Iff Or Sif Patents (Class 342/45)
  • Patent number: 10592711
    Abstract: Systems and methods to determine kinematical parameters of physical objects using radio frequency identification (RFID) tags attached to the objects. In one embodiment, one of a population of RFID tags is selectively instructed by an RFID reader to backscatter the interrogating electromagnetic wave and thus allow the RFID reader to measure the position, speed, acceleration, and/or jerk of the object to which the tag is attached. The RFID reader combines the signal representing the backscattered interrogating electromagnetic wave and the signal representing the interrogating electromagnetic wave transmitted by the RFID reader to determine or monitor one or more of the kinematical parameters of the object.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: March 17, 2020
    Assignee: Micron Technology, Inc.
    Inventor: John R. Tuttle
  • Patent number: 10545220
    Abstract: A method and apparatus are provided to authenticate information embedded within radar signals. Radar signals comprising embedded information are received from a first sender. First position information is determined corresponding to a position of the first sender. Second position information associated with the embedded information is determined. The first and second position information is compared.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: January 28, 2020
    Assignee: NXP B.V.
    Inventor: Jörg Andreas Siemes
  • Patent number: 10491309
    Abstract: A multi-rate, burst-mode, photon-counting receiver can communicate at data rates up to 10.416 Mb/s over a 30-foot water channel. With added attenuation, the maximum link loss is 97.1 dB at ?=517 nm. In clear ocean water, this equates to link distances up to 148 meters. For ?=470 nm, the achievable link distance in clear ocean water is 450 meters. The receiver incorporates soft-decision forward error correction (FEC) that supports multiple code rates to achieve error-free performance. A burst-mode receiver architecture provides robust performance with respect to unpredictable channel obstructions. The receiver can detect the data rate on-the-fly and adapts to changing levels of signal and background light. The receiver updates its phase alignment and channel estimates every frame, allowing for rapid changes in water quality as well as motion between transmitter and receiver.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: November 26, 2019
    Assignee: Massachusetts Institute of Technology
    Inventors: Hemonth Rao, Andrew Fletcher, Scott Hamilton, Nicholas Hardy, Marvin Scheinbart
  • Patent number: 10476591
    Abstract: A free space optical communication system receiver (500) comprising: a central optical sensor (600); and a plurality of further optical sensors (601-604) disposed around a peripheral edge of the central optical sensor (600). The free space optical communication system receiver (500) may be coupled to means for moving the free space optical communication system receiver (500) relative to an incoming optical signal (510). A controller (508) may be configured to, using measurements of the incident optical signal (510) by the plurality of further optical sensors (601-604), control the means so as to move the free space optical communication system receiver (500) relative to the incident optical signal (510).
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: November 12, 2019
    Assignee: BAE SYSTEMS plc
    Inventors: Leslie Charles Laycock, Andrew James Williams, Michael Stewart Griffith
  • Patent number: 10438031
    Abstract: Systems and methods to determine motion parameters of physical objects using radio frequency identification (RFID) tags attached to the objects. In one embodiment, a method implemented in a radio frequency identification (RFID) system includes determining a motion parameter of the RFID tag based on detecting a Doppler frequency shift in a radio frequency signal received from the RFID tag.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: October 8, 2019
    Assignee: MICRON TECHNOLOGY, INC.
    Inventor: John R. Tuttle
  • Patent number: 10171181
    Abstract: An apparatus is described which uses directly modulated InGaN Light-Emitting Diodes (LEDs) or InGaN lasers as the transmitters for an underwater data-communication device. The receiver uses automatic gain control to facilitate performance of the apparatus over a wide-range of distances and water turbidities.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: January 1, 2019
    Assignee: Fairfield Industries, Inc.
