@article{oai:ir.kagoshima-u.ac.jp:00004786, author = {松野, 保久 and 山中, 有一}, journal = {鹿児島大学水産学部紀要=Memoirs of Faculty of Fisheries Kagoshima University}, month = {2016-10-28}, note = {The target strength measurments of model fish were conducted in a 30 tons octagonal sea water tank at Nagashima Marine Laboratory for Fisheries Science of Kagoshima University. A mold of tracurus japonicus was made of silicone rubber and three models taken the very same form externally, which have different internal strucres were made of silicone rubber by it, namely these three kinds of model fish which have only rubber i.e. homogeneity, only bones and an only air bladder respectively. This time, authors measured the target strength of these three kinds of model fish every 1° in pitch, yaw and roll respectively and used frequencies were 50 kHz and 200 kHz. From the measurment results of the aspect variation of each individual model fish target strength, we obtained each polar diagram, maximum value and average value. The consideration of these results were very complicated, so that we could not set forth in detail, especially in regard to each polar diagram. Taking a wide view of things, in general we could make the following statement. The maximum values, the mean values and the aspects of maximum value were influenced considerably of the air bladder, but it could be considered that there was little effect of the bones.}, pages = {9--20}, title = {内部構造の異なる単体魚模型の三軸方向における標的強度について}, volume = {31}, year = {} }