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公开(公告)号：US20210278498A1
公开(公告)日：2021-09-09
申请号：US17330604
申请日：2021-05-26
Applicant: Texas Instruments Incorporated
Inventor： Jasbir Singh Nayyar , Brian Paul Ginsburg , Sudipto Bose , Murtaza Ali
Abstract: A cascaded radar system is provided that includes a first radar system-on-a-chip (SOC) operable to perform an initial portion of signal processing for object detection on digital beat signals generated by multiple receive channels of the radar SOC, a second radar SOC operable to perform the initial portion of signal processing for object detection on digital beat signals generated by multiple receive channels in the radar SOC, and a processing unit coupled to the first radar SOC and the second radar SOC to receive results of the initial portion of signal processing from each radar SOC, the processing unit operable to perform a remaining portion of the signal processing for object detection using these results.
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公开(公告)号：US10302741B2
公开(公告)日：2019-05-28
申请号：US15089956
申请日：2016-04-04
Applicant: Texas Instruments Incorporated
Inventor： Adeel Ahmad , Dan Wang , Muhammad Zubair Ikram , Murtaza Ali
Abstract: An FMCW radar is used to detect live objects by processing the matched, filtered radar return on a frame by frame basis. An FFT cross correlation coefficient is computed, followed by computing a modified geometric mean of the absolute value of the cross correlation coefficients. The modified geometric mean is then compared to a preset threshold to determine whether the object is moving or is stationary.
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3.发明申请公开(公告)号：US20170090016A1
公开(公告)日：2017-03-30
申请号：US15145091
申请日：2016-05-03
Applicant: Texas Instruments Incorporated
Inventor： Muhammad Zubair Ikram , Murtaza Ali
IPC: G01S7/40
CPC classification number: G01S7/4004 , G01S3/023 , G01S7/4026 , G01S13/931 , G01S19/235 , G01S2013/0245
Abstract: This invention is present an iterative method for joint antenna array calibration and direction of arrival estimation using millimeter-wave (mm-Wave) radar. The calibration compensates for array coupling, phase, and gain errors and does not require any training data. This method is well suited for applications where multiple antenna elements are packaged in a chip and where offline calibration is either expensive or is not possible. This invention is also effective when the array coupling is a function of direction of arriving waves from the object. It is also applicable to any two-dimensional array shape. Real experiment results demonstrate the viability of the algorithm using real data collected from a four-element array.
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公开(公告)号：US09429645B2
公开(公告)日：2016-08-30
申请号：US14684777
申请日：2015-04-13
Applicant: Texas Instruments Incorporated
Inventor： Domingo G. Garcia , Mohamed Mansour , Murtaza Ali
CPC classification number: G01S7/52 , G06F17/148
Abstract: An apparatus is provided. In the apparatus, a demultiplexer is configured to receive an input signal, and each of a plurality of sample buffers are coupled to the demultiplexer. A first multiplexer is coupled to each of the sample buffers. A filter is coupled to the first multiplexer. A bypass delay circuit is coupled to the first multiplexer, and a second multiplexer is coupled to the filter and the bypass delay circuit.
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公开(公告)号：US20160103213A1
公开(公告)日：2016-04-14
申请号：US14877888
申请日：2015-10-07
Applicant: Texas Instruments Incorporated
Inventor： Muhammad Zubair Ikram , Murtaza Ali
CPC classification number: G01S13/42 , G01S13/584 , G01S13/723 , G01S13/931
Abstract: A method for tracking objects in three dimensions in a radar system is provided that includes receiving spherical coordinates of an estimated location of each object of a plurality of detected objects, a range rate of each object, and variances for the spherical coordinates and the range rate of each object, determining whether or not each object is currently being tracked, updating a tracking vector for an object based on the object spherical coordinates, range rate, and variances when the object is currently being tracked, and initializing a tracking vector for an object when the object is not currently being tracked, wherein a tracking vector for an object is a process state vector for an extended Kalman filter designed to track an object, elements of the tracking vector including Cartesian coordinates of the object location, the object velocity in three directions, and the object acceleration in three directions.
