Scanning Patents (Class 342/158)
  • Patent number: 11515886
    Abstract: Disclosed are an analog-to-digital converter (ADC), an electronic device including the ADC, and an operating method of the ADC. The ADC includes a first stage that includes a plurality of channels, generates a first sampling signal by sequentially sampling a first analog signal based on time interleaving, and generates a first digital signal and a first residual signal corresponding to the first analog signal by performing analog-to-digital conversion based on the first sampling signal, an amplifier that amplifies the first residual signal, and a second stage that includes a plurality of channels, generates a second sampling signal by sequentially sampling the amplified first residual signal based on time interleaving, and generates a second digital signal and a second residual signal corresponding to the first analog signal by performing analog-to-digital conversion based on the second sampling signal. The number of the plurality of channels included in the first stage is odd-numbered.
    Type: Grant
    Filed: July 22, 2021
    Date of Patent: November 29, 2022
    Assignee: Konkuk University Industrial Cooperation Corp.
    Inventors: Hyungil Chae, Younggyun Oh
  • Patent number: 11360187
    Abstract: A radar sensor system including: a defined number of HF components; each HF component having at least one antenna for emitting and/or receiving radar waves and at least one antenna control for operating the at least one antenna; and a synchronization network that is connected to all HF components and via which an operating frequency of all HF components is synchronizable by at least one of the HF components.
    Type: Grant
    Filed: January 12, 2019
    Date of Patent: June 14, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Marcel Mayer, Klaus Baur, Michael Schoor
  • Patent number: 11240402
    Abstract: An optical scanning device for displaying or capturing an image is used, the device including: an optical scanning unit configured to scan emitted light while drawing a spiral trajectory, wherein the unit includes: a light guide path configured to guide incident light to output the emitted light from an emission end; and a vibration unit configured to vibrate the emission end; a light emission control unit configured to control light emission of the emitted light; a polar coordinate generation unit configured to generate a radius and a deflection angle relating to the spiral trajectory; a driving signal generation unit configured to generate a driving signal for driving the vibration unit; an angle correction unit configured to perform calculation for correcting an angle based on information from the driving signal generation unit and output an corrected angle; and a coordinate calculation unit configured to calculate coordinates of an image.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: February 1, 2022
    Assignee: Hitachi, Ltd.
    Inventors: Shinsuke Onoe, Toshiteru Nakamura, Kenichiro Yamada, Takahiro Matsuda, Yoshiho Seo
  • Patent number: 11199620
    Abstract: A radar device is provided which is capable of highly accurate distance calculation by a simple method. The radar device includes: a transmission circuit which transmits radio waves; an adjustment circuit which adjusts transmission angles of the radio waves transmitted from the transmission circuit; a reception circuit which receives plural signals which are the radio waves transmitted, based on adjustment made by the adjustment circuit, from the transmission circuit and respectively reflected from an object; and a signal processing circuit which, by processing the received signals, calculates a distance to the object. The signal processing circuit includes a buffer which stores signal strength data on the signals received by the reception circuit, the received signals respectively corresponding to the transmission angles, and a correction circuit which performs correction processing on equidistance-based portions of the signal strength data on the received signals stored in the buffer.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: December 14, 2021
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventor: Yuji Motoda
  • Patent number: 11029402
    Abstract: An improved Ground Penetrating Radar (GPR) system is provided. The system advantageously employs full waveform digitization of a returning signal to significantly reduce the number of launch signals and allowing the amount of radiation emitted to stay within the limit set by the Federal Communications Commission (FCC), while producing a robust information detection signal. In addition, intermittent large latent-duty-cycle sampling employs a less expensive digitizer typically used in prior art GPRs. The system is scalable at low-cost to accommodate multi-antenna multi-static testing for subsurface tomographic imaging.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: June 8, 2021
    Assignee: The University of Vermont and State Agricultural College
    Inventors: Dryver R Huston, Tian Xia, Dylan Burns
  • Patent number: 10976426
    Abstract: An apparatus and a method for ascertaining object kinematics of a movable object include: a trajectory calculation filter for calculating an estimated movement direction of the object based on a predicted position of the object and based on a position of the object specified in radar measurement data of the object; and a calculation unit for calculating Cartesian speeds of the object depending on a measured radial object speed and a measured object angle, which are specified in the radar measurement data, and depending on the estimated movement direction of the object that is calculated in the trajectory calculation filter.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: April 13, 2021
    Assignee: Conti Temic microelectronic GmbH
    Inventors: Andreas Eisenbarth, Yang Zhang
  • Patent number: 10871562
    Abstract: According to the invention, a device and a method are provided for determining the position of an object, in particular a moving object, in the three-dimensional space. The device comprises at least two switchable transmitting antennas having a different vertical position of the phase center as well as a plurality of receiving antennas which are arranged in series. The transmitting antennas are arranged in the horizontal direction and at a distance that corresponds to the distance of the receiving antennas. The transmitting antennas are vertically offset with respect to each other by a value that is less than or equal to half the free-space wavelength of the transmitted signal. The transmitting antennas can otherwise be arranged at any position around the receiving antenna. Horizontal beam sweep across a wide angular range is carried out according to the method of “digital beamforming”.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: December 22, 2020
    Inventor: Guenther Trummer
  • Patent number: 10839179
    Abstract: A radiofrequency identification (RFID) reader device includes a radiofrequency device configured to transmit and receive electromagnetic radiation through an antenna array. An RFID control computing device is coupled to the radiofrequency device and includes a memory coupled to a processor which is configured to be capable of executing programmed instructions comprising and stored in the memory to operate the radiofrequency device in a first mode to transmit a first radiofrequency beam to a scan area through the antenna array. A spatial location for RFID tags located within the scanned area is determined from a radar image. The radiofrequency device is operated in a second mode to transmit a second radiofrequency beam to at least one of the RFID tags, based on the determined spatial location of the RFID tags, to power an integrated circuit or sensor located on and to communicate with the at least one of the RFID tags.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: November 17, 2020
    Assignee: VUBIQ NETWORKS, INC.