    Inventors: William Hopewell, Philip Lacovara, Michael Morris
  • Patent number: 10146974
    Abstract: An optical communication device can address these and other issues by utilizing a system and method in which an optical device emits a series of laser pulses that trace a spiral path over a coverage area. Each laser pulse containing a packet of information modulated at a relatively rate to help mitigate adverse effects from device movements, scintillation, and the like. The beam width of the laser, speed of the scan (along the spiral path), and number of laser pulses can be configured such that corresponding response pulses (e.g., retro-modulated pulses) received from an illuminated tag within the coverage may have a variety of different amplitudes, increasing the likelihood that at least one of the response pulses will have power characteristics that facilitate a proper decoding of the response pulse.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: December 4, 2018
    Assignee: Cubic Corporation
    Inventors: Tony Maryfield, Jonathan R. O'Brien
  • Patent number: 10126100
    Abstract: The disclosure presents at least one example of a missile system, method, and/or computer program product. The missile system may, for example, include a radar, an Automatic Dependent Surveillance Broadcast (“ADS-B”) receiver, a missile launcher, and a control station. The missile system may, for example, be configured to handle various situations such as when only ADS-B data relating to an airborne entity is available, only radar data relating to the airborne entity is available or both ADS-B data and radar data relating to the airborne entity are available. The missile system, may, for example, be a surface to air missile system.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: November 13, 2018
    Assignee: ISRAEL AEROSPACE INDUSTRIES LTD.
    Inventor: Uri Bonen
  • Patent number: 10082568
    Abstract: The invention disclosed relates to the end to end system, the methods and an apparatus for locating cell phones, lone workers, assets, and workers in hazardous environments outdoors and indoors. The end to end system integrates with the current E-911 architecture and also provides a stand alone capability for geo-locating workers and assets. The end to end system also provides caller id and geo-spatial location to the E-911 PSAP in the absence of a cellular signal for a cell phone attempting a 911 call.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: September 25, 2018
    Inventor: Hoyt Mac Layson, Jr.
  • Patent number: 10008084
    Abstract: A wearable, non-visible identification device provides reliable, tamper-proof, friendly-force identification and intruder detection. The device is integrated as a part of the wearer's uniform and includes a user input surface for periodic entry of a unit- or user-defined pass code. A timeout capability prevents the device and its identification signal from being used if the pass code is not entered within the specified time period. The preferred embodiment uses non-visible optical identification signals for 1-way identification using standard tactical equipment, making the device useful in the field during operations or at temporary security control points away from established bases. Alternative embodiments use radio-frequency, visible and reflective identification signals. Identification signaling methods are effective at stand off ranges to minimize threat to security personnel. Very low cost and low power embodiments for use by security forces in developing nations are described.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: June 26, 2018
    Inventor: James P Tolle
  • Patent number: 9971017
    Abstract: In accordance with the present invention, at least three geosynchronous satellites are employed in combination, at respective known positions above a terrestrial water surface to locate an underwater terminal (vehicle). Each satellite includes a light source, and each has a controller for activating its respective light source to simultaneously transmit a light pulse, to a predetermined cell area on the terrestrial water surface, at a precisely scheduled time, t0, for receipt by the underwater terminal. A computer at the terminal then evaluates the respective light pulse arrival times, t1, 2 & 3, to determine the location of the underwater terminal.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: May 15, 2018
    Inventors: Eric John Korevaar, James Howard Menders
  • Patent number: 9948395
    Abstract: A system comprises a tracking electromagnetic beam generator, a retro-reflecting device, a signal generator, a communication electromagnetic beam generator and a receiver. The tracking electromagnetic beam generator transmits a tracking electromagnetic beam. The retro-reflecting device reflects the tracking electromagnetic beam toward the tracking electromagnetic beam generator. The signal generator generates a communication signal. The communication electromagnetic beam generator transmits a communication electromagnetic beam, based on the communication signal, to the retro-reflecting device. The receiver receives a portion of the communication electromagnetic beam as reflected from the retro-reflecting device.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: April 17, 2018
    Assignee: The United States of America as represented by Secretary of the Navy
    Inventors: Burton H. Neuner, III, Paul D. Swanson, David T. Wayne, John S. deGrassie
  • Patent number: 9939593
    Abstract: A photonic device comprising a base plate, a photonic laser coupled to the base plate, wherein the photonic laser is configured to generate a light, a lens coupled to the base plate, wherein the lens is configured to receive the light from the photonic laser, form a focused light, and pass the focused light to a reflector, and the reflector incorporated with the base plate such that the lens is positioned between the photonic laser and the reflector, wherein the reflector is configured to receive the focused light, and wherein the reflector is configured to steer a first portion of the focused light through the base plate using total internal reflection.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: April 10, 2018
    Assignee: Futurewei Technologies, Inc.
