Monopulse Patents (Class 342/149)
  • Patent number: 12038503
    Abstract: A fast ramp frequency modulated continuous wave (FMCW) radar system is described herein, where the fast ramp FMCW radar system is configured to employ velocity labeled multiplexing (VLM) in connection with generating detections for objects in a scene. Transmitters in the radar system are assigned different velocity labels that corresponds to different phase rates of change of consecutive chirps in signals emitted by the transmitters. Approaches for generating detections based upon echo signals that correspond to the emitted signals are also described herein.
    Type: Grant
    Filed: August 4, 2021
    Date of Patent: July 16, 2024
    Assignee: GM CRUISE HOLDINGS LLC
    Inventors: Andre Giere, Özlem Karaca, Johanna Gütlein-Holzer, Richard Johann Körber
  • Patent number: 12038525
    Abstract: An electromagnetic wave medical imaging system, the system including: at least one antenna; transmission electronics; receiving electronics; and receiving computing electronics, where the transmission electronics are structured to transmit a first electromagnetic wave having an Orbital Angular Momentum wave-front thru the antenna towards a target, where the Orbital Angular Momentum wave-front includes a vortex region, where the transmission electronics are structured to transmit a second electromagnetic wave having a non Orbital Angular Momentum wave-front thru a first portion of the antenna towards the target, where the receiving electronics are structured to form a first signal from a first return wave of the first electromagnetic wave, where the receiving electronics are structured to form a second signal from a second return wave of the second electromagnetic wave, and where the receiving computing electronics includes a computing process to estimate the return wave associated with the vortex region.
    Type: Grant
    Filed: September 4, 2023
    Date of Patent: July 16, 2024
    Assignee: Or-Ment LLC
    Inventor: Zvi Or-Bach
  • Patent number: 12032053
    Abstract: An angle measuring device includes: a signal extracting unit for extracting a signal that includes a first reflection wave and does not include a second reflection wave as a first demodulated signal and a signal that includes the second reflection wave and does not include the first reflection wave as a second demodulated signal from reception signals output from one or more reception antennas among a plurality of reception antennas; an elevation calculating unit for calculating an elevation of a target by performing monopulse angle measurement using a sum signal of the first demodulated signal and the second demodulated signal and a difference signal between the first demodulated signal and the second demodulated signal; and an azimuth calculating unit for calculating an azimuth of the target using reception signals output from the plurality of reception antennas.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: July 9, 2024
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yu Shimizu, Satoshi Kageme, Kei Suwa
  • Patent number: 12019137
    Abstract: A radar sensor device including a first radar sensor arrangement configured to measure a fill level of a medium in a container and a second radar sensor arrangement configured to monitor an environment of the radar sensor outside the container.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: June 25, 2024
    Assignee: VEGA GRIESHABER KG
    Inventors: Roland Welle, Joerg Boersig, Levin Dieterle, Steffen Waelde
  • Patent number: 12000922
    Abstract: A method including: detecting that an aerial vehicle is located at a reference axis of a sensor, or at a predetermined or calculated angle of the reference axis of the sensor, the method further comprising, by a processor and memory circuitry: obtaining a given position Paerial of the aerial vehicle upon its detection at the reference axis of the sensor, or upon its detection at the predetermined or calculated angle of the reference axis of the sensor, and position Psensor of the sensor, and determining, based at least on Paerial and Psensor, a cardinal direction with respect to the reference axis.
    Type: Grant
    Filed: June 8, 2021
    Date of Patent: June 4, 2024
    Assignee: ELTA SYSTEMS LTD.
    Inventor: Josef Steinmetz
  • Patent number: 11923889
    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: September 27, 2022
    Date of Patent: March 5, 2024
    Assignee: Futurewei Technologies, Inc.
