Detection and Estimation of Multiple Faults on a Coaxial Cable Based on TFDR Algorithm

TFDR 기법을 이용한 Coaxial Cable상에 존재하는 다양한 결함 감지 및 추정

  • 송은석 (연세대학교 전기전자공학과) ;
  • 신용준 (텍사스 오스틴 전기컴퓨터공학과) ;
  • 육종관 (연세대학교 전기전자공학과) ;
  • 박진배 (연세대학교 전기전자공학과)
  • Published : 2003.10.01

Abstract

In this paper, we propose a high-resolution time-frequency domain reflectometry technique as a methodology of detection and estimation of faults on a wire. This method adopts the time-frequency cross correlation characteristics of the observed signal in both time and frequency domains simultaneously. The accuracy of the proposed method is verified with experiments using a RG type coaxial cable and comparing it with traditional time domain as well as frequency domain reflectometry methods. It is clearly shown here that the proposed algorithm produces excellent results compared to the conventional methods for single as well as multiple fault cables.

본 논문에서는 도선상의 결함 감지 및 추정 방법인 고분해능 시간-주파수 반사측정기법(time-frequency domain reflectometry)을 제안한다. 이 방법은 관측된 신호를 시간과 주파수 영역에서 동시에 분석 가능한 시간-주파수 상호 상관 관계(time-frequency cross correlation) 특성을 채택하였다. 제안된 방법인 TFDR의 정확도는 고주파용 coaxial cable을 가지고 실험을 통하여 기존의 방식들과 비교 검증하였다. 제안된 알고리즘의 다양한 결함들에 대한 감지 및 추정 결과, 기존의 방법에 비해 월등하다는 것을 명백히 나타내었다.

Keywords

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