抄録
IZANAGI, Oceanfloor Imaging System(OIS), is a 11/12 kHz, long-range, and shallow towed, high-speed side scan sonar system. It produces geometrically correct synoptic acoustic backscatter images and hydrographic-quality swath bathymetry charts in water depths from about 300 to 10,000 meters. The bathymetry charts are produced by using multiple rows of transducers to measure the phase delay (and thus the angle of incidence) at the towed array from all echoes from the seafloor.