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24GHz FMCW Radar Module for Pedestrian Detection in Crosswalks
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- Authors
- You-Sun Won, Dongseung Shin, Miryong Park, Sohee Jung, Jaeho Lee, Cheolhyo Lee, Yunjeong Song
- Issue Date
- 2019-05
- Citation
- IEICE Transactions on Electronics, v.E102-C, no.5, pp.416-419
- ISSN
- 1745-1353
- Publisher
- 일본, 전자정보통신학회 (IEICE)
- Language
- English
- Type
- Journal Article
- Abstract
- This paper reports a 24 GHz 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 24.15 GHz, a bandwidth of 200 MHz, a chirp length of 80 μs, and a pulse repetition interval of 320 μs. The radar module can detect a pedestrian on a crosswalk with a width of 4 m and a length of 14 m. The radar outputs the range, angle, and speed of the detected pedestrians every 50 ms by radar signal processing and consumes 7.57 W from 12 V power supply. The size of the radar module is 110 × 70 mm2.
- KSP Keywords
- 15 GHz, 2.4 GHz, Center frequency, FMCW Radar, ISM band, Micro control unit(MCU), RF Transceiver, Radar signal Processing, continuous wave(CW), frequency modulated continuous wave(FMCW), pedestrian detection