    Inventor: Michael Gregory Pettus
  • Patent number: 10794994
    Abstract: A radar control device is provided, which includes a signal generating module configured to generate a transmission pattern signal comprised of at least one kind of pulse signal that is set among pulse signals including first and second pulse signals, a transmitter configured to externally transmit the transmission pattern signal via a radar antenna, a detector configured to detect transmission power of each pulse signal included in the transmission pattern signal, and a processing circuit configured to control, when the transmission pattern signal includes the second pulse signal, the transmission power of the transmission pattern signal by using a control value calculated based on the transmission power of the second pulse signal, and control, when the transmission pattern signal consists of the first signal, the transmission power of the first pulse signal by using a control value previously used for controlling the transmission power of the second pulse signal.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: October 6, 2020
    Assignee: FURUNO ELECTRIC COMPANY LIMITED
    Inventor: Keisuke Tanaka
  • Patent number: 10709127
    Abstract: A wildlife deterrence aircraft lighting apparatus includes at least one species deterrent LED to provide non-lethal deterrence of avian species (i.e., birds) within a deterrence area in an immediate flight path of an aircraft. The species deterrent LED may be configured to emit mono-colored light at a wavelength within a sensitivity range of a short-wavelength-sensitive (SWS) photoreceptor of at least one avian species and with a light intensity in at least a portion of the deterrence area sufficient to induce an augmented behavioral response. The lighting apparatus may also control the species deterrent LED(s) and aircraft lighting LED(s) independently and may provide voltage control and temperature control to enable the wildlife deterrence function without interfering with the aircraft lighting functions. The lighting apparatus may further be configured to reduce luminous flux loss and to provide thermal management to accommodate both wildlife deterrence and aircraft lighting functions.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: July 14, 2020
    Assignee: LITE ENTERPRISES INC.
    Inventor: Donald Ronning
  • Patent number: 10649069
    Abstract: The disclosure provides a radar apparatus for estimating a position and a velocity of the plurality of obstacles. The radar apparatus includes a local oscillator that generates a first signal. A first transmit unit receives the first signal from the local oscillator and generates a first transmit signal. A frequency shifter receives the first signal from the local oscillator and generates a second signal. A second transmit unit receives the second signal and generates a second transmit signal. The frequency shifter provides a frequency offset to the first signal based on a routing delay mismatch to generate the second signal such that the first transmit signal is phase coherent with the second transmit signal.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: May 12, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Karthik Ramasubramanian, Karthik Subburaj, Sachin Bhardwaj
  • Patent number: 10620313
    Abstract: In order to acquire echo sound information about a long-distance target, an active sonar comprises a fan beam transmitter, a fan beam receiver, a propagation path calculator, a path time calculator, and a horizontal distance calculator. The active sonar transmits a plurality of transmitted fan beams horizontally wide and vertically narrow, and the elevation angles of them are mutually deferent, and receives received fan beams vertically wide and horizontally narrow. The propagation path calculator calculates a propagation path of each of the transmitted fan beams based on the profile of medium and the elevation angle of the transmission. The path time calculator calculates a path time which is the time period from the transmission to the reception. The horizontal distance calculator calculates a horizontal distance from the active sonar to a generation source point of each echo sounds based on the propagation path and the path time.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: April 14, 2020
    Assignee: NEC CORPORATION
    Inventor: Minoru Kobayashi
  • Patent number: 10578726
    Abstract: An active sensing system includes an agent and at least one sensor operatively associated with the agent. The at least one sensor includes one or more emitters configured and disposed to establish a sensing zone. A conflict identification module is configured and disposed to identify one or more sensor conflict regions, and an active sensor controller is operatively connected to the at least one sensor and the conflict identification module. The active sensor controller is configured and disposed to form an adjustment zone within the sensing zone to accommodate the one or more sensor conflict regions.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: March 3, 2020
    Assignee: SIKORSKY AIRCRAFT CORPORATION
    Inventor: Michael Aaron Connor
  • Patent number: 10571563
