公开(公告)号：US20210048695A1

公开(公告)日：2021-02-18

申请号：US16540578

申请日：2019-08-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Tzvi Philipp ,  Shahar Villeval ,  Igal Bilik

IPC: G02F1/11 ,  G02B26/12 ,  G02B26/08 ,  H04N9/31 ,  G02B26/10

Abstract: A device for imaging a region of interest includes a scanning assembly configured to steer a light beam incident thereon relative to a target location. The scanning assembly includes a first stationary optical device configured to control a circular polarization direction of the light beam and transmit the light beam to a second stationary optical device, and the second stationary optical device is configured to deflect the light beam to the target location. The device also includes an image sensor configured to generate an image based on the deflected light beam.

公开(公告)号：US10921424B2

公开(公告)日：2021-02-16

申请号：US15796912

申请日：2017-10-30

Applicant: GM Global Technology Operations LLC

Inventor： Oren Longman ,  Shahar Villeval ,  Igal Bilik

IPC: G01S7/35 ,  G01S13/34 ,  G01S7/02 ,  G01S13/42 ,  G01S13/87 ,  G01S13/32 ,  G01S13/89 ,  G01S13/931

Abstract: A radar system for a ground vehicle includes a MIMO system including a plurality of transmitters, a plurality of receivers, and a controller including an interpreter in communication with the plurality of transmitters and the plurality of receivers. The transmitters include a first transmitter and a plurality of second transmitters, and each of the transmitters includes a signal generator in communication with a transmitting antenna that is disposed to transmit a radar signal. Each of the radar signals is a linear-frequency-modulated continuous-wave (LFM-CW) radar signal including a chirp-start portion, and each of the receivers includes a receiving antenna that is disposed to receive reflected radar signals. The transmitters are controllable such that the chirp-start portions of the LFM-CW radar signals from the second transmitters have progressively increasing time delays as compared to the chirp-start portion of the LFM-CW radar signal from the first transmitter.

公开(公告)号：US20210033691A1

公开(公告)日：2021-02-04

申请号：US16529158

申请日：2019-08-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Gaston Solodky ,  Oren Longman ,  Shahar Villeval ,  Igal Bilik

IPC: G01S1/24 ,  H04B7/0413 ,  G01S7/42 ,  G01S13/93

Abstract: A hyperbolic waveform multiple-input multiple-output radar includes a generator circuit, multiple transmit circuits, a multiple-input multiple-output antenna, and multiple receive circuits. The generator circuit may be operable to generate a linear frequency modulated signal and a hyperbolic frequency modulated signal. The transmit circuits may be operable to generate multiple transmit signals by analog mixing the linear frequency modulated signal and the hyperbolic frequency modulated signal in response to a plurality of coding family parameters, wherein the transmit signals define an orthogonal family of waveforms. The multiple-input multiple-output antenna may be operable to transmit the transmit signals toward an object and receive multiple receive signals from the object. The receive circuits may be operable to determine multiple data signals in response to the receive signals, wherein the data signals are suitable to determine a distance between the multiple-input multiple-output antenna and the object.

公开(公告)号：US10754007B2

公开(公告)日：2020-08-25

申请号：US16013090

申请日：2018-06-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shahar Villeval ,  Oren Longman ,  Igal Bilik

IPC: G01S7/40 ,  G01S7/35

Abstract: A method and apparatus that compensate radar channel length variation are provided. The method includes transmitting a signal from the transmitter, determining a response of each of the receivers to the transmitted signal, and storing the determined responses; for each stored response of the stored responses, calculating a path length of the transmitted signal; for each of the transmitters, determining and storing a median receive path difference in the path length between a transmitter and each receiver; for each receiver of the receivers, determining and storing a median receive path difference in the path length between a receiver and each transmitter; and compensating for the median receive path difference and the median transmit path difference by performing a frequency shift on or time delaying a signal to be transmitted by a transmitter or received by a receiver.

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：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：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：US10310055B2

公开(公告)日：2019-06-04

申请号：US15190395

申请日：2016-06-23

Applicant: GM Global Technology Operations LLC

Inventor： Moshe Laifenfeld ,  Igal Bilik ,  Alexander Pokrass ,  Shahar Villeval ,  Eli Tzirkel-Hancock

IPC: G01S7/40 ,  G01S13/34 ,  G01S13/86 ,  G01S13/93

Abstract: A control system and method dynamically adjust radar parameters of a radar system on a platform. The method includes obtaining inputs including platform parameters, wherein the platform parameters includes speed and braking duration, and obtaining a characterization of driving behavior based on the inputs. Modifying the radar parameters is based on the inputs and the characterization, wherein the modifying includes changing a maximum range, and providing alerts to a driver of the platform is based on the radar system.

公开(公告)号：US20190086512A1

公开(公告)日：2019-03-21

申请号：US15705734

申请日：2017-09-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Igal Bilik ,  Shahar Villeval ,  Oren Longman

IPC: G01S7/40 ,  G05D1/02 ,  G01S13/93

Abstract: Methods and systems are provided for controlling a radar system of a vehicle. One or more transmitters are configured to transmit radar signals. The system and method are operative to correct an expected transmission angle of a vehicular radar in response to a Doppler shift and a road surface measurement.