College of Marine Geo-sciences;
Ocean University of China;
Qingdao 266100;
China;
Laboratory for Marine Geology;
Pilot National Laboratory for Marine Science and Technology(Qingdao);
Qingdao 266237;
China;
Key Laboratory of Marine Sedimentology and Environmental Geology;
First Institute of Oceanography;
Ministry of Natural Resources;
Qingdao 266061;
China;
National Deep Sea Center;
State Oceanic Administration;
Qingdao 266237;
China;
sea-surface; acoustic; scattering; moderate; frequency; scattering; model; bistatic; backscattering; frequency; dependence;