@article{oai:ir.kagoshima-u.ac.jp:00002121,
 author = {源河, 朝之},
 journal = {鹿児島大学水産学部紀要, Memoirs of Faculty of Fisheries Kagoshima University},
 month = {},
 note = {On the south sea fishing ground, the limit of the detective capacity of the naked eye upon the Tunny-Line during the day-time lies within 1 mile, provided the sky is clear and the sea is calm. But with the help of the Radar the limit may be made to recede to the distance of about 3 miles. And by using "Corner-Reflector" it may be made to recede to 4.5 miles. With the help of  "Daruma-Lamp  " at night, the limit of the visible range is confined within 1.5 mile at best with the exception of specially fine night. While the detective capacity of the naked eye is badly influenced by the vagueness of sight from bad weather, the detective effect of the Radar is almost always constant through various weathers. In short, the most appropriate way to protect the Tunny-Long-Line from being deprived of by the sea current may be fixed through further study of the detective effect of Radar.},
 pages = {25--30},
 title = {レーダーによる鮪延縄の探知について（第１報）},
 volume = {4},
 year = {1956}
}