高精度瞬时水深模型的一种构建方法  

A method of constructing a high-precision instantaneous depth model

作　　者：曹鸿博[1] 张立华[1] 赵巍[2] 贾帅东[1] 

机构地区：[1]海军大连舰艇学院海洋测绘科学与工程系 [2]92493部队

出　　处：《测绘科学》2010年第4期111-113,共3页Science of Surveying and Mapping

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

摘　　要：高精度的水深表达是舰船安全、经济航行的先导和基础。本文提出了一种构建高精度瞬时水深模型的方法,利用高密度的多波束水深数据作为静态水深,基于余水位订正的预报水位作为动态水位,通过高效集成静态水深和动态水位从而构建瞬时水深模型。实验证明:本文所提的构建瞬时水深模型的方法较传统的方法,准确率有了很大的提高;瞬时水深模型的精度与格网尺度有关;余水位是影响瞬时水深模型精度的一个重要因素。High-precision instantaneous depth representation is a foundation of safe and economical navigation. This paper proposed a method for eonstrueting high-precision instantaneous depth model （IDM）. Firstly, high-density multibeam depth data was used as static depths. Secondly, forecasted water level based on residual water level correction was used as dynamic water. Finally, an instantaneous depth model was constructed by high-efficieney integration of the static depth and dynamic water level. Experimental results demonstrated： the precision of IDM constructed by the proposed method could be higher than that of IDM constructed by traditional method; the precision of IDM depends on grid scale; residual water level is an important influencing factor of IDM precision.

关 键 词：瞬时水深模型 海底数字水深模型 潮汐模型 精度分析 

分 类 号：P229.3[天文地球—大地测量学与测量工程]