    Inventors: Rongsheng Miao, Yu Sheng Bai
  • Patent number: 9867159
    Abstract: In a network arrangement for carrying out a location of locating objects that are arranged in a confined space and are able to be moved, the location being carried out by pulsed radio signals, wherein at least three communication-technically autarkic reference nodes that are spatially distributed and form a communication network are arranged in the confined space a communication protocol enables a location object that is arranged in the confined space to be localized by a trilateration carried out by a distance-based trilateration that is carried out by the at least three reference nodes.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: January 9, 2018
    Assignee: Balluff GmbH
    Inventors: Matthias Heldmaier, Andreas Schuerzinger, Daniel Schweizer
  • Patent number: 9810498
    Abstract: A method of preventing accidental shooting requires a safety beacon and a firearm that has a computing device and a wireless receiver. The method begins by continuously transmitting a warning signal with the safety beacon and by continuously monitoring for the warning signal with the wireless receiver. The method then processes the warning signal into an endangerment assessment with the computing unit, if the warning signal is captured by the wireless receiver. The endangerment assessment is used to determine whether or not it is safe to shoot the firearm based on the location of the safety beacon. Finally, the method executing a physical response with the firearm, if the endangerment assessment identifies a potentially unsafe situation between the safety beacon and the firearm. The physical response can be a tactile, auditory, or visual notification to the user of the potentially unsafe situation.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: November 7, 2017
    Inventor: Kenneth Carl Steffen Winiecki
  • Patent number: 9805222
    Abstract: A method for coordinating reader transmissions according to one embodiment includes, at a first reader, receiving from a second reader a request to transmit to a radio frequency identification tag; and if the first reader is transmitting, sending a denial of the request from the first reader to the second reader. A method for coordinating reader transmissions according to another embodiment includes from a first reader, sending to a plurality of readers a request to transmit to a radio frequency identification tag; waiting for responses from the plurality of readers; if a denial of the request is received by the first reader from any of the readers, not transmitting to the radio frequency identification tag; and if no denial of the request is received by the first reader from any of the readers, transmitting to the radio frequency identification tag. Additional systems, methods and computer program products are presented.
    Type: Grant
    Filed: January 8, 2009
    Date of Patent: October 31, 2017
    Assignee: ZEST LABS, INC.
    Inventors: William Henry Bares, Peter Arnold Mehring
  • Patent number: 9746561
    Abstract: A marker system includes at least one emitter. The emitter(s) emit light responsive to a flow of electrical current there through. The marker system includes a device for acquiring an incoming signal and a circuit for processing the incoming signal. The circuit for processing the incoming signal monitors the device for acquiring the incoming signal to determine if the incoming signal includes any of a plurality of incoming Identification Friend or Foe (IFF) and/or munitions-targeting signals. The circuit emits one of a plurality of responses by sending electrical current selectively through the emitter(s) and/or other feedback devices based upon which of the plurality of incoming Identification Friend or Foe (IFF) and/or munitions-targeting signals is detected by the means for processing.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: August 29, 2017
    Assignee: ARCACHON HOLDINGS LLC
    Inventors: Gary Leegate, Marcia Baldwin, Jamey Marcus Caldwell
  • Patent number: 9739556
    Abstract: A method of preventing accidental shooting requires a safety beacon and a firearm that has a computing device and a wireless receiver. The method begins by continuously transmitting a warning signal with the safety beacon and by continuously monitoring for the warning signal with the wireless receiver. The method then processes the warning signal into an endangerment assessment with the computing unit, if the warning signal is captured by the wireless receiver. The endangerment assessment is used to determine whether or not it is safe to shoot the firearm based on the location of the safety beacon. Finally, the method executing a physical response with the firearm, if the endangerment assessment identifies a potentially unsafe situation between the safety beacon and the firearm. The physical response can be a tactile, auditory, or visual notification to the user of the potentially unsafe situation.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: August 22, 2017
    Inventor: Kenneth Carl Steffen Winiecki
  • Patent number: 9509347
    Abstract: A system includes an antenna, a modulator, and a controller. The modulator may be operatively connected to the antenna. The modulator may be configured to send, a signal to a wireless device via the antenna. The modulator may have an output impedance. The controller may be connected to the output of the antenna. The controller may include a detector and a driver. The detector may be configured to determine the amplitude of a response from the wireless device. The driver may be configured to scale the output impedance responsive to the amplitude.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: November 29, 2016
    Assignee: Broadcom Corporation
