Abstract
This paper presents results of simulation and fundamental experiments by aruminum balles, in order to adopt the Frequency Diversity Method which is a new data processing technique for Acoustic Fish Assessment System.
First we denote that the interference component of instantaneous power for received signal decreases effectively to adopt the Frequency Diversity Method.
Next we define the estimation function which expresses efficiency quantitatively of Frequency Diversity Method, and denote that interference component decreases more than -6 dB when we use three frequency bands.
Lastly we develop the Hydro Ascoustic Fish Assessment System which applies Frequency Diversity Method (using three frequency bands of 45 KHz, 50 KHz, and 55 KHz).
The results show that the received signals using aruminum balles (15mm, 30mm, 50mm) are good approximate to the value of simulation.
