【摘要】 时间-频率分析即三维瀑布图分析能有效地表达在某一段连续的时间内信号频域的变化情况,比单纯时域或频域分析蕴含了更加丰富的信息,因而常常应用于非平稳随机信号的研究中。在此,首先讨论了瀑布分析在信号分析领域中的重要意义,详细论述了采用DSP进行信号实时处理,PC负责完成三维动态显示方案的技术实现。更多还原

【Abstract】 Neither the time domain nor the frequency domain displays can reflect all information of the signal solely, whereas time-frequency displays, i.e. 3-D waterfall displays, contain more abundant information, it can express the change of the frequency domain of signal effectively within a period of continuous time, therefore it often applys to the research of the non-steady random signal. At first, this paper discusses the important meaning of waterfall-analysis in the field of signal analysis, then it expounds the realization in detail that adopts DSP to carry on the real-time processing of the signal, PC is responsible for finishing the three-dimension displays dynamically.更多还原