    Inventor: Humberto Fonseca
  • Patent number: 9489813
    Abstract: A system for location of animals and/or objects in an environment includes a signal processing and signal generation system consisting of electromagnetic tags on animals (or other objects) in an environment (typically a three dimension outdoor natural environment) where the animals or objects are physically present at arbitrary locations, and an electro-magnetic signal generating, signal receiving, and signal processing system that can move through or in relation to the environment. The system can compute the location and identity of the animals or objects based on signals received from their associated tags, including the calculated location of the ID tags, which function as “Reader-Locators.” The calculated location is enhanced by information about the environment provided by maps, satellite photos, GPS, GIS and/or other data specific to the probability of the location of the animals or objects within certain regions of the environment.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: November 8, 2016
    Inventor: Michael L. Beigel
  • Patent number: 9450669
    Abstract: A microchannel plate based optical communication receiving system and method of use for extracting embedded information from a covert band of modulated light. The system includes an electrically powered microchannel plate, a sense amplifier in electrical communication with the microchannel plate configured to sense a change in current across a sense resister, a demodulator in electrical communication with the sense amplifier to demodulate the band of modulated light, a data output signal exiting from the demodulator, and a receiver for receiving the data output signal and extracting a piece of covert information.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: September 20, 2016
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: Michael E. Deflumere, Paul W. Schoeck
  • Patent number: 9444545
    Abstract: A system and method includes a laser transmitter configured to form a transmitted laser beam and a laser receiver configured to receive a reflected beam based on the transmitted laser beam. An identification (ID)-filter includes a substrate, a retarder filter and a reflector, where the transmitted beam passes through the retarder filter and is reflected back through the retarder filter in an opposite direction, to the laser receiver. A processor connected with a memory executes instructions stored in the memory to determine polarization properties of the reflected beam with respect to the transmitted laser beam to determine an address of the ID-filter.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: September 13, 2016
    Assignee: The Boeing Company
    Inventors: Jeffrey B. Norman, Harold N. Seiden, Kenneth C. Widen
  • Patent number: 9377349
    Abstract: Systems and techniques are provided for transmitting a light towards a plurality of acousto-optic retro reflectors, arranged as an array, that are configured to physically react to an acoustic signal. The physical reaction modulates the transmitted light which is reflected back towards a light detector and analyzed. The analysis may include detecting an acoustic signal source location and/or reconstructing the acoustic signal. A light scanner may be configured to transmit the light towards the plurality of acousto-optic retro reflectors in a predetermined, continuance, or dynamically determined sequence.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: June 28, 2016
    Assignee: Google Inc.
    Inventor: Michael Sleator
  • Patent number: 9069076
    Abstract: An identification apparatus, capable of distinguishing between a first class of objects and a second class of objects. This identification apparatus includes an identification tag, which is capable of providing a certain reflection band and a certain thermal emission band. The identification apparatus also includes a thermal weapon sight which has a long-wave infrared band-pass filter. This band-pass filter passes through a desired range of wavelengths and filters out an undesired range of wavelengths. The reflection band and the thermal emission band are detectable within the desired range of wavelengths.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: June 30, 2015
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: Igor I. Smolyaninov, Idan Mandelbaum, Louise C. Sengupta
  • Patent number: 9053253
    Abstract: A monitoring system including a first and a second portion. The first portion includes a controller for receiving a code sequence. The first portion is configured to connect the system to a common data bus. The first portion is configured to provide a synchronization signal to the second portion when the two portions are in a predetermined position. The second portion includes a controller for providing the code sequence to the first portion and the first portion being further configured to output the code sequence for verification by a verification entity.
    Type: Grant
    Filed: August 8, 2014
    Date of Patent: June 9, 2015
    Assignee: ABB Technology Ltd.
    Inventors: Lars-Magnus Felth, Ingvar Gillholm
  • Patent number: 8988310
    Abstract: An antenna for directional electronic communication and a directional communication system are provided. In one embodiment, the antenna includes: (1) a protective shell, (2) a Luneberg lens located within the protective shell and (3) multiple radio frequency signal conveyors located proximate a portion of the Luneberg lens and configured with the Luneberg lens to transmit radio frequency signals within a defined region or receive radio frequency signals that originate within the defined region.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: March 24, 2015
    Assignee: ATR Electronics Inc.
