频率分辨率概念的教学探讨

频率分辨率是“数字信号处理”课程中的一个重要知识点,该概念紧贴雷达探测等领域的工程应用。但是在传统教学中,往往直接给出频率分辨率的定义和公式,缺乏对概念背后物理意义和工程应用的理解。本文从区分两个单频信号的实际需求出发,给出频率分辨率概念的起因和定义,并且从工程应用的角度对频率分辨率的概念进行了再认识。

Teaching Discussion on The Concept of Frequency Resolution

Frequency resolution is an important knowledge in the course of Digital Signal Processing, which is closely related to the engineering application of radar detection and other fields. However, in traditional teaching, the definition and formula of frequency resolution are often given directly, lacking of understanding of the physical meaning and engineering application behind the concept. In this paper, the origin and definition of the concept of frequency resolution are given for the practical requirement of distinguishing two single frequency signals, and the concept of frequency resolution is re-recognized from the point of engineering application.