Abstract translation: 提供了一种用于在雷达系统中跟踪三维物体的方法，其包括接收多个检测对象的每个对象的估计位置的球面坐标，每个对象的范围速率，以及球面坐标和范围速率的方差 确定每个对象当前是否正在被跟踪，当对象当前被跟踪时，基于对象球坐标，范围速率和方差来更新对象的跟踪向量，以及初始化对象的跟踪向量 当对象当前未被跟踪时，其中对象的跟踪向量是被设计为跟踪对象的扩展卡尔曼滤波器的处理状态向量，包括对象位置的笛卡尔坐标的跟踪矢量的元素，三个对象速度 方向，物体加速三个方向。
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Patent Agency Ranking
公开(公告)号：US20150219754A1
公开(公告)日：2015-08-06
申请号：US14684777
申请日：2015-04-13
Applicant: Texas Instruments Incorporated
Inventor： Domingo G. Garcia , Mohamed Mansour , Murtaza Ali
IPC: G01S7/52
CPC classification number: G01S7/52 , G06F17/148
Abstract: An apparatus is provided. In the apparatus, a demultiplexer is configured to receive an input signal, and each of a plurality of sample buffers are coupled to the demultiplexer. A first multiplexer is coupled to each of the sample buffers. A filter is coupled to the first multiplexer. A bypass delay circuit is coupled to the first multiplexer, and a second multiplexer is coupled to the filter and the bypass delay circuit.
Abstract translation: 提供了一种装置。 在该装置中，解复用器被配置为接收输入信号，并且多个采样缓冲器中的每一个被耦合到解复用器。 第一多路复用器耦合到每个采样缓冲器。 滤波器耦合到第一多路复用器。 旁路延迟电路耦合到第一多路复用器，并且第二多路复用器耦合到滤波器和旁路延迟电路。
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公开(公告)号：US11054913B2
公开(公告)日：2021-07-06
申请号：US16719616
申请日：2019-12-18
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Gregory Jan Malysa , Murtaza Ali , Dan Wang , Lorin Paul Netsch
IPC: G06F3/0487 , G06F3/01 , G01S13/34 , G01S13/58 , G01S7/41 , G06F3/03 , G06K9/62 , G06K9/00 , G01S7/35 , G06N7/00
Abstract: A system includes a frequency modulated continuous wave (FMCW) transceiver, a processor, and a memory. The memory stores program instructions that, when executed by the processor, cause the system to receive a signal representative of an FMCW signal reflected from an object of interest, apply a first Fourier transform to the signal to obtain range data, identify a subset of the range data corresponding to a region of interest, apply a second Fourier transform on the identified subset of the range data to obtain velocity data corresponding to the identified subset of the range data, and identify a gesture performed by the object of interest based on at least a portion of velocity data.
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公开(公告)号：US10534083B2
公开(公告)日：2020-01-14
申请号：US15458054
申请日：2017-03-14
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Udayan Dasgupta , David P. Magee , Murtaza Ali
Abstract: Systems and methods for color Doppler imaging in an ultrasound imaging system are disclosed herein. An ultrasound imaging system includes color Doppler imaging circuitry. The color Doppler imaging circuitry is configured to estimate flow parameters. The imaging circuitry includes a radio frequency (“RF”) demodulator configured to produce in-phase and quadrature components of an ultra-sound data vector. The RF demodulator includes a table in memory that stores interleaved sine and cosine values. The RF demodulator maintains an index value for the table having higher precision than is used to index the table. The RF demodulator rounds the index value for each access of the table. Each table access retrieves a sine value and a cosine value.
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公开(公告)号：US20170184720A1
公开(公告)日：2017-06-29
申请号：US15458054
申请日：2017-03-14
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Udayan Dasgupta , David P. Magee , Murtaza Ali
Abstract: Systems and methods for color Doppler imaging in an ultrasound imaging system are disclosed herein. An ultrasound imaging system includes color Doppler imaging circuitry. The color Doppler imaging circuitry is configured to estimate flow parameters. The imaging circuitry includes a radio frequency (“RF”) demodulator configured to produce in-phase and quadrature components of an ultra-sound data vector. The RF demodulator includes a table in memory that stores interleaved sine and cosine values. The RF demodulator maintains an index value for the table having higher precision than is used to index the table. The RF demodulator rounds the index value for each access of the table. Each table access retrieves a sine value and a cosine value.
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公开(公告)号：US11921229B2
公开(公告)日：2024-03-05
申请号：US17479002
申请日：2021-09-20
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Muhammad Zubair Ikram , Adeel Ahmad , Dan Wang , Murtaza Ali
IPC: G01S13/44 , G01S7/35 , G01S13/34 , G01S13/931
CPC classification number: G01S7/352 , G01S13/34 , G01S13/343 , G01S13/931
Abstract: An apparatus, including processing unit (PU) cores and computer readable storage devices storing machine instructions for determining a distance between a target object and a radar sensor circuit. The PU cores receive a beat signal generated by the radar sensor circuit and compensate for a phase difference between the received beat signal and a reconstruction of the received beat signal to obtain a phase compensated beat signal. The phase compensated beat signal is then filtered to remove spurious reflections by demodulating the phase compensated beat signal using an estimated frequency of the phase compensated beat signal. The PU cores then apply a low pass filter to the demodulated phase compensated beat signal, resulting in a modified beat signal. The PU cores then determine the distance between the target object and the radar sensor circuit using the modified beat signal.
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