基于移动对象的飓风全时域轨迹模型  

A Full-Time Domain Model of Hurricane Trajectories Based on Moving Objects

作　　者：刘亮[1] 田原[1] 王星光[1] 王嘉伟 刘浩[3] 

机构地区：[1]北京大学遥感与地理信息系统研究所 [2]中铁工程设计咨询集团有限公司 [3]中国人民解放军75711部队

出　　处：《北京大学学报（自然科学版）》2015年第5期871-878,共8页Acta Scientiarum Naturalium Universitatis Pekinensis

基　　金：国家自然科学基金(41271386;41371169)资助

摘　　要：根据飓风运动轨迹的特点,提出一种基于动态属性的飓风全时域轨迹模型,设计轨迹数据阈值估计更新策略。将飓风运动轨迹组织成一系列时空连续的运动片段,在符合总体精度要求的前提下,实现数据压缩并支持全时域位置查询。基于实际飓风数据的实例研究证明,该模型能够较为完整和精确地描述飓风运动过程,总体误差符合飓风预测的国际标准,模型的数据量较原始数据可减少24.71%,并支持飓风过去时刻和短暂未来位置的状态信息查询。Considering the characteristics of hurricane trajectories, a full time domain model of hurricane trajectory（FDMHT） based on dynamic attributes, along with its update strategy for tracking data, is proposed. By organizing a hurricane trajectory into a series of continuous spatio-temporal motion segmentations with acceptable trajectory accuracy, FDMHT can achieve effective data compression and support location queries within a hurricane＇s full time domain. Experimental results demonstrate that FDMHT can not only represent the movements of hurricanes completely and accurately, with overall error meeting with international prediction standards, but also reduce the volume of trajectory data by 24.71%. Moreover, based on FDMHT, it is convenient to query the position of a hurricane at any time in its life span.

关 键 词：移动对象 飓风 轨迹 全时域模型 更新策略 地理信息系统 

分 类 号：P444[天文地球—大气科学及气象学]