With Radio Voice Communication Patents (Class 342/57)
  • Patent number: 10305611
    Abstract: An apparatus is disclosed for proximity detection using a hybrid-transceiver. In an example aspect, the apparatus includes a hybrid transceiver coupled to a first antenna and a second antenna. The hybrid transceiver is configured to generate, in a digital domain, a digital baseband radar signal. The hybrid transceiver is also configured to transmit, via the first antenna, a radio-frequency transmit signal that is derived from the digital baseband radar signal. Via the second antenna, the hybrid transceiver is configured to receive a radio-frequency receive signal, which includes a portion of the radio-frequency transmit signal that is reflected by an object. In an analog domain, the hybrid transceiver is configured to generate an analog receive signal that includes a beat frequency, which is indicative of a frequency offset between the radio-frequency transmit signal and the radio-frequency receive signal. The analog receive signal is derived from the radio-frequency receive signal.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: May 28, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Roberto Rimini, Udara Fernando, Shahin Mehdizad Taleie
  • Patent number: 10168418
    Abstract: A computer-implemented method and system for controlling sensor data acquisition including establishing an operable connection for computer communication between a first vehicle and remote vehicles within a communication range. The method includes receiving capability data corresponding to the capabilities of sensors of the one or more remote vehicles, including a sensor actuation time slot. The method includes selecting a set of N remote vehicles based on the capability data. The set of N remote vehicles consists remote vehicles closest to the first vehicle, and the sensor actuation time slot of each of the remote vehicles in the set of N remote vehicles are different. The method includes dividing a clock cycle into a plurality of time slots, and controlling, according to the plurality of time slots and the sensor actuation time slot, sensor actuation.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: January 1, 2019
    Assignee: Honda Motor Co., Ltd.
    Inventors: Samir K. Al-Stouhi, Paritosh Kelkar, Hasan Tafish
  • Patent number: 9578540
    Abstract: Technology for wireless transmission of messages to remote receiving devices is disclosed. The technology includes receiving a message for transmission, determining transmission parameters for transmission of the message, and transmitting the message to a remote receiving device according to the determined transmission parameters. The technology may also include encoding the message to effect message latency and may be employed for message transmission via the ionosphere or other atmospheric layer at frequencies in the Medium Frequency (MF), High Frequency (HF), or Very High Frequency (VHF) spectrum. Further, the disclosed technology may be employed for message transmission to effect low latency financial transaction execution, such as high speed high frequency trading.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: February 21, 2017
    Assignee: SpectraNet, Inc.
    Inventor: Jeffrey C. Adams
  • Patent number: 9565684
    Abstract: Systems and methods are described herein for avoiding interfering with 5GHZ frequency band signals with a peer-to-peer wireless local area network connection. A peer-to-peer client is notified of radar signals in proximity to the client over a master-to-client wireless local area connection with an enterprise access point. If the notification includes a non-interfering radar channel, the peer-to-peer client resets the peer-to-peer channel to the non-interfering radar channel. If the notification does not provide a non-interfering radar channel, the peer-to-peer client resets the peer-to-peer network connection to a non-dynamic frequency selection channel and may disconnect the Wi-Fi connection with the enterprise access point.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: February 7, 2017
    Assignee: Intel Corporation
    Inventors: Omri Barkay, Omer Ben-Shalom
  • Patent number: 9002347
    Abstract: A radar/laser emission detector is augmented with a cellular communications capability to provide the capability to share emission detection information amongst drivers to give other drivers even more advanced warning. A network of a plurality of cellular augmented radar/laser emission detector devices may be formed, each having the capability to source the location of radar or laser emission detections to others requesting access to such information, and each being warned when within a proximity of a recent radar or laser emission detection reported by at least one of the plurality of hybrid radar/laser detector devices. A local area, mobile area wireless network (MAWN) is formed in a cellular network to share radar/laser detection information among drivers. Mobile Position Centers (MPCs) are provided in ANSI-41 networks and Gateway Mobile Location Centers (GMLCs) (GSM networks), to determine other members that are proximate to a device that is detecting radar emission.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: April 7, 2015
    Assignee: TeleCommunication Systems, Inc.