    Inventors: Ralph E. Hayles, Jr., Thomas H. O'Mara
  • Patent number: 8981988
    Abstract: A radar system is provided. The system includes a radar transceiving device equipped in a movable body and for transmitting an electromagnetic wave at a first frequency, and a transponder device arranged in a beacon and for transmitting a response wave upon receiving the electromagnetic wave. The transponder device includes a response wave transmitting module for transmitting, when a radar classification of the radar transceiving device is a solid-state radar, a response wave at a second frequency different from the first frequency in response to receiving the transmitted electromagnetic wave. The radar transceiving device includes a transmitting module for transmitting the electromagnetic wave, a receiving module for receiving a radar echo at the first frequency and the response wave at the second frequency, and a display controlling module for displaying, on a predetermined radar display unit, locations of the beacon and another movable body existing around the movable body.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: March 17, 2015
    Assignee: Furuno Electric Company Limited
    Inventors: Tatsuya Kojima, Jun Yamabayashi
  • Patent number: 8938170
    Abstract: In one aspect, identification and communication systems are described herein. In some embodiments, an identification and communication system comprises one or more query units and one or more response units, wherein at least one query unit is a handheld device. In some embodiments, the handheld device does not comprise a weapon and is not mounted on a weapon. In some embodiments, the handheld device comprises a flashlight. In some embodiments, the handheld device comprises a stylus. In some embodiments, the handheld device comprises a smart device in communication with the stylus. In some embodiments, the handheld device comprises a display screen. In some embodiments, the handheld device comprises a query controller and the display screen is operable to display data provided by the query controller.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: January 20, 2015
    Assignee: Analysis First LLC
    Inventors: Peter Gerber, Jodi Lasky
  • Patent number: 8860603
    Abstract: A method for the real-time management and sequencing of the information interchanges between a secondary radar and a plurality of aircraft includes the interchanges between the radar and a given aircraft being performed, depending on the aircraft concerned, either in a non-selective, SSR, IFF or “All Call” interrogation mode or in a selective “Roll Call” interrogation mode. According to this method, the information interchanges according to the non-selective interrogation modes are performed during successive periods specifically allocated to these modes, whereas each transaction forming an information interchange in selective mode between the radar and a given aircraft is temporally inserted into the time slots not used in periods by the interrogation-response tasks in non-selective mode. The method applies equally to the secondary radars exclusively dedicated to civilian air traffic control and to the secondary radars dedicated to combined civilian and military aircraft control tasks.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: October 14, 2014
    Assignee: Thales
    Inventor: Philippe Billaud
  • Patent number: 8836571
    Abstract: A method for transmission to a receiver of a geographic coordinate ? of a transmitter positioned in a spherical coordinate system ?, ?, at least a portion of one hemisphere of the Earth's sphere being divided into N sections each bounded by a minimum ? and a maximum ?, each section being subdivided into X cells each bounded by a minimum ? and a maximum ?, X varying depending on the section, includes at least the following steps: partitioning all of the latitude sections into M+1 classes, M sections being interspersed between two sections of the same class; transmitting, in one and the same message, the coordinate ? of the transmitter referenced relative to the cell in which the transmitter is located and the class of the latitude section in which the transmitter is located, the range of the receiver being at the most equal to the width of a cell along the axis of variation of the coordinate ?.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: September 16, 2014
    Assignee: Thales
    Inventors: Julien Colle, Eric De Larminat
  • Publication number: 20140240165
    Abstract: An integrated identification system including a housing, an active light beacon supported by the housing, an RF beacon supported by the housing, and a controller coupled to the active light beacon and RF beacon to facilitate independent control of the active light beacon and RF beacon.
