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公开(公告)号：US20200081114A1
公开(公告)日：2020-03-12
申请号：US16126197
申请日：2018-09-10
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Oded Bialer , Igal Bilik
Abstract: A vehicle, radar system and method of determining an angle of arrival of an object is disclosed. A radar array generates a linear frequency modulated source signal and includes a first channel and a second channel for receiving a reflection of the source signal from the object. A processor obtains a channel response for the first radar channel and for the second radar channel over a bandwidth of the source signal, partitions the frequency band into a plurality of frequency sub-bands, determines a variation between the first and second channel responses for a selected frequency sub-band, receives a reflection of the source signal at the first channel and at the second channel, corrects at least the second channel within the frequency sub-band using the determined variation, and determines an angle of arrival for the object based on the correction within the frequency sub-band.
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公开(公告)号：US20200064440A1
公开(公告)日：2020-02-27
申请号：US16112134
申请日：2018-08-24
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Joseph Kampeas , Ofer Givati , Igal Bilik
Abstract: A vehicle, radar system for the vehicle and method for detecting an object. The radar system includes a transmitter, a receiver and a processor. The transmitter is configured to generate elliptically-polarized signals having a transmission polarization sense. The receiver configured to be receptive to signals having a reception polarization sense opposite the transmission polarization sense, thereby filtering multiply-reflected signals. The processor operates the transmitter to generate a source signal and operates the receiver to receive a reflection of the source signal from the object. The processor detects the object from the received reflection.
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公开(公告)号：US20190391231A1
公开(公告)日：2019-12-26
申请号：US16013090
申请日：2018-06-20
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Shahar Villeval , Oren Longman , Igal Bilik
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.
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公开(公告)号：US10444325B2
公开(公告)日：2019-10-15
申请号：US15374193
申请日：2016-12-09
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Alexander Pokrass , Moshe Laifenfeld , Igal Bilik
Abstract: A method and apparatus for determining a frequency of an echo signal obtained by a radar system is disclosed. The echo signal in response to a source signal of the radar system is received at a receiver. A harmonic oscillator generates a harmonic component signal, and a multiplier multiplies the echo signal with the harmonic component signal to obtain a combined signal. A Fast Fourier Transform (FFT) is performed on the combined signal to obtain a peak in a frequency space, wherein a central frequency of a frequency bin in the frequency space is shifted with respect to the frequency of the echo signal by the harmonic component signal. The frequency of the echo signal is determined from the shifted central frequency.
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公开(公告)号：US10421452B2
公开(公告)日：2019-09-24
申请号：US15450556
申请日：2017-03-06
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Igal Bilik , Shahar Villeval , Ishai Eljarat , Gonen Barkan
Abstract: A vehicle, system and method of driving the vehicle. A radar system obtains a measured location of an object in an environment of the vehicle. A processor predicts a location of the object, determines a distance between the predicted location of the object and the measured location of the object, determines a confidence level for the predicted location the object based on the determined distance, selects a tracking state for the object based on the confidence level, and drives the vehicle to avoid the object according to the tracking state of the object. The processor and radar system may be onboard the vehicle.
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Patent Agency Ranking
186.发明申请公开(公告)号：US20190250249A1
公开(公告)日：2019-08-15
申请号：US15897333
申请日：2018-02-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC , Silantrix Ltd.
Inventor： Dani Raphaeli , Oded Bialer , Igal Bilik
Abstract: A vehicle radar system, such as a multiple input multiple output (MIMO) radar system, for estimating a Doppler frequency shift and a method of using the same. In one example, a modulated signal is mixed with an orthogonal code sequence and is transmitted by a transmit antenna array with a plurality of transmitting antennas. The signals reflect off of a target object and are received by a receive antenna array with a plurality of receiving antennas. Each of the received signals, which likely includes a Doppler frequency shift, is processed and mixed with a number of frequency shift hypotheses that are intended to offset the Doppler frequency shift and result in a series of correlation values. The frequency shift hypothesis with the highest correlation value is selected and used to correct for the Doppler frequency shift so that more accurate target object parameters, such as velocity, can be obtained.
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公开(公告)号：US10379201B2
公开(公告)日：2019-08-13
申请号：US15334866
申请日：2016-10-26
Applicant: GM Global Technology Operations LLC
Inventor： Shahar Villeval , Igal Bilik
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.
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188.发明授权公开(公告)号：US10330774B2
公开(公告)日：2019-06-25
申请号：US15244577
申请日：2016-08-23
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Oded Bialer , Igal Bilik , Alexander Pokrass
IPC: G01S7/292 , G01S7/41 , G01S13/72 , G01S13/58 , G01S13/526 , G01S13/93 , G01S7/288 , G01S13/86 , G01S13/66 , G01S13/00
Abstract: The present invention generally relates to processing of electromagnetic signals, and more specifically, for a method and apparatus for managing the computational cost of radar signal processing on a vehicular radar. The system is operative to utilize a Goerzel filter to aid in determining a frequency for a radar echo. In addition the system uses a DFT operation for tracking stationary objects and a FFT operation for tracing moving objects.
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公开(公告)号：US20190137602A1
公开(公告)日：2019-05-09
申请号：US15803032
申请日：2017-11-03
Applicant: GM Global Technology Operations LLC
Inventor： Oren Longman , Shahar Villeval , Igal Bilik
CPC classification number: G01S7/352 , G01S13/32 , G01S13/42 , G01S13/931 , G01S2007/356
Abstract: A system and method to perform target detection includes transmitting frequency modulated continuous wave (FMCW) pulses as chirps from a radar system. The method also includes receiving reflections resulting from the chirps, and processing the reflections to obtain a range-chirp map for each beam associated with the transmitting. Curve detection is performed on the range-chirp map for each beam, and one or more targets is detected based on the curve detection.
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公开(公告)号：US20190137600A1
公开(公告)日：2019-05-09
申请号：US15806815
申请日：2017-11-08
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Igal Bilik , Alexander Pokrass , Shahar Villeval
Abstract: Methods and systems are provided for controlling a radar system of a vehicle. One or more transmitters are configured to transmit radar signals. A plurality of antennas or arrays are configured to operate at a common frequency and a method and system for generating random frame intervals and receiving the radar signals in response to the random frame intervals.
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