公开(公告)号：US10705202B2

公开(公告)日：2020-07-07

申请号：US15409986

申请日：2017-01-19

Applicant: GM Global Technology Operations LLC

Inventor： Shmuel Nedjar ,  Igal Bilik ,  Shahar Villeval

IPC: G01S13/90 ,  G01S13/931

Abstract: A system and method to achieve angular ambiguity resolution in a two-dimensional Doppler synthetic aperture radar system include transmitting pulses using a plurality of transmit elements during movement of a platform on which the system is mounted. Reflections are received from a target resulting from the pulses and the reflections are processed to determine a Doppler measurement. The processing includes isolating movement of the target in the Doppler measurement, and determining a target azimuth angle and a target elevation angle to the target based on an iterative process that includes estimating the target elevation angle or the target azimuth angle and then determining the target azimuth angle or the target elevation angle, respectively, based on a beamforming matrix. The beamforming matrix indicates amplitude and phase at each azimuth angle and each elevation angle among a set of azimuth angles and a set of elevation angles.

公开(公告)号：US10663581B2

公开(公告)日：2020-05-26

申请号：US15648795

申请日：2017-07-13

Applicant: GM Global Technology Operations LLC

Inventor： Stephen W. Decker ,  Jeremy P. Gray ,  Igal Bilik ,  Shuqing Zeng

IPC: G01S13/931 ,  B60Q9/00 ,  G01S13/86 ,  B60Q1/52 ,  G01S13/42 ,  G01S13/04 ,  G01S13/02 ,  G01S13/00

Abstract: An ultra-short range radar (USRR) system of a vehicle includes an object detection module configured to, based on radar signals from USRR sensors of the vehicle: identify the presence of an object that is external to the vehicle; determine a location of the object; and determine at least one of a height, a length, and a width of the object. A remedial action module is configured to, based on the location of the object and the at least one dimension of the object, at least one of: selectively actuate an actuator of the vehicle; selectively generate an audible alert via at least one speaker of the vehicle; and selectively generate a visual alert via at least one light emitting device of the vehicle.

公开(公告)号：US10591596B2

公开(公告)日：2020-03-17

申请号：US15592690

申请日：2017-05-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Alexander Pokrass ,  Igal Bilik ,  Moshe Laifenfeld

IPC: G01S13/93 ,  G01S13/931 ,  G01S7/292 ,  G01S7/35 ,  G01S13/26 ,  G01S13/34 ,  G01S13/30 ,  G01S13/58

Abstract: A system and method for obtaining a Doppler frequency of a target are disclosed. A receiver receives a first plurality of samples of a first echo signal from the target and a second plurality of samples of a second echo signal from the target. The second plurality of samples is separated from the first plurality of samples by a time period. A phase shift is determined for the duration of the time period and the phase shift is applied to the second plurality of samples. The first plurality of samples is combined with the second plurality of samples to obtain combined samples, and the Doppler frequency for the target is obtained from the combined samples.

公开(公告)号：US10585182B2

公开(公告)日：2020-03-10

申请号：US15468192

申请日：2017-03-24

Applicant: GM Global Technology Operations LLC

Inventor： Igal Bilik ,  Alexander Pokrass ,  Shahar Villeval

IPC: G01S13/58 ,  G01S13/93 ,  G01S13/931 ,  G01S13/00

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.

公开(公告)号：US20200052391A1

公开(公告)日：2020-02-13

申请号：US16059531

申请日：2018-08-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Joseph Kampeas ,  Ofer Givati ,  Igal Bilik ,  Igal Kotzer

IPC: H01Q1/32 ,  H01Q15/24 ,  H01Q21/24 ,  G01S13/93 ,  H04B17/318

Abstract: A vehicle, radar system and a method of detecting an object. The radar system includes a transmitter, a receiver and a processor. The transmitter generates a transmitted signal having a non-linear polarization. The receiver receives a received signal that is a reflection of the transmitted signal from the object. The processor adjusts a phase of the transmitted signal at the transmitter to obtain a selected power of the received signal at the receiver.

