查询词典 amplitude modulation

The method of multiple scales is used to determine the equations of modulation of amplitude and phase .

对该系统的研究分为两个部分：首先在第二章集中讨论了相应的确定性系统，即v=0时的情况。

This paper analyses the frequency characteristics of the gear meshing and the signals due to amplitude and frequency modulation.

本文分析了齿轮传动的频率特性和它所产生的频率和幅值调制信号。

In this dissertation, the multilevel differential amplitude and phase shift keying modulation in OFDM system is investigated.

论文首先介绍了日本CRL开发的毫米波宽带无线接入OFDM实验系统，作为后续研究的基础。

Pulse, Amplitude and Frequency modulation are all available.

脉冲，幅度和频率调制都可用。

Several control methods were discussed and amplitude and phase separate modulation was presented.

数字化是控制领域发展的趋势，在具体实现能量回馈系统的过程中，本文也充分运用数字式控制方式。

Reflection wave have the action of amplitude and frequency modulation.

反射波具有振幅调谐和频率调谐作用。

Frequency modulation and amplitude compensation of interruptedly received LFM signals are studied to precede a false target group based on interrupted T/R jamming system.

摘要该文基于间歇收发干扰体制，研究了通过对间歇采样LFM信号的频率调制和幅度补偿，产生导前假目标群问题。

Based on chapter two, In chapter three, the method of multiple scales is introduced to the study of the multiple-dimensional nonlinear stochastic systems under random external excitation. Using method of multiple scales, we strictly deduce the equation of modulation of amplitude and phase. The effects of random excitations are analyzed; numerical simulations verify the results. Theoretical and numerical simulations show that when the intensity of the random excitation increases, the nontrivial steady state solution may be changed from a limit cycle to a diffused limit cycle.

在第二章基础上，第三章将多尺度法引入到相应的随机系统的研究中；严格推导了系统的约简方程，用矩方法求出稳态解应满足的方程，获得一些结果；并且数值模拟结果与理论推导的结果是一致的；并注意到，与其对应的确定性系统相比较，系统响应从周期解变为近似周期解，系统的相轨线从极限环变为扩大的近似极限环；随着激励带宽的增大，此扩大的近似极限环的宽度将增大。

Through proper adjustment to frequency modulation amplitude,the Kerr-effect-induced bias can be effectively reduced.

通过适当调节两光束的频率调制幅度，可有效地实现克尔效应误差的消除。

Fixed Length Dual-Amplitude Pulse Interval Modulation for Optical Wireless Communications.

无线光通信中的定长双幅度脉冲间隔调制。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。