基于验潮站组网的深度基准面确定

Determination of Chart Datum Based on the Network of Tidal Station

分析了短期和临时验潮站深度基准确定的不统一性。重点研究了以长期验潮站作为控制,将验潮站组网传递确定深度基准面的方法,具体阐述了最小二乘拟合求取潮差比与平差方法求取深度基准值的计算方法与原理。利用仿真实验与实例计算论证了该方法的合理与可靠性。得出的结论是:在海道测量作业海域,基于验潮站组网确定深度基准可以达到理想的精度,且获得含义统一的深度基准面。

Based on the status quo of isolation and chaos in which we determine the chart datum at tide stations, this paper leads an in-depth study on how to coherently determine the chart datum. And the method of leastsquare fitting to calculate the ratio of tidal ranges and the theory of value determination of chart datum with adjustment are specifically described.It has been proved that the method put forward in this paper is reasonable and reliable through some experiments. In conclusion, chart datum obtained based on tidal station network achieves a high precision, and it is coherently determined.