    Abstract: There is provided a radar device. A detecting unit is configured to detect a lateral location of a target relative to a vehicle equipped with the radar device, on the basis of reflected waves from the target. A selecting unit is configured to select a predetermined number of detection values from a detection value history including detection values of the lateral location detected by the detecting unit in chronological order. The predetermined number depends on a turning radius of the vehicle. A determining unit is configured to determine a definite value of the lateral location on the basis of the detection values selected by the selecting unit.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: February 25, 2020
    Assignee: FUJITSU TEN LIMITED
    Inventor: Hisateru Asanuma
  • Patent number: 10476152
    Abstract: A method and system which enable the automatic adjustment of the rotational speed of a radar antenna in a radar system having a continuously rotating radar antenna based on where objects are being detected. The automatic adjustment of the rotational speed of the radar antenna is controlled by a controller integrated with the radar system and is based on the bearing of the emitting antenna relative to objects being detected. The method relies on continuously reading the angular position of the antenna and corresponding the presence of detected objects to this angular position so as to automatically adjust the speed of the antenna to slow down the antenna while it is directing wave signals towards detected targets and speed up the antenna while it is directing wave signals in a direction where there are no detected objects.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: November 12, 2019
    Assignee: United States of America as represented by Secretary of the Navy
    Inventors: Jacoby Larson, Darren Powell
  • Patent number: 10338187
    Abstract: A spherically constrained optical seeker assembly includes a spherical lens having an outer surface, an optical sensor assembly associated with the spherical lens, and a gimbal assembly. The optical sensor assembly is coupled to the gimbal assembly. The gimbal assembly is configured to move the optical sensor assembly to at least one desired position on the outer surface of the spherical lens. A method of manipulating the optical sensor assembly includes positioning the optical sensor assembly with respect to the spherical lens and moving the optical sensor assembly to at least one desired position with respect to the outer surface of the spherical lens by the gimbal assembly.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: July 2, 2019
    Assignee: RAYTHEON COMPANY
    Inventor: Michael K. Burkland
  • Patent number: 10254145
    Abstract: An antenna apparatus for connection to a fill level measurement device for detecting a topology of a filling material surface is provided, including an antenna configured to emit a measurement signal towards the surface and to receive the measurement signal reflected from the surface; a drive shaft configured to rotate the antenna about the drive axis while the measurement signal is being emitted; a first energy store configured to supply the antenna apparatus with electrical energy, wherein the antenna includes an array of radiator elements configured to emit the measurement signal and to receive the reflected measurement signal, and wherein the first energy store is attached to the antenna apparatus such that it rotates with the antenna when the antenna is rotated by the drive shaft.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: April 9, 2019
    Assignee: VEGA GRIESHABER KG
    Inventors: Levin Dieterle, Roland Welle
  • Patent number: 10222178
    Abstract: A method of mapping a target region image to a referenced image includes steps of acquiring the target region image. The method also includes acquiring the referenced image overlapping the target region image. The method further includes determining a number of common subregions in an intersection of the referenced image and the target region image, determining offsets between the common subregions, computing a distortion map of the target region image over the intersection, and remapping the target region image to match the reference image. The method can be utilized in a Unmanned Aerial Vehicle (UAV) and the target image can be a SAR image.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: March 5, 2019
    Assignee: LITEL INSTRUMENTS
    Inventors: Robert O. Hunter, Jr., Adlai H. Smith
  • Patent number: 10151825
    Abstract: A radar detection system that includes a signal transmitter, a signal receiver, a coupling module, two antennas and a switching module is provided. The coupling module includes a first and a second coupling paths each corresponding to a group of phase-shifting parameters. Under a first operation mode, the switching module connects the signal transmitter to the first coupling path to perform signal transmission from the two antennas along a first axis and connects the signal receiver to the second coupling path to perform signal receiving from the two antennas along a second axis. Under a second operation mode, the switching module connects the signal transmitter to the second coupling path to perform signal transmission from the two antennas along the second axis and connects the signal receiver to the first coupling path to perform signal receiving from the two antennas along the first axis.
