RTK-Net
Application Benefits: Hydrographic Surveying & Dredging

Vertical Reference Accuracy

Dredge Clamshell

RTK-Net infrastructure provides real-time positioning capabilities to a wide geographic area to an accuracy level of 1 to 3 centimeters in the X, Y and Z axis. The use of RTK GPS in Hydrographic surveying provides a vertical reference datum for all depth measurements and eliminates errors introduced from heave, vessel squat, and tidal fluctuations. As a result, before and after dredging surveys are completed more accurately and more efficiently.

During survey or dredge operations, the use of RTK GPS water levels eliminates the need for shoreline support personnel to take tide staff readings. The accuracy of RTK also reduces the allowable overdepth dredging which can save millions of dollars in dredging costs.