Patents Examined by Nazra Nur Waheed
  • Patent number: 11561298
    Abstract: The present invention relates to an apparatus and a method for converting a radar signal for further signal processing in a test bench with a radar target emulator as well as a test bench having such an apparatus. A divider assembly preferably comprises a divider device configured to reduce a frequency and a bandwidth of the radar signal by a first factor for the further signal processing. A multiplier assembly preferably comprises a multiplier device configured to increase a frequency and a bandwidth of the radar signal by the first factor subsequent the further signal processing.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: January 24, 2023
    Assignee: AVL List GmbH
    Inventors: Michael Ernst Gadringer, Michael Vorderderfler, Andreas Gruber, Helmut Schreiber
  • Patent number: 11555886
    Abstract: A method for filtering an interferometric radar acquisition, said method comprising the step of prearrangement of a radar system for carrying out acquisitions of images of a scenario by means of SAR interferometry, the radar system comprising at least one radar sensor arranged to emit and receive a radar signal, a control unit configured to analyse said signal received by said radar sensor by means of interferometric technique, a screen arranged to show to a user said images of said scenario.
    Type: Grant
    Filed: April 15, 2021
    Date of Patent: January 17, 2023
    Assignee: IDS GEORADAR S.R.L.
    Inventors: Matteo Cecchetti, Francesco Coppi, Matthias Twardzik
  • Patent number: 11543489
    Abstract: A system for testing vehicular radar is described. The system include a diffractive optical element (DOE) configured to diffract electromagnetic waves incident on a first side from a radar device under test (DUT). The system also includes a re-illumination element adapted to receive the electromagnetic waves diffracted from the DOE from a second side. The re-illumination element being adapted to transmit apparent angle of arrival (AoA) electromagnetic waves back to the DOE.
    Type: Grant
    Filed: May 6, 2020
    Date of Patent: January 3, 2023
    Assignee: Keysight Technologies, Inc.
    Inventor: Gregory S. Lee
  • Patent number: 11520036
    Abstract: A method for space-variance correction imaging of BiSAR includes: motion parameters corresponding to a target point in an equivalent monostatic mode are calculated using a first motion trajectory, a second motion trajectory and an imaging parameter for focusing a radar echo signal, the target point at least including a center point of an imaging scene; azimuth Doppler center bias correction is performed on the radar echo signal by using the motion parameters corresponding to the center point; uniform and residual range cell migration correction is performed on a corrected signal, range blocking is performed, and range space-variance phase errors are corrected block by block; azimuth blocking is performed, and a corresponding number of filters are constructed for filtering processing; and inverse Doppler center bias correction is further performed to obtain a final imaging result graph.
    Type: Grant
    Filed: May 11, 2021
    Date of Patent: December 6, 2022
    Assignee: Institute of Electronics, Chinese Academy of Sciences
    Inventors: Heng Zhang, Yu Wang, Tingzhu Fang, Da Liang, Haoyu Lin, Yunkai Deng
  • Patent number: 11520035
    Abstract: Techniques for determining coherency between composite images having phase and amplitude components are disclosed. The coherency can be determined based on the amplitude components of the images, by providing first and second amplitude images indicative of amplitude values of pixels of a respective first and second composite images, applying to each of the first and second amplitude images a first directional derivative operator and a second directional derivative operator, thereby generating for each of the amplitude images respective first directional derivative image and second directional derivative image thereof, and generating a first coherency map based at least on the directional derivative images of the first and second amplitude images. The first coherency map is indicative of decorrelation between the first and second composite images.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: December 6, 2022
    Assignee: ELTA SYSTEMS LTD.
    Inventor: Michael Abraham
  • Patent number: 11513207
    Abstract: Display control devices and methods are provided. Vital functions of a person are detected using a radar circuit, and power consumption of a display is controlled based on the detected vital functions.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: November 29, 2022
    Assignee: Infineon Technologies AG
    Inventors: Youn Joo Kim, Abhiram Chakraborty
  • Patent number: 11500088
    Abstract: A millimeter-wave real-time imaging based safety inspection system and safety inspection method. The safety inspection system includes a conveying device (10), a millimeter wave transceiver module (11), an antenna array (17, 18), a switch array (16a, 16b), a switch control unit (15a, 15b), a quadrature demodulation and data acquisition module (12), and an image display unit (13). By using an Inverse Synthetic Aperture Radar (ISAR) imaging principle, the millimeter-wave real-time imaging based safety inspection system performs real-time imaging on an object to be inspected when the object moves, so that not only the imaging speed is improved, but also the field of view is enlarged. A safety inspector can determine whether an inspected person carries dangerous goods by observing a three-dimensional diagram of the inspected person, thereby eliminating the inconvenience caused by back-and-forth movement of a safety inspection device used by the safety inspector around the inspected person.