    Inventors: Lance Douglas Pitt, Daniel D. DeLapp, Sarah Jean Lawrence
  • Patent number: 8948929
    Abstract: The disclosure is related to a method of managing and controlling vehicles for safe driving. In the method, at least one virtual zone may be defined based on information collected from a plurality of vehicles in motion and related servers in real time. Vehicles may be grouped into at least one vehicle groups according to a predetermined similarity condition based on the collected information. An abnormal driving pattern model may be generated based on a driving pattern of each vehicle in each vehicle group. At least one area of a virtual zone may be designated as a spot when at least one vehicle having a driving pattern matched with the abnormal driving pattern model in the at least one area. Safe driving information may be transmitted to at least one vehicle having driving patterns matched with attributes of the spot among vehicles entering each virtual zone.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: February 3, 2015
    Assignee: KT Corporation
    Inventors: Young-Sam Chun, Han-Lim Kim, Jin-Woo Baek, Jae-Won Choi
  • Publication number: 20140199950
    Abstract: A passively re-radiating cell phone sleeve assembly capable of receiving a nested cell phone provides signal boosting capabilities and provides a radar enablement. Signal boosting is enabled by use of an additional antenna, a pass-through repeater, dual antenna isolation capability and other features.
    Type: Application
    Filed: March 17, 2014
    Publication date: July 17, 2014
    Applicant: MoJoose, Inc.
    Inventors: Daniel R. Ash, JR., Daniel R. Ash, SR., Joseph Storniolo, Jeremy Monroe
  • Patent number: 8742976
    Abstract: A method and apparatus for providing power management for a device including a radar unit and an ad hoc network node are presented. The present invention involves various individual components of the device being turned on and off in various sequences in order to minimize power draw of the device. This involves starting individual components ahead of when they are required so they are fully functional when needed.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: June 3, 2014
    Assignee: Raytheon BBN Technologies Corp.
    Inventors: Steven V. Weeks, Paul Dryer, Dale G. Robertson
  • Patent number: 8730088
    Abstract: Techniques disclosed herein include systems and methods for accurately scheduling radar and radio events against each other. Specifically, a scheduling manager can schedule radar events based on scheduled radio events (wireless network communication events). A given radio schedule for a compact radar sensor can be a relatively complicated schedule, especially when the compact radar sensor operates as part of an ad hoc network. In certain embodiments, the scheduling manager identifies a radio transmission schedule of neighboring radar nodes or compact radar sensor units. Such a radio transmission schedule of neighboring nodes can include information on when neighboring nodes will be receiving or transmitting data. The scheduling manager then schedules radar events to be executed by the radar device at available times, or at times that do not overlap with scheduled radio events.
    Type: Grant
    Filed: January 5, 2011
    Date of Patent: May 20, 2014
    Assignee: Raytheon BBN Technologies Corp.
    Inventors: Stephen D. Milligan, Jason Redi, Jonathan Fisher, Daniel Sumorok, Steven W. Weeks
  • Patent number: 8660219
    Abstract: A radar detector determines whether an input signal is an orthogonally frequency division multiplexed (OFDM) signal or a radar signal by applying at least first and second bandpass filtering operations having substantially non-overlapping passbands to the input signal, each filtering operation having a passband of width substantially less than a relatively large instantaneous bandwidth characteristic of an OFDM signal and substantially greater than a relatively small instantaneous bandwidth characteristic of a radar signal. The detector multiplies power levels of output signals of the first and second filtering operations to form a power product signal and compares the power level of the power product signal with a threshold level and providing an indicating signal in a first state if the power level of the power product signal exceeds the threshold level and otherwise providing said indicating signal in a second state.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: February 25, 2014
    Assignee: Summit Semiconductor LLC
    Inventor: Kenneth A. Boehlke
  • Patent number: 8638253
    Abstract: Embodiments disclosed herein include a radar sensor device for detecting movement and velocity of external objects within or around a particular radar sensor field. The radar sensor field can use an array or cluster or radar sensors, including compact (portable by hand) radar sensors that function as network nodes within a wireless, low-energy ad hoc network. Radar sensor devices can use vibration as a means of communicating power status, functionality, and progress of installation of a particular radar unit. Such a vibration can be executed at a particular predefined cadence, rhythm, or other pattern, to indicate a powered-on state, active network connectivity, and other device states. Such a radar sensor device provides silent and non-visible status indication for quick and efficient deployment.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: January 28, 2014
    Assignee: BBN Technologies Corp.
