公开(公告)号：US12032060B2

公开(公告)日：2024-07-09

申请号：US17157060

申请日：2021-01-25

Applicant: GM Global Technology Operations LLC

Inventor： Gaston Solodky ,  Ishai Eljarat ,  Igal Bilik ,  Gonen Barkan

IPC: G01S15/89 ,  G01S7/539 ,  G01S15/42 ,  G01S15/87

CPC classification number: G01S15/89 ,  G01S7/539 ,  G01S15/42 ,  G01S15/87

Abstract: A method includes obtaining an initial point cloud for each of two or more radar systems that share a common field of view. Each initial point cloud results from processing reflected energy at each of the two or more radar systems. Each point of the initial point cloud indicates one or more hypotheses for a range, a Doppler, and a direction of arrival (DOA) to an object that resulted in the reflected energy. A point cloud, obtained from the initial point cloud, has a same number of hypotheses for the range, the Doppler, and the DOA. Resolving ambiguity in the common field of view is based on the point clouds to obtain resolved and unresolved points in the common field of view. A radar image obtained from each of the two or more radar systems is used to control an aspect of operation of a vehicle.

公开(公告)号：US11967765B1

公开(公告)日：2024-04-23

申请号：US16940500

申请日：2020-07-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Hanseung Lee ,  Igal Bilik

IPC: H01Q21/00 ,  H01Q13/18

CPC classification number: H01Q21/005 ,  H01Q13/18

Abstract: An antenna system operates in a hybrid coplanar waveguide and rectangular waveguide mode. A slot array with a conductive layer is disposed on a substrate and defines a coplanar waveguide joining a number of side slots arranged in a line forming the slot array. Another substrate is spaced apart from the substrate and a ground plane is defined thereon. A defined volume waveguide is disposed between the substrates. The array is configured to radiate a radiation pattern in a hybrid mode that results from a combination of the slot array and the defined volume waveguide. The side slots may be elliptical in shape for side lobe level reduction.

公开(公告)号：US11555920B2

公开(公告)日：2023-01-17

申请号：US17082533

申请日：2020-10-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Oren Longman ,  Igal Bilik

IPC: G01S13/931 ,  G01S13/58 ,  G01S7/288 ,  G01S13/92

Abstract: Methods and systems for estimating vehicle velocity based on radar data. The methods and systems include receiving a set of range-Doppler-beam, RDB, maps from radars located on a vehicle and performing an optimization process that adjusts an estimate of vehicle velocity so as to optimize a correlation score. The optimization process includes iteratively: spatially registering the set of RDB maps based on the current estimate of vehicle velocity, determining the correlation score based on the spatially registered set of RDB maps, and outputting an optimized estimate of vehicle velocity from the optimization process when the correlation score has been optimized. The methods and systems control the vehicle based at least in part on the optimized estimate of vehicle velocity.

公开(公告)号：US11313948B2

公开(公告)日：2022-04-26

申请号：US16505107

申请日：2019-07-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Oren Longman ,  Igal Bilik ,  Shahar Villeval

IPC: G01S7/41 ,  G01S7/40 ,  G01S13/42 ,  G01S13/931

Abstract: A radar system may include a transmitter, a receiver, and a controller. The controller may calculate a received beam response spectrum based on the received reflected radar signal, detect a first maximum value of the received beam response spectrum, identify an angle corresponding to the first maximum value as a first target angle, obtain a threshold envelope based on the first maximum value and the first target angle, detect a second maximum value in a portion of the received beam response spectrum being greater than the threshold envelope, identify an angle corresponding to the second maximum value as a second target angle, and output the first target angle as the angle of arrival of the reflected radar signal from the first target and the second target angle as the angle of arrival of the reflected radar signal from the second target.

公开(公告)号：US11221395B2

公开(公告)日：2022-01-11

申请号：US16538498

申请日：2019-08-12

Applicant: GM Global Technology Operations LLC

Inventor： Mehran Mokhtari ,  Ara Kurdoghlian ,  Jongchan Kang ,  Daniel Kuzmenko ,  Emilio A. Sovero ,  Robert G. Nagele ,  Hasan Sharifi ,  Igal Bilik

IPC: G01S7/03 ,  G01S13/931 ,  H01P5/18 ,  H01P1/202

Abstract: A radar system includes a transmit section to emit a transmit signal. A chip-based front-end portion of the transmit section increases a frequency of an input signal to produce an intermediate signal and amplifies signal strength of the intermediate signal to produce the transmit signal. The frequency of the input signal is in a range of 76 gigahertz (GHz) to 80 GHz. The radar system also includes a receive section to receive a reflected signal resulting from reflection of the transmit signal by an object.

