摘要详情

ID / 提交时间

90 / 2024-08-28 15:38:27

标题

A directional time-frequency distribution instantaneous frequency estimation algorithm based on improved dynamic programming algorithm

关键字

chirplet,direction,Crossing,Penalty function

主题及专题

lTime Frequency Analysis

状态

终稿

作者

HuangYu / University of Jinan

YuGang / University of Jinan

摘要

When the potential time-frequency distribution is affected by signal components crossing each other in the time-frequency domain, time-frequency-based instantaneous frequency estimation algorithms cannot achieve the expected performance. This article uses a general linear chirplet transform to obtain a more concentrated time-frequency representation of energy, and develops a variant of the dynamic programming algorithm that utilizes the direction and amplitude of signal components to estimate the instantaneous frequency of intersecting components, thus solving the above problem.