Journal of Navigation and Port Research (한국항해항만학회지)

Korean Institute of Navigation and Port Research (한국항해항만학회)
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A Study on Enhancing Ship`s Radar Detecting Efficiency by Wavelet and Morphology Median Filter

Wavelet과 Morphology Median 필터를 이용한 선박용 Radar 탐지 효율 향상을 위한 연구

  • Jeong, Gi-Ryong (Division of Ship Operation Systems Engineering, College of Maritime Sciences, Korea Maritime University)
  • 정기룡 (한국해양대학교 운항시스템공학부)
  • Published : 2002.03.01
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Abstract

Irregular reflected signals on a sea surface make clutters to a ship's radar image. Clutters are similar to Gaussian white noises which are very harmful for detecting objecting at sea by a ship's radar. To remove the clutter effects, many papers show the algorithms by antenna, filters, and so on. This paper shows a new algorithm which uwes Wavelet and Morphology median filter conceps for removing clutter and enhancing image in order to detect well a distressed of being rescued ship in a rough weather condition at sea.

해면에 난반사되어 돌아오는 신호는 잡음이 되는데, 이를 클러터(Clutter)라 한다. 클러터는 레이더 화면에 백색 가우시안 잡음과 같은 형태로 나타나게 되며, 이들은 선박용 레이더의 탐지 효율을 저하 시킨다 따라서 클러터 제거를 위한 연후는 안테나의 개선 또는 여러 종류의 필터 등을 통해 환발하게 진행되고 있다. 본논문에서는 선박 레이더와 탐지 효율을 향상을 위하여, 웨이브렛(Wavelet)과 수리형태학(Morphology)의 $3{\times}3$SQ(Square) 형태소를 적용한 메디언 필터를 사용하여 조난 또는 구조 선박의 수색을 용이하게 할수 있는 알고리듬을 제안한다.

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References

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