    Type: Application
    Filed: February 25, 2014
    Publication date: August 28, 2014
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Alan Cornett, Robert Charles Becker, Doug Carlson
  • Patent number: 8730014
    Abstract: An improved system and method for monitoring objects, people, animals, or places uses a passive Modulating Reflector (MR) tag where a characteristic of an antenna is modified according to a time-varying pattern by a modulating network thereby causing the reflective characteristics of the antenna to vary in accordance with the time-varying pattern. When an interrogator transmits an RF waveform that impinges on the antenna, the return signal reflecting off the antenna is modulated in accordance with the time-varying pattern allowing a remote receiver to demodulate information from the modulated return signal. The antenna is embedded in a dielectric material. The MR tag can be used with a wide variety of tag-interrogator configurations employing monostatic and/or bistatic radar techniques to allow monitoring, locating, and/or tracking of objects, people, animals, or place with which MR tags are associated.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: May 20, 2014
    Assignee: Cedar Ridge Research, LLC
    Inventor: Larry W. Fullerton
  • Publication number: 20140085125
    Abstract: The RF system for preventing hunting accidents comprising RF interrogator mounted on the firearm or hunter's hat and RF transponder attached to hunter's hat, wherein directional pattern of antennas of the hat-mounted interrogator is directed along the line of view of the hunter so matching with sightline of hunter's rifle; and RF transponder, which, to cover directional pattern of 360 arc degrees in azimuth, contains a number of RF transceiver evenly attached to the hunter's hat in horizontal plane and connected to the single electronic unit. The system provides alert information about “friendly targets” that could be under fire, such as other hunters or persons equipped with said transponder; and if they are, the system develops alert signal: “Do not shoot”.
    Type: Application
    Filed: September 26, 2012
    Publication date: March 27, 2014
    Inventors: Gennadii Ivtsenkov, Evgeny Berik
  • Patent number: 8674872
    Abstract: A secondary surveillance radar with rotating antenna, configured for transmitting interrogations in S or IFF mode and processing the responses to these interrogations. The radar includes an antenna having a lobe with three channels, a Sum channel, a Difference channel and a Control channel, whose transmission means are configured for transmitting interrogation messages over the Sum and Difference channels and whose reception and processing means are configured so as to carry out, aside from conventional detections by the Sum channel, detections by the Difference channel of the responses from the aircraft having been subjected to interrogation by this same channel. The radar also includes means for Space-Time Management configured for generating interrogation messages and determining whether a given message is to be transmitted by the Sum channel, by the Difference channel or by the two channels simultaneously and controlling its transmission by the corresponding transmission channel.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: March 18, 2014
    Assignee: Thales
    Inventor: Philippe Jean Patrick Billaud
  • Patent number: 8654003
    Abstract: System and method making it possible to operate in an interrogator mode and/or in a passive listening mode wherein it comprises in combination at least the following elements: an antenna (6) having a given aperture sector, a control means (31) making it possible to toggle the system into a first interrogator operating mode using a first given angle sector or into a second passive listening operating mode using a second angle sector of greater value than the first, means (23) making it possible to add together the signals received on the sum pathway and on the difference pathway of the antenna in the case of the passive listening operating mode.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: February 18, 2014
    Assignee: Thales
    Inventors: Stéphane Soula, Claude Provost
  • Patent number: 8610618
    Abstract: The present invention includes a method for identifying a facility on the ground or at sea, the method being implemented on an airborne responder linked to at least two antennas, the method including a step of choosing a first transmission antenna and a step of transmitting an interrogation message from the chosen antenna. The method further includes testing whether a response has been received by the responder, and, if at least one response signal is received by at least one of the antennas, choosing a transmission antenna as a function of the response signal or signals received. If no response message is received, a different transmission antenna is chosen from the antenna that transmitted the last interrogation message. The method is repeated from the step of transmitting the interrogation message.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: December 17, 2013
    Assignee: Thales
    Inventors: Claude Provost, Bertrand Schoendorff
  • Patent number: 8519826
    Abstract: An application specific integrated circuit chip includes capacitors and antennas. The antennas receive energy from an outside source, and charge capacitors on the chip in order to provide power to the chip itself. The chip in turn communicates by antenna to outside receivers for the purposes of identification of the chip and hence a bag or article to which it is attached. The chip is attached to its article by means of glue which is in turn applied by an applicator which shoots the chip and the glue against the article.
    Type: Grant
    Filed: June 5, 2012
    Date of Patent: August 27, 2013
    Inventor: Tümay O. Tümer
  • Publication number: 20130207831
    Abstract: An improved system and method for monitoring objects, people, animals, or places uses a passive Modulating Reflector (MR) tag where a characteristic of an antenna is modified according to a time-varying pattern by a modulating network thereby causing the reflective characteristics of the antenna to vary in accordance with the time-varying pattern. When an interrogator transmits an RF waveform that impinges on the antenna, the return signal reflecting off the antenna is modulated in accordance with the time-varying pattern allowing a remote receiver to demodulate information from the modulated return signal. The antenna is embedded in a dielectric material. The MR tag can be used with a wide variety of tag-interrogator configurations employing monostatic and/or bistatic radar techniques to allow monitoring, locating, and/or tracking of objects, people, animals, or place with which MR tags are associated.
