海洋测绘2017，Vol.37Issue(5)：17-21,5.DOI:10.3969/j.issn.1671-3044.2017.05.003
多波束测量声速剖面EOF表示阶次选取研究
Order Selection of EOF Expression of Sound Velocity Profile in Multibeam Surveys
摘要
Abstract
The empirical orthogonal function (EOF),an effective basis function,is used to describe the sound velocity profile which can be usually expressed by fore some orders of EOF.However,the order selection of EOF may dissatisfy the accuracy of multibeam bathymetry when the reconstruction sound velocity profile with EOF is used for sound velocity correction.In order to solve the problem,firstly,the principle and procedure of sound velocity profile expressed with EOF is introduced,secondly,the fitting error of sound velocity profile and the influence of the multibeam bathymetry with different orders are analyzed,and finally,the orders of EOF are obtained combining the NOAA tolerance for sound velocity profile error in the multibeam survey.The research achieves the goals of satisfying the accuracy of multibeam bathymetry as well as confirming the EOF orders reasonably.关键词
多波束测深/声速剖面/经验正交函数/阶次选取/误差分析Key words
multibeam echosounding/sound velocity profile/EOF/order selection/error analysis分类
天文与地球科学引用本文复制引用
张志伟,暴景阳,林建炬..多波束测量声速剖面EOF表示阶次选取研究[J].海洋测绘,2017,37(5):17-21,5.基金项目
国家自然科学基金(41074002,41576105). （41074002,41576105）
