在此次例行探险的最后一次潜底时，扫描声纳在海底发现了一个大型物体。
On the final dive of the trip, the scanning sonar detected a large object on the seafloor.
水深(或海底地形)的数据往往是在船只上使用声纳测量海底采集的。
Bathymetric (or sea floor terrain) data is often collected from boats using sonar to take measurements of the sea floor. The lines reflect the path of the boat as it gathers the data.
尽管船舶声纳技术也用得上，但是迄今为止利用船舶器械仅仅绘制出海底地貌的10%。
Ship-based sonar would help, but ship-based instruments have mapped only about 10 percent of the ocean floor so far.
文章提出了一种新的基于BOTDR和声纳的海底光缆事件监测系统，并讨论了其测量方法。
A novel submarine optical fiber cable monitoring system based on BOTDR and sonar is proposed, and the method of measurement is also discussed.
在浅海环境中，海底散射是影响主动声纳性能的最主要因素之一。
In the littoral environment, the bottom scattering is one of the most important factors for limiting the performance of active sonar.
介绍了一种建立在与相位信息相联系的分离孔径方法的基础上的、用于多波束测深声纳的海底探测方法。
A bottom detection method used in the multibeam bathymeter sonar is introduced. The method is based on the separate aperture method, which is associated with phase information.
围绕声纳方程，论证了相关计程仪设计时应考虑的一些问题，如频率的选取，换能器间距等，从而为海底回波仿真的参数选择提供了理论依据。
Some problems, such as the choice of frequency and distance between transducers, are discussed according to sonar equation, which should be considered in the design of Acoustic Correlation Log.
并提出用差分gps配合声纳测深进行动态连续定位，从而建立海底地形模型的设想。
The author proposed a tentative idea about forming the model of submarine terrain by the model of DGPS combining with Sonar system.
海底地层回波数据的成像处理是依据地层剖面仪在海面激发以及水听器接收到的海底地层声纳回波信息来研究海底地层沉积结构的一种方法。
The method of imaging the submarine sediment layers' echo data is to study the geologic structure with the information simulated by a profiler and received by hydrophone streamers at the sea surface.
海底地层回波数据的成像处理是依据地层剖面仪在海面激发以及水听器接收到的海底地层声纳回波信息来研究海底地层沉积结构的一种方法。
The method of imaging the submarine sediment layers' echo data is to study the geologic structure with the information simulated by a profiler and received by hydrophone streamers at the sea surface.
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