    Type: Application
    Filed: March 12, 2013
    Publication date: August 15, 2013
    Inventor: Cedar Ridge Research, LLC
  • Patent number: 8462042
    Abstract: In accordance with a particular embodiment of the invention, a kinematic indicator generator may receive tracking data describing the position and velocity of a target. The tracking data may be used to identify an event describing an action of the target that may have occurred. The probability that the event occurred may be calculated and indicated by a confidence. The kinematic indicator generator may generate a kinematic indicator that includes the event and the confidence.
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: June 11, 2013
    Assignee: Raytheon Company
    Inventors: Richard P. DeLong, Barbara J. Blyth
  • Patent number: 8441391
    Abstract: A secure communication topology can be used for communications between a locator and one or more transponders to determine the location of the transponders. An example system may include a locator that is configured to transmit an interrogation signal that is encoded for receipt by one or more of the transponders. When a transponder receives and correlates the interrogation signal with an internally stored reference sequence, the transponder can transmit one or more reply transmissions at precisely determined time delay intervals. The time delay intervals are secretly known by both the locator and the transponder. The reply transmissions can each correspond to previously sampled noise signals that are also secretly known by both the transponder and the locator.
    Type: Grant
    Filed: May 5, 2010
    Date of Patent: May 14, 2013
    Assignee: RoundTrip LLC
    Inventor: Lawrence J. Karr
  • Patent number: 8441392
    Abstract: A method and system for locating a target, of azimuth Aestimatedtarget and of elevation angle Sestimatedtarget, in space by a carrier uses at least one first antenna array with electronic scanning ARRAY_H and at least one second antenna array with electronic scanning ARRAY_B. The target emits a signal in response to an interrogation from the carrier, each of said antenna arrays includes at least one antenna and the total number of antennas used is at least equal to three.
    Type: Grant
    Filed: December 11, 2009
    Date of Patent: May 14, 2013
    Assignee: Thales
    Inventors: Cyril Descharles, Thierry Triconnet
  • Patent number: 8405539
    Abstract: In a synthetic aperture radar system monitoring an area containing at least one moving target for identification, the target is equipped with an identification device, which receives the radar signal transmitted by the radar system, and transmits a processed radar signal obtained by modulating the incoming radar signal with a modulating signal containing target information, such as identification and status information, and by amplifying the modulated radar signal; the radar echo signal reflected by the monitored area and containing the processed radar signal is received and processed by a control station of the radar system to locate the target on a map of the monitored area, and to extract the target information to identify the target.
    Type: Grant
    Filed: June 19, 2007
    Date of Patent: March 26, 2013
    Assignee: Telespazio S.p.A.
    Inventors: Antonio Saitto, Franco Mazzenga, Lorenzo Ronzitti
  • Publication number: 20130050010
    Abstract: The invention relates to a method for assessing, from a firing unit (101), a potential target (102) for said firing unit, comprising the steps of:—visually observing said potential target (102) through direction means;—initiating measuring of a range from said firing unit (101) to the potential target (102) by means of delivering an identifiable signal (S1);—at said potential target, receiving and analysing said signal (S1), said analysis comprising establishing that at least one of the parameters power, frequency, and durability configuration of said signal (S1)—comparing said at least one parameter with parameter indications stored in advance;—on correspondence, establishing that the firing unit belongs to own troop; and—delivering a visual signal (S2) from the potential target (102). The invention also relates to a computer program product comprising a program code (P) for a computer (200; 210) for implementing a method according to the invention.
