Study on Helicopter-based Fluorescence LIDAR for Detection of Spilled Oil in Water

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  • ヘリコプター搭載型蛍光ライダーによる流出油のモニタリングについて
  • ヘリコプター トウサイガタ ケイコウ ライダー ニ ヨル リュウシュツユ ノ モニタリング ニ ツイテ

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This paper describes on the developed helicopter-based fluorescence LIDAR, consisted of Nd:YAG laser and the ICCD camera, to detect spilled oil over the sea day and night. We discriminate spilled oil from water by comparing spectrum of images taken on site with the database which contains fluorescence spectra of oil of various thickness, fluorescence spectra of seawater, and Raman scattering from water. This procedure is installed in on-board monitoring system. The results of airborne tests of the whole LIDAR system show that the fluorescence LIDAR is effective in observing spilled oil over the sea. The installed procedure is precisely evaluated with the data observed over the Atlantic Ocean of France and with the database. The results indicate that the installed procedure can discriminate oil kind from seawater but still needs to improve the accuracy of thickness of oil film in the database and to add fluorescence spectra of drifting substances such as wood to the database.

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