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- discrete frequency modulation 离散频率调制
- Frequency-shift keying refers to the simple case of frequency modulation by a simple signal with only discrete states, such as in Morse code or radio-teletype applications. 调频方式也使磁带处于饱和状态,起到降噪的作用,同时接收端的调频捕获效应基本消除了透印和前回声等现象。
- Frequency modulation does not allow static to creep in. 频率调制不允许静电干扰混入。
- Frequency modulation is not possible with polychromatic light. 多色光不可能调制频率。
- The figure below illustrates a simple frequency modulation architecture. 下面的图表列举了一个简单的调频结构体系。
- Applying Volterra functional series and discrete Fourior tansform (DFT) to the system, we can obtain the model of the system in discrete frequency domain. 应用Volterra泛函级数和离散傅里叶变换理论于非线性系统,本文给出非线性系统在离散频率域的模型。
- The e xperiment results demonstrate that chaotic frequency modulation (CFM) can improv e the EMC of SMPS, and the EMC of SMPS modulated by the different discrete chaot ic sequences are not obviously different. 实验结果表明混沌频率调制可以改善开关电源的EMC性能,同时可以看出不同的离散混沌序列调制后的开关电源EMC性能相差不大。
- A method of representing data in magnetizable surface storage; for example,"modified frequency modulation". 在磁表面存储技术中一种表示数据的方法,例如改进型调频制。
- Any of several devices that convert incident electromagnetic radiation of mixed frequencies to one or more discrete frequencies of highly amplified and coherent ultraviolet, visible, or infrared radiation. 激光器使偶然的混杂频率的电磁辐射,变为一个或更多的高度强化和连续的紫外线、可见光或红外线辐射的分离频率仪器中的一种
- A large proton synchrotron,uses frequency modulation of an electric field to accelerate protons. 一种大的质子同步加速器,用电域的调频加速质子。
- In the study of flow oscillation and discrete frequency noise of impinging jet, it is found that there is a critical pressure ratio for a given nozzle and a nozzle-to-plate distance. 发现对于给定的喷嘴和冲击距离,存在一个压比临界点,当压比高于此临界点值时,流场振荡和离散频率噪声被显著抑制乃至消失。
- A method of representing data in magnetizable surface storage;for example, " modified frequency modulation" . 在磁表面存储技术中一种表示数据的方法,例如改进型调频制。
- Only certain discrete frequencies are left without benefit of external stabilization due to the feed system. 只有某些个别的频率没有利用供应系统的外部稳定作用。
- American engineer and inventor whose improvements to radio communication included the development of frequency modulation(1933). 阿姆斯壮,奈尔·奥尔登生于1930美国宇航员,他森身为阿波罗11号指挥官,成为第一个登上月球的人(1969年7月20日)
- It is also required that the power station shall be capable of moderating with load peak, frequency modulation. 要求该电厂有调峰、调频的能力。
- Synthesize of time domain wave form by summation of harmonics or sinusoidal wave form of discrete frequencies. 以离散频率之弦波合成时域脉波之波形。
- A method of representing data in magnetizable surface storage;for example"modified frequency modulation. 在磁表面存储技术中一种表示数据的方法,例如改进型调频制。
- A method of representing data in magnetizable surface storage; for example, "modified frequency modulation". 在磁表面存储技术中一种表示数据的方法,例如改进型调频制。
- Frequency modulation offers an effective parameter for spectral evolution: the modulation index (i). 能够控制声音的时变频谱要素对声音合成来说是至关重要的。
- A Pseudorandom Code Phase Modulation and Sinewave Frequency Modulation Combined Fuse. 伪随机码调相与正弦调频复合引信