    Inventor: Paul Dryer
  • Patent number: 8515414
    Abstract: A radar/laser emission detector is augmented with a cellular communications capability to provide the capability to share emission detection information amongst drivers to give other drivers even more advanced warning. A network of a plurality of cellular augmented radar/laser emission detector devices may be formed, each having the capability to source the location of radar or laser emission detections to others requesting access to such information, and each being warned when within a proximity of a recent radar or laser emission detection reported by at least one of the plurality of hybrid radar/laser detector devices. A local area, mobile area wireless network (MAWN) is formed in a cellular network to share radar/laser detection information among drivers. Mobile Position Centers (MPCs) are provided in ANSI-41 networks and Gateway Mobile Location Centers (GMLCs) (GSM networks), to determine other members that are proximate to a device that is detecting radar emission.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: August 20, 2013
    Assignee: TeleCommunication Systems, Inc.
    Inventors: Lance Douglas Pitt, Daniel D. DeLapp, Sarah Jean Lawrence
  • Patent number: 8368580
    Abstract: A tactical electronic counter measure system comprising a first retro-directional transceiver sub-system, receiving signals at a first frequency band, and first retro-directional transceiver re-transmitting a signal at least substantially toward the direction from which the sources signal was received, and first retro-directional transceiver sub-system including a plurality of blade antennas and a controller, coupled with and first retro-directional transceiver, and controller controlling the activity of and first retro-directional transceiver sub-system, and controller further managing the missions of and first retro-directional transceiver sub-system.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: February 5, 2013
    Assignee: Elbit Systems EW and Sigint—Elisra Ltd.
    Inventors: Reuel Manela, Arye Raybee, Eran Kanter, David Blank
  • Patent number: 8248294
    Abstract: Methods of protecting location privacy of air traffic communications from unauthorized monitoring of aircraft locations in an uncontrolled airspace include designating a bounded region of uncontrolled airspace; ceasing transmission of a traffic beacon by each aircraft of a plurality of aircraft upon the aircraft entering the bounded region; and updating a unique identifier associated with each of the aircraft while the aircraft is traversing the bounded region.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: August 21, 2012
    Assignee: The Boeing Company
    Inventors: Radhakrishna G. Sampigethaya, Radha Poovendran
  • Patent number: 8242952
    Abstract: Presented is a system and method for eliminating spurious data in radar cross section (RCS) data. The system and method receives RCS data, and determines an expected number of scattering centers for an object of interest in said RCS data. The RCS data is processed to remove a plurality of frequency components in said RCS data based at least in part upon said expected number of scattering centers, and the RCS data is reconstructed without said plurality of frequency components to produce a reconstructed RCS data for the object of interest. In an embodiment, the TLS-Prony transform is used to transform the RCS data into a set of damped frequency components and coefficients, which are then constrained to the expected number of scattering centers in the known object using a TLS-Prong linear prediction order, and the order of the frequency components is varied until the order yields a least-error approximation.
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: August 14, 2012
    Assignee: The Boeing Company
    Inventor: Samuel Allan Barr
  • Patent number: 8207884
    Abstract: A method for detecting radar signals comprises the steps of: receiving signals detected by a master device; receiving signals detected by a slave device; detecting radar pulses from the signals received by the master device; detecting radar pulses from the signals received by the slave device; and determining radar signals by combining the radar pulses detected by the master device and slave device.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: June 26, 2012
    Assignee: Ralink Technology Corporation
    Inventors: Chun Hsien Wen, Chih Kun Chang, Jiunn Tsair Chen
  • Patent number: 8203479
    Abstract: A tactical electronic counter measure system comprising a first retro-directional transceiver sub system, receiving signals at a first frequency band, and first retro-directional transceiver re transmitting a signal at least substantially toward the direction from which the sources signal was received, and first retro directional transceiver sub system including a plurality of blade antennas and a controller, coupled with and first retro-directional transceiver, and controller controlling the activity of and first retro directional transceiver sub system, and controller further managing the missions of and first retro directional transceiver sub system.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: June 19, 2012
    Assignee: Elbit Systems EW and Sigint—Elisra Ltd.
    Inventors: Reuel Manela, Arye Raybee, Eran Kanter, David Blank
  • Patent number: 8188907
    Abstract: The present invention provides an aircraft collision alarm system and method. The method includes the steps of collecting aircraft position information for aircraft in a given area and digitally encoding this aircraft position information. This aircraft position information is then transmitted on an audio sub-carrier over the voice communications channel of a VOR to the aircraft. The aircraft receives and processes the digitally encoded information and alerts the pilot if a collision alarm situation is present.