公开(公告)号：US11163053B2

公开(公告)日：2021-11-02

申请号：US16181753

申请日：2018-11-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shachar Shayovitz ,  Yonattan Menaker ,  Igal Bilik

IPC: G01S13/44 ,  G01S13/931 ,  G01S7/02 ,  G01S13/524 ,  G01S13/89

Abstract: A vehicle, radar system of the vehicle and method of operating the vehicle. A transmit antenna transmits a radio wave and a plurality of receive antennae receive echo radio waves from an object receptive to the transmitted radio wave, wherein the echo radio waves includes short-range interference. A processor generates a plurality of radar data arrays for the return signals, wherein each radar data array represents the return signal received at a corresponding receiver antennae, estimates an amount of short-range interference present in the return signal of each radar data array, subtracts the estimate of short-range interference from each of the radar data array to obtain a plurality of clutter-free radar data arrays, and detects the object using at least the plurality of clutter-free radar data arrays. A navigation system navigates the vehicle based on the detection of the object.

公开(公告)号：US11119187B2

公开(公告)日：2021-09-14

申请号：US16279286

申请日：2019-02-19

Applicant: GM Global Technology Operations LLC

Inventor： Shuqing Zeng ,  Igal Bilik ,  Yasen Hu

IPC: G01S13/58 ,  G01S7/35

Abstract: A system and method to resolve ambiguity in a radar system involve detecting one or more objects with the radar system. The detecting includes obtaining range, azimuth, and an ambiguous range rate of a first object of the one or more objects. A plurality of Kalman filters are generated with state variables that include parameters based on the range, the azimuth, and the ambiguous range rate. Each of the plurality of Kalman filters provides a different estimate for an unambiguous range rate. The method also includes updating the plurality of Kalman filters using additional detections by the radar system, selecting a selected Kalman filter from among the plurality of Kalman filters that exhibits a highest probability mass among a plurality of probability mass corresponding with and derived from the plurality of Kalman filters, and determining the unambiguous range rate of the object using the selected Kalman filter.

公开(公告)号：US11029387B2

公开(公告)日：2021-06-08

申请号：US16220482

申请日：2018-12-14

Applicant: GM Global Technology Operations LLC

Inventor： Florian G. Herrault ,  Hasan Sharifi ,  Robert G. Nagele ,  Igal Bilik

IPC: G01S7/03 ,  G01S7/282 ,  G01S7/285 ,  G01S13/931 ,  H01Q21/06

Abstract: A radar system with frequency conversion includes a signal generator configured to generate an input signal at a first frequency. A transmitting interposer is configured to receive the input signal from the signal generator. The transmitting interposer includes a transmitting front-end module configured to upconvert the input signal at the first frequency to an outgoing radar signal at a second frequency greater than the first frequency, and a transmitting antenna module having a plurality of transmitting patches configured to radiate the outgoing radar signal. A receiving interposer is configured to transmit an output signal to the signal generator. The receiving interposer includes a receiving antenna module having a plurality of receiving patches configured to capture an incoming radar signal at the second frequency, and a receiving front-end module configured to downconvert the incoming radar signal at the second frequency to the output signal at the first frequency.

公开(公告)号：US11009591B2

公开(公告)日：2021-05-18

申请号：US16264826

申请日：2019-02-01

Applicant: GM Global Technology Operations LLC

Inventor： Yaron Eshet ,  Oded Bialer ,  Igal Bilik

IPC: G01S7/41 ,  G01S13/931

Abstract: Deep learning in a radar system includes obtaining unaliased time samples from a first radar system. A method includes under-sampling the un-aliased time samples to obtain aliased time samples of a first configuration, matched filtering the un-aliased time samples to obtain an un-aliased data cube and the aliased time samples to obtain an aliased data cube, and using a first neural network to obtain a de-aliased data cube. A first neural network is trained to obtain a trained first neural network. The under-sampling of the un-aliased time samples is repeated to obtain second aliased time samples of a second configuration. The method includes training a second neural network to obtain a trained second neural network, comparing results to choose a selected neural network corresponding with a selected configuration, and using the selected neural network with a second radar system that has the selected configuration to detect one or more objects.

公开(公告)号：US10983205B2

公开(公告)日：2021-04-20

申请号：US16052940

申请日：2018-08-02

Applicant: GM Global Technology Operations LLC

Inventor： Oren Longman ,  Shahar Villeval ,  Igal Bilik

IPC: G01S13/34 ,  H01Q1/32 ,  G01S13/931 ,  G01S7/03 ,  H04L29/08

Abstract: A radar system includes one or more antennas to emit transmit signals and receive reflected signals resulting from reflection of the transmit signals by an object. The transmit signals are linear frequency modulated continuous wave (LFMCW) signals. The radar system also includes a transmission generator to generate the transmit signals. The transmission generator includes a controller to control output of a first of the transmit signals and a second of the transmit signals in succession. A time between transmission of the first of the transmit signals and the second of the transmit signals is less than a duration of a stabilization period of a first oscillator used to generate the first of the transmit signals.