公开(公告)号：US20200041610A1

公开(公告)日：2020-02-06

申请号：US16052922

申请日：2018-08-02

Applicant: GM Global Technology Operations LLC

Inventor： Oren Longman ,  Shachar Shayovitz ,  Shahar Villeval ,  Igal Bilik

IPC: G01S7/02 ,  G01S13/86 ,  G01S13/89 ,  G01S7/35 ,  G01S13/93

Abstract: A method of mitigating vibration in a radar system on a moving platform includes obtaining received signals resulting from reflections of transmitted signals by one or more objects in a field of view of the radar system. The received signals are a three-dimensional data cube. The method also includes processing the received signals to obtain a first three-dimensional map and second three-dimensional map, estimating the vibration based on performing a first detection using the second three-dimensional map, and cancelling the vibration from the first three-dimensional map to obtain a corrected first three-dimensional map. A corrected second three-dimensional map is obtained by further processing the corrected first three-dimensional map; and a second detection is performed using the corrected second three-dimensional map.

公开(公告)号：US10509120B2

公开(公告)日：2019-12-17

申请号：US15434492

申请日：2017-02-16

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Igal Bilik ,  Michael Slutsky ,  Shahar Villeval

IPC: G01S13/86 ,  G01S7/40 ,  G01S7/497 ,  G01S13/93 ,  G01S17/02 ,  G01S17/93 ,  H01Q15/18 ,  G01S17/66 ,  G01S17/89 ,  H01Q1/32

Abstract: A method and apparatus for calibrating a LiDAR system at a first location with a radar system at a second location. A calibration target is placed at a location and orientation with respect to the LiDAR system and the radar system. Coefficients of a plane of the calibration target are determined in a frame of reference of the LiDAR system. Coordinates of the calibration target are determined in a frame of reference of the radar system. A cost function is composed from a planar equation that includes the determined coefficients and the determined coordinates and a relative pose matrix that transforms the frame of reference of the radar system to the frame of reference of the LiDAR system. The cost function is reduced to estimate the relative pose matrix for calibration of the LiDAR system with the radar system.

公开(公告)号：US10473773B2

公开(公告)日：2019-11-12

申请号：US15334843

申请日：2016-10-26

Applicant: GM Global Technology Operations LLC

Inventor： Alexander Pokrass ,  Igal Bilik

IPC: G01S13/00 ,  G01S7/02 ,  G01S13/34 ,  G01S13/87 ,  G01S13/93

Abstract: A system and method synchronize two radars by transmitting a linear frequency modulated first signal from a first radar, receiving a first reflection at the first radar based on the first signal, transmitting a linear frequency modulated second signal from a second radar, and receiving a second reflection at the second radar based on the second signal. A fast Fourier transform is performed on the first reflection and on the second reflection to obtain a first frequency-domain signal and a second frequency-domain signal. The first frequency-domain signal and the second frequency-domain signal are converted to the time domain to obtain a first time-domain signal and a second time-domain signal. The first time-domain signal and the second time-domain signal are processed to obtain a time difference in transmission of the first signal and the second signal, and the two radars are adjusted based on the time difference to synchronize subsequent transmissions.

公开(公告)号：US20190339376A1

公开(公告)日：2019-11-07

申请号：US15971802

申请日：2018-05-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Moshe Levy-Israel ,  Igal Bilik

IPC: G01S13/58 ,  H04B7/0413 ,  G01S13/93

Abstract: A vehicle, vehicular system and a method of detecting an object. The vehicular system includes a multi-input multi-output (MIMO) radar array and a processor. The MIMO radar array is configured to obtain a radar signal from the object. The processor is configured to determine a differential phase of the radar signal for the MIMO array, generate a probability map from a sign of the differential phase, and confirm the detection of the object

公开(公告)号：US10466346B2

公开(公告)日：2019-11-05

申请号：US15815812

申请日：2017-11-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Igal Bilik ,  Ishai Eljarat ,  Alexander Pokrass

IPC: G01S13/06 ,  G01S13/66 ,  G01S7/41 ,  G01S13/89 ,  G01S13/87

Abstract: Methods and systems are provided for controlling a radar system of a vehicle. One or more transmitters are configured to transmit radar signals and tracking information is translated and coupled between radar transmitters in order to reduce target acquisition times when commencing a new track.