公开(公告)号：US10690750B2

公开(公告)日：2020-06-23

申请号：US15413753

申请日：2017-01-24

Applicant: GM Global Technology Operations LLC

Inventor： Igal Bilik ,  Alexander Pokrass ,  Shahar Villeval

IPC: G01S7/40 ,  G01S13/87 ,  G01S13/931 ,  G01S13/34 ,  G01S13/00

Abstract: A method of synchronizing a plurality of spatially distributed multi-input multi-output (MIMO) radar systems includes designating one of the plurality of MIMO radar systems that includes a linear frequency modulator as a master MIMO radar system, and designating each of the other plurality of MIMO radar systems as slave MIMO radar systems. Each of the slave MIMO radar systems receives an output of the linear frequency modulator. A synchronization signal is sent from the linear frequency modulator through the modulator splitter to each of the slave MIMO radar systems over respective cables, and a return signal is sent from each of the slave MIMO radar systems to the master MIMO radar system over the respective cables. A time delay is determined between the master MIMO radar system and each of the slave MIMO radar systems based on a frequency difference between the synchronization signal and the respective return signal.

公开(公告)号：US20200150257A1

公开(公告)日：2020-05-14

申请号：US16189045

申请日：2018-11-13

Applicant: GM Global Technology Operations LLC

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

IPC: G01S13/28 ,  H04B7/0413 ,  G01S7/02 ,  G01S13/93

Abstract: A system and method to generate a family of orthogonal signals for a code division multiple access (CDMA) radar system involve selecting a first signal of the family of orthogonal signals for transmission by one of a plurality of transmitters of the radar system. The method includes using an algorithm to determine a second signal of the family of orthogonal signals. The algorithm uses cross-correlation values between candidate signals for consideration as the second signal of the family of orthogonal signals and the first signal. The method also includes transmitting the first signal of the family of orthogonal signals and the second signal of the family of orthogonal signals simultaneously from two different transmitters, and obtaining and processing reflections resulting from transmission of the first signal of the family of orthogonal signals and the second signal of the family of orthogonal signals.

公开(公告)号：US20200049810A1

公开(公告)日：2020-02-13

申请号：US16101870

申请日：2018-08-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Oren Longman ,  Shahar Villeval ,  Igal Bilik

IPC: G01S13/58 ,  G01S7/295

Abstract: A vehicle, radar system for a vehicle, and method of determining a radial velocity of an object via the radar system. The radar system includes a transmitter, receiver and processor. The transmitter transmits a source signal towards an object, and the receiver for receives a reflection of the source signal from the object. The processor obtains a Doppler measurement related to a radial velocity of the object, wherein the Doppler measurement includes a Doppler ambiguity, obtains a range walk rate for the radial velocity of the object, and resolves the Doppler ambiguity of the Doppler measurement using the range walk rate to obtain the radial velocity of the object.

公开(公告)号：US20200041636A1

公开(公告)日：2020-02-06

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 ,  G01S7/03 ,  G01S13/93

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.

公开(公告)号：US10527713B2

公开(公告)日：2020-01-07

申请号：US15450549

申请日：2017-03-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Igal Bilik ,  Alexander Pokrass ,  Shahar Villeval

IPC: G01S7/40 ,  G01S13/93

Abstract: A method of calibrating a radar system of a vehicle is disclosed. A source signal is transmitted from a transmitter at a target at a selected location from the radar system. An echo signal is received as a reflection of the source signal from the target at an in-phase channel and quadrature channel of a receiver. A range space for the echo signal is obtained that includes a target peak corresponding to the target, wherein the range space includes a ghost peak for the target resulting from an IQ difference between the in-phase and quadrature channels. The IQ difference between the in-phase and quadrature channels is adjusted to reduce an amplitude of the ghost frequency peak.

公开(公告)号：US20190391229A1

公开(公告)日：2019-12-26

申请号：US16013079

申请日：2018-06-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Oren Longman ,  Shahar Villeval ,  Igal Bilik ,  Evgeny Tsalolikhin

IPC: G01S7/03 ,  H01Q1/32 ,  H01Q21/22 ,  H01Q3/34 ,  G01S13/89 ,  G01S13/93

Abstract: A multi-mode radar antenna apparatus is provided. The apparatus includes a transmitting antenna section comprising a first plurality of transmitting antennas configured to a transmit a steerable mode signal, a second plurality of transmitting antennas configured to a transmit an imaging mode signal, and a third plurality of transmitting antennas configured to a transmit an imaging mode signal and a steerable mode signal, and a receiving antenna section comprising a plurality of receiving antennas.

