查询词典 modulation capability

After theoretically modeling,experiments were carried out to measure a CW laser modulation spectrum generated by a diode laser and an EOM device with the proposed method.

本文在理论建模与分析的基础上，利用该方法对半导体激光器出射激光经电光调制器调制产生的调制光谱进行了测量，测量结果与F-P 干涉仪测量结果一致，验证了该方法的可行性。

After theoretically modeling, experiments were carried out to measure a CW laser modulation spectrum generated by a diode laser and an EOM device with the proposed method. Compared with the measuring results with F-P interferometer, experimental results show the feasibility of an optical beat frequency method.

本文在理论建模与分析的基础上，利用该方法对半导体激光器出射激光经电光调制器调制产生的调制光谱进行了测量，测量结果与F-P干涉仪测量结果一致，验证了该方法的可行性。

This paper describes a feasible calibration method, its basic principle for calibrating is: A certain function relationship is existed in equivalent inductance L of coil and the distance x between the object to be measured and the sensor coil, the measurements can be conducted with this function relationship by using frequency modulation. The calibrating system consists of measuring electric circuit, high stable voltage power supply, digital frequency meter, the conductor to be measured and the calibrated displacement sensor.

文中叙述了一种较为可行的标定方法，其标定的基本原理为：线圈的等效电感L和被测物体与传感器线圈的距离x存在一定的函数关系，利用这种函数关系用调频法进行测量，标定系统由测量电路、高稳定度稳压电源、数字频率计、被测导体及被校位移传感器组成。

It is based on the method of modeling mobile voice channel and system identification is made so that the waveform samples are designed in frequency domain with less signal distortion.Then the waveform codebook is gotten by a genetic algorithm which has the maximum Euclidean distance.Thus,the modulation and demodulation are equivalent to the mapping from index to waveforms and from waveforms to index.

提出了对移动话音业务信道建模的思想，通过系统辨识获得模型的频率响应特性，在波形畸变较小的频带范围设计波形频谱，采用遗传算法在时域样本空间全局寻优获得欧几里德距离最大的波形码本，通过码本索引值和波形矢量的映射和解映射来实现数据的调制和解调。

The semiconductor optical amplifier- cross gained modulation wavelength converter in the core node is used to transfer the payload from the old label to the new label to achieve the label erasion and insertion.

基于此光标记系统，研究Mach-Zehnder调制器的消光比、半导体光放大器的偏置电流、接收模块的输入功率、泵浦光功率、探测光功率对误码率的影响，以及转换波长与转换效率的关系。

To reduce the negative effect of channel estimation error, a dynamic adaptive modulation scheme is proposed.

为降低信道不完美的影响，提出了动态自适应调制方案。

The Modulation Transfer Function is an essential parameter in satellite imaging system.

MTF是反映卫星成像系统性能的重要参数。

Modulation transfer function is an essential parameter which characterizes imaging quality of satellite optical camera.

1引言调制传递函数是对卫星光学相机成像性能进行评估的一个重要参数，该函数反映了相机的两个重要特性，即所成图像的分辨率和对比度，它是目前评价光学相机空间特性最好的参数[1]。

According to the system specification of DRM given by ETSI, the channel coding scheme applied to the system is a set of combination schemes of the multilevel coding and modulation.

根据欧洲电信标准化委员会提供的数字调幅广播系统说明书可知，该系统采用的信道编码方案是一套基于删除卷积码的多级编码和调制的组合方案，它机制灵活，可以针对不同的数据通道和不同的信道条件选择不同码率的分量码和星座图。

Simulation results are presented to prove the exactness and effectiveness of the modulation approach.

仿真结果证明了这种调制策略的正确性与有效性。

Don not attempt to do something which you can not to do.

不要企图做那些办不到的事情。

The expression of CTGF and TNF-αweredetected by immunochemistry and the number of Clara Cells was calculated.

光镜下观察肺组织的病理变化，采用免疫组化染色观察肺组织中结缔组织生长因子和肿瘤坏死因子-α的表达和Clara细胞的数量。