Aiming at this problem,the concept of the second order power spectrum was proposed based on the characteristic of the amplitude tune with pe- riodical notch spectrum in thin layer and theoretically researched.
为此,从薄层振幅调谐具有周期性陷频谱特征出发,提出了二阶功率谱的概念,从理论上对薄层的二阶功率谱特征进行了研究,建立了薄层厚度与二阶功率谱极大值之间的对应关系,给出了利用二阶功率谱进行薄层厚度预测的理论依据和方法,即根据薄层厚度和二阶功率谱的能量关系制作二阶功率谱图,图上强能量团对应的时间即为薄层时间厚度。
The new method can determine the tuning amplitude and frequency directly in terms of the amplitude changes or amplitude envelope in the frequency division sections.
采用“接近零相位子波”的小波函数作为基本小波 ,通过分频扫描可以以较高的分辨率检测出薄层的结构 ,并可直接根据各分频剖面振幅或者振幅包络的变化 ,确定调谐振幅和频率 ,从而估算出薄层的厚度 。
Experimental study of ultracold cesium atom photoassociation spectrum using an amplitude modulation technique;
基于振幅调制的超冷铯原子高分辨光缔合光谱的实验研究
In order to study the effect of small-scale amplitude modulation spot to the laser propagation, we pick up the parameter-density based on the model of amplitude modulation, which can describe the synthesis character of scale and number.
为研究高功率固体激光装置中的小尺度振幅调制点对激光传输的影响,在振幅调制点模型的基础上提取出密度特征参数,它能同时反映振幅调制点尺度和数目的综合特征,通过实际光路的数值模拟,结果表明密度可以描述出振幅调制点的影响,对工程有一定的指导作用。
Using type Ⅱ/Ⅱ polarization-mismatch KDP crystal schemes for third harmonic generation,the effects of amplitude modulation and phase perturbation of incident fundamental field on the tripling efficiency and dynamic range have been discussed.
采用Ⅱ /Ⅱ类偏振失配的KDP晶体倍频方案 ,讨论了振幅调制和位相扰动对倍频系统转换效率和动态范围的影响 ,提出了在高功率条件下提高倍频系统转换效率和增大动态范围的方法。
This system of modifying the carrier waves is called "Amplitude Modulation," or "AM".
这个改变载波的系统称为“振幅调制”或缩写为“AM”。
Rotation invariant pattern recognition based on amplitude-modulated phase-only filter
应用振幅调制纯相位滤波器实现旋转不变识别
Applications of Amplitude Modulation and Pixel Random Permutation Techniques in Double Random Phase Encryption System
振幅调制和像素随机置换技术在双随机相位加密系统中的应用
Spectral shifts and spectral switches of laser beams with amplitude modulations and phase distortion in the far field
有振幅调制和相位畸变光束的远场光谱移动与光谱开关
Amplitude Modulation of Resultant Light Signal in Measuring of Tiny Displacement with Double Gratings
激光双光栅法测微小位移中光拍信号的振幅调制
optimum amplitude and phase modulation
最佳振幅与相位调制
Amplitude-Frequency Modulation Mechanism of Chandler Wobble of Triaxial Earth
三轴地球Chandler晃动的振幅-频率调制机制
Control and Experiment Research in Stepless Adjust Frequency and Amplitude Component of Vibration Roller;
振动压路机无级调频调幅机构控制及试验研究
Adjusting the vibrating amplitude easily and having the function of amplitude.
具振幅预知功能且振幅调整容易。
To vary the frequency, amplitude, phase, or other characteristic of(electromagnetic waves).
调制变换（电磁波的）频率，振幅，周相或其它特点
amplitude-modulated junction transistor oscillator
调幅结形晶体管振荡器
plitude-controlled clamp
电压振幅箝位控制电路
a circuit that limits the amplitude of a waveform.
限制波形振幅的线路。
In communications, an amplitude modulated signal in which the amplitude of the carrier is reduced to zero for some part of the cycle of the modulating waveform.
通信技术中的一种调幅信号，其载波的振幅在调制波形周期的某些部分减少到零。
Study on Frequency & Amplitude Adjustment of Intelligent Vibratory Compactors;
智能振动压路机的无级调频调幅研究
AM transmitter with pulse duration modulation
脉宽调制式调幅发射机
Damping wakes possible finite steady-state vibration amplitude at resonance.
在共振时，阻尼可能限制稳定振动的振幅。
automatic amplitude control
自动幅度控制自动调幅控制