FISH FINDING DEVICE, SIGNAL PROCESSING DEVICE, FISH FINDER, FISH FINDING METHOD AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To accurately locate a fish shoal.;SOLUTION: A fish finding device for finding a fish shoal on the basis of an echo signal of the ultrasonic wave that has been transmitted into the water includes: a binarization part 14; a fish shoal candidate specifying part 15; and a fish shoal range extraction part 16. The binarization part 14 binarizes data generated on the basis of the echo signal with reference to a signal level. The fish shoal candidate specifying part 15 detects continuity of data, of the binarized data, having a higher value in the signal level in a prescribed direction, and specifies a data range in which the continuity is observed. The fish shoal range extraction part 16 extracts a range of a fish shoal on the basis of the specified data range.;COPYRIGHT: (C)2014,JPO&INPIT