摘要
介绍了DEM的原理与构建方法及其在海底地形表征中的应用,对现有海底DEM的精度进行分析,针对数据传递而引起的精度损失,提出改进方法,即建立基于原始测线的海洋DEM,进行了理论分析并利用实例验证。
This paper introduces the principle and the idea of constructing of DEM, and its application in the token of the seafloor topography. Analyzing the precision of submarine DEM based on the chart and concerning the loss of precision which is introduced by transforming of data, the paper puts forward an improved method and establishes the submarine DEM based on the original sounding lines. It analyzes the latter in theory and illustrates it.
出处
《海洋测绘》
2004年第1期38-41,共4页
Hydrographic Surveying and Charting
基金
国家自然科学基金项目(40071070)
关键词
海底DEM结构
原始测线数据
精度分析
海底地形
structure of submarine DEM
original data of sounding lines
precision analysis
