海洋测绘2017，Vol.37Issue(4)：55-58,4.DOI:10.3969/j.issn.1671-3044.2017.04.012
海洋基础地理数据基准纬线设定方案研究
The Research of the Standard Parallel Solution About Chart Based Data
摘要
Abstract
Mercator is one of the most common projection in marine charting,in which there is no length deformation on the standard parallel.However,the length deformation is very large in the fields away from the standard parallel.When compiling chart based data,the length of the field corresponding to the cartographic generalization parameters affected by Mercator projection is very significant.And these will affect the density and accuracy of chart datain different latitude locations.In order to make the features in uniform density and control data error,this article analyzes the influence on difference between chart showing and real distance caused by the different standard parallel and the length deformation of different fields.According to this to set cartographic generalization parameters.And based on the principle of control the length deformation,the article makes the standard parallel solution about chart based data when building marine geographical database.关键词
海图制图/墨卡托投影/基准纬线/长度变形/数据库Key words
charting/Mercator projection/standard parallel/length deformation/database分类
天文与地球科学引用本文复制引用
滕杨,方强飞,纪宏宇..海洋基础地理数据基准纬线设定方案研究[J].海洋测绘,2017,37(4):55-58,4.