    Inventors: Ricky Lap Kei Cheung, Luzhou Xu, Lixi Wu, Hsing Kuo Lo, Yuan Su
  • Patent number: 11906614
    Abstract: This document describes techniques and systems directed at slow-time modulation for multiple radar channels. A set of transmit channels are modulated using code sequences to phase-modulate transmission signals. A second set of transmit channels are modulated using the same codes for phase modulation as well as using a frequency phase shift. Demodulation is achieved by multiplying received signals by the code sequences. Fast Fourier transforms (FFT) are applied to the received signals to generate a range-Doppler map for each receive channel. A non-coherent integration is performed on the range-Doppler maps to form a range-Doppler average map. The range-Doppler average map is shifted by the frequency phase shift, and the minimal of the range-Doppler average map and the shifted range-Doppler average map is retained. These techniques may reduce the impact of signal residue and increase angular resolution by enabling multiple transmit channels to be utilized.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: February 20, 2024
    Assignee: Aptiv Technologies Limited
    Inventors: Zhengyu Peng, Zhengzheng Li, Christopher D. Gianelli
  • Patent number: 11867793
    Abstract: The vehicle radar apparatus may include a transmitting array antenna configured to radiate radar signals for forward detection, N receiving array antennas configured to receive the radar signals reflected from a target after being radiated from the transmitting array antenna, and a control unit configured to estimate an azimuth of the target by using non-offset receiving array antennas among the N receiving array antennas and estimate an elevation of the target by using a phase difference between an offset receiving array antenna and the non-offset receiving array antenna among the N receiving array antennas and the azimuth of the target.
    Type: Grant
    Filed: June 27, 2022
    Date of Patent: January 9, 2024
    Assignee: HYUNDAI MOBIS CO., LTD.
    Inventor: Young Hoon Kim
  • Patent number: 11862871
    Abstract: Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.
    Type: Grant
    Filed: February 1, 2023
    Date of Patent: January 2, 2024
    Assignee: BlueHalo, LLC
    Inventors: Michael Thomas Pace, David Gregory Baur, Theodore Lyman Schuler-Sandy, William Kennedy, Jeffrey Gerard Micono, William Louis Walker, Garrett James Newell
  • Patent number: 11852715
    Abstract: An object detector includes: a transmission and reception unit that transmits a transmission wave and receives a reflection wave from an object; an acquisition unit that detects the reflection wave having a signal level above a threshold to acquire distance information indicating a distance from the transmission and reception unit to the object; a sort processing unit that sets a priority of the distance information to be higher as a difference between a signal level corresponding to the distance information and the threshold is larger when a plurality of pieces of the distance information are acquired in a predetermined period; and an output control unit that outputs the plurality of pieces of the distance information in descending order of the priority.
    Type: Grant
    Filed: March 16, 2021
    Date of Patent: December 26, 2023
    Assignee: AISIN CORPORATION
    Inventors: Ippei Sugae, Koichi Sassa
  • Patent number: 11843180
    Abstract: A mobile radar system for visualizing forward looking topography is configured with at least two phased-array antennas to form a forwarding looking phased-array interferometer.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: December 12, 2023
    Assignee: The Tomorrow Companies Inc.
    Inventors: James R. Carswell, Delwyn Karen Moller
  • Patent number: 11815586
    Abstract: One of a transmitting array antenna and a receiving array antenna includes a first antenna group and a second antenna group. The first antenna group includes one or more first antenna elements of which the phase centers of the antenna elements are laid out at each first layout spacing following a first axis direction, and a shared antenna element. The second antenna group includes a plurality of second antenna elements and the one shared antenna element, and the phase centers of the antenna elements are laid out in two columns at each second layout spacing following a second axis direction that is different from the first axis direction. The phase centers of the antenna elements included in each of the two columns differ from each other regarding position in the second axis direction.
    Type: Grant
    Filed: March 6, 2023
    Date of Patent: November 14, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kenta Iwasa, Hidekuni Yomo
  • Patent number: 11808878
    Abstract: An electromagnetic wave medical imaging system, the system including: at least one antenna; transmission electronics; receiving electronics; and receiving computing electronics, where the transmission electronics are structured to transmit a first electromagnetic wave having an Orbital Angular Momentum wave-front thru the antenna towards a target, where the transmission electronics are structured to transmit a second electromagnetic wave having a non Orbital Angular Momentum wave-front thru a first portion of the antenna towards the target, where the receiving electronics are structured to form a first signal from a first return wave of the first electromagnetic wave, where the receiving electronics are structured to form a second signal from a second return wave of the second electromagnetic wave, and where the system is designed to operate at a near field electromagnetic wave. Included are methods for operating a super resolution system.
