基于AD9874 芯片的数字接收机，我们提出了一种扩展数字接收机谱宽的二次抽取算法。
We propose a second decimation algorithm for widening the range of sweep width in the AD9874 based digital receiver.
两光波扰动频率的大小关系会影响不稳定增益谱的谱宽、峰值和形状。
The shape, width and peak of the power gain spectra of modulation instability will be influenced by the size relationship of the perturbation frequencies of the two waves.
对给定的传输距离，随着光纤向零色散附近靠近，两个频谱区谱宽增加直到相互重叠。
For a given dispreading distance, the widths of the two spectrum regions increase until overlay when second-order dispersion approaches zero.
测量了调q后激光输出的能量、动静比、脉宽、谱宽等，并从理论上进行了一些分析。
The laser output energy, dynamic to static ratio, pulse bandwidth ana spectral line width etc. by Q-switching ware measured and analysed theoretically.
研究结果表明，群速度色散（GVD）对大啁啾脉冲的影响很小，谱宽对自聚集的影响可以忽略。
The results showed that the effect of group velocity dispersion(GVD) on the pulse with large chip was slight and the effect of spectral width on the self-focusing properties could be ignored.
对于具有一定谱宽的X射线源，应选择谱宽尽量小的源，以获得含信息量丰富、分辨率高的图像。
For X-ray source with a certain spectral width, the source with minimum spectral width as possible to get the high resolution images with rich information should be selected.
发现自变陡效应使增益谱的谱宽变窄、振幅的增长速度减慢，而且其影响程度与色散缓变参量有关。
It is found that the main effect of self steepening is the reduction of the growth rate and the frequency range over which the gain occurs.
分析了泵浦光的谱宽以及测量所选用的滤波器的带宽对下转换产生的信号光和闲置光分布范围影响。
We theoretically analyzed the effect of both pump and detection bandwidth to the distribution range of photon pairs generated by SPDC process.
原子吸收谱宽对阈值泵浦强度的影响是非线性的，随着原子吸收谱宽的增加激光器光光效率出现饱和下降；
The influence of atomic absorption linewidth on threshold pump intensity is nonlinear, and as the absorption linewidth increases the efficiency will saturate and finally decrease.
在雷达动目标检测等处理中，为了有效抑制杂波，并防止目标白化，首先需要对杂波谱中心和谱宽进行有效的估计。
In radar signal processing systems, the central frequency and bandwidth of clutter must be accurately estimated to suppress clutter and prevent target whitening.
在天气回波信号谱宽固定的情况下，通过改变天气回波信号的平均多普勒频率，分析了回归滤波器对它的衰减情况。
Fixing the spectrum width of the weather echo signals, we change theirs mean Doppler frequency and filter them using regression filter. After filtering, we analyze the attenuation of them.
针对基于AD9874芯片的数字接收机的最小谱宽和谱宽允许设置的数目均不能满足常规临床用磁共振成像技术的要求，本文从软件角度提出了一种扩展数字接收机谱宽的二次抽取算法。
Here we propose a second decimation algorithm for widening the range of sweep width in the AD9874 based digital receiver to meet the sweep width requirement set by the clinic imaging pulse sequences.
由于半导体光放大器的宽增益谱与滤波器的较大可调谐范围，使得激光器输出可以在较大的波长可调谐范围内保持较大功率输出。
With broad gain spectral width of SOA and large tuning range of filter, the output power of the output pulse train could keep big enough over a large tuning range.
介绍了宽谱段傅里叶变换镜头中光学玻璃的折射率、色散变化对系统的成像质量的影响。
The effect induced by the increment of refraction index and dispersion of glass in the wide bands FT(Fourier Translate) lens were introduced.
在拉伸和松弛过程中，宽谱线和窄谱线的相对强度和旋转相关时间也随着发生变化。
The wide and the narrow spectra vary sharply in their intensities and rotational correlation times with the stretching and relaxation processes.
本文研究发现光学支声子模对谱线热增宽有一定影响。
This paper, we discovered that temperature linewidth is influenced by the optical branch.
环境水样本微生物杀灭试验结果显示，宽宿主谱株噬菌体对环境水样本中的E。
Treating the sewage water with phage under broad host range, the germicidal test showed that the cleaning rate of E.
本文用17O-NMR研究了饮用水所具有的团簇结构特征与谱线半峰宽的关系。
The relationships of Using 17O - NMR to study drinking water cluster structure between full width at half maximum intensity.
目的：1，观察高强度宽谱红光治疗寻常性痤疮的疗效和安全性。
Objective:1, To observe the curative effect and security of curing acne with high intensity light with wide spectrum .
有机材料本身固有的宽谱带发射使有机电致发光器件的色度难以达到全色显示所要求的饱和色。
Due to the intrinsic broad spectra of the organic materials the chroma of the organic light emitting diode (OLED) can not meet the need of the full color display.
分析气体辐射常用的三种模型：灰体模型、窄谱带模型和宽谱带模型的适用性，以及这三种模型的常规使用方法。
The dissertation analyses the applicability of three models of gas radiation computation: the gray model, the narrow band model and the wide band model, and analyses the normal method of using them.
杜氏变换是一种将信号从时域到门宽域的变换，用信号的宽谱密度来描述信号的特征。
The Du-conversion is one that converse the signal from time domain to gate-width domain and uses the wide spectrum density of the signal to show its characteristics.
清华大学研制的小型飞行时间质谱计（TOFMS）体积小，且具有质量范围宽，全谱分析快等优点，分辨率亦满足要求。
The novel Mini-TOFMS developed in Tsinghua university not only has a large mass range and a high analysis speed, but also realized good resolution in a small volume.
利用多普勒增宽谱和电子顺磁共振研究了掺硼和掺硫金刚石薄膜的缺陷状态。
The defect properties in chemical vapor deposition diamond films doped by sulfur and boron were investigated by the Doppler broadening measurements and electron paramagnetic resonance (EPR).
论文主要研究基于宽谱光源的光纤光栅传感器的解调技术。
The thesis focuses on the study on interrogation of fiber Bragg grating (FBG)sensors with a broadband source.
多普勒增宽谱的结果表明，不同杂质元素掺杂的金刚石薄膜，其中使正电子湮没的缺陷种类是相同的；
The results show that the defects annihilating the positrons is almost the same in various doped films, and the interactions between the dopants and the positrons are not distinct.
从群众测谱学在胚胎的干细胞把II保险一同样宽范围收集成卷。
Volume II covers an equally wide spectrum, from mass spectrometry to embryonic stem cells.
从群众测谱学在胚胎的干细胞把II保险一同样宽范围收集成卷。
Volume II covers an equally wide spectrum, from mass spectrometry to embryonic stem cells.
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