On March 10, 2016, our company’s engineer came to North China University of Water Resources and Electric Power to do the ROV’s underwater test, checking the dam’s underwater situation. 

 

This time we supplied the third generation Stealth from Shank Marine, named Stealth 3, it is on the basis of Stealth 2, upgrade the control system and control software, improve the performance of thruster, especially Diverlog software gathering control, data display, project management as a whole, it can manage measurement data, sonar data and video data through task directory, users can easily retrieve it, quickly mark target in sonar image and video. It is easy to operate in the control systems for the automatic depth, automatic heading and automatic speed. 

More importantly, the system includes a set of “total navigation system”, it integrate underwater doppler log, high precision attitude sensor and water proof GPS. Through this system, combined with intelligent control software, Stealth 3 can realize underwater autonomous navigation, automatic search. At the same time, the ROV system also configured the parametric sub-bottom profiler, it can provide a convincing evidence to lack bed and riverbed’s geological characteristics and forming process. 

The following is the situation of reservoir detection
 

　　
 

The contrast between the black and white camera image and sonar image 
 

　　
 

The contrast between the color camera image and sonar image