AIS電波の回折伝搬

URI http://harp.lib.hiroshima-u.ac.jp/jcga/metadata/12260
ファイル
タイトル
AIS電波の回折伝搬
別タイトル
The Diffraction Propagation of AIS Radio Wave
著者
氏名 山本 淳
ヨミ ヤマモト アツシ
別名 Atsushi Yamamoto
キーワード
Diffraction loss,Diffracted wave, AIS
抄録

Compared to radar, AIS has lower frequency and two stations(ships) not in line-of-sight may be able to communicate by diffracted wave. From the viewpoint of grasping the movement of another ship, which is the original purpose of AIS, non-line-of-sight propagation due to mountain diffraction is investigated in this study. Using the AIS data obtained at Japan Coast Guard Academy, the different states of the obstacles on propagation path, when it was able to receive
and when it was not possible, are investigated. The diffraction losses of some different conditions are calculated and compared. We aim to contribute to maritime traffic safety by estimating the receivable condition using the results.

掲載雑誌名
海上保安大学校研究報告, 理工学系
61
1
開始ページ
9
終了ページ
17
出版年月日
2018-03-31
出版者
海上保安大学校
ISSN
0287-2951
NCID
AN10088865
責任DOI
本文言語
日本語
資料タイプ
紀要論文
著者版フラグ
出版社版
ソートキー
02
区分
jcga