公开(公告)号：US20190178987A1

公开(公告)日：2019-06-13

申请号：US16201726

申请日：2018-11-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Muhammad Zubair IKRAM ,  Adeel AHMAD ,  Dan WANG ,  Murtaza ALI

IPC: G01S7/35 ,  G01S13/34

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.

公开(公告)号：US20220206109A1

公开(公告)日：2022-06-30

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: G01S7/35 ,  G01S13/34 ,  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.

公开(公告)号：US20160054438A1

公开(公告)日：2016-02-25

申请号：US14833916

申请日：2015-08-24

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sujeet Milind PATOLE ,  Anand DABAK ,  Lei DING ,  Murtaza ALI

IPC: G01S13/36 ,  G01S7/41 ,  G01S7/35 ,  G01S13/34

Abstract: A frequency modulated continuous wave (FMCW) radar system that includes a transceiver coupled to an analog to digital converter (ADC), and a digital signal processor (DSP) coupled to the ADC. The transceiver is configured to transmit a plurality of FMCW chirps, receive a plurality of reflected FMCW chirps, and mix the plurality of reflected FMCW chirps with at least one of the FMCW chirps to generate a plurality of beat signals. The reflected FMCW chirps are the FMCW chirps after being reflected off of a target object. The ADC is configured to convert the beat signals into a plurality of digital chirps. The DSP is configured to receive the digital chirps and quantify a plurality of vibration parameters for the target object based on a comparison of phase information in a frequency domain between one of the plurality of FMCW chirps and one of the plurality of digital chirps.

Abstract translation: 包括耦合到模数转换器（ADC）的收发器和耦合到ADC的数字信号处理器（DSP）的频率调制连续波（FMCW）雷达系统。 收发器被配置为发送多个FMCW啁啾声，接收多个反射的FMCW啁啾声，并且将多个反射的FMCW啁啾与至少一个FMCW啁啾声混合以产生多个拍子信号。 反射的FMCW啁啾是从目标对象反射后的FMCW啁啾声。 ADC被配置为将拍频信号转换成多个数字线性调频脉冲。 DSP被配置为基于多个FMCW啁啾中的一个与多个数字啁啾中的一个之间的频域中的相位信息的比较来接收数字啁啾并量化用于目标对象的多个振动参数。