测绘通报 ›› 2020, Vol. 0 ›› Issue (2): 72-76.doi: 10.13474/j.cnki.11-2246.2020.0047

• 学术研究 • 上一篇    下一篇

顾及时空轨迹特征的台风相似性评估算法

张可可, 罗年学, 赵前胜, 邹子昕   

  1. 武汉大学测绘学院, 湖北 武汉 430079
  • 收稿日期:2019-06-19 修回日期:2019-07-31 出版日期:2020-02-25 发布日期:2020-03-04
  • 作者简介:张可可(1996-),女,硕士生,主要研究灾害案例推理、应急大数据分析。E-mail:ccchloe@qq.com
  • 基金资助:
    国家重点研发计划(2017YFC1405300)

Typhoon similarity evaluation algorithm considering spatiotemporal trajectory features

ZHANG Keke, LUO Nianxue, ZHAO Qiansheng, ZOU Zixin   

  1. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China
  • Received:2019-06-19 Revised:2019-07-31 Online:2020-02-25 Published:2020-03-04

摘要: 相似的台风路径在一定程度上反映了影响台风运动的诸多因素产生的相同或相似的综合效应。本文基于IMHD-ST距离并综合考虑轨迹时空距离和频率特征,提出了一种距离-频率时空轨迹相似性度量算法,从时空位置和路径形状两个角度衡量台风轨迹之间的相似程度。经实际数据验证本文所提出的算法计算结果准确,同时提高了对噪声、采样率变化和偏移等干扰的抵抗能力,能有效匹配相似轨迹对,服务于台风路径预测与历史相似台风案例的提取。

关键词: 台风, 时空轨迹, 轨迹特征, 相似性, 案例匹配

Abstract: Similar typhoon tracks reflect to some extent that influencing factors have the same or similar comprehensive impacts on typhoon movements. In this paper, considering the trajectory space-time distance and frequency characteristics, distance-frequency algorithm, a spatio-temporal trajectory similarity measurement algorithm based on IMHD-ST distance is proposed. The similarity between typhoon trajectories is evaluated on two aspects of spatio-temporal position and shape. Experimental results show that the calculation results remain accurate, meanwhile the resistances to noise, sampling rate change and offset have been improved, therefore can effectively match similar trajectory pairs and applied to typhoon tracks forecast and similar typhoon cases extraction.

Key words: typhoon, spatio-temporal trajectory, trajectory feature, similarity, case matching

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