    Type: Grant
    Filed: September 4, 2017
    Date of Patent: November 15, 2022
    Inventors: Chunchao Qi, Chengyan Jia, Yupeng Li
  • Patent number: 11480654
    Abstract: Example embodiments relate to radar transceivers. One embodiment includes a radar transceiver. The radar transceiver includes a chirp generator for generating a chirp having an initial frequency and a final frequency. The radar transceiver also includes a controllable variable gain amplifier having an input connected to an output of the chirp generator. Further, the radar transceiver includes a control unit connected to a control input on the chirp generator and to a control input on the controllable variable gain amplifier. The control unit is adapted to output a first control signal to the chirp generator such that the chirp generator starts generating the chirp. The control unit is also adapted to output a second control signal to the controllable variable gain amplifier such that the controllable variable gain amplifier starts increasing an amplification in the controllable variable gain amplifier from a first amplification level to a second amplification level.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: October 25, 2022
    Assignee: Stichting IMEC Nederland
    Inventors: Yao-Hong Liu, Marco Mercuri
  • Patent number: 11482779
    Abstract: A system is provided comprising: a plurality of receivers; a plurality of antennas; a calibration device coupled to the plurality of receivers; a plurality of antenna paths, each of the antenna paths being arranged to couple a respective one of the plurality of receivers with a respective one of the plurality of antennas; a plurality of first calibration paths, each of the first calibration paths being arranged to couple the calibration device to different respective first pair of the antenna paths; a plurality of second calibration paths, each of the second calibration paths being arranged to couple the calibration device to a different respective second pair of the antenna paths, each second pair of the antenna paths including at least one antenna path in common with any of the first pairs of the antenna paths.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: October 25, 2022
    Assignee: Raytheon Company
    Inventor: David Bates
  • Patent number: 11480668
    Abstract: Embodiments of an access point (AP), station (STA) and method of communication are generally described herein. In a null data packet (NDP) based ranging procedure between a responding STA and an initiating STA that is unassociated with the responding STA, the responding STA may: transmit a broadcast frame that indicates one or more ranging parameters; receive, from the initiating STA, an NDP announcement (NDPA) frame that indicates transmission of a first NDP from the initiating STA; detect the first NDP from the initiating STA; transmit a second NDP for transmission to the initiating STA; and transmit, to the initiating STA, a location measurement report (LMR) that indicates: a reception time of the first NDP at the responding STA, and a transmission time of the second NDP at the responding STA.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: October 25, 2022
    Assignee: Intel Corporation
    Inventors: Feng Jiang, Qinghua Li, Jonathan Segev, Bahareh Sadeghi, Thomas J. Kenney, Xiaogang Chen, Gadi Shor, Po-Kai Huang, Robert J. Stacey, Laurent Cariou
  • Patent number: 11483912
    Abstract: A global positioning system (GPS) registration tool (GRT) is provided that is configured to register GPS coordinates of a streetlight controller (SLC) during installation of the SLC at a light fixture and store the GPS coordinates of the SLC at the SLC. Related systems, methods and computer program products are also provided.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: October 25, 2022
    Assignee: SELC Ireland Ltd
    Inventors: Francis Joseph Magee, William John Kerrigan, John Power
  • Patent number: 11454720
    Abstract: A vehicular radar sensing system includes a radar sensor disposed at a vehicle so as to sense exterior of the vehicle and having at least one transmitter that transmits radio signals and at least one receiver that receive radio signals. The radar sensor includes at least one wave guide antenna, a PCB, and a processor disposed on an inboard side of the PCB and operable to process radio signals received by the at least one receiver. The wave guide antenna includes a first wave guide slot disposed at the inboard side of the PCB that guides the radio signals to the at least one receiver or from the at least one transmitter, a second wave guide slot that guides the radio signals to and from the environment, and an air wave guide that guides the radio signals between the first wave guide slot and the second wave guide slot.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: September 27, 2022
    Inventors: Holger Hess, Wilhelm Johann Wolfgang Wöhlte
  • Patent number: 11448753
    Abstract: Described is a system for transferring learned knowledge from an electro-optical (EO) domain to a synthetic-aperture-radar (SAR) domain. The system uses a measured similarity between the EO domain and the SAR domain to train a model for classifying SAR images using knowledge previously learned from the electro-optical (EO) domain. Using the trained model, a SAR image is processed to determine regions of interest in the SAR image. A region of interest is classified to determine whether the region of interest corresponds to an object of interest, and classified regions of interest that contain the object of interest are output. The object of interest is displayed on a visualization map, and the visualization map is automatically updated to reflect a change in position of the object of interest.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: September 20, 2022
    Inventors: Mohammad Rostami, Soheil Kolouri
  • Patent number: 11442173
    Abstract: A time synchronization system an input interface configured to receive pseudorange measurements from a set of antennas of at least one Global Navigation Satellite System (GNSS) receiving system that operates the antennas at known positions according to a clock with an unknown time bias to receive signals from satellites in sight of the antennas and an output interface configured to output the determined time bias. The time synchronization system also includes a processor configured to compare the pseudorange measurements of different antennas to produce an antenna-specific clock offset for each of the antennas, correct the pseudorange measurements of the antennas according to the antenna-specific clock offsets of corresponding antennas to produce corrected pseudorange measurements, and determine the time bias of the clock using the corrected pseudorange measurements.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: September 13, 2022
    Assignee: Mitsubishi Electric Research Laboratories, Inc.
