speed frequency meaning in English
多普勒频率
转速频率
Examples
- The synthesizer with the low phase noise , highly pure spectrum and high - speed frequency agility has became the tendency to the frequency synthesis technology
低相位噪声、高纯频谱和高速捷变的频率合成器成为频率合成技术发展的主要趋势。 - This thesis presents the implementation of a high - speed frequency hopping system in dds + pll structure . a dsp is used to generate quasi - stochastic sequence and control the output frequency to construct required hopping maps
用dds pll的结构来实现频率跳变，采用dsp作为伪码发生器，控制输出频率，得到相应的跳频图案。 - Wavelet analysis is used to translate noise signal of the engine into time - frequency domain . selecting appropriate frequency band to pick up and making its envelope spectrum , then two feature frequency - 0 . 5x speed frequency and 2x speed frequency that represent the abrasion condition can be found . in addition , a new diagnosis method of image processing technique is proposed
利用小波分析将测得的机体噪声信号变换到时频域，选择合适的频带加以提取并进行包络谱分析提取包含特征频率的包络，通过分析提取后的0 . 5倍频和2倍频分量，发现两个特征频率可准确反映主轴承的磨损状况。