The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Performance Improvement of STDR Scheme Employing Sign Correlator

부호 상관기를 활용한 STDR 기법의 탐지 성능 개선

  • Han, Jeong Jae (The Catholic University of Korea, School of Information, Communications, and Electronics Engineering (ICEE), Communication Signal Processing (CSP) Lab.) ;
  • Noh, Sanguk (The Catholic University of Korea, School of Computer Science and Information Engineering (CSIE), Center for Intelligent Systems) ;
  • Park, So Ryoung (The Catholic University of Korea, School of ICEE, CSP Lab.)
  • Received : 2015.04.13
  • Accepted : 2015.05.08
  • Published : 2015.06.30
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Abstract

This paper proposes an enhanced scheme adding a sign detector at the front of the correlator in STDR (sequence time domain reflectometry) system. We have executed simulations to show the improvement of detection performance in two fault types and various fault locations. Consequently, it can be shown that the proposed scheme improves the detection performance of the location of far-fault without increasing the computational complexity.

이 논문에서는 STDR(sequence time domain reflectometry) 기법의 상관기 앞단에 부호기를 넣음으로써 계산량을 증가시키지 않고도 원거리 고장의 위치 탐지 성능을 향상시킬 수 있는 방법을 제안한다. STDR 기법은 PN 수열을 인가하여 시간 영역 상관(time domain correlation)으로 고장 위치를 탐지하는 기법이므로, 상관기 앞단에 부호기를 넣음으로써 고장 위치에서 반사된 신호를 STDR 기법의 인가 신호에 가깝게 복원시켜 상관 값을 증가시킬 수 있다. 제안한 기법을 사용하여 원거리 고장에서 고장위치 탐지 성능을 크게 개선시킬 수 있음을 모의실험으로 확인한다.

Keywords

References

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  1. 부호 제거기를 활용한 STDR/SSTDR 기법의 탐지 성능 개선 vol.41, pp.6, 2015, https://doi.org/10.7840/kics.2016.41.6.620