中圖分類號：TP311 文獻標志碼：A DOI: 10.16157/j.issn.0258-7998.234350
中文引用格式： 曾騰，徐海洲，李林峰，等. 基于弧度特征的火箭時序數(shù)據(jù)相似性評估[J]. 電子技術應用，2024，50(2)：71-75.
英文引用格式： Zeng Teng，Xu Haizhou，Li Linfeng，et al. Similarity evaluation of rocket time series data based on radian features[J]. Application of Electronic Technique，2024，50(2)：71-75.

Similarity evaluation of rocket time series data based on radian features

Abstract： Evaluating the similarity of rocket time series data is one of the main tasks in rocket time series data analysis. Dynamic time warping (DTW) is the most representative similarity measurement algorithm, but due to its susceptibility to pathological alignment, time points are often mistakenly matched, making it difficult to meet the accuracy requirements in the rocket field. To address this issue, this paper proposes a similarity evaluation algorithm for time series data based on radian features. By fully considering the original temporal features and radian features, and using time neighborhood information for calculation, the algorithm's ability to capture the local shape of the sequence has been greatly improved. The proposed algorithm was applied to time series classification task and achieved a classification accuracy improvement of over 26.04% on nine datasets with similar features of rocket data,which proved its effectiveness.

Key words : rocket time series data；dynamic time warping（DTW）；time series similarity