    Type: Grant
    Filed: September 12, 2009
    Date of Patent: May 29, 2012
    Assignee: International Business Machines Corporation
    Inventor: Gary E. O'Neil
  • Patent number: 8179825
    Abstract: A method and system for detecting RADAR signals in a radio communications system is provided. A detection system includes a pulse examination. Based on the result from the examination/analysis, a RADAR pulse is detected. The examination/analysis may include a correlator for correlating received pulses with themselves or samples previously obtained.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: May 15, 2012
    Assignee: Nortel Networks Limited
    Inventors: David Steer, Adrian Smith
  • Patent number: 8180392
    Abstract: A wireless communication device that includes a wireless communication unit that performs a wireless communication in a first mode using a first frequency band serving as a first communication channel, and performs the wireless communication in a second mode using a second frequency band including the first communication channel and a second communication channel that is adjacent to the first communication channel. Also included is a detection unit that monitors each of the first frequency band and the second frequency band, outputs a first detection signal when an interference signal is detected in the first frequency band and outputs a second detection signal when the interference signal is detected in the second frequency band. Further included is a determination unit that determines whether the interference signal is in the first communication channel or in the second communication channel based on the first and second detection signals.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: May 15, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masahiro Sekiya, Minoru Namekata, Koji Horisaki
  • Patent number: 8169358
    Abstract: A multi-band RF transceiver for transmitting communications data and radar signals includes a transmitter having a source of communications data and radar signals. A modulator combines the data and radar signals and then modulates the combined signal with a carrier signal generated by a synthesizer. A processor instructs the synthesizer to change the carrier frequency and the source to provide data and radar signals corresponding to the carrier frequency so that multiple bands are transmitted over a desired spectrum. A receiver includes a demodulator that demodulates the received signal and a synthesizer that generates a signal that tunes the demodulator to the desired carrier frequency. A processor instructs the synthesizer to change the carrier frequency so that the demodulator demodulates the multiple bands of data and the radar signals over the desired spectrum.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: May 1, 2012
    Assignee: BBN Technologies
    Inventors: John Michael Bourdelais, Ahmad Khalid Aman
  • Patent number: 8138968
    Abstract: A High Performance Unattended Ground Sensor (HiPer-UGS) system and methods comprising low-power fully functional and independent radar-nodes that communicate directly with a remote radar information gathering or relay point using a long distance communications transceiver co-located in the radar-node.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: March 20, 2012
    Assignee: Camgian Microsystems Corp.
    Inventor: Gary D. Butler
  • Patent number: 8082014
    Abstract: Devices and methods are disclosed which relate to the detection of automobiles within a proximity of a user's automobile. A wireless phone is disclosed which can detect surrounding vehicles and display them on the phone's screen without any peripherals. The wireless phone may employ a RADAR, a thermal camera, or a plurality of microphones to detect other automobiles.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: December 20, 2011
    Assignee: AT&T Mobility II LLC
    Inventors: Mark Edward Causey, Adrianne Binh Luu, Scott Andrus, Kevin Wray Jones
  • Patent number: 8044839
    Abstract: In a CW radar system for detecting motion behind a wall involving modulation of the radar transmission, means are provided to interrupt the CW wave when motion is detected and to use the same radar transmitter to transmit a serial digital message to a remote monitoring receiver. The encoding can include a receiver wakeup message to turn on the receiver only when motion has been detected. In one embodiment, a microprocessor is used to detect when motion exists behind a wall and to provide a tailorable message to modulate the radar's transmitter in the period when the CW signal from the radar is turned off after motion detection.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: October 25, 2011
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventor: Eldon M. Sutphin
  • Patent number: 8031105
    Abstract: Embodiments of the present invention disclose systems and methods for providing an enhanced data link using overlaid modulation. Through embodiments of the present invention, existing ATC (or other) modulated signals using existing standard frequencies may be utilized to transmit (e.g., from an aircraft transponder) additional information in a manner that does not render the transmitted signal unrecognizable by legacy ATC equipment. Legacy equipment will be able to demodulate and decode information that was encoded in the transmitted signal in accordance with preexisting standard modulation formats, and updated equipment can also extract the additional information that was overlaid on transmitted signals.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: October 4, 2011
    Assignee: Aviation Communication & Surveillance Systems LLC
    Inventor: Gregory T. Stayton
  • Patent number: 7986966
    Abstract: A wireless communication device includes: a wireless communication unit that is configured to: perform a wireless communication in a first mode using a first frequency band serving as a first communication channel; and perform the wireless communication in a second mode using a second frequency band including the first communication channel and a second communication channel that is adjacent to the first communication channel; a detection unit that is configured to: monitor each of the first frequency band and the second frequency band; output a first detection signal when an interference signal is detected in the first frequency band; and output a second detection signal when the interference signal is detected in the second frequency band; and a determination unit that determines whether the interference signal is in the first communication channel or in the second communication channel based on the first and second detection signals.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: July 26, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masahiro Sekiya, Minoru Namekata, Koji Horisaki
  • Patent number: 7978610
    Abstract: A method for asynchronous transmission of communication data between periodically blanked terminals separated by an unknown distance is disclosed. A bursted signal is transmitted from a first terminal with a burst time tB and a burst cycle period T. The bursted signal is received at a second terminal. A bursted response signal is transmitted from the second terminal to the first terminal. The bursted response signal has a burst cycle period of T/2 and includes a pair of response bursts, with each burst in the pair having a burst time tA?T/2?tB. Each burst in the pair of response bursts carries an identical data payload. At least one of the response bursts is received at the first terminal.