    Inventors: Kyeong-Jin Kim, Sriramya Bhamidipati, Hongbo Sun
  • Patent number: 11428803
    Abstract: Disclosed are a method and apparatus for SAR image data enhancement, and a storage medium. The method includes: processing an SAR target image by electromagnetic simulation to acquire an SAR electromagnetic simulation image; and processing the SAR electromagnetic simulation image and the SAR target image by a generative adversarial network to obtain a set of virtual samples of the SAR target image.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: August 30, 2022
    Assignee: WUYI University
    Inventors: Yikui Zhai, Wenbo Deng, Qirui Ke, Zilu Ying, Junying Gan, Junying Zeng, Ying Xu
  • Patent number: 11428782
    Abstract: Systems and methods to perform object surface estimation using a radar system involve receiving reflected signals resulting from reflection of transmit signals by an object. The method includes processing the reflected signals to obtain an image. The image indicates an intensity associated with at least one set of angle values and a set of range values. The method also includes processing the image to provide the object surface estimation. The object surface estimation indicates a subset of the at least one set of angle values and associated ranges within the set of range values.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: August 30, 2022
    Inventors: Oded Bialer, Tom Tirer, David Shapiro, Amnon Jonas
  • Patent number: 11415667
    Abstract: A signaling device that provides for passive radar detection. An incoming radar signal is reflected back outward away from the device with increased power. The incoming radar signal can also power a harmonic transceiver and generate a harmonic signal that is transmitted outward away from the device. The signaling device can also include one or more powered components to further transmit an outgoing signal.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: August 16, 2022
    Inventor: Mark Albrecht
  • Patent number: 11404779
    Abstract: Aspects of this disclosure relate to systems and methods for calibration of antenna arrays. The calibration may be based on determining a reference value for the beamformer derived from measurements of phase and/or amplitude for each channel within the beamformer. The measurements of phase and/or amplitude can be stored in non-volatile memory. Using a difference between the reference value and the measured values for each channel, a portion of a global configuration table may be copied to each channel's memory. Each channel can be separately calibrated based on the portion of the global configuration table copied to the local memory of each channel.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: August 2, 2022
    Assignee: Analog Devices International Unlimited Company
    Inventors: Mohamed Mobarak, Ahmed Khalil
  • Patent number: 11391817
    Abstract: Embodiments described herein can address these and other issues by using radar machine learning to address the radio frequency (RF) to perform object identification, including facial recognition. In particular, embodiments may obtain IQ samples by transmitting and receiving a plurality of data packets with a respective plurality of transmitter antenna elements and receiver antenna elements, where each data packet of the plurality of data packets comprises one or more complementary pairs of Golay sequences. I/Q samples indicative of a channel impulse responses of an identification region obtained from the transmission and reception of the plurality of data packets may then be used to identify, with a random forest model, a physical object in the identification region.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: July 19, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Sharad Sambhwani, Amichai Sanderovich, Evyatar Hemo, Evgeny Levitan, Eran Hof, Mohammad Faroq Salama, Michel Adib Sarkis, Ning Bi, Yingyong Qi
  • Patent number: 11378680
    Abstract: A millimeter-wave (mmW) imaging system comprises a mmW source configured to transmit mmW radiation to a target and a mmW imaging device. The mmW imaging device comprises an array of up-converter elements configured to convert backscatter radiation received from the target directly to visible light. The up-converter array has a first surface and a second surface. The mmW imaging device also comprises a first focusing lens optically coupled to the first surface of the up-converter array and configured to direct backscatter radiation received from the target to the up-converter elements. The mmW imaging device further comprises an an array of photodetectors. The photodetector array has a first surface and a second surface. The first surface of the photodetector array is configured to receive visible light emitted by the up-converter elements. The photodetector array is configured to produce electrical signals indicative of an optical image of the target.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: July 5, 2022
    Assignee: Palo Alto Research Center Incorporated
    Inventor: Farzad Michael David Inanlou