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: December 11, 2018
    Assignee: HTC Corporation
    Inventors: Ta-Chun Pu, Chun-Yih Wu, Yen-Liang Kuo
  • Patent number: 10131446
    Abstract: An apparatus comprises a time-of-flight ranging sensor that scans in two or more directions relative to the apparatus over a series of scanning cycles. A processor computes, and to communicates to the time-of-flight ranging sensor, a pulse repetition rate (PRR) for the time-of-flight ranging sensor for each of the two or more directions based on information about surrounding terrain of the apparatus and a sensor pointing schedule for the time-of-flight ranging sensor that indicates directions that the time-of-flight ranging sensor is scheduled to point at time during the scanning cycles. In addition or lieu of computing the PRR, the processor(s) matches returns from pulses of the time-of-flight ranging sensor to the pulses probabilistically based on a current map of the vehicle's surroundings and scan coherence analysis for shapes in the returns. The current map can then be updated based on the matched returns for the next iteration.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: November 20, 2018
    Assignee: NEAR EARTH AUTONOMY, INC.
    Inventors: Adam Stambler, Lyle J. Chamberlain, Sebastian Scherer
  • Patent number: 10075221
    Abstract: A method is performed by a first communication device for directing an antenna beam based on motion. The method includes directing an antenna beam in a first direction. The method further includes receiving motion data that indicates movement of the first communication device or a second communication device. Moreover, the method includes determining, based on the motion data, a change in direction of the antenna beam from the first direction to a second direction toward the second communication device.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: September 11, 2018
    Assignee: MOTOROLA MOBILITY LLC
    Inventors: Philip G Lee, Mark Braun, Ranjeet Gupta, Mary Hor-Lao
  • Patent number: 10042050
    Abstract: A vehicle radar system for monitoring a blind spot of a vehicle includes a radar transmitter mounted on the vehicle and a transmitting antenna coupled to the radar transmitter. The transmitting antenna transmits radiation in a pattern into a region adjacent to the vehicle, the pattern comprising a first radiation lobe and a second radiation lobe. A null region of the pattern between the first lobe and the second lobe is directed into the region approximately perpendicular to a longitudinal axis of the vehicle, the longitudinal axis running between a rear end of the vehicle and a front end of the vehicle and running along a line of travel of the vehicle.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: August 7, 2018
    Assignee: Veoneer US, Inc.
    Inventors: Bernard De Mersseman, Olof Eriksson, Roine Andersson
  • Patent number: 10036800
    Abstract: Systems and methods are provided for the filtering of coherent noise signals. In an illustrative embodiment, a pulsed electronic signal receives varying phase shifts for each of its pulses prior to transmission. When coherent noise interferes with the transmitted signal, received signal receives a phase shift opposite of that applied prior to transmission such that the electronic signal is restored and the coherent noise becomes non-coherent. In another embodiment, width of each transmitted pulses can be varied prior to transmission, but a constant midpoint-to-midpoint time is maintained. After receiving a signal with coherent noise interference, the midpoints of the pulses are aligned causing the coherent noise to become non-coherent.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: July 31, 2018
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: John Paul Schofield, III, Jack Eugene Fulton, Jr., Terry Wayne Lockridge
  • Patent number: 10031220
    Abstract: Error that occurs when an absolute velocity of a target object is measured by using an antenna installed on a ship body that rocks and drifts in a complex manner since it floats on the sea is reduced. An antenna is installed on a ship body and transceives electromagnetic waves. A roll angle and a pitch angle of the ship body are detected by using an inclination sensor. An antenna velocity calculator calculates an antenna velocity of the antenna by using the detected roll and pitch angles of the ship body. An antenna velocity compensator compensates the antenna velocity of the antenna for a relative velocity between the ship body and a target object, the antenna velocity calculated by the antenna velocity calculator, the relative velocity obtained based on reflection waves received by the antenna.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: July 24, 2018
    Assignee: Furuno Electric Co., Ltd.
