Beat frequency

Experiment on Beat Frequency between Two Independent Different Types of Laser

两种不同类型独立激光器的拍频实验

A method to measure the beat frequency of weak light

一种测量弱光拍频的方法

The beat frequency was determined by fitting with certain model .

我们选择恰当的数学模型进行拟合分析，得到了拍频频率。

A Beat Frequency Method of Zero Dead-Time for Frequency Stability Measurement

一种测量频率稳定度的无间隙时间拍频法

The influence of time length and beat frequency on radar range is discussed .

讨论了信号时长和差拍频率对雷达作用距离的影响；

Beat Frequency Character and Its Application for Optic - fiber Couplers

光纤耦合器的差频特性及其应用

A Measurement Method for a CW Laser Modulation Spectrum Based on Optical Beat Frequency

一种基于光拍频的连续激光调制光谱测量方法

Choice of central beat frequency is studied .

确定了中心拍频的最佳选择；

Optical Beat Frequency Measurement Technic and Its Application

光拍频测试技术及其应用

The beat frequency of heart is significantly quick ( P < 0.01 ) .

心率显著增快（P<0·01）；

Theoretical Study of Fifth-Order Polarization Beat Frequency in a V Type Three-Level System

V型三能级系统中五阶极化拍频的理论研究

Theoretical analysis showed that the laser frequency stability and the beat frequency stability is in the same .

理论分析表明激光频率稳定度与拍频频率的稳定度相同。

Beat frequency and phase difference of heterodyne laser probe

外差激光探针的拍频与相位差

The frequency stability of CW CO 2 laser was measured with beat frequency method .

采用拍频法测量CO2激光器频率稳定度。

Theoretical research on beat frequency phenomena of harmonic drive with three-wave generator

三波谐波齿轮传动拍频现象的理论研究

Measurement of respiratory ciliary beat frequency quantified with high-speed digital microscopy

呼吸道纤毛运动状况的高速数字化显微成像

Location optimization of the A and B points ; Choice of central beat frequency is studied .

选择水平段A、B点位置；确定了中心拍频的最佳选择；

Finally , the B-FOG beat frequency stability factor is analysed .

最后，分析了影响B-FOG拍频稳定的因素。

The changes of the myocardial beat frequency before and after administration were counted .

通过计数器计数给药前后心肌细胞搏动频率的变化。

Effect of ATP on Human Nasal Ciliary Beat Frequency

ATP对人鼻腔纤毛摆动频率的影响

Precision Measuring Instrument with Holographic Grating Beat Frequency

应用全息光栅拍频的精密测量仪

The correlative theories , including laser beat frequency principle and laser stabilized frequency technology are represented .

对光学加速度计相关理论，包括激光拍频检测原理、激光稳频技术等有较为详细的叙述。

Moire Isohypse Surveying Based on Electronic Grating Beat Frequency Principle

基于电子光栅拍频原理的莫尔等高线测量术

The Beat Frequency System with Two Sets of Laser Frequency Stabilization Schemes Using NH_2D Stark cell

10.6μm双路NH2D斯塔克盒稳频CO2激光拍频系统研究

Generation of millimeter wave by beat frequency of photonic crystal waveguide directional couplers

利用光子晶体波导定向耦合差频产生毫米波

Stability Analysis of Beat Frequency in Double-Longitudinal-Mode He-Ne Laser

双纵模He-Ne激光器的拍频稳定度分析

Correction to the beat frequency for laser gyroscopes

激光陀螺拍频公式的修正

Beat frequency stabilization of a longitudinal zeeman laser

一种实现高精度稳定Zeeman激光频差的方法

The beat frequency signal - to-noise ratios are better than 20 dB .

三次实验中差频信号的信噪比均优于20dB。

Its beat frequency sound field has a strong directivity so be called the Audio Spotlight .

参量阵扬声器是一种新型的声场定向设备，所发射的差频声场具有强指向性而被称为音频聚光灯。