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: July 12, 2011
    Assignee: L-3 Communications Corp.
    Inventors: William K. McIntire, Larry S. Thomson, John J. Carver, II
  • Patent number: 7965222
    Abstract: A radar/laser emission detector is augmented with a cellular communications capability to provide the capability to share emission detection information amongst drivers to give other drivers even more advanced warning. A network of a plurality of cellular augmented radar/laser emission detector devices may be formed, each having the capability to source the location of radar or laser emission detections to others requesting access to such information, and each being warned when within a proximity of a recent radar or laser emission detection reported by at least one of the plurality of hybrid radar/laser detector devices.
    Type: Grant
    Filed: May 26, 2010
    Date of Patent: June 21, 2011
    Assignee: TeleCommunication Systems, Inc.
    Inventors: Lance Douglas Pitt, Sarah Jean Lawrence, Daniel D. DeLapp
  • Patent number: 7952512
    Abstract: A method is provided for mobile device enabled radar tags. A signal is transmitted to a radar tag. The radar tag detects the signal. The radar tag provides information. The information is received from the radar tag. A location of the radar tag is determined based on the information. The radar tag is identified based on the information. The identification of the radar tag, the location of the radar tag, and a time associated with determining the location of the radar tag are recorded as data in a database. The radar tag is evaluated based on accessing a plurality of recordings of the data in the database.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: May 31, 2011
    Assignee: Sprint Communications Company L.P.
    Inventors: Jason R. Delker, John M. Everson, Jason K. Whitney
  • Patent number: 7940869
    Abstract: Radio communication system includes terminal including unit detecting radar wave transmitted through second-frequency channel, first-and-second-frequency channels through which radar wave fails to be transmitted being simultaneously utilized or one of first-and-second-frequency channels being utilized, unit generating radar-detection information including information indicating detection time when detecting unit detects radar wave, and information indicating frequency channel through which radar wave is transmitted, and unit transmitting radar-detection information, and base station including unit receiving radar-detection information, unit generating radar-occurrence information based on received-radar-detection information, radar-occurrence information including information indicating occurrence time when radar wave occurs, information indicating period of occurrence of radar wave, and information indicating frequency channel through which radar wave is transmitted, and unit transmitting radar-occurrence in
    Type: Grant
    Filed: February 2, 2006
    Date of Patent: May 10, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tomoya Tandai, Tomoko Adachi, Yoriko Utsunomiya, Daisuke Takeda, Kazumi Sato, Koji Ogura
  • Patent number: 7817080
    Abstract: A ranging and communication multifunction system including a transmission unit and a receiving unit, and integrates two functions of ranging and communication in which the transmission unit includes a transmission circuit, a carrier wave modification device, and a transmission antenna. The receiving unit includes a receiving circuit, a wave detector, a low noise amplifier, and a receiving antenna, and a data modulation performed in the transmission circuit uses a PPM system. Thus, the receiving circuit provides a ranging circuit and a communication separately, so that the demodulation processing of ranging and communication can be performed in parallel.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: October 19, 2010
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Yasushi Aoyagi, Kazutaka Kamimura
  • Patent number: 7812758
    Abstract: One embodiment of the invention includes a synthetic aperture radar (SAR) system. The system comprises a radar transmitter configured to transmit a combined signal, the combined signal comprising a first signal that is a modulated SAR radar signal and a second signal that is a modulated signal. The system also comprises at least one radar receiver configured to receive a reflected combined signal that comprises a reflected first signal and a reflected second signal, and to demodulate the reflected first and second signals. The reflected first and second signals can correspond to the first and second signals having been reflected from a target. The system further comprises a radar image processor configured to generate a radar image of the target based on signal parameters associated with the reflected first signal and based on information comprised within the reflected second signal.
