SEABED DETECTING METHOD AND FISH DETECTOR

摘要

PROBLEM TO BE SOLVED: To provide a method and device for calculating by seabed detecting level at every predetermined depth at that depth and detecting the seabed by movement at the seabed detecting level, and a method and device that stores the depth at which a reflected signal including seabed reflection crosses the seabed detecting level and stably detects the seabed, by setting the difference between the maximum value of the reflected signal and the seabed detecting level at a predetermined range, when the reflected signal exceeds the detecting level.;SOLUTION: In the method of detecting the seabed, the seabed-detecting level is calculated every predetermined depth, the reflected signal amplified and detected by a receiver is compared with the seabed-detecting level calculated for each predetermined depth, and the device moves at the seabed-detecting level calculated, based on the comparison result.;COPYRIGHT: (C)2007,JPO&INPIT