摘要
将海道测量的垂直基准理论和水位改正方法综合为统一的水位控制理论与方法体系,分析比较了的时差法和最小二乘曲线比较法两种水位改正的软件实现方法的数学模型,讨论了曲线拟合参数的时变性,论证多站水位控制中垂直基准的连续线性特性,给出了水位控制的质量控制指标,得出必要的结论。
In this paper,both the vertical datum and the water level correction in hydrographic surveys are studied.The time difference model and the model based on the least squares fitting of the water level observations are compared.It is discovered that the parameters of amplitude ratio and time difference between tidal gauge vary with time because the water level are constructed with multi-tidal waves,and it is derived that the chart datum along the stages is linear and which satisfy the requirement of the seamless datum for water level control.Then,a standard for quality control of the water level correction is presented.From this study,some conclusions are given.
出处
《测绘科学》
CSCD
北大核心
2006年第6期49-51,共3页
Science of Surveying and Mapping
基金
武汉大学地球空间环境与大地测量教育部重点实验室开放基金资助项目(146990324233-04-03)
关键词
水位控制
数学模型
垂直基准
water level control
mathematical model
vertical datum