    Type: Grant
    Filed: November 27, 2007
    Date of Patent: October 12, 2010
    Assignee: Northrop Grumman Space and Mission Systems Corporation
    Inventor: James Richard Morris
  • Patent number: 7801521
    Abstract: An antenna arrangement, method, and cellular communications system for transmitting and receiving signals between a base station tower, ground-based mobile subscribers, and an aircraft. The antenna arrangement includes a vertically oriented array of antenna elements, and a feedline arrangement that feeds the antenna elements with progressively phase-retarded signals, thereby generating an elevated antenna beam directed upward toward the aircraft and away from the ground-based mobile subscribers. In one embodiment, the antenna arrangement also generates a horizontal antenna beam for communicating with the ground-based subscribers. The horizontal beam and the elevated beam are sufficiently separated in elevation to prevent mutual interference when using the same frequency spectrum.
    Type: Grant
    Filed: May 12, 2006
    Date of Patent: September 21, 2010
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventor: Paul Wilkinson Dent
  • Patent number: 7769105
    Abstract: A method for transmitting low data rate symbols from a burst radar transceiver is disclosed. The method includes dividing a symbol having a symbol period into a plurality of symbol sections. Each symbol section has a symbol section interval that is less than or equal to a burst interval of the radar transceiver. At least two symbol sections can be transmitted with the burst radar transceiver. Symbol energy can be accumulated from the at least two symbol sections at the communications terminal. Information in the received symbol sections can be identified based on characteristics of the accumulated symbol energy.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: August 3, 2010
    Assignee: L-3 Communications, Corp.
    Inventors: William K. McIntire, Larry S. Thomson, David H. Robbins, James J. Boesch
  • Patent number: 7764219
    Abstract: A radar/laser emission detector is augmented with a cellular communications capability to provide the capability to share emission detection information amongst drivers to give other drivers even more advanced warning. A network of a plurality of cellular augmented radar/laser emission detector devices may be formed, each having the capability to source the location of radar or laser emission detections to others requesting access to such information, and each being warned when within a proximity of a recent radar or laser emission detection reported by at least one of the plurality of hybrid radar/laser detector devices.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: July 27, 2010
    Assignee: TeleCommunication Systems, Inc.
    Inventors: Lance Douglas Pitt, Sarah Jean Lawrence, Daniel D. DeLapp
  • Patent number: 7702044
    Abstract: A wireless network device includes a correlation module, an automatic gain control module, and a control module. The correlation module correlates a predetermined portion of a radio frequency (RF) signal and generates a correlation signal based thereon. The automatic gain control (AGC) module generates a gain control signal based on said RF signal. The control module selectively determines whether said RF signal is a radar signal based on said correlation signal and said gain control signal.
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: April 20, 2010
    Assignee: Marvell World Trade, Ltd.
    Inventors: Bhaskar V. Nallapureddy, Tsunglun Yu, Yungping Hsu, Sek Kin Neng
  • Patent number: 7688263
    Abstract: Disclosed is an Radio Frequency (RF) receiving system methodology, utilizing an Luneberg Lens having a spherically shaped outer surface and a semi-spherical shaped focal surface composed of near-equally spaced frequency-independent antenna elements disposed uniformly to cover the semi-spherical focal surface of the Luneberg Lens; and radio frequency (RF) power splitters and combiners for combining the RF energy received by the antenna elements; forming rows and columns; thereby reducing the number of required RF receiver channels for subsequent processing, where the maximum row/column and differential amplitude comparison is used for deriving volumetric direction finding (DF) of intercepted signals; as part of a robust signal detection and direction-finding (DF) system; for detecting and processing a plurality of signals emanating from surface and airborne platforms within the hemisphere, where each surface and airborne platform include transmitters for transmitting navigation, communication and radar signals
    Type: Grant
    Filed: December 7, 2008
    Date of Patent: March 30, 2010
    Inventor: Roger Dale Oxley
  • Patent number: 7633427
    Abstract: An active imaging system uses communication satellites to identify the location and physical attributes of a target. A transmitter emits a time-synchronized signal directed to a target. The transmitter radiates L-band RF signals. The transmitter can be positioned on an airborne or ground platform. A constellation of communication satellites receives and time stamps the time-synchronized signal reflected from the target to form an active image of the target. The constellation of communication satellites have multiple roles other than active imaging, such as providing voice and data communications. The time-synchronized signal reflected from the target can be received by multiple satellites within the constellation of communication satellites or by multiple antenna disposed on one satellite within the constellation of communication satellites.