    Type: Grant
    Filed: February 9, 2023
    Date of Patent: November 7, 2023
    Assignee: Or-Ment LLC
    Inventor: Zvi Or-Bach
  • Patent number: 11800378
    Abstract: In one embodiment, a method is provided. The method comprises determining a free space path loss distance at a frequency of a transmitter; determining a morphology class for a geographic location of the transmitter; determining a scaling factor P corresponding to the determined morphology class; determining a circular analysis region based upon the scaling factor P; and generating a contour.
    Type: Grant
    Filed: January 3, 2022
    Date of Patent: October 24, 2023
    Assignee: CommScope Technologies LLC
    Inventors: Andrew E. Beck, Meihua Liang-Legrand, Navin Srinivasan
  • Patent number: 11796633
    Abstract: A method and a radar system are provided in the present disclosure. The radar system includes a radar unit having an antenna array configured to transmit and receive radar signal and a memory configured to store radar calibration parameters and radar channel parameters corresponding to the radar unit. The method provides for operation of the radar system. The radar system also includes a radar processor. The radar processor is configured to cause transmission of radar signals by the antenna array based on the radar channel parameters. The radar processor is also configured to process received radar signals based on the radar calibration parameters. The radar system further includes a central vehicle controller configured to operate a vehicle based on the processed radar signals.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: October 24, 2023
    Assignee: Waymo LLC
    Inventors: Kevin Duncklee, Brett Coon, Filip Perich
  • Patent number: 11791543
    Abstract: A radar includes a transmitter antenna unit including a plurality of transmitter antennas arranged in a diagonal direction based on a first horizontal interval and a first vertical interval, a receiver antenna unit including a first receiver antenna group and a second receiver antenna group arranged based on the first horizontal interval, a transceiver configured to transmit a transmission signal through the transmitter antenna unit and receive a reflection signal reflected from a target object through the receiver antenna unit and a processing unit configured to extract information about the target object by processing the received reflection signal.
    Type: Grant
    Filed: December 31, 2020
    Date of Patent: October 17, 2023
    Assignee: BITSENSING INC.
    Inventors: Jae Eun Lee, Hae Seung Lim
  • Patent number: 11791556
    Abstract: A super resolution system, the system including: at least one antenna; transmission electronics; receiving electronics; and receiving computing electronics, where the transmission electronics are structured to transmit a first electromagnetic wave having an Orbital Angular Momentum wave-front thru the antenna towards a target, where the transmission electronics are structured to transmit a second electromagnetic wave having a non Orbital Angular Momentum wave-front thru a first portion of the antenna towards the target, where the receiving electronics are structured to form a first signal from a first return wave of the first electromagnetic wave, where the receiving electronics are structured to form a second signal from a second return wave of the second electromagnetic wave, and where the receiving computing electronics are structured to compute target information by using at least one difference between the first signal and the second signal.
    Type: Grant
    Filed: July 29, 2022
    Date of Patent: October 17, 2023
    Assignee: OR-MENT LLC
    Inventor: Zvi Or-Bach
  • Patent number: 11784674
    Abstract: Aspects relate to a calibration of an antenna array module of a wireless communication device in open space. The antenna array module may be used as a proximity sensor to detect an object's proximity relative to the antenna array module. Aspects include displaying an open space calibration instruction on a display of the wireless communication device, transmitting a proximity test signal from the antenna array module, measuring a value of a first signal received at the antenna array module in response to transmitting the proximity test signal, and storing the value of the first signal as an open space calibration value of the antenna array module. The first signal may be measured at cross-polarized antennas of the antenna array module. The value of the first signal may be representative of perturbations of the proximity test signal at the cross-polarized antennas.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: October 10, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Udara Fernando, Brian Clarke Banister, Eyosias Yoseph Imana
  • Patent number: 11770160
    Abstract: A hidden chamber detector includes a linear frequency modulated continuous wave (LFMCW) radar, a synthetic aperture radar (SAR) imaging processor, and a time division multiple access (TDMA) multiple input multiple output (MIMO) antenna array, including a plurality of transmitting and receiving (Tx-Rx) antenna pairs. A Tx-Rx antenna pair is selected, in a time division manner, as a Tx antenna and an Rx antenna for the LFMCW radar. The LFMCW radar is configured to transmit an illumination signal, receive an echo signal, convert the echo signal to a baseband signal, collect baseband samples, and send the collected samples to the SAR imaging processor. The SAR imaging processor is configured to receive the collected samples, collect structure/configuration of the antenna array and scanning information, and form an SAR image based on the collected samples, the structure/configuration of the antenna array, and the scanning information.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: September 26, 2023
    Assignee: INTELLIGENT FUSION TECHNOLOGY, INC.
