海洋测绘中船速效应及测深延迟效应误差分析与改正

Error Analysis and Correction of Vehicle Speed Effect and Sounding Delay Effect in Marine Surveying and Mapping

船速效应及测深延迟效应是进行高精度海洋测绘必须考虑的两项误差。本文基于测船平面直角坐标系,对海洋测绘中的船速效应及测深延迟效应误差进行了相关分析,通过实验案例,对测船在不同速度下的水平位移和测深延时值进行了统计比较,进一步验证了这两项误差对海洋测深精度的影响,同时提出了几点改正措施。

Velocity effect and bathymetric delay effect are two errors that must be considered in high precision marine surveying.Based on the plane rectangular coordinate system of the surveying ship,this paper makes a correlation analysis of the ship speed effect and the error of the bathymetric delay effect in the ocean surveying and mapping.Through the experimental case,the horizontal displacement and the bathymetric delay value of the surveying ship at different speeds are compared statistically,and the influence of these two errors on the accuracy of the ocean sounding is further verified.At the same time,some corrective measures are put forward.