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シーカヤックのレーダ有効反射面積 Radar Cross Section of a Sea Kayak 松野, 保久 Matsuno, Yasuhisa 古川, 慎太郎 Furukawa, Shintaro 平口, 幸生 Hiraguti, Kousei 藤, 健太郎 Fuji, Kentaro 1000020244270 藤枝, 繁 Fujieda, Sigeru 1000020208771 日高, 正康 Hidaka, Masayasu 日髙, 正康 open access Radar cross section Reflection strength Sea kayak It is very important to utilize radar effectively in order to avoid collisions between vessels and sea kayaks, as well as to be able to find wrecked sea kayaks promptly. To facilitate this, radar cross sections of sea kayaks were measured in the touring, wrecked (drifting) and overturned conditions. The results obtained in this study were as follows : 1. The radar cross section was 0.503m^2-0.017m^2 for a single sea kayak, and 0.725m^2-0.011m^2 for a tandem sea kayak. 2. The radar cross section was largest when the side of sea kayak faced the radar antenna, and was smallest when its bow or stern was towards the antenna. 3. The manned sea kayak gave larger radar cross section than the unmanned ; 6dB at single and 8dB at tandem. 4. The radar cross section and the geometric cross section for each azimuth aspect angle showed almost the same patterns. 鹿児島大学 Kagoshima University 2002-12-24 jpn departmental bulletin paper VoR http://hdl.handle.net/10232/708 https://ir.kagoshima-u.ac.jp/records/3300 0453087X AN00040498 鹿児島大学水産学部紀要 Memoirs of Faculty of Fisheries Kagoshima University 51 5 9 https://ir.kagoshima-u.ac.jp/record/3300/files/KJ00004175568.pdf application/pdf 654.2 kB 2016-10-27 2002-12-24