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CW 도플러 레이더를 이용한 모니터링 시스템 구현

Implementation of a Monitoring System Using a CW Doppler Radar

  • Shin, Hyun-Jun (Department of Electrical, Electronics & Communication Engineering, Korea University of Technology and Education) ;
  • Han, Byung-Hun (Department of Electrical, Electronics & Communication Engineering, Korea University of Technology and Education) ;
  • Choi, Doo-Hyun (iU Plus, Inc.) ;
  • Oh, Chang-Heon (Department of Electrical, Electronics & Communication Engineering, Korea University of Technology and Education)
  • 투고 : 2015.08.02
  • 심사 : 2015.09.18
  • 발행 : 2015.12.31

초록

본 논문에서는 기상 제약이 많은 CCTV 보완을 위해 CW 도플러 레이더를 사용하는 감시 시스템에서 두 개 이상의 물체 접근 또는 이탈 정보를 감지하기 위한 모니터링 프로그램을 개발하였으며, 물체의 접근 또는 이탈 정보를 효율적으로 감지하기 위한 알고리즘을 제안하였다. 제안하는 알고리즘은 CW 도플러 레이더에서 수신한 신호를 FFT 처리하여 실수부와 허수부로 분리 후 각 동일 주파수 마다 진폭을 합산하여 이들의 위치를 통해 접근 또는 이탈을 판단하는 방식이다. 이를 시뮬레이션 및 실험을 통해 검증하였으며, 두 개 물체의 접근 또는 이탈을 감지한 결과 정상적으로 감지하는 것을 확인할 수 있었다.

The CCTV is limited by weather conditions. To overcome this limitation, we develop a monitoring program that can sense the approach or recede of two or more objects within a surveillance system that uses a continuous-wave (CW) Doppler radar, and we proposed an algorithm to efficiently detect the approach or recede information of the object. The proposed algorithm separates the signal received by the CW Doppler radar into the real and imaginary parts using Fast Fourier Transform (FFT), and sums the amplitudes for each frequency to determine whether the objects are approaching or receding, using their locations. The algorithm is verified by simulations and experiments, which confirms that it successfully detects the approach or recede of two objects.

키워드

참고문헌

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