レーダホーンの絶縁物の塩分附着とその影響I : 透過損失について(日本航海学会第28回講演会)

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書誌事項

タイトル別名
  • On the Effect of the Saline Deposition on the Seal of the Radar Horn-1 : On the Transmission Loss
  • レーダホーンの絶縁物の塩分附着とその影響-1-
  • レーダホーン ノ ゼツエンブツ ノ エンブン フチャク ト ソノ エイキョウ 1

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説明

The antenna horn of the marine radar is sealed by the thin plastic sheet for water and dust-proofing. The surface of the seal is exposed to the precipitation of the vapour of the sea water, the soot and the dust in the air. The salt and others deposited on the surface of the seal will cause the extra attenuation of the radar power. Here is reported the transmission loss resulted from the salinity of the surface of the horn seal. Followings are concluded: (1) The amount of the transmission loss will increase exponentially with the relative humidity. (2) The loss will not exceed 6db in the extreme case. (3) The loss is fairly small (approx. 2db) in the ordinary case.

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