    Inventor: Sae Takemoto
  • Patent number: 10018713
    Abstract: A radar system for motor vehicles has at least two radar sensors for emitting and receiving radar radiation for monitoring the surroundings of the motor vehicle, the at least two radar sensors being each positioned at an angle between 40 degrees and 50 degrees to an axis, and the at least two radar sensors being configured in such a way that the respective antenna has a pivotable visual range of an angle between at least ?60 degrees and +60 degrees, in particular between ?45 degrees and +45 degrees, relative to the main emission direction of the respective radar sensor.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: July 10, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventors: Thomas Binzer, Christian Waldschmidt, Raphael Hellinger
  • Patent number: 10012727
    Abstract: A method for detecting targets, implemented by a multifunction radar wherein the radar comprises an antenna subdivided into at least two portions and is configured to transmit at least two types of signals on distinct frequency bands and to perform at least one ground detection or imaging function. During the transmission phases of an antenna portion, the reception of each antenna portion of the radar is cut. The method comprises, for each range gate, a step of reception of signals, a step of estimation of the autocorrelation matrix associated with the interferences the ground returns and from the thermal noise of the radar and a step of target detection using a test of the generalized maximum likelihood. A multifunction radar configured to implement the method for detecting targets is provided.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: July 3, 2018
    Assignee: THALES
    Inventors: Cyrille Enderli, Jean-Yves Delabbaye
  • Patent number: 9958543
    Abstract: The present method and system relates to the determination of elevation angles for the case in which more than one target object is situated within a radar cell. Through the estimation according to the present invention of the elevation angles in multi-target scenarios, even in such cases both azimuth angles and elevation angles can be determined, and a reliable classification of the respective target objects can then take place. The present system also relates to a motor vehicle having a radar system that includes an azimuth and elevation angle estimation method and system.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: May 1, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventors: Michael Schoor, Volker Gross
  • Patent number: 9910150
    Abstract: A method is provided for detecting at least two objects, particularly using a radar system having the steps of sending out a first radio signal using a first sending device, the first sending device being situated in a horizontal plane having at least two first antenna elements, receiving the radio signal using the at least two first antenna elements, receiving the radio signal using at least two second antenna elements, which are situated in different horizontal positions each above or below corresponding first antenna elements of the horizontally situated antenna elements, calculating respectively one azimuth angle and one angle of elevation from at least two objects located in front of the first antenna elements and the second antenna elements from the first radio signal received by the first antenna elements and from the first radio signal received by the second antenna elements. Furthermore, an antenna array, a radar system, and a vehicle are provided.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: March 6, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventors: Michael Schoor, Goetz Kuehnle, Volker Gross, Benedikt Loesch
  • Patent number: 9897695
    Abstract: A frequency-modulation, continuous-wave (FMCW) radar system may include a transmit array including a number of transmit antenna elements in a first dimension that is greater than a number of transmit antenna elements in a second dimension. The transmit array may output an FMCW transmit beam that illuminates an area with a greater extent in a first illumination dimension than in a second illumination dimension. The radar system may include a transmit electronics module that electronically scans the transmit beam in the second illumination dimension, and a receive array comprising receive antenna elements. The radar system may include a receive electronics module that generates, using a plurality of receive signals, a plurality of receive beams within the area illuminated by the transmit beam and electronically scans each receive beam in the second illumination dimension such that scanning of each receive beam is coordinated with scanning of the transmit beam.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: February 20, 2018
    Assignee: Honeywell International Inc.
    Inventor: David C. Vacanti
  • Patent number: 9891310
    Abstract: A radar system uses multiple-beam maximum likelihood estimation (MLE) during both search and tracking operations. During search, a four beam sequential beam cluster may be used to search for targets in a region-of-interest. During tracking, a three beam triad may be used to track one or more detected targets. In some embodiments, a beam selector switch may be used to allow two offset receive beams to time share a beamformer output port to generate the four beam sequential cluster.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: February 13, 2018
    Assignee: Raytheon Company
    Inventors: Kaichiang Chang, Yong Liu, David R. Schmidt, Stephen M. Sparagna, Frederic C. Stevens, IV
  • Patent number: 9859959
    Abstract: The present invention relates to a method for alignment of a first node with at least one secondary node in a wireless communication network. The first node includes first node antenna beams with corresponding designated pointing angles. For each such beam, the method comprises the steps of, for each secondary node: directing a first node antenna beam in its designated pointing angle; using a secondary node antenna beam where objects can generate signal reflections/diffractions; and detecting at least one signal property of reflected/diffracted signals. The method further comprises the steps: exchanging information between the nodes, regarding beam angles resulting in said signal property exceeding a corresponding threshold level; and selecting a first node beam angle and a secondary node beam angle from the beam angles for communication between the first node and each secondary node.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: January 2, 2018
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Anders Derneryd, Jan-Erik Berg, Ulrika Engström, Lars Manholm
  • Patent number: 9847573
    Abstract: A method for alignment of a first node with a second node in a wireless communication network. The method comprises directing a first node first antenna beam at a first pointing angle, using a second node antenna beam for scanning a first volume with objects being able to generate signal reflections/diffraction, detecting a first signal property of reflected/diffracted signals; and saving scan angles resulting in said first signal property exceeding a first threshold level. The method further comprises directing the second node antenna beam at said saved angles, and, for each such angle: using a first node second antenna beam for scanning; and detecting at least a second signal property of reflected/diffracted signals; exchanging information between the nodes comprising first node second antenna beam pointing direction angles resulting in said second signal property exceeding a second threshold level and said saved angles; and selecting angles for communication.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: December 19, 2017
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Anders Derneryd, Jan-Erik Berg, Ulrika Engström, Lars Manholm
  • Patent number: 9634388
    Abstract: A fixed phase shift for each of a plurality of radio frequency signal components directed to or received from a plurality of antenna elements is formed in a phase shifter. A desired antenna beam pattern with at least one grating lobe is formed on the basis of the phase-shifted radio frequency signal components of the antenna elements in a predefined antenna structure.
