查询词典 modulation

By fusing the IKONOS multi-band and pan image using several image fusion algorithms(IHS transform, PC transform, Gram-Schmidt transform and smoothing filter-based intensity modulation) and assessing the fusion image, indicates that qualitative comparison is too subjective, although many methods are provided for assessment when using quantitative methods, more bands and more methods should be used for their limitations, spectral curve comparison was the best method for appraising the result, spectral angle and geometry distance was introduced to appraise the spectral curve.

以IKONOS影像为数据源，对IHS、PC，Gram-Schmidt和基于亮度调节的平滑滤波四种融合算法进行融合处理，对其结果进行了评价。结果表明，定性比较主观性较强，定量比较方法虽多，但大都有一定的局限性，不同谱段的计算结果总有些差异。因此，定量评价时应该多选一些波段与评价方法才能获得比较客观的评价结果。光谱曲线的比较不失为一种比较好的方法，在对光谱曲线进行比较时本文引入了光谱角度和几何距离两种方法进行定量的比较。

In advanced time-division multiple-access mobile communication systems, reduced-state equalization algorithms have to be employed because high-level modulation is used in order to improve spectral efficiency.

在先进的时分多址接入移动通信系统中，需要一个减少状态均衡算法来提高高阶调制方式下频谱的有效性。但是这种均衡算法只有在具有最小相位的离散时间系统中才能获得高性能。

So we can get higher spectrally efficiency. We first analyze the performance of adaptive turbo coded modulation based on fixed threshold, and point out its disadvantages.

论文最后在自适应OFDM中引入Turbo编码调制，以期在获得自适应性能增益的同时亦获得Turbo编码增益，从而获得更高的频谱利用率性能。

They assumed language must be based on speech, the modulation of sound.

这里说明了 educators 反对的理由，认为语言是必须建立在语音上的，是一个发声的过程。

In the method, the orbit of targets and the radar coordinates and parameters are put to calculate attitude and dynamic parameters of targets in line of sight. And then the dynamic data are generated according to the electromagnetic modulation model of the movement of targets including motion at high speed, spin, precession on electromagnetic wave.

该方法首先确定目标的轨道和雷达的布站坐标及工作模式，而后计算目标在雷达观测视线(line of sight， LOS)方向上的姿态和运动参数，最后根据空间目标高速运动、自旋、进动等在电磁波上调制的数学模型生成动态测量数据。

Influence of spontaneous emission factor on the bifurcation and chaos behavior of VCSEL under large signal modulation.

自发辐射因子对VCSEL在大信号调制下的分岔及混沌行为的影响。

To estabish reproduction and breeding system in the spottdc deer;(2)To conduct frozen preservation of the spotted deer's semen and embryo;(3)To conduct development of artifical insemination and embryo transfer by demonstration in the spotted deer;(4)Study on nutrition requrement and the application of mordern nutrition modulation technique;(5)To estabish significant deseases testing and preventive systems;(6)To estabish adminastrative software of computer system.

项目简介：(1)建立梅花鹿良种繁育体系；(2)进行梅花鹿精液及胚胎的冷冻保存；(3)进行梅花鹿人工授精和胚胎移植技术的示范推广；(4)梅花鹿营养需要的研究和现代营养调控技术的应用；(5)建立梅花鹿重大疫病检测预防体系；6_建立梅花鹿计算机管理软件系统。

In turn,this will depend on the type of modulation employed,whether it is AM,FM,SSB,or any of the forms treatde later.

也就是说，将取决于使用的解调器的种类，不管是AM，FM，SSB或之后任何一种处理方式。

Oscillation modulation circuit which can provide the signal carrier with stable frequency is the key point in the subject.

本课题重点在于设计能给发射机电路提供稳定频率的振荡调制电路。

In addition, the nonlinear processes such as cross-phase modulation, non-degenerate two-photon absorption, and stimulated Raman scattering must also be considered for double wavelengths propagating in waveguide.

在归纳分析了SOI对光信号处理的研究进展的基础上，进一步完善了超快脉冲在脊形硅波导中演变时所满足的线性和非线性传输方程，在此非线性方程中包括波导线性损耗、群速度色散和三阶色散等线性效应；同时也包含了自相位调制、简并双光子吸收、自由载流子吸收和自由载流子色散等非线性过程；当双光场在波导中传输时，脉冲之间的交叉相位调制、非简并双光子吸收和受激拉曼散射效应等非线性效应也被考虑。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。