Patents Examined by Bernarr E. Gregory
  • Patent number: 10598765
    Abstract: A signal filtering method for filtering a numerical input signal that is sampled at a sampling frequency in order to obtain a filtered signal, the method including a first operation of application of a discrete Fourier transform to M points on a processed signal in order to obtain M points of the spectrum of the processed signal, each point of the spectrum of the processed signal corresponding to the even-numbered indices of a spectral analysis at 2*M points of the processed signal; and a second operation of application of a discrete Fourier transform to M points on the processed signal in order to obtain M points of the spectrum of the processed signal, each point of the spectrum of the processed signal corresponding to the odd-numbered indices of a spectral analysis at 2*M points of the processed signal.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: March 24, 2020
    Assignee: THALES
    Inventor: Jean-Michel Hode
  • Patent number: 10598764
    Abstract: A target detection and imaging system, comprising a RADAR unit and at least one ultra-low phase noise frequency synthesizer, is provided. The target detecting, and imaging system can assist other sensors such as LiDAR, camera to further detect and investigate objects on the road from distance. RADAR unit configured for detecting the presence and characteristics of one or more objects in various directions. The RADAR unit may include a transmitter for transmitting at least one radio signal; and a receiver for receiving the at least one radio signal returned from the one or more objects. signals. The ultra-low phase noise frequency synthesizer may utilize dual loop design comprising one main PLL and one sampling PLL, where the main PLL might include a DDS or Fractional-N PLL plus a variable divider, or the synthesizer may utilize a sampling PLL only, to reduce phase noise from the returned radio signal.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: March 24, 2020
    Inventors: Yekutiel Josefsberg, Tal Lavian
  • Patent number: 10598781
    Abstract: A system comprises a multifunction radar receiver that in turn comprises processing circuitry and front-end circuitry. The front-end circuitry is operable to receive a millimeter wave burst via a plurality of antennas to generate a plurality received signals. The processing circuitry is operable to receive a first scene representation that is an aggregate of scene representations generated by one or more other radar receivers. The processing circuitry is operable to process the received signals to generate a second scene representation. The processing circuitry is operable to compare the first scene representation and the second scene representation and generate a difference scene based on the comparison. The processing circuitry is operable to generate a control signal based on the difference scene.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: March 24, 2020
    Assignee: MaxLinear, Inc.
    Inventor: Curtis Ling
  • Patent number: 10598757
    Abstract: Estimating range bias in a timing-based radio positioning network. Systems and methods estimate range bias, and use the estimated bias to adjust an estimated range measurement for use in estimating a position of a receiver. Estimated range bias may be based on surveyed range errors associated with locations near the position of the receiver, or may alternatively be based on comparisons of different range measurements.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: March 24, 2020
    Assignee: NextNav, LLC
    Inventors: Christian Gates, Arun Raghupathy
  • Patent number: 10591613
    Abstract: Relative GPS antenna alignment uses a phase shifter electrically connected to a first GPS antenna. A combiner is electrically connected to the phase shifter, the second GPS antenna and to a GPS receiver. A GPS reception signal (Sig1) emitted by the first GPS antenna is phase-shifted by the phase shifter by a phase shift (?) that can be set by way of a controller and is added by the combiner to a second GPS reception signal (Sig2) emitted by the second GPS antenna. The composite signal (Sum) thus produced is determined for at least three different phase shifts (?). On the basis of these data, the profile of the composite signal (Sum) and the relative alignment of the two GPS antennas in relation to one another is determined.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: March 17, 2020
    Assignee: KATHREIN-WERKE KG
    Inventor: Robert Bieber
  • Patent number: 10594358
    Abstract: Various embodiments include methods and systems having detection apparatus operable to cancel or reduce leakage signal originating from a source signal being generated and transmitted from a transmitter. A leakage cancellation signal can be generated digitally, converted to an analog signal, and then subtracted in the analog domain from a received signal to provide a leakage-reduced signal for use in detection and analysis of objects. A digital cancellation signal may be generated by generating a cancellation signal in the frequency domain and converting it to the time domain. Optionally, an estimate of a residual leakage signal can be generated and applied to reduce residual leakage remaining in the leakage-reduced signal. Additional apparatus, systems, and methods can be implemented in a variety of applications.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: March 17, 2020
    Assignee: Futurewei Technologies, Inc.
    Inventors: Ricky Lap Kei Cheung, Luzhou Xu, Lixi Wu, Hsing Kuo Lo, Yuan Su
  • Patent number: 10591583
    Abstract: A method (100; 200) for digital signal processing (S(t)) of a pulse and scanning radar during an observation of a coastal zone in land/sea detection mode, the signal being sampled according to a two-dimensional temporal map, a distance dimension (d) and a recurrence dimension (rec), comprising: selecting a digital terrain model file (MNT) of the observed coastal zone; transforming (110; 210) the temporal map and/or the digital terrain model file to obtain a transformed temporal map and/or a transformed digital terrain model file the data of which are expressed in a common reference frame; constructing (120) a mask (MT; MF) from the transformed digital terrain model file; and applying (130) the mask to the samples (E(d, rec); E(d, ?f)) of the map associated with the transformed temporal map, in such a way as to obtain filtered samples (Ef(d, rec); Ef(d, ?f)).
