position information message as position coordinates of a destination related to a certain route.Type: GrantFiled: February 22, 2007Date of Patent: August 21, 2012Assignee: Samsung Electronics Co., LtdInventor: Dong-Jun Lee
-
Patent number: 8232913Abstract: A multilateration system and method includes a plurality of receiver stations for receiving signals from an aircraft, and a controller that derives the position of the aircraft by applying a multilateration process to outputs from the receiver stations. For this purpose, the controller determines the altitude of the aircraft and selects a multilateration process that is to be used for position determination, based on the determined altitude.Type: GrantFiled: February 7, 2012Date of Patent: July 31, 2012Assignee: Roke Manor Research LimitedInventor: Robert John Weedon
-
Patent number: 8229091Abstract: A method is disclosed that includes receiving a selection of an interactive voice response (IVR) option. The method also includes receiving, at an IVR system, a first spoken message. The first spoken message is translated, at a translator, into a short message service (SMS) text message.Type: GrantFiled: April 9, 2009Date of Patent: July 24, 2012Assignee: AT&T Intellectual Property I, L.P.Inventor: John P. Romeo
-
Patent number: 8208942Abstract: A method for clustering position determinations is used for providing position determination assisting data in a cellular communications network. The method comprises obtaining (209) a main cluster of points, which are results of high-precision position determinations. The method further comprises separating out (220) of at least two subclusters. The points of the subclusters have a local density of points which is above a predetermined local density threshold. A method for providing position determination assisting data in a cellular communications network comprising the clustering of position determinations is also presented as well as an arrangement for providing position determination assisting data in a cellular communications network, a node of a cellular communications network, a cellular communications network and a computer readable medium comprising position determination assisting data are disclosed.Type: GrantFiled: October 30, 2006Date of Patent: June 26, 2012Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventor: Torbjorn Wigren
-
Patent number: RE45061Abstract: Communication between a remote locator and a transponder is used to determine the relative position of the transponder. The transponder and locator each include a transmitter and a receiver. The locator transmits an inquiry in the form of a relatively powerful cyclically encoded signal with repetitive elements, uniquely associated with a target transponder. Periodically, each transponder correlates its coded ID against a possible inquiry signal, determining frequency, phase and framing in the process. Upon a match, the transponder transmits a synthesized response coherent with the received signal. The locator integrates multiple cyclical response elements, allowing low-power transmissions from the transponder. The locator correlates the integrated response, determines round-trip Doppler shift, time-of-flight, and then computes the distance and angle to the transponder. The transponder can be wearable, bionically implanted, or attached to, or embedded in, some object.Type: GrantFiled: January 11, 2012Date of Patent: August 5, 2014Assignee: Santa Monica Semiconductor, LLCInventor: Lawrence J. Karr