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Time-frequency distributions-a review

机译：时频分布回顾

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摘要

A review and tutorial of the fundamental ideas and methods of joint time-frequency distributions is presented. The objective of the field is to describe how the spectral content of a signal changes in time and to develop the physical and mathematical ideas needed to understand what a time-varying spectrum is. The basic gal is to devise a distribution that represents the energy or intensity of a signal simultaneously in time and frequency. Although the basic notions have been developing steadily over the last 40 years, there have recently been significant advances. This review is intended to be understandable to the nonspecialist with emphasis on the diversity of concepts and motivations that have gone into the formation of the field.
机译：本文对联合时频分布的基本思想和方法进行了回顾和指导。该领域的目的是描述信号的频谱内容如何随时间变化，并发展出理解什么是时变频谱所需的物理和数学思想。基本原理是设计一种同时在时间和频率上代表信号能量或强度的分布。尽管在过去的40年中基本概念一直在稳步发展，但是最近有了重大进展。这篇综述旨在使非专业人士可以理解，重点是已经形成该领域的概念和动机的多样性。

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