公开(公告)号：US20180210067A1

公开(公告)日：2018-07-26

申请号：US15413753

申请日：2017-01-24

Applicant: GM Global Technology Operations LLC

Inventor： Igal Bilik ,  Alexander Pokrass ,  Shahar Villeval

IPC: G01S7/40 ,  G01S13/87

CPC classification number: G01S7/4004 ,  G01S13/003 ,  G01S13/343 ,  G01S13/87 ,  G01S13/931

Abstract: A method of synchronizing a plurality of spatially distributed multi-input multi-output (MIMO) radar systems includes designating one of the plurality of MIMO radar systems that includes a linear frequency modulator as a master MIMO radar system, and designating each of the other plurality of MIMO radar systems as slave MIMO radar systems. Each of the slave MIMO radar systems receives an output of the linear frequency modulator. A synchronization signal is sent from the linear frequency modulator through the modulator splitter to each of the slave MIMO radar systems over respective cables, and a return signal is sent from each of the slave MIMO radar systems to the master MIMO radar system over the respective cables. A time delay is determined between the master MIMO radar system and each of the slave MIMO radar systems based on a frequency difference between the synchronization signal and the respective return signal.

公开(公告)号：US20180113191A1

公开(公告)日：2018-04-26

申请号：US15334866

申请日：2016-10-26

Applicant: GM Global Technology Operations LLC

Inventor： Shahar Villeval ,  Igal Bilik

IPC: G01S7/02 ,  G01S13/93

CPC classification number: G01S7/023 ,  G01S13/343 ,  G01S13/931 ,  G01S2013/9375

Abstract: A radar system mounted on a platform includes a transmitter turned off during a silent interval, and a receiver to receive one or more signals resulting from transmission by one or more other radars that transmit linear frequency modulated signals during the silent interval. A processor estimates parameters of the one or more other radars. The parameters include bandwidth and slope of the respective linear frequency modulated signal and the parameters are used to modify a transmitted signal or the processing by the radar system.

公开(公告)号：US20170293024A1

公开(公告)日：2017-10-12

申请号：US15092759

申请日：2016-04-07

Applicant: GM Global Technology Operations LLC

Inventor： Shahar Villeval ,  Igal Bilik ,  Joseph Tabrikian

IPC: G01S13/52 ,  G08G1/16 ,  G01S13/86 ,  G01S13/72 ,  G01S13/58

CPC classification number: G01S13/52 ,  G01S13/42 ,  G01S13/58 ,  G01S13/72 ,  G01S13/865 ,  G01S13/867 ,  G01S13/878 ,  G01S13/931 ,  G01S2013/0236 ,  G08G1/166

Abstract: A cognitive transmission switching array radar system to determine a location of a target and method of performing cognitive transmission switching with an array radar system involve N transmit antenna elements. Aspects include obtaining a crude estimation for the location of the target, and selecting M channels for transmission based on the crude estimation, the M channels corresponding with a subset of the N transmit antenna elements. Processing reflections resulting from the M channels is done to determine the location of the target.

公开(公告)号：US11035945B2

公开(公告)日：2021-06-15

申请号：US16387998

申请日：2019-04-18

Applicant: GM Global Technology Operations LLC

Inventor： Tzvi Philipp ,  Shahar Villeval ,  Igal Bilik ,  Jeremy A. Salinger ,  Shuqing Zeng

IPC: G01S13/58 ,  G05D1/02 ,  G01S13/86 ,  G01S13/931 ,  G01S13/02 ,  G01S13/44 ,  G01S13/00

Abstract: System and method of controlling operation of a device in real-time. The system includes an optical sensor having a steerable optical field of view for obtaining image data and a radar unit having a steerable radar field of view for obtaining radar data. A controller may be configured to steer a first one of the optical sensor and the radar unit to a first region of interest and a second one of the optical sensor and the radar unit to the second region of interest. The controller may be configured to steer both the optical sensor and the radar unit to the first region of interest. The radar data and the image data are fused to obtain a target location and a target velocity. The controller is configured to control operation of the device based in part on at least one of the target location and the target velocity.