24GHz FMCW Radar Module for Pedestrian Detection in Crosswalks

You-Sun WON  Dongseung SHIN  Miryong PARK  Sohee JUNG  Jaeho LEE  Cheolhyo LEE  Yunjeong SONG  

IEICE TRANSACTIONS on Electronics   Vol.E102-C   No.5   pp.416-419
Publication Date: 2019/05/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.2018ECS6019
Type of Manuscript: BRIEF PAPER
Category: Microwaves, Millimeter-Waves
FMCW,  radar,  24GHz,  ISM band,  pedestrian,  ITS,  

Full Text: PDF(16.3MB)>>
Buy this Article

This paper reports a 24GHz ISM band radar module for pedestrian detection in crosswalks. The radar module is composed of an RF transceiver board, a baseband board, and a microcontroller unit board. The radar signal is a sawtooth frequency-modulated continuous-wave signal with a center frequency of 24.15GHz, a bandwidth of 200MHz, a chirp length of 80µs, and a pulse repetition interval of 320µs. The radar module can detect a pedestrian on a crosswalk with a width of 4m and a length of 14m. The radar outputs the range, angle, and speed of the detected pedestrians every 50ms by radar signal processing and consumes 7.57W from 12V power supply. The size of the radar module is 110×70mm2.