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: March 17, 2020
    Assignee: Thales
    Inventors: Vincent Corretja, Gilles Guerrini, Richard Montigny, David Thierry Sfez
  • Patent number: 10587826
    Abstract: A seeker includes a detection array having at least 2500 sensing pixels arranged in rows by row request lines and in columns by column request lines. At least one pixel includes an electromagnetic radiation sensor to trigger the pixel in response to sensing a triggering quantity of electromagnetic radiation, a row request circuit to send a row request after the pixel triggers, and a column request circuit to send a column request after the pixel triggers. The seeker further includes a row receiver to receive the row requests, a column receiver to receive the column requests, and a sequencer to receive, for each triggering pixel, the row of the row request and the column of the column request, and to generate an event including the received row and column of the pixel. The seeker also includes a time stamper to generate a time stamp for the generated event.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: March 10, 2020
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: James A. Stobie, Michael J. Choiniere, R. Daniel McGrath
  • Patent number: 10585185
    Abstract: A system for scanning a form of interest, while the form of interest is in motion, is provided. The system comprises a first detector panel-pair, comprising a first detector panel and a second detector panel, spatially offset from the first detector panel by a first continuous passageway for the motion of the form of interest. A second detector panel-pair comprises a third detector panel and a fourth detector panel, spatially offset from the third detector panel by a second continuous passageway for the motion of the form of interest, and a location-tracking device adapted to monitor the location of the form of interest.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: March 10, 2020
    Assignee: ROHDE & SCHWARZ GMBH & CO. KG
    Inventors: Sherif Ahmed, Frank Gumbmann, Athanasios Karamalis, Andreas Schiessl
  • Patent number: 10584969
    Abstract: The present invention provides an innovative apparatus and method for onboard spacecraft location determination and celestial navigation by employing observations of extrasolar planetary star systems. In one apparatus embodiment a gas absorption cell is placed between a sensor and the light from a reference star system with at least one exoplanet, such that the sensor can detect the spectrum through the gas absorption cell. Radial velocities can be calculated via Doppler Spectroscopy techniques and incorporated into a spacecraft navigation solution. The present invention can enable and enhance significant mission capabilities for future manned and unmanned space vehicles and missions.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: March 10, 2020
    Assignee: Keystone Aerospace
    Inventor: George William Hindman
  • Patent number: 10584000
    Abstract: A communication device includes a communicator that communicates with an RF tag in a non-contact manner, a communication unit that exchanges data with a host device, and a controller that controls the communicator and the communication unit. Every time the communicator sequentially reads data from the RF tag that passes a communication-feasible region near the communicator at regular time intervals or irregular time intervals, the controller updates first data to be exchanged with the host device by the communication unit so as to include the read data. Also, the controller updates second data to be exchanged with the host device by the communication unit to a value different from a previous value in association with timing with which the first data is updated.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: March 10, 2020
    Assignee: OMRON Corporation
    Inventor: Yoshimitsu Nakano
  • Patent number: 10585182
    Abstract: A method and system to obtain a velocity measurement of a target detected by a radar system using an asymmetric Doppler spectrum includes a receive portion of the radar system to receive a reflected signal from the target. A mixer mixes the reflected signal with a shifted signal to obtain a mixed signal. The shifted signal is a shifted version of a transmitted signal that results in the reflected signal and the Doppler spectrum is defined by a frequency shift value of the shifted signal. A processor processes the mixed signal to obtain the velocity measurement.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: March 10, 2020
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Igal Bilik, Alexander Pokrass, Shahar Villeval
  • Patent number: 10585183
    Abstract: Radar equipped with a transmission antenna array and with a reception antenna array is provided, the measurement of the height h2 is obtained by estimating the frequency of at least one time-dependent amplitude modulation produced on the reception antenna array, the modulation generated by the interference of the signals received directly from the target and the signals received after reflection on the ground, on the basis of the signals transmitted by the transmission antenna array.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: March 10, 2020
    Assignee: THALES
    Inventors: Pascal Cornic, Yves Audic, St├ęphane Kemkemian
  • Patent number: 10585186
    Abstract: A radar attached laterally to airplane fuselage to detect obstacles on a collision course with a portion of the airplane facing the radar. The radar includes an emission antennal channel and reception antennal channels in the same plane. The radar Establishing in a radar coordinate system a first distance/Doppler map allowing echoes to be separated into distance and Doppler resolution cells in reception antennal channels; Establishing a second distance/Doppler map of smaller size by selecting a subset of distance/Doppler resolution cells corresponding to possible positions of targets liable to collide with the airplane; Establishing new distance/Doppler maps by forming beams computationally from the subsets of distance resolution cells; and Temporal integration, in each beam, of successive distance/Doppler maps.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: March 10, 2020
    Assignee: THALES
    Inventors: Pascal Cornic, Patrick Le Bihan, Yves Audic
  • Patent number: 10579150
    Abstract: A gesture detection system uses two radar tones to concurrently detect absolute distance and relative movement of a target object. A radar-based detection device alternates transmitting a first radar tone and a second radar tone via a radar-emitting device, and then captures a first return signal and a second return signal that are generated by the first radar tone and second radar tone reflecting off the target object. The radar-based detection device demodulates the return signals into a first set of quadrature signals and a second set of quadrature signals and, in some cases, generates a first set of digital samples and second set of digital samples from the respective quadrature signals. Various aspects process the first set of digital samples and second set of digital samples to concurrently identify absolute distance and relative movement and, at times, determine an in-the-air gesture performed by the target object.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: March 3, 2020
    Assignee: Google LLC
    Inventors: Changzhan Gu, Jaime Lien
  • Patent number: 10578733
    Abstract: In one example, a device includes a receiver configured to receive a low-power X band radar transmission, and a transmitter operably coupled to the receiver and configured to transmit an X band transmission in response to receiving the low-power X band radar transmission.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: March 3, 2020
    Assignee: Honeywell International Inc.