    Inventors: Xingping Lin, Genshe Chen, Khanh Pham, Erik Blasch, Zhonghai Wang
  • Patent number: 11709226
    Abstract: A radar antenna calibration method includes: forming a detection matrix from signals detected by an arrangement of receive antennas in response to chirps transmitted by an arrangement of transmit antennas, the detection matrix having multiple rows corresponding to the chirps, multiple columns corresponding to a signal sample, and multiple planes corresponding the receive antennas; deriving a range matrix by performing a frequency transform on a portion of each row of the detection matrix; extracting a slice of the range matrix, with different rows of the slice being associated with different chirps and with different receive antennas; deriving a velocity matrix from the extracted slice by performing a frequency transform on a portion of each column of the extracted slice; analyzing the velocity matrix to determine a current peak width; and adjusting, based on the current peak width, phase shifts associated with one or more of the receive antennas.
    Type: Grant
    Filed: June 2, 2022
    Date of Patent: July 25, 2023
    Assignee: Ay Dee Kay LLC
    Inventors: Danny Elad, Marko Mlinar, Simon Srot, Dan Corcos
  • Patent number: 11700042
    Abstract: A load balancing method for cellular communication systems and communication systems in general is described where beam steering antenna systems on the client or user side of the communication link are used to optimize load balancing among the base stations or nodes. A system controller containing an algorithm is implemented to control the radiation modes from the client or user devices to assign the client or user devices to the various base stations or nodes and to dynamically vary the network load across the cellular or communication system.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: July 11, 2023
    Assignee: Kyocera AVX Components (San Diego), Inc.
    Inventors: Laurent Desclos, Jeffrey Shamblin, Olivier Pajona
  • Patent number: 11695209
    Abstract: Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.
    Type: Grant
    Filed: March 9, 2022
    Date of Patent: July 4, 2023
    Assignee: BLUEHALO, LLC
    Inventors: Michael Thomas Pace, David Gregory Baur, Theodore Lyman Schuler-Sandy, William Kennedy, Jeffrey Gerard Micono, William Louis Walker, Garrett James Newell
  • Patent number: 11656328
    Abstract: Presented herein are systems and methods for automatically evaluating detection accuracy of dynamic objects by equipment under test, comprising receiving a first record generated by an evaluated equipment under test and a second record generated by a validated reference equipment both deployed in a vehicle, the first record comprising a plurality of attributes of dynamic object(s) detected by the evaluated equipment and the second record comprising a plurality of attributes of dynamic object(s) detected by the reference equipment, correlating between dynamic object(s) detected by both the evaluated equipment and the reference equipment according to matching spatial and temporal attributes of the dynamic object(s) in the first record and in the second record, analyzing at least some of the attributes of the respective dynamic object in the first record compared to the second record, and outputting an indication of differences identified between the first record and the second record.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: May 23, 2023
    Assignee: Blue White Robotics Ltd
    Inventors: Aviram Shmueli, Alon Ascher, Ben Alfi, Shmuel Ur
  • Patent number: 11650328
    Abstract: A method and apparatus detects and estimates geo-observables of navigation signals employing civil formats with repeating baseband signal components, i.e., “pilot signals,” including true GNSS signals generated by satellite vehicles (SV's) or ground beacons (pseudolites), and malicious GNSS signals, e.g., spoofers and repeaters. Multi-subband symbol-rate synchronous channelization can exploit the full substantive bandwidth of the GNSS signals with managed complexity in each subband. Spatial/polarization receivers can be provided to remove interference and geolocate non-GNSS jamming sources, as well as targeted GNSS spoofers that emulate GNSS signals. This can provide time-to-first-fix (TTFF) over much smaller time intervals than existing GNSS methods; can operate in the presence of signals with much wider disparity in received power than existing techniques; and can operate in the presence of arbitrary multipath.
