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A New Frequency Estimation Way of a Single Frequency Signal Via FFT Rotational Invariance Techniques 基于FFT旋转不变性的正弦信号频率估计新方法
single frequency signal 单频信
This paper introduces a single chip computer control system which is used for regulating amplitudes of sine radio frequency signal with discontinuous waveforms. 介绍了一个用于调整非连续状态射频正弦信号幅值的单片机控制系统。
single frequency signaling 单频信令
For two degrees of freedom vehicle model, the simulation of vehicle performance under the excitation of single frequency, signal is studied, its results show the adjustable fuzzy controller can evidently reduce the acceleration of the suspended mass. 针对简化的汽车模型，在以单频信号作为激励源的仿真研究过程中，该算法对悬架系统的振动控制收到了较好的效果。
single frequency signaling unit 单频振铃设备
The real single frequency sinusoidal signal under white Gaussian noise is common signal in industry.This paper presents a new method for phase estimation of sinusoidal signal based on bispectrum. 高斯噪声背景下的单频实正弦波信号是工业现场遇到较多的一类信号,本文针对此类信号提出了一种基于双谱分析的正弦波初相估计方法。
Harmonics can be added to a wave which has a single frequency to produce a complex wave. 谐音加在单频波上产生复波。
The readout principle and test method of high frequency signal of CD are introduced. 介绍了CD光盘的高频(HF)信号的读取原理和测试方法。
The match strobe gate is presented to improve the measurement precision of low frequency signal. 文中提出使用匹配选通门提高低频信号频率测量精度。
The output of common ultralow frequency signal generator has only a few fixed waveforms which can not be changed. 常用超低频信号发生器的输出只有几种固定的波形,不能更改。
The phase velocity basically tells you how fast a pure sine wave (with a single frequency) moves. 相速度可以告诉我们一个纯正弦波的传播速度。
The observed signals are filtered and demodulated into a number of single frequency stationary signals. 观测信号经滤波和解线调处理，变换为一系列单频平稳信号。
High quality REC of video frequency signal and big area communion of video frequency resources are the important parts of Instruction Multimedia Resources. 其中,视频信号的高质量录制、视频资源的大范围共享,是多媒体教学资源建设的重要组成部分,成为教育界所关注的重点。
Secondly, we generated different single frequency sections by rearranging frequency contents. 然后按照频率重排产生共频率的剖面；
The DFT phase detection method can take out frequency, phase and magnitude of the base frequency signal from a random synchronization signal. 离散傅里叶变换可以从任意信号中抽取基准频率倍频次信号的相位、频率和幅值,可以解决谐波对外同步信号的影响,从而实现周期控制锁相环对谐波的识别。
Experimental Studies of Single Frequency DBR Fiber Laser and Temperature Sensing[J]. 引用该论文黄文财;明海;陈曦曜;谢建平;许立新;王安廷;吕亮;吴云霞.
How can this triple-decker system be played over several octaves so as to produce a single frequency? 这种三层系统如何从几个八度音阶当中发出某一个频率呢？
It is during these hours when the transmitter was implanted, and when, I awoke I had a searing high frequency signal at about 100 db in my skull. 在这几小时的时间里，芯片在那时被植入，并且在那我醒过来的时候，在我的头骨里，有一种大约在100分贝的灼热的高频信号。
Operating in the heavy congested SW band, HF radars use a quasi-random step frequency signal to avoid the interference bands. 高频雷达工作在电磁环境十分恶劣的短波段,为避开干扰严重的频段,采用一种准随机跳频信号。