    Type: Application
    Filed: March 17, 2011
    Publication date: February 28, 2013
    Inventor: Per-Åke Nordlander
  • Patent number: 8325081
    Abstract: A method and apparatus for reducing transponder responses to reflected signals utilizes data in an interrogator message to confirm that if two interrogations are received within a predetermined period of time and if the two interrogator signals correspond to a side lobe followed by a reflected main beam signal, the presence of multipath reflection can be correctly identified and the reply to the main beam interrogation can be suppressed.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: December 4, 2012
    Assignee: Raytheon Company
    Inventors: Cornelia F. Rivers, Thomas H. Powell
  • Patent number: 8269664
    Abstract: The present invention pertains to a portable repeater device for use by friendly forces in a combat theater. The repeater device includes a sensor that receives an interrogator signal, coded or un-coded, from a friendly interrogator, such as an airborne attack or search and rescue vehicle, and a transmitter that transmits a coded or uncoded beacon at a covert wavelength outside the typical night-vision spectrum back to the interrogator in response. Because the transmission wavelength of the repeater signal is covert and outside typical night-vision capabilities, the system limits the ability of enemy forces to locate friendly forces employing such signaling beacons through typical night-vision equipment.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: September 18, 2012
    Assignee: Lockheed Martin Corporation
    Inventor: Michael D. Daum
  • Patent number: 8232911
    Abstract: A method and system provide for confirmation of friendly aircraft as a backup to conventional IFF (identification, friend or foe) telecommunication systems and methods. An IFF secondary radar signal is generated and directed to an aircraft. When no confirming response is received within a pre-determined time period, the invention provides for generating and transmitting a pre-arranged modulated signal to the aircraft. In response to receiving the pre-arranged modulated signal, the aircraft notifies the aircrew to execute a pre-arranged kinematic maneuver that is detected by the systems using radar means to confirm that the aircraft is a friendly aircraft.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: July 31, 2012
    Assignee: Lockheed Martin Corporation
    Inventor: Richard N. Pedersen
  • Patent number: 8190278
    Abstract: Control of a device including aiming a pointing device comprising a camera and a source of invisible light in the direction of an object associated with the device to be controlled, upon which object a number of retroreflective marker elements are positioned, which reflect at least a part of the invisible light emitted by the light source back to the pointing device; generating a first image of a target area aimed at by the pointing device whereby the light source is inactive; generating a second image of the target area aimed at by the pointing device whereby, invisible light is emitted by the light source in the direction of pointing; processing the target area images to determine the presence of retroreflective marker elements; using information pertaining to the retroreflective marker elements to identify the device to be controlled and/or to determine a control signal for the identified device.
    Type: Grant
    Filed: May 24, 2006
    Date of Patent: May 29, 2012
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Jan Kneissler
  • Patent number: 8184981
    Abstract: Combined IR-RF combat identification friend-or-foe (IFF) system for a ground targets, such as dismounted soldiers, vehicles or military platforms comprising IR-RF interrogator mounted on a firearm and IR-RF transponder mounted on a friendly target. RF channel operates in Ka-band providing brief information about friendly targets that could be in attacked area, and if they are, develop alert signal: “Friendly soldiers are in the area”. The interrogator additionally contains RF channel receiving reflected signal that allows recognize armed foe. IR channel of the system prevents friendly fire in the case of direct sighting to a friendly soldier.
    Type: Grant
    Filed: May 14, 2009
    Date of Patent: May 22, 2012
    Assignee: Protective Arms Systems Inc.
    Inventors: Gennadii Ivtsenkov, Alexandre Mantsvetov, Evgeny Berik
  • Patent number: 8179302
    Abstract: An apparatus for transmitting and receiving radio-frequency signals. including a cylindrical antenna array which has an omnidirectional channel; an IFF interrogator and an IFF transponder connected to the cylindrical antenna array; and a means for sharing the omnidirectional channel between the IFF interrogator and the IFF transponder.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: May 15, 2012
    Assignee: Thales Nederland B.V.
    Inventor: Frank Wajer
  • Patent number: RE44691
    Abstract: The present invention comprises a radio frequency identification device that utilizes multiple operating frequencies. In one embodiment of the present invention, one frequency (e.g., an ultra-high frequency such as 915 MHz, 800 MHz, 915 MHz, or microwave frequency such as 2.45 GHz) is used for data transmission, and another frequency (e.g., a low or high frequency such as 13.56 MHz) is used for field penetration. In another embodiment, one frequency is used for reading information received from the multi-frequency identification device, and another frequency is used for writing to the multi-frequency identification device. In an additional embodiment, the multi-frequency identification device utilizes one antenna for all frequencies. In another embodiment, the multi-frequency identification device utilizes two or more antennas for different frequencies, and one common memory. In other embodiments, one or two digital parts, analog parts, antennas, and memories can be used.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: January 7, 2014
    Assignee: Neology, Inc.
    Inventors: Francisco Martinez de Velasco Cortina, Manfred Rietzler