    Type: Grant
    Filed: September 20, 2021
    Date of Patent: May 16, 2023
    Inventor: Brian G. Agee
  • Patent number: 11644532
    Abstract: Method and device for radar transmission and reception by dynamic change of polarization notably for the implementation of interleaved radar modes are provided.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: May 9, 2023
    Assignee: THALES
    Inventors: Nicolas Porez, Pascal Cornic, Patrick Garrec
  • Patent number: 11644533
    Abstract: Example embodiments present radar units capable of operating in multiple polarizations. An example radar unit may include a set of transmission antennas and a set of reception antennas. Particularly, the transmission antennas may each be configured to transmit radar signals that radiate in one or more of four potential polarizations. The four polarizations can correspond to horizontal linear, vertical linear and slanted polarizations at approximately positive forty-five degrees and negative forty-five degrees from the horizontal plane. As such, the reception antennas of the radar unit may each be configured to receive reflected radar signals that are radiating in one of the four potential polarizations. The radar unit may further include an amplifier configured to cause one or multiple transmission antennas to selectively transmit between two or more of the four polarization channels.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: May 9, 2023
    Assignee: Waymo LLC
    Inventors: Jamal Izadian, Philip Ma
  • Patent number: 11635506
    Abstract: One of a transmitting array antenna and a receiving array antenna includes a first antenna group and a second antenna group. The first antenna group includes one or more first antenna elements of which the phase centers of the antenna elements are laid out at each first layout spacing following a first axis direction, and a shared antenna element. The second antenna group includes a plurality of second antenna elements and the one shared antenna element, and the phase centers of the antenna elements are laid out in two columns at each second layout spacing following a second axis direction that is different from the first axis direction. The phase centers of the antenna elements included in each of the two columns differ from each other regarding position in the second axis direction.
    Type: Grant
    Filed: October 21, 2021
    Date of Patent: April 25, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kenta Iwasa, Hidekuni Yomo
  • Patent number: 11624819
    Abstract: A signal processing device, includes: an azimuth estimation unit configured to estimate an arrival azimuth of a radio wave based on a reception signal of plural antennas; an estimated reception signal calculation unit configured to calculate an estimated reception signal based on an estimation result of the arrival azimuth, for comparison with the reception signal; a residual signal calculation unit configured to calculate a residual signal which is a difference between the reception signal and the estimated reception signal; and a determination unit configured to determine whether the estimation result of the arrival azimuth is correct based on the residual signal.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: April 11, 2023
    Assignee: DENSO TEN Limited
    Inventor: Hiroki Ishikawa
  • Patent number: 11455513
    Abstract: A method is provided for commodity management. The method generates, using a Dynamic Boltzmann Machine (DyBM), a future mean prediction and a future standard deviation prediction of a financial time-series dataset for a commodity. The method measures, using Hellinger Distance (HD), an accuracy of the future mean prediction and the future standard deviation prediction. The method combines the future mean prediction and the future standard deviation prediction with the Hellinger Distance to determine a DyBM trustworthy prediction time period in which predictions by the DyBM, including the future mean prediction and the future standard deviation prediction, are deemed trustworthy. The method selectively performs an action relating to an ownership of the commodity based on at least one of the future mean prediction and the future standard deviation prediction, responsive to the future mean prediction and the future standard deviation prediction being generated during the DyBM trustworthy prediction time period.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: September 27, 2022
    Assignee: International Business Machines Corporation
    Inventor: Rudy R. Harry Putra
  • Patent number: 11435472
    Abstract: A super resolution radar system, the radar system including: at least one antenna; transmission electronics; receiving electronics; and receiving computing electronics, where the transmission electronics is structured to transmit a first electromagnetic wave having an Orbital Angular Momentum wave-front using the antenna, where the transmission electronics is structured to transmit a second electromagnetic wave having a no Orbital Angular Momentum wave-front using a first portion of the antenna, where the receiving electronics is structured to form a first signal from a first return wave of the first electromagnetic wave, where the receiving electronics is structured to form a second signal from a second return wave of the second electromagnetic wave, and where the receiving computing electronics is structured to subtract the first signal from the second signal.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: September 6, 2022
    Assignee: MONOLITHIC 3D INC.
