In the light of the performance features of KNUDSEN 320M detector, this paper analyzes on the application of double frequency detector in the water-depthmeasurement.
针对KNUDSEN 320M型测深仪的性能特点，介绍了双频测深仪在水深测量中的应用。
2
The survey system can make measurement of the depth of the mud scum and can automatically plot a navigable water depth chart with the acquired data of water depth.
该系统可以进行浮泥层水深测量并将水深数据经整理后自动绘制成适航水深图。
3
Influenced by the waterdepth of ship sea trial area, velocity measurement of deep-draft large-scale ship should be shallow-water corrected with proper method.