@article{oai:ir.kagoshima-u.ac.jp:00007561,
 author = {中馬, 三千雄},
 issue = {1},
 journal = {鹿児島大学水産学部紀要=Memoirs of Faculty of Fisheries Kagoshima University},
 month = {2016-10-28},
 note = {lt is difficult to use horizontally a common fish-finder, because of the noise from the rough surface of the sea. By means of investigating the relations between the gain of the noise and the distance from its source, the author was able to design a new apparatus of echo-sounder. And, as the result of using of this apparatus, in the records of
fish-finder the noise was eliminated satisfactorily and the sound was made
clear.},
 pages = {65--70},
 title = {水平魚群探知に関する研究（第II報） : 制御利得回路の試用結果について},
 volume = {3},
 year = {}
}