    Inventor: Zvi Or-Bach
  • Patent number: 11402488
    Abstract: The present system and method allow for accurate estimation of angle and angle rate for a target using a slewing antenna. These issues are accounted for by using a special form of non-coherent integration. An extension of the non-coherent integration may be used to estimate the target's angle rates. This technique can also be expanded to determine whether a target is in the main lobe or in a side lobe in one or two directions.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: August 2, 2022
    Assignee: Massachusetts Institute of Technology
    Inventor: Andrew L. Kintz
  • Patent number: 11380995
    Abstract: The present disclosure provides a two-dimensional antenna system. The two-dimensional antenna system includes a transmitting antenna array and a receiving antenna array. The transmitting antenna array includes one or more circularly polarized transmitting antennas having a first direction of rotation. The receiving antenna array includes two or more first circularly polarized receiving antennas having a second direction of rotation arranged in a first direction, and two or more second circularly polarized receiving antennas having the second direction of rotation arranged in a second direction. The first direction is perpendicular to the second direction, and the first direction of rotation is opposite to the second direction of rotation.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: July 5, 2022
    Assignee: SZ DJI TECHNOLOGY CO., LTD.
    Inventors: Xiaying Zou, Xueming Peng, Qiang Gu, Han Huang
  • Patent number: 11372083
    Abstract: A radar antenna calibration method includes: forming a detection matrix from signals detected by an arrangement of receive antennas in response to chirps transmitted by an arrangement of transmit antennas, the detection matrix having multiple rows corresponding to the chirps, multiple columns corresponding to a signal sample, and multiple planes corresponding the receive antennas; deriving a range matrix by performing a frequency transform on a portion of each row of the detection matrix; extracting a slice of the range matrix, with different rows of the slice being associated with different chirps and with different receive antennas; deriving a velocity matrix from the extracted slice by performing a frequency transform on a portion of each column of the extracted slice; analyzing the velocity matrix to determine a current peak width; and adjusting, based on the current peak width, phase shifts associated with one or more of the receive antennas.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: June 28, 2022
    Assignee: Ay Dee Kay LLC
    Inventors: Danny Elad, Marko Mlinar, Simon Srot, Dan Corcos
  • Patent number: 11349206
    Abstract: Beamformers and beamforming methods are disclosed which involve diagonal loading (regularization). Features may include the automatic determination of the regularization parameter using a linearly constrained minimum power (LCMP) bounded perturbation regularization (BPR) approach.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: May 31, 2022
    Assignee: KING ABDULAZIZ UNIVERSITY
    Inventors: Muhammad Moinuddin, Ubaid M. Al-Saggaf, Maaz Mahadi, Tarig Ballal Ahmed, Tareq Y. Al-Naffouri
  • Patent number: 11320531
    Abstract: A method for active neutralization of the effect of the vibrations of a rotary-wing aircraft for a monostatic Doppler radar includes a first step of measuring and temporally extrapolating the vibration modes at the transmitting-receiving radar antenna, using a 3-axis vibration sensor, fixed to the antenna and near the phase centre of the antenna; then a second step of estimating the expected movements of the transmitting-receiving antenna or of the first transmitting antenna and the second receiving antenna; then a third step of compensating the expected movements of the transmission radar antenna in the transmission chain or in the reception chain of the radar transmitter, wherein the projection of the movement vector of the phase centre O on an aiming direction is calculated to determine the value of the compensation phase shift to be applied.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: May 3, 2022
    Assignee: THALES
    Inventors: Patrick Garrec, Rodolphe Cottron, Yoan Veyrac
  • Patent number: 11223416
    Abstract: A system and method for providing wireless data communication between a wireless communication system in an aircraft and a stationary communication server outside the aircraft are disclosed. The wireless communication system includes a plurality of antennas, and a router in the aircraft configured to transmit and receive wireless data communication to and from a stationary communication server outside the aircraft through at least one ground base station via at least one of the plurality of antennas. The plurality of antennas includes at least one omnidirectional antenna and at least one directional antenna. The router includes a control unit configured to restrict the wireless data communication to solely occur through the at least one directional antenna the when the current altitude of the aircraft is determined to be above a predefined altitude threshold value.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: January 11, 2022
    Assignee: ICOMERA AB
    Inventor: Mats Karlsson
  • Patent number: 11204411
    Abstract: A method of operating a radar system includes transmitting a plurality of transmitted radio frequency (RF) signals by a plurality of directional antennas. The plurality of directional antennas is disposed on a planar surface of a substrate. Each of the plurality of antennas is in a fixed orientation and position on the planar surface. A respective individual coverage of each of the plurality of directional antennas is less than 360°. A combined coverage of the plurality of transmitted RF signals completely covers a 360° region surrounding the radar system. The method also includes receiving a reflected RF signal by a directional antenna of the plurality of directional antennas.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: December 21, 2021
    Assignee: INFINEON TECHNOLOGIES AG
