Quadrature Amplitude Shift Keying?
正交移幅键控QASK ？
This is called "amplitude shift keying".
这就是所谓的“振幅键控”。
The phase modulation has some more advantages against CW, which USES ASK (amplitude shift keying).
相位调制与使用ASK(幅度键控)的CW相比有很多优点。
A amplitude shift keying (ASK) demodulation method based on adaptive filtering was discussed in this paper.
研究了一种基于自适应滤波算法的振幅移位键控(ask)信号的方法。
Thirdly, we quantify the power penalty caused by the PMD in optical subcarrier multiplexing (OSCM) system with amplitude shift keying (ASK) and binary phase shift keying (BPSK).
第三，对采用不同调制格式（包括幅移键控和二进制相移键控）的光副载波复用（OSCM）系统中，PMD引起的功率代价进行了量化。
Post stack cross equalization generally consists of time shift calibration, amplitude calibration, phase calibration, frequency calibration and waveform calibration.
叠后互均化处理通常包括时移校正、振幅校正、频带校正、相位校正和波形校正。
The theory describes the temporal nonlinear evolution of the field amplitude and frequency shift of a single wave mode.
从理论上描述了单一受激波的场幅值和频率偏移的非线性变化。
In addition, an amplitude interpolating method is given to resolve the range coupling shift caused by velocity estimated error.
此外，本文还提出了另一种幅度内插的方法，很好地解决了速度估计误差造成的距离耦合时移问题。
Meanwhile the vortex shift waveform is obtained from the estimated mean frequency waveform using a suitable low-pass filter. Then the vortex shedding frequency and amplitude can be calculated.
用合适的滤波器可以从估计出的平均频率曲线中得到涡流的波形，并且计算表征涡流的涡流经过频率和幅度特征参数。
Orthogonal detection can give us both the amplitude information for gray-scale imaging and phase shift information for doppler spectrum analysis.
正交检波方法既能给出灰度超声成像所需要的回波的幅值信息，也能给出多普勒超声成像所需要的回波的相移信息。
The bending of simple supported beam make the resonance peak wavelength of each mode of TFBG shift and resonance peak amplitude unchangeableness.
简支梁的弯曲只让TF BG各模式的谐振峰波长发生了漂移，而各模式的谐振峰的幅度没有改变。
The results of simulations show that the random phase shift, the amplitude and DOA(Direction of Arrival) of signals can influence performance of CMA array in reducing multipath interference.
仿真结果表明，CMA阵列的抗多径干扰性能受随机相移、信号幅度、信号空间分布等因素的影响。当所需信号与多径干扰信号空间隔离度越大，CMA阵列的抗多径干扰性能越好。
The quantitative relationship between filtering parameters and amplitude-frequency and phase shift characteristics is analysed theoretically in this paper.
本文从理论上分析了滤波参数与幅频特性和相移特性的定量关系。
The depth migration with higher-order approximation by time-shift algorithm eliminates the frequency dispersion and amplitude distortion in the calculation process.
本文使用高阶方程深度偏移方法，并且在计算中采用了一种与差分运算等价的时移法解决了计算中出现的频散和振幅失真问题。
The oscillating flow characteristics of the test section are obtained by the analysis of the amplitude and phase shift of the velocity and the pressure wave.
通过测量阻力元件两端的动态压力、流速，得到交变流动情况下动态压力与质量流量之间振幅和相位关系，从而得到所测元件的交变流动阻力特性。
The thesis presents a new differential modulation, Coherent Amplitude and differential Phase Shift Key (CADPSK).
本文提出了一种新的差分调制方式，我们称之为相干幅度差分相移键控(CADPSK)。
The amplitude-phase weight algorithm is studied in the virtual polarization, and its phase shift matrix is modified. An appropriate design project of virtual polarization is offered as well.
研究了虚拟极化理论中的幅相加权算法，修正了移相矩阵，给出了虚拟极化的工程化实施方案。
Then after amplitude limiting, to be preamplified, demodulated, bandpass filtered, the doppler frequency shift signal is extracted.
经过限幅保护，接收放大，检波和带通滤波后，将多普勒频移信号提取出来。
The variation of oscillation amplitude transition probability while the phase change is manifested as the level shift of atom.
振幅的变化描述跃迁几率，相位的变化体现为原子的能级移动。本文用分析相位的变化来计算能级移动。
Through an analytical method of frequence response, the performance of phase-shift-frequence and amplitude-versus-frequence linear shale shaker has been analyzed.
采用频率响应分析方法，分析了该直线振动筛的相频特性、幅频特性。
Through an analytical method of frequence response, the performance of phase-shift-frequence and amplitude-versus-frequence linear shale shaker has been analyzed.
采用频率响应分析方法，分析了该直线振动筛的相频特性、幅频特性。
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