魚群探知機単体記録の判別計数に関する研究-I

システム概要および構成機器

抄録

In order to furnish quantitative information to the study of the dynamics of exploited fish populations, a new method is proposed where by it is possible to count directly from the echo patterns of large-sized fish individuals such as tunas by the pattern analysis.
Contents are summarized as follows:
1) Total system was designed for the purpose mentioned above.
2) Firstly, some attachment devices (AD-0, AD-I, AD-II, AD-III) were developed and manufactured, to connecting fish detector with computer.
3) The devices were tested in several field experiments. The performances of these devices were generally found to be at a good level.
4) Process data and interrupt process program were completed for the test of hard wears.
5) The system, for collecting the field data, was completed, and from these data it is possible to analyze and count the echo patterns with a digital computer.
6) The digital data, obtained by this system, were very useful to analyze the echo patterns and to develop soft wears for the project.