    Inventors: Reinhard-Wolfgang Jungmaier, Saverio Trotta, Ashutosh Baheti, Jagjit Singh Bal
  • Patent number: 11187795
    Abstract: One of a transmitting array antenna and a receiving array antenna includes a first antenna group and a second antenna group. The first antenna group includes one or more first antenna elements of which the phase centers of the antenna elements are laid out at each first layout spacing following a first axis direction, and a shared antenna element. The second antenna group includes a plurality of second antenna elements and the one shared antenna element, and the phase centers of the antenna elements are laid out in two columns at each second layout spacing following a second axis direction that is different from the first axis direction. The phase centers of the antenna elements included in each of the two columns differ from each other regarding position in the second axis direction.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: November 30, 2021
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Kenta Iwasa, Hidekuni Yomo
  • Patent number: 11150326
    Abstract: A radar system with angle error determination function and method thereof are provided. The system includes a camera device, a radar device, a calculation module, and an angle calibration module. The camera device captures a surveillance image of a surveillance area. The radar device sends a radar signal toward the surveillance area. The calculation module, according to the surveillance image, acquires an image angle of an object with respect to the vehicle in the surveillance area. Also, the calculation module acquires a radar angle of the object with respect to the vehicle which is produced according to a reflection signal generated when the radar signal meets the object. The angle calibration module, by referring to the image angle, correspondingly calibrates the radar angle. Therefore, the radar angle is immediately calibrated.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: October 19, 2021
    Assignee: CUBTEK INC.
    Inventors: San-Chuan Yu, Shyh-Jong Chung, Jyong Lin
  • Patent number: 11105914
    Abstract: Monopulse radar apparatus is disclosed. The apparatus comprises a digital processor and an antenna having a plurality of receive channels through which signals received by the antenna are passed to the processor. Each receive channel includes an analogue to digital converter, and the processor is arranged to calculate sum and difference signals from the signals received through each receive channel. The processor is also arranged such that, in the event that a malfunction is detected in one of the plurality of receive channels, compensated sum and difference signals are calculated by the processor using the signals from the remaining, functioning receive channels.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: August 31, 2021
    Assignee: MBDA UK LIMITED
    Inventor: Tamara Louise Sheret
  • Patent number: 10996328
    Abstract: A mainlobe detection process can include a number of tests that are performed to define when the monopulse antenna system will transition from open loop scanning to closed loop scanning and then to tracking. A hybrid tracking technique is also provided which adaptively discovers and corrects for phase alignment error. Magnitude-only tracking can be performed initially to locate the nulls in the azimuth and elevation ratios and to identify the magnitudes of these ratios at these nulls. Phase tracking can be then performed. During phase tracking, phase corrections can be repeatedly applied to the azimuth and elevation difference channels to correct any phase error that may exist. During this process, the magnitudes of the ratios can be used to determine how the phase corrections should be adjusted. Once the hybrid tracking process is complete, the monopulse antenna system is properly phase-aligned and phase tracking will be correctly employed.
    Type: Grant
    Filed: January 22, 2020
    Date of Patent: May 4, 2021
    Assignee: L-3 Communications Corp.
    Inventors: Sy Prestwich, Jeffrey B. Bench, Richard A. McNamee
  • Patent number: 10830882
    Abstract: Methods, apparatus, systems and articles of manufacture are disclosed for distributed, multi-node, low frequency radar systems for degraded visual environments. An example system includes a transmitter to transmit a radar signal. The example system includes a distributed network of radar receivers to receive the radar signal at each receiver. The example system includes a processor to determine a first range and a first angular position of a background point based on return time, wherein the first range and the first angular position are included in first data; determine a second range and a second angular position of the background point based on doppler shift, wherein the second range and the second angular position are included in second data; determine a refined range and a refined angular position, wherein the refined range and refined angular position are included in third data, and generate a radar map based on third data.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: November 10, 2020
    Assignee: GE Aviation Systems, LLC
    Inventor: Dean Shollenberger
  • Patent number: 10705201
    Abstract: An enhanced vision method or a weather radar system can be used with an aircraft and includes an antenna and a control circuit. The control circuit is configured to provide radar beams via the antenna toward external surroundings and is configured to receive radar returns. The control circuit is configured to process a collection of radar measurements from the radar returns, wherein each of the radar measurements is associated with a location determined using an antenna position, an antenna attitude, a beam sharpening angle, and a range. The radar measurements are processed to determine power density per grid cell associated with the power and location of the radar measurements, and the power density per grid cell is used to provide an image associated with the power and location of the radar measurements.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: July 7, 2020
    Assignee: Rockwell Collins, Inc.