    Type: Grant
    Filed: October 13, 2008
    Date of Patent: April 25, 2017
    Assignee: ELEKTROBIT WIRELESS COMMUNICATIONS OY
    Inventors: Juha Ylitalo, Taavi Hirvonen
  • Patent number: 9552732
    Abstract: A driver assistance system senses and provides an indication of an approaching vehicle located sidewardly and rearwardly within an immediately adjacent driving lane to a host vehicle. The system includes left and right rear sensor units proximate rear corners of the host vehicle. The rear sensor units sense vehicles on respective sides and rearwardly of the host vehicle. When either rear sensor unit detects an approaching vehicle within the adjacent lane on the opposite side of the host vehicle therefrom, the rear sensor unit provides an opposite-lane warning signal to the other rear sensor unit. The system includes providing host vehicle driving path information to the rear sensor units for determining the path of the adjacent lanes adjacent to and rearward of the host vehicle. The path information accounts for curves in a roadway. Further, the rear sensor units detect the speed of a closing vehicle.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: January 24, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Oliver Schwindt, Bhavana Chakraborty, Kevin Buckner, James Kim
  • Patent number: 9513365
    Abstract: Respective sector radars generate first and second transmission signals by multiplying any one Spano code sequence and any one orthogonal code sequence, selected among 2(N+1) first and second Spano code sequences which are different from each other and 2(N+1) first and second orthogonal code sequences which are different from each other, in a predetermined order in each transmission period, where N is an integer of 1 or greater. Respective sector radars convert the first and second transmission signals into first and second high frequency signals, and transmit the first and second high frequency signals through first and second transmission antennas. The 2(N+1) first orthogonal code sequences and the 2(N+1) second orthogonal code sequences used in the respective sector radars are orthogonal over transmission periods of M multiples of 2(N+1), where M is an integer of 2 or greater.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: December 6, 2016
    Assignee: Panasonic Corporation
    Inventors: Tadashi Morita, Takaaki Kishigami
  • Patent number: 9291707
    Abstract: A 3D avian radar sampling system comprises a 3D volume scanning radar system and an avian track interpreter. Scanning methods employed ensure that volume revisit times are suitably short and track data produce 3D target trajectories. The avian interpreter uses the track data from the volume scanning radar to create detailed avian activity reports that convey bird abundance and behavior within a 3D cylindrical volume on intervals including hourly, daily, weekly, monthly and yearly. Hourly activity reports (updated typically every 15 minutes) provide enhanced situational awareness of developing hazards and are actionable, allowing operators to dispatch wildlife control personnel to respond to threats.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: March 22, 2016
    Assignee: Accipiter Radar Technologies nc.
    Inventors: Timothy J. Nohara, Peter T. Weber, Andrew M. Ukrainec, Al-Nasir Premji, Graeme S. Jones, Nelson Costa, Robert C. Beason
  • Patent number: 8929821
    Abstract: A wireless short range radio-frequency master device adapted to create and maintain a portable private network of wireless short range radio-frequency slave devices wherein the master device is configured to detect and register suitable slave devices for a network, and is capable of determining the proximity of any registered slave device with respect to the master device in use, the master device further being adapted to enable a user to define two or more groups of registered slave devices selected from the total number of registered slave devices and to enable a user to select a defined group of such registered slave devices as an active group, thereby forming an active portable private network of wireless short range radio frequency devices comprising the master device and selected registered slave devices within the selected group.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: January 6, 2015
    Assignee: Bigger Than The Wheel Ltd.
    Inventors: Mark Elsom-Cook, Steve P Morris
  • Patent number: 8847815
    Abstract: An electronic scanning radar apparatus mounted on a moving object includes a receiving unit including a plurality of antennas receiving a received wave arriving from a target having reflected a transmitted wave, a beat signal generating unit generating a beat signal from the transmitted wave and the received wave, a frequency resolving unit resolving the beat signal in beat frequencies and to calculate complex data based on the beat signal resolved for each beat frequency, and an azimuth detecting unit calculating a direction of arrival of the received wave based on original complex data calculated based on the beat signal, wherein the azimuth detecting unit includes a data extending unit generating extended complex data by extending the number of data based on the original complex data, and a first computation processing unit calculating the direction of arrival of the received wave based on the extended complex data.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: September 30, 2014
    Assignee: Honda elesys Co., Ltd.
