narrow band signal meaning in Chinese
窄带信号
窄频带信号
Examples
- Since the spectrum of the helicopter noise contains wide band continuous component and narrow band line component , we can use the wide band signal detection method or narrow band signal detection method . both detection methods are discussed
直升机噪声既含有宽带连续谱成分，又有很强的窄带线谱分量。根据直升机噪声的特点，我们既可以采用宽带能量检测，又可以采用窄带线谱来检测直升机信号。 - Because period narrow band signals are the main part of background noises , this thesis uses hardware description language to design a multi - band finite impulse response filter ( fir ) and downloads the program into filed programmable gate array to eliminate the period narrow - band interferences in the background noises
3 )在现场环境中，背景干扰主要是周期性的窄带，本文利用硬件描述语言( vhdl )设计了一个多带fir有限冲击响应滤波器。应用到可编程逻辑器件中，消除了背景噪声中的周期性干扰，为信号的进一步处理提供尽可能干净的信号。 - Because of the good sensibility , ultrasonic narrow band signal analysis technique with 1mhz central frequency was chosen to differentiate the heat treatment samples above - mentioned . there are obvious differences among heat treatment products in principal frequency , spectral peak ' s quantity , amplitude and distribution . that is to say , the technique of ultrasonic narrow band power spectral can be applied to characterize the microstructures of multi - phased alloy steels
利用窄带信号频谱分析技术灵敏度高的突出优点，选取中心频率为1mhz的窄带超声信号，对上述不同热处理试样进行超声功率谱分析，发现不同热处理产物在功率谱主频率、谱峰特征(幅度、数量、分布)等方面，都存在不同程度的差异。