    Type: Grant
    Filed: April 4, 2006
    Date of Patent: December 15, 2009
    Assignee: KinetX, Inc.
    Inventor: Mark D. Nelson
  • Patent number: 7633426
    Abstract: In a CW radar system for detecting motion behind a wall (12) involving modulation of the radar transmission, means (34) are provided to interrupt the CW wave when motion is detected and to use the same radar transmitter (30) to transmit a serial digital message to a remote monitoring receiver (34). The encoding can include a receiver wakeup message to turn on the receive only when motion has been detected. In one embodiment, a microprocessor (28) is used to detect when motion exists behind a wall and to provide a tailorable message to modulate the radar's transmitter in the period when the CW signal from the radar is turned off after the motion detector.
    Type: Grant
    Filed: September 14, 2004
    Date of Patent: December 15, 2009
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventor: Eldon M. Sutphin
  • Patent number: 7606193
    Abstract: Various regulatory domains promulgate standards to define how wireless devices should operate in certain frequency bands. The 5 GHz spectrum is of particular importance to certain regulatory domains because of radar systems also operating in this spectrum. To avoid interference with such radar systems, wireless devices operating in this spectrum should be able to detect radar and quickly vacate any channels currently used by the radar systems. Techniques are provided for performing startup scans for radar, identifying backup channels for a possible channel switch, and efficiently changing channels in the event of radar detection in the operating channel. These techniques advantageously meet current regulatory standards governing DFS while minimizing network startup delays and disruption to users during a radar event.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: October 20, 2009
    Assignee: Atheros Communications, Inc.
    Inventors: William J. McFarland, Michael R. Green
  • Patent number: 7592944
    Abstract: A system and method for highly selective intrusion detection using a sparse array of ultra wideband (UWB) radars. Two or more UWB radars are arranged in a sparse array around an area to be protected. Each UWB radar transmits ultra wideband pulses that illuminate the area to be protected. Signal return data is processed to determine, among other things, whether an alarm condition has been triggered. High resolution radar images are formed that give an accurate picture of the area to be protected. This image is used to detect motion in a highly selective manner and to track moving objects within the protected area. Motion can be distinguished based on criteria appropriate to the environment in which the intrusion detection system operates.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: September 22, 2009
    Assignee: Time Domain Corporation
    Inventors: Larry W. Fullerton, James L. Richards, Mark D. Roberts, Brandon S. Dewberry
  • Patent number: 7570196
    Abstract: A method, computer program product, apparatus and system are provided. In one exemplary embodiment, a method includes: receiving at a second unit periodic energy bursts transmitted by a first unit; blanking a transmitter of the second unit in accordance with the received periodic energy bursts such that the transmitter is unable to transmit when the second unit is receiving a periodic energy burst; and transmitting a plurality of instances of a same data from the second unit to the first unit.
    Type: Grant
    Filed: May 1, 2007
    Date of Patent: August 4, 2009
    Assignee: L-3 Communications Corporation
    Inventors: Vaughn L. Mower, Larry S. Thomson, David H. Robbins, James J. Boesch
  • Patent number: 7548750
    Abstract: An external primary spectrum user detector (ESUD) is used to take over the role of integral radar detectors, and relieve user devices of the constraints associated with Primary Spectrum User detection. The ESUD can establish a relationship with the user devices by means of a cryptographic signature. The ESUD installation includes assigning it a frequency band to scan for primary spectrum user signals and the type of signals to be detected. Once activated, the ESUD will scan its assigned frequencies and emit to types of messages, “All Clear” and “Primary Spectrum User detected.” User devices on the network listen for the ESUD messages. In the absence of messages from the ESUD, the user devices activate their internal primary spectrum user detectors until ESUD messages are received.
    Type: Grant
    Filed: September 13, 2005
    Date of Patent: June 16, 2009
    Inventors: Johannes P. Kruys, Christopher G. Meil
  • Patent number: 7545309
    Abstract: A method is disclosed for transmitting low data rate symbols from a communications terminal to a burst radar transceiver. A plurality of bursts can be emitted from a burst radar transceiver, each burst having a burst interval and separated by an inter-burst interval. A symbol can be transmitted from the communications terminal to the burst radar transceiver. The symbol has a symbol period that is substantially longer than a radar transceiver burst period comprising the burst interval and the inter-burst interval. Symbol energy can be accumulated during inter-burst intervals at the burst radar transceiver over a plurality of burst periods for approximately the symbol period.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: June 9, 2009
    Assignee: L-3 Communications, Corp.
