instantaneous frequency
瞬时频率：表示信号在某一时刻的频率
常用释义
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美式发音
基本释义
- 瞬时频率：表示信号在某一时刻的频率，通常用于分析非稳态信号的频率特性。
例句
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1·Firstly the estimation of instantaneous frequency is discussed.首先是瞬时频率的估计问题。
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2·The local energy and instantaneous frequency of the signal can be derived from the IMFs.信号的局部能量和瞬时频率都可以从其本征模函数中推导出来。
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3·Instantaneous frequency measurement (DIFM) receiver is one of important component part of EW system.瞬时测频接收机是电子战系统的重要组成部分之一。
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4·A method for identifying the instantaneous frequency of a linear time-varying structure was proposed.提出了一种识别线性时变结构瞬时频率的方法。
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5·Instantaneous Frequency Measurement (IFM) receivers are important for modern electronic reconnaissance systems.瞬时测频接收机是现代电子侦察系统的重要组成部分。
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6·All the conventional vibrators use the sweep signal of which the instantaneous frequency shows linear change with time.常规可控震源都是采用瞬时频率随时间线性变化的扫描信号。
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7·Introduction to the physical concept, classical definition and application scope of instantaneous frequency (IF) is given.首先介绍了瞬时频率的物理概念、经典定义及其适用范围。
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8·Experimental simulation yielded the relation of the partial mode's instantaneous frequency and vortex frequency without noise.实验模拟，得到无噪音的部分模式的瞬时频率的关系和涡流频率。
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9·It has the properties of high time-frequency resolution and energy concentration as well as tracking instantaneous frequency etc.它具有很高的时频分辨率、能量集中性和跟踪瞬时频率等特性。
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10·This paper proposed the theory of digital counting instantaneous frequency measurement and analyzed the error of frequency measurement.文章介绍了一种用直接数字计数测量瞬时频率的原理，并进行了测频误差分析。