    Inventor: Junji Kanamoto
  • Patent number: 8730096
    Abstract: An electronic scanning type radar device mounted on a moving body includes: a transmission unit transmitting a transmission wave; a reception unit comprising a plurality of antennas receiving a reflection wave of the transmission wave from a target; a beat signal generation unit generating a beat signal from the transmission wave and the reflection wave; a frequency resolution processing unit frequency computing a complex number data; a target detection unit detecting an existence of the target; a correlation matrix computation unit computing a correlation matrix from each of a complex number data of a detected beat frequency; a target consolidation processing unit linking the target in a present detection cycle and a past detection cycle; a correlation matrix filtering unit generating an averaged correlation matrix by weighted averaging a correlation matrix of a target in the present detection cycle and a correlation matrix of a related target in the past detection cycle; and a direction detection unit compu
    Type: Grant
    Filed: April 9, 2013
    Date of Patent: May 20, 2014
    Assignee: Honda elesys Co., Ltd.
    Inventors: Junji Kanamoto, Hiroyuki Akimoto
  • Patent number: 8717229
    Abstract: An active antenna array is arranged to activate subsets of switchable elements causing the antenna to form a first beam having a first beam pattern, and later to form a second beam having a second beam pattern of substantially identical far field radiation pattern to the first beam pattern but with different origins. A receiver receives radiation reflected from a target back to the antenna when the antenna is configured with the first beam pattern and then when configured with the second beam pattern, and compares the phase of the radiation received at the receiver when the antenna is configured with the first beam pattern with the phase of the radiation received at the receiver when the antenna is configured with the second beam pattern to provide a phase difference signal. A target locating means determines the angular location of the target from the phase difference signal.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: May 6, 2014
    Assignee: TRW Automotive US LLC
    Inventor: Richard Blachford
  • Patent number: 8674875
    Abstract: The invention provides a security scanner that produces a radar profile of a clothed person or another object such as a bag carried by a person at a distance and does not require close proximity of the person or object to the scanner itself. The scanner includes a millimeter wave antenna system optimised for short-range active imaging and arranged to provide rapid high-resolution images of an object or person of interest and processing means for resolving the images so as to detect the presence of predetermined objects. The processing means preferably includes means for comparing contrasts in reflectivity in the scanned images with predetermined expected values from skin and light clothing. The processing means may also include means for detecting predetermined behavioral or physical traits such as the effect on gait on carried weighty objects or stiff structures strapped to the person from the images of a scanned object or person. The scanner may be incorporated within a turnstile access arrangement.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: March 18, 2014
    Assignee: MBDA UK Limited
    Inventors: Christopher Ralph Carter, Charles Anthony Rowatt
  • Publication number: 20140062763
    Abstract: A transmission beam control unit 8 changes a main beam direction of a radar transmission beam every predetermined number of transmission periods. A radar transmitting unit Tx transmits a radar transmission signal using the radar transmission beam of which the main beam direction has been changed. In a radar receiving unit Rx, an estimation range selection unit 22 selects an estimation range of the direction of arrival of a reflected wave signal by limiting the estimation range to the approximate transmission beam width on the basis of the transmission beam width of the radar transmission beam and the output from the transmission beam control unit 8. The direction-of-arrival estimation unit 23 estimates the direction of arrival of the reflected wave signal on the basis of phase information between a plurality of antennas according to the selected range.
    Type: Application
    Filed: February 6, 2013
    Publication date: March 6, 2014
    Inventors: Takaaki Kishigami, Yoichi Nakagawa
  • Patent number: 8654005
    Abstract: Methods for resolving radar ambiguities using multiple hypothesis tracking are described. One such method includes (a) choosing a single waveform for each of a plurality of dwells of a first scan, wherein the single waveforms of consecutive scans are different, (b) generating the first scan using the single waveform for each of the dwells of the first scan, (c) receiving observation data as a result of the first scan, the observation data comprising measured positions of true targets and false targets, (d) generating, using multiple hypothesis tracking, position predictions for true targets and false targets, (e) comparing the predicted positions and measured positions, repeating (a)-(e) until a preselected process condition is met, and determining the true targets based on the results of the comparisons.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: February 18, 2014
    Assignee: Raytheon Company
    Inventors: Keian Christopher, Samuel S. Blackman, Robert A. Rosen, Robert J. Dempster
  • Patent number: 8648745
    Abstract: An electronic scanning radar apparatus in accordance with an embodiment of the present invention, a frequency resolving unit resolves beat signals into beat frequencies having a predetermined frequency bandwidth and calculates complex data based on the resolved beat signals for each beat frequency. An azimuth calculating unit estimates a number of received waves based on eigenvalues of a matrix being part of a primary normal equation having complex data as elements calculated from the beat signals, creates coefficients calculated as a solution of a secondary normal equation of a signal subspace created based on eigenvalues and eigenvectors corresponding to the number of the estimated waves, and calculates a DOA of a received wave based on the created coefficients.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: February 11, 2014
    Assignee: Honda elesys Co., Ltd.