    Inventors: William K. McIntire, Larry S. Thomson, David H. Robbins, James J. Boesch
  • Publication number: 20090135044
    Abstract: In a CW radar system for detecting motion behind a wall (12) involving modulation of the radar transmission, means (34) are provided to interrupt the CW wave when motion is detected and to use the same radar transmitter (30) to transmit a serial digital message to a remote monitoring receiver (34). The encoding can include a receiver wakeup message to turn on the receive only when motion has been detected. In one embodiment, a microprocessor (28) is used to detect when motion exists behind a wall and to provide a tailorable message to modulate the radar's transmitter in the period when the CW signal from the radar is turned off after the motion detector.
    Type: Application
    Filed: September 14, 2004
    Publication date: May 28, 2009
    Inventor: Eldon M. Sutphin
  • Patent number: 7538713
    Abstract: A method for transmitting bursts of data from a communications terminal to a mobile radar transceiver having inter-burst periods is disclosed. The method includes determining a propagation time between the communications terminal and mobile radar transceiver. A length of inter-burst periods of the mobile radar transceiver having an inter-burst timing can be determined. Bursts of data having a communication burst period that is less than the inter-burst period can be formed. The bursts of data from the communications terminal can be transmitted at a transmission time based on the inter-burst timing and the propagation time to enable each burst of data to be received by the mobile radar transceiver during one of the inter-burst periods.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: May 26, 2009
    Assignee: L-3 Communications, Corp.
    Inventors: Larry S. Thomson, William K. McIntire, David H. Robbins, James J. Boesch
  • Patent number: 7535404
    Abstract: An airport safety system is disclosed, comprising surface movement radar for monitoring the movement of aircraft and land vehicles on an airport, said surface movement radar providing a signal input to a computer arranged to identify from the relative motions of aircraft and vehicles detected by the radar in accordance with a pre-programmed set of rules an aircraft at risk of collision. The computer is also programmed to cause transmission by radio of an audible alert signal when a risk is predicted, said radio transmission being at a standard aircraft communication frequency, such as the standard ground communication VHF radio channel. The alert signal can alternatively be transmitted by one of a plurality of message transmitting devices arranged at different locations adjacent to airport runways and taxiways, each message transmitting device comprising a radio transmitter connected to antenna means arranged to radiate a signal within a predetermined area at the location.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: May 19, 2009
    Inventor: Nigel Corrigan
  • Patent number: 7535405
    Abstract: A multifunction radio for receiving radio signals from and sending transmissions to multiple radio systems comprises an antenna and a transmit/receive switch coupled to the antenna. The radio further comprises a receiver section coupled to the transmit/receive switch and configured to receive radio signals from one or more multiple radio systems. The receiver section includes a digital downconverter configured to digitally downconvert radio signals sent from one or more of the multiple radio systems and a digital signal processor coupled to the digital downconverter for processing the downconverted signals. A transmitter section is coupled to the transmit/receive switch and configured to generate a transmission signal for reception by one or more of the multiple radio systems.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: May 19, 2009
    Assignee: Honeywell International Inc.
    Inventor: Jeffrey K. Hunter
  • Patent number: 7515091
    Abstract: A method and system for communicating using pulsed radar signal data links is disclosed. The method comprises encoding downlink data with a signature sequence as a secondary function onto a continuous wave pulse signal having a primary function at a master device. The data-encoded pulse signal from the master device is interpreted at one or more slave devices configured to receive the pulse signal within a first communications bandwidth of the primary and secondary functions. The master device synchronizes returning communication transmissions from each of the one or more slave devices for the secondary function within a prescribed return interval of the primary function.
    Type: Grant
    Filed: August 13, 2007
    Date of Patent: April 7, 2009
    Assignee: Honeywell International Inc.
    Inventors: David W. Meyers, Michael R. Franceschini, James A. Freebersyser
  • Publication number: 20090015461
    Abstract: A radar/laser emission detector is augmented with a cellular communications capability to provide the capability to share emission detection information amongst drivers to give other drivers even more advanced warning. A network of a plurality of cellular augmented radar/laser emission detector devices may be formed, each having the capability to source the location of radar or laser emission detections to others requesting access to such information, and each being warned when within a proximity of a recent radar or laser emission detection reported by at least one of the plurality of hybrid radar/laser detector devices.
    Type: Application
    Filed: April 10, 2006
    Publication date: January 15, 2009
    Inventors: Lance Douglas Pitt, Sarah Jean Lawrence, Daniel D. DeLapp