The underwater terrain is rough with underwater mountains and valleys, the BEA has said.
而海底地形主要由水下山脉与山谷组成。
The data from GPS is in the WGS-84 coordinate system, the data of underwater terrain point, however, is subjected to an engineering coordinate system.
GPS定位的结果属于WGS-84坐标系，而水底地形点坐标属于工程中的施工坐标系。
Compared with modeling on ground terrain, modeling on underwater terrain is a converse process. It takes a few but valuable data to establish topological structure.
与陆地地形建模相比，水下地形的多分辨率建模是一个逆向的过程，它通过较为少量但非常有价值的数据来建立水下地形的拓扑结构。
To improve the navigation accuracy of an autonomous underwater vehicle (AUV), a novel terrain passive integrated navigation system (TPINS) is presented.
为了提高自主水下航行器的导航精度，提出了一种新型地形无源组合导航系统。
Seabottom terrain mapping assistant navigation is a new method in navigation technology of underwater vehicles.
利用海底地形进行辅助导航是水下潜器导航技术致力于研究的新方向。
Seabottom terrain mapping assistant navigation is a new method in navigation technology of underwater vehicles.
利用海底地形进行辅助导航是水下潜器导航技术致力于研究的新方向。
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