The structural acoustic problem of the ribbed shells in water is extensively applied in the hiding technology of the underwater navigation devices.
水下加肋壳体的结构声问题在水下航行器隐身技术中有更广阔应用。
2
Nowadays, the underwater acoustic positioning system is the mainstream of underwater navigation and localization.
从目前来看，水声定位系统是水下导航定位的主要手段。
3
The key techniques of underwater acoustic positioning and navigation are the navigation method and the precise calibration of the absolute position of the seabed transponder.