地球信息科学学报 ›› 2015, Vol. 17 ›› Issue (10): 1207-1214.doi: 10.3724/SP.J.1047.2015.01207
收稿日期:
2015-03-17
修回日期:
2015-07-07
出版日期:
2015-10-10
发布日期:
2015-10-10
作者简介:
作者简介:许开辉(1989-),男,硕士生,研究方向为海洋涡旋提取算法。E-mail:
基金资助:
WEI Haitao1,2, DU Yunyan1,*(), XU Kaihui1,2(
)
Received:
2015-03-17
Revised:
2015-07-07
Online:
2015-10-10
Published:
2015-10-10
Contact:
DU Yunyan
E-mail:duyy@lreis.ac.cn;xukh@lreis.ac.cn
About author:
*The author: CHEN Nan, E-mail:
摘要:
浮标在运动过程中如果受到涡旋的影响,会回到之前某一时刻所在的位置,其轨迹中就会出现环状结构,故提取浮标轨迹中的环状结构,就可识别涡旋。鉴此,本文针对ALIS(A Simple Automated Loop Identifying Scheme)算法忽略了这一环状结构中出现的“复杂结构”之不足予以改进,提出了基于浮标轨迹回环结构的涡旋及其移动轨迹提取算法AILIS(An Improved Automated Loop Identifying Scheme)算法。其通过判断环状结构中的轨迹片段是否有自相交对“复杂结构”进行处理,使提取结果更加完善;在此基础上,该算法通过判断涡旋瞬时状态的相似性,可追踪涡旋的部分移动轨迹。本文通过与ALIS算法及其他相关算法结果的对比,并使用SLA数据及HD(Hybrid Detection)、HT(Hybrid Tracking)算法实验结果表明,本文提出的算法能得到更多的海洋涡旋的瞬时状态和移动轨迹,为获取涡旋的物理参数提供重要的途径。
魏海涛, 杜云艳, 许开辉. 基于浮标轨迹的涡旋信息提取算法[J]. 地球信息科学学报, 2015, 17(10): 1207-1214.DOI:10.3724/SP.J.1047.2015.01207
WEI Haitao,DU Yunyan,XU Kaihui. A Scheme of Extracting Information of Vortex Based on Floats[J]. Journal of Geo-information Science, 2015, 17(10): 1207-1214.DOI:10.3724/SP.J.1047.2015.01207
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