公开(公告)号：US11555884B2

公开(公告)日：2023-01-17

申请号：US16924452

申请日：2020-07-09

Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： SeongOok Park ,  Junhyeong Park

IPC: G01S13/34 ,  G01S7/35 ,  H04B1/525 ,  G01S7/282 ,  G01S13/36 ,  H04B1/04

Abstract: A method for mitigating a leakage signal in an FMCW radar and a radar system thereof are disclosed. The method for mitigating the leakage signal in the radar system includes generating an in-phase signal and a quadrature signal for a beat signal, generating a complex signal using the in-phase signal and the quadrature signal, concentrating a phase noise of the leakage signal included in the complex signal on a stationary point, and mitigating the phase noise based on stationary point concentration (SPC) of the phase noise.

公开(公告)号：US11415692B2

公开(公告)日：2022-08-16

申请号：US16717970

申请日：2019-12-17

Applicant: Korea Advanced Institute of Science and Technology

Inventor： SeongOok Park ,  Dae-hwan Jung

IPC: G01S13/90 ,  G01S7/02 ,  G01S7/35

Abstract: A high-resolution fully polarimetric frequency modulation continuous wave (FMCW) image radar system using an RF switch and an image processing method are provided. The image radar system includes a signal generator that generates a frequency modulation signal, a transmitter that radiates the frequency modulation signal as vertical polarization and horizontal polarization using a vertically polarized transmit antenna and a horizontally polarized transmit antenna, a receiver that receives a signal in which a vertically polarized signal and a horizontally polarized signal are reflected from an object, using a vertically polarized receive antenna and a horizontally polarized receive antenna, and generates a VV/HV polarization data set and a VH/HH polarization data set based on the signal received via the vertically polarized receive antenna and the horizontally polarized receive antenna, and a signal processor that obtains a fully polarimetric radar image based on bilateral symmetry correction and azimuth compression.

公开(公告)号：US11143744B2

公开(公告)日：2021-10-12

申请号：US16264785

申请日：2019-02-01

Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： SeongOok Park ,  Junhyeong Park

IPC: G01S7/35 ,  H04B1/525 ,  G01S7/02 ,  G01S7/282 ,  G01S13/34 ,  G01S13/36 ,  H04B1/04

Abstract: A method for attenuating a leakage signal in an FMCW radar system and a radar system thereof are provided. The method includes concentrating a phase noise of the leakage signal on a stationary point and attenuating the phase noise based on the concentration of the phase noise on the stationary point.