摘要
详细阐述了余水位潮汐差分改正原理,论证了应用该方法可以减少海道测量中水位站的布设数量。通过利用精确的潮汐模型描述天文潮变化,设立水位站监控余水位变化,相当于增大了水位站的监控范围,从而减少实际测量作业中水位站的布设数量。文章给出了多站余水位差分的内插计算公式,并给出了基本的多基站数学表达模型,对潮汐分析计算具有重要的作用。在潮波传播较为复杂的渤海湾东部海区进行了实验,结果表明单站水位改正精度仍可在10 cm以内,并且通过误差分析,说明了该方法还可继续提高改正精度,具有较好的应用前景。
This paper expounds the tidal differential correction principal of the residual water level, it proves that the numbers of the water level stations can be reduced in the hydrographic survey by this method. By using an accurate tidal model, this paper describes the change of the astronomical tide, by setting up the water level stations to monitor the residual level which equals to enlarge the monitor range of the water level stations, then the numbers of water level stations can be reduced in the practically survey. The interpolation calculating formula of the mnti - station residual level is given in this paper, and the basic mathematics model of the muti - base stations is also proposed. It has an important function in the tidal analysis. An experiment in the propagation of the complicated tidal wave in the east Bohai sea was carried out, the results indicated that the precision of the single water level correction was within 10 cm, the precision can be enhanced on the basis of the error analysis. It has a bright future in the application.
出处
《水道港口》
2009年第1期61-65,共5页
Journal of Waterway and Harbor
关键词
海道测量
水位改正
余水位
hydrographic survey
water level correction
residual water level