    Inventor: Junji Kanamoto
  • Patent number: 8581777
    Abstract: In an electronic scanning radar apparatus, a receiving unit includes a plurality of antennas receiving a reflected wave arriving from a target having reflected a transmitted wave as a received wave. A beat signal generating unit generates beat signals from the transmitted wave and the received wave. A frequency resolving unit resolves the beat signals in beat frequencies having a predetermined frequency bandwidth and calculates complex data based on the resolved beat signals for each beat frequency. An azimuth calculating unit estimates an order of a normal equation used to calculate a DOA of the received wave on the basis of eigenvalues of a primary order matrix having complex data calculated from the beat signals as elements, creates a secondary order normal equation based on the estimated order, and calculates the DOA of the received wave based on the created secondary order normal equation.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: November 12, 2013
    Assignee: Honda elesys Co., Ltd.
    Inventors: Junji Kanamoto, Itaru Izumi, Hiroyuki Akimoto
  • Patent number: 8558734
    Abstract: A ground based avian radar receive antenna is implemented using a vertically oriented offset parabolic cylindrical antenna. The desired azimuth beamwidth is determined by the width of the parabolic cylinder reflector surface and the desired elevation beamwidth by the height of the parabolic cylinder reflector surface. A vertical array of antenna elements is mounted along the vertical focal line to provide electronic scanning in elevation. Low sidelobe levels are obtained using tapered antenna element illumination. Low cost modular construction with high reflector accuracy is obtained by attaching a thin metal reflector to thin ribs machined or stamped in the shape of the parabolic cylinder reflector surface. The antenna is enclosed in a radome and mechanically rotated 360 degrees in azimuth.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: October 15, 2013
    Inventor: Gregory Hubert Piesinger
  • Publication number: 20130229301
    Abstract: An electronic scanning type radar device mounted on a moving body includes: a transmission unit transmitting a transmission wave; a reception unit comprising a plurality of antennas receiving a reflection wave of the transmission wave from a target; a beat signal generation unit generating a beat signal from the transmission wave and the reflection wave; a frequency resolution processing unit frequency computing a complex number data; a target detection unit detecting an existence of the target; a correlation matrix computation unit computing a correlation matrix from each of a complex number data of a detected beat frequency; a target consolidation processing unit linking the target in a present detection cycle and a past detection cycle; a correlation matrix filtering unit generating an averaged correlation matrix by weighted averaging a correlation matrix of a target in the present detection cycle and a correlation matrix of a related target in the past detection cycle; and a direction detection unit compu
    Type: Application
    Filed: April 9, 2013
    Publication date: September 5, 2013
    Applicant: Honda elesys Co., Ltd.
    Inventors: Junji KANAMOTO, Hiroyuki Akimoto
  • Patent number: 8514383
    Abstract: Arbitrarily deploying scanning polarized RF reference sources and using them to establish a full position and angular orientation reference coordinate system or a full angular orientation reference coordinate system that objects property equipped with polarized RF sensors could use to determine their angular position and/or orientation relative to the reference coordinate system.
    Type: Grant
    Filed: September 18, 2010
    Date of Patent: August 20, 2013
    Assignee: Omnitek Partners LLC
    Inventor: Jahangir S. Rastegar
  • Patent number: 8477063
    Abstract: A obstacle detection system comprises a transmission antenna operable to radiate a radio frequency (RF) signal and a transmitter operable to control transmission of the RF signal from the antenna. The obstacle detection system also comprises a receiver antenna operable to receive a reflection of the RF signal; and processing circuitry operable to analyze a plurality of characteristics of a radar cross section (RCS) of the received reflection to identify an obstacle and one or more physical attributes of the obstacle.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: July 2, 2013
    Assignee: Honeywell International Inc.
    Inventors: David W. Meyers, Long Bui, Yi-Chi Shih, Alan G. Cornett
  • Patent number: 8446577
    Abstract: A method for determining an angular orientation of a sensor relative to a source. The method including: amplitude modulating at least two synchronized polarized Radio Frequency (RF) carrier signals with a predetermined relationship between their amplitude modulation of their electric field components and their polarization states to provide a scanning polarized RF reference source with a desired scanning range, pattern and frequency; detecting the scanning polarized RF reference source at the sensor; and using peak detection or pattern matching analysis on a signal detected at the sensor to determine the angular orientation of the sensor relative to scanning polarized RF reference source.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: May 21, 2013
    Assignee: Omnitek Partners, LLC
    Inventor: Jahangir S. Rastegar