顾及时空轨迹特征的台风相似性评估算法

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。

Typhoon similarity evaluation algorithm considering spatiotemporal trajectory features

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.