公开(公告)号：US20230200672A1

公开(公告)日：2023-06-29

申请号：US18085817

申请日：2022-12-21

Applicant: Korea Electronics Technology Institute

Inventor： Sung Ho LEE ,  Min Geon SHIN ,  Yong Chul JUNG

IPC: A61B5/05 ,  A61B5/0205 ,  A61B5/00

CPC classification number: A61B5/05 ,  A61B5/0205 ,  A61B5/7203 ,  A61B5/7246 ,  A61B5/725 ,  A61B5/7257 ,  A61B5/024

Abstract: There is provided an FMCW radar target detection method for vital signal detection. A method for detecting vital signals by using radar selects a range bin where there are accurate vital signals by using a correlation between a phase change profile of an IF signal caused by a minute motion, and a target signal intensity change profile, so that accuracy of estimation of vital signals can be enhanced through exact tracking of a person (target). In addition, clutter may be exactly removed by utilizing a phase unwrapping technique which is adaptive to an upper body motion change compared to a 180-degree fixed phase unwrapping technique.

公开(公告)号：US20230314565A1

公开(公告)日：2023-10-05

申请号：US17940054

申请日：2022-09-08

Applicant: Korea Electronics Technology Institute

Inventor： Sung Ho LEE ,  Kang Il CHO ,  Yong Chul JUNG

IPC: G01S7/40 ,  G01S13/34

CPC classification number: G01S7/4056 ,  G01S13/34

Abstract: There are provided a radar signal processing method with a clutter suppression calibration function, and a radar sensor applying the same. A radar sensor according to an embodiment of the disclosure includes: a transmitter configured to transmit a radar signal; a receiver configured to receive a reflected radar signal; a mixer configured to down-convert the radar signal received through the receiver into an IF signal; a memory configured to store clutter information; a restoring unit configured to restore a clutter signal from the clutter information stored in the memory; and a calculator configured to remove a clutter signal from the IF signal down-converted at the mixer, by using the clutter signal restored at the restoring unit. Accordingly, it is easy to detect a radar target by removing objects other than a target easily in various indoor environments, and an SNR and a dynamic range may increase.