    Inventors: Richard D. Jinkins, Richard M. Rademaker, Daniel L. Woodell
  • Patent number: 10705198
    Abstract: In accordance with an embodiment, a method of monitoring an air flow includes performing a plurality of radar measurements using a millimeter-wave radar sensor with a line of sight having a component perpendicular to a direction of an air flow, detecting an object in the air flow based on the plurality of radar measurements, calculating a displacement of the object and a size of the object based on the plurality of radar measurements, estimating a velocity of the object based on the calculated displacement, and calculating a risk metric based on the calculated size of the object and estimated velocity of the object.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: July 7, 2020
    Assignee: INFINEON TECHNOLOGIES AG
    Inventors: Avik Santra, Jagjit Singh Bal
  • Patent number: 10615890
    Abstract: Phase correction systems and methods capable of operating in a deployed antenna system are provided. The phase correction system includes a signal generator and a signal coupler. The signal coupler injects a signal at an end of a signal line adjacent an antenna element. Changes in an effective length of the signal line can be detected at a controller that monitors characteristics of the injected signal after it has passed through the signal line. The system can adapt to detected changes in the electrical length by controlling an adjustable phase shifter provided in line with the signal line or by applying suitable post-processing.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: April 7, 2020
    Assignee: Ball Aerospace & Technologies Corp.
    Inventors: Gordon C. Wu, Cynthia Wallace, David W. Draper
  • Patent number: 10598779
    Abstract: A radar is equipped with a main antenna having three radiation patterns, sum, difference and control, corresponding to the antenna, the radar comprises an auxiliary antennal device, composed of an antenna and of a rear radiating element which is situated at the rear of the antenna, fixed above the antenna and coupling means, the auxiliary antennal device: having three radiation patterns, sum, difference and control, the control pattern ensured for the direction opposite to the antenna by the rear radiating element; the antenna inclined to guarantee a maximum gain of its sum pattern in the elevational domain (60°-90°).
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: March 24, 2020
    Assignee: THALES
    Inventor: Philippe Billaud
  • Patent number: 10591584
    Abstract: A system and method perform calibration of a radar system on a mobile platform. A position of the platform is obtained along with a relative position of one or more stationary objects from the platform using the position of the platform and a mapping algorithm as ground truth and one or more radar parameters regarding the one or more stationary objects using the radar system, the one or more radar parameters including an angle estimate. The method includes determining a correction matrix based on the one or more parameters and the ground truth, and obtaining corrected received signals from subsequent received signals of the radar system based on the correction matrix.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: March 17, 2020
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Oded Bialer, Igal Bilik
  • 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: 10585172
    Abstract: The distinguishing of rain echoes from ground echoes is performed by an analysis of the attenuation of the radar echoes, a radar echo being classed as a rain echo if its attenuation on a logarithm scale as a function of distance fluctuates around an affine straight line according to a given statistical law.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: March 10, 2020
    Assignee: THALES
    Inventors: Cyrille Enderli, Mathias Lombard, Marie-Françoise Schaub
  • Patent number: 10473780
    Abstract: In an example method, a vehicle configured to operate in an autonomous mode could have a radar system used to aid in vehicle guidance. The method could include a plurality of antennas configured to transmit and receive electromagnetic signals. The method may also include a one or more sensors configured to measure a movement of the vehicle. A portion of the method may be performed by a processor configured to: i) determine adjustments based on the movement of the vehicle; ii) calculate distance and direction information for received electromagnetic signals; and iii) recover distance and direction information for received electromagnetic signals with the adjustments applied. The processor may be further configured to adjust the movement of the autonomous vehicle based on the distance and direction information with adjustments applied.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: November 12, 2019
    Assignee: Waymo LLC
    Inventor: Adam Brown