平均海面传递方法的比较与选择  

Comparison and Choice of Mean Sea Level Transfer Methods

作　　者：许军[1,2] 暴景阳[1] 于彩霞[1,3] 

机构地区：[1]海军大连舰艇学院海洋测绘系,辽宁大连116018 [2]中国测绘科学研究院,北京100039 [3]解放军信息工程大学地理空间信息学院,河南郑州450052

出　　处：《海洋测绘》2014年第1期5-7,20,共4页Hydrographic Surveying and Charting

基　　金：国家自然科学基金项目(41074002;40671161;40801189);国家863计划(2009AA12Z202)

摘　　要：给出了常用平均海面传递方法的假设条件。以中国沿岸典型验潮站为例,统计不同同步时长下各传递方法的精度。统计分析表明,同步时长在7d内时应慎用回归分析法;最小二乘拟合法的假设条件缺乏相关的理论支持,只适用于潮差变化较小的区域;同步改正法在同步7d时基本能保证极值误差在10cm内,而同步15d与同步30d的精度相当,能达到厘米级。基于分析结果给出了传递方法的选择建议,为提高中短期验潮站的平均海面确定精度提供了依据。The hypotheses of mean sea level transfer methods are given. Based on the representative tidal stations in China Sea areas, the statistics for accuracy in different synchronous time lengths is conducted. It shows that regression reduction method should be used prudently in 7 days. The hypothesis of the least square fitting method is short of support in theory, and this method can be used just in area where the variation of tidal range is little. The synchronous reduction method works best. The extremal error from 7 days data limits in 10 centimeters. And the centimeter accuracy can be obtained from 15 days or 30 days data. In order to improve the accuracy of the mean sea levels of short-term and mid-term stations, some proposals are offered for the choice of the mean sea level transfer methods in different cases.

关 键 词：海道测量 平均海面 传递方法 水位改正 

分 类 号：P229.3[天文地球—大地测量学与测量工程]