    Inventor: Brian P. Bunch
  • Patent number: 10581175
    Abstract: A holographic radar reflector includes a surface with a plurality of substantially microwave wavelength scale patterns along one or more portions of the surface. The holographic radar reflector can be a non-specular reflector, where the plurality of substantially microwave wavelength scale patterns have varying reflectivity. The holographic radar reflector can reflect electromagnetic radiation emitted from a fixed feed point in varying directions depending on the portion of the surface reflecting the electromagnetic radiation.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: March 3, 2020
    Assignee: Elwha LLC
    Inventors: Tom Driscoll, Roderick A. Hyde, Jordin T. Kare, David R. Smith, Clarence T. Tegreene, Yaroslav A. Urzhumov
  • Patent number: 10571224
    Abstract: A spatially-distributed architecture (SDA) of antennas transmits respective uniquely coded signals. A first receiver having a known position in a coordinate system defined by the SDA receives reflected versions of the uniquely coded signals. A first processor receives the reflected versions of the uniquely coded signals and identifies a position of a non-cooperative object in the coordinate system. A platform with a platform receiver receives non-reflected versions of the uniquely coded signals. The platform determines a position of the platform in the coordinate system. In an example, the platform uses a self-determined position and a position of the non-cooperative object communicated from the SDA to navigate or guide the platform relative to the non-cooperative object. In another example, the platform uses a self-determined position and information from an alternative signal source in a second coordinate system to guide the platform. Guidance solutions may be generated in either coordinate system.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: February 25, 2020
    Assignee: Propagation Research Associates, Inc.
    Inventor: Ernest Jefferson Holder
  • Patent number: 10571550
    Abstract: Methods and systems for correcting environmental distortion are disclosed. An example method can comprise receiving a first plurality of signals sampled in space at a first time and determining a first plurality of correction factors based on the first plurality of signals. The first plurality of correction factors can be configured to correct environmental distortion in the first plurality of signals. The first plurality of signals can be corrected by applying the first plurality of correction factors to the first plurality of signals thereby generating a corrected first plurality of signals. The corrected first plurality of signals can be provided. The method can be repeated for one or more additional pluralities of signals sampled in space at times subsequent to the first time with corresponding additional pluralities of correction factors. Each additional plurality of correction factors can be unique to a corresponding plurality of signals.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: February 25, 2020
    Assignee: UNIVERSITY OF ALASKA FAIRBANKS
    Inventors: Timothy Theurer, William Bristow
  • Patent number: 10571564
    Abstract: The invention relates to a method for detecting at least one object (9a, 9b, 9c) in a surrounding area (7) of a motor vehicle (1) by means of a driver assistance system (2), in which a transmission signal is transmitted in each of chronologically consecutive measurement cycles via a distance sensor (4), and a first and a second echo of the transmission signal reflected by the at least one object (9a, 9b, 9c) are received; and, by means of a control device (3), a first distance value (a1) is determined based on the first echo, a second distance value (a2) is determined based on the second echo, and a height of the at least one object (9a, 9b, 9c) is determined based on the first and the second distance value (a1, a2); wherein the measurement cycles are carried out during a relative movement of the motor vehicle (1) with respect to the at least one object (9a, 9b, 9c); in at least two of the measurement cycles, a difference value is determined in each case, which describes a difference between the second distan
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: February 25, 2020
    Assignee: Valeo Schalter und Sensoren GmbH
    Inventor: Michael Hallek