公开(公告)号：US20240036160A1

公开(公告)日：2024-02-01

申请号：US18325392

申请日：2023-05-30

Applicant: ALPS ALPINE CO., LTD.

Inventor： Kazunori OSHIRO ,  Hideki MASUDAYA ,  Masahiro ISHIBASHI

IPC: G01S7/35 ,  G01S7/41 ,  G01S13/88 ,  B60R22/48

CPC classification number: G01S7/356 ,  G01S7/411 ,  G01S13/88 ,  B60R22/48 ,  B60R2022/4808

Abstract: A standing wave radar includes: a transmitter to set a frequency of a transmission signal to frequencies, and output the transmission signal taking the respective frequencies in a time-division manner; a receiver to receive a reflected signal taking the frequencies in a time-division manner, the reflected signal being the transmission signal reflected by an object; and a processor to obtain reflection coefficients of the frequencies by obtaining each reflection coefficient of the transmission signal and the reflected signal taking a same frequency, for the transmission signal and the reflected signal taking the frequencies, and to execute a first inverse Fourier transform process of calculating a first distance spectrum for the object by an inverse Fourier transform on the reflection coefficients, and a first distance measurement process of determining presence of the object and calculating a distance to the object, based on the first distance spectrum.