| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and device for calculating a seabed detection level at the depth for each predetermined depth and detecting the seabed by moving the seabed detection level, and to provide a method and device for stably detecting the seabed by storing the depth at which a reflected signal including seabed reflection crosses the seabed detection level and setting the difference between the maximum value of the reflected signal and the seabed detection level to be within a predetermined range when the reflected signal exceeds the detection level. SOLUTION: In the method and device for detecting the seabed, the seabed detection level is calculated for each predetermined depth, the reflected signal amplified/detected by a receiver is compared with the seabed detection level calculated for each predetermined depth, and the calculated seabed detection level is moved based on the comparison result. COPYRIGHT: (C)2011,JPO&INPIT |
