Abstract:This paper focuses on the problem of deviation of seafloor control point coordinate solution caused by inaccurate measurement of sound velocity profile when using the sailing-circle positioning method. First, the effect of uncertainty in sound velocity on the ranging error are introduced. Then, the ranging error is divided into four parts: background sound velocity error, ranging random error, long-period term and short-period term of ranging error. The influence of these four parts on the control point coordinates are shown through analyzing the coordinate correction equation. The theoretical results are consistent with the simulation experiments.
SUN Wenzhou,YIN Xiaodong,XIA Wenjie. Analysis of the Influence of Sound Velocity Error on Sailing-Circle Positioning Method for Seafloor Control Points[J]. jgg, 2020, 40(12): 1299-1302.