本文研究高速数字通信中的三分辨率调制解调技术。
A three - resolution modem technique for application of high rate digital communication system is investigated in this paper.
本文提出了一种新型结构的光纤光栅——包层折射率调制光纤光栅。
A new type of fiber grating, cladding index modulated fiber grating, is presented in this paper.
折射率调制的光纤传感器可用于测量稠油热采过程中的蒸汽干度测量。
Optic-fiber sensor on refractive index modulation can be applied to measure the steam quality in the process of viscous oil heating recovery.
新型包层折射率调制光栅可以由包层掺杂的光敏光纤经过侧面紫外曝光制成。
Through exposing the cladding photosensitive fiber to periodic ultraviolet, the new cladding index modulated fiber grating can be formed.
位相全息图一般既有浮雕调制又有折射率调制，它们都会对衍射特性产生影响。
A phase hologram not only has relief modulation but also has refractory index modulation, both modulation will affect the diffraction property of the phase hologram.
研究了光纤光栅不同折射率调制的实现方法，并设计研制了实现变迹曝光法的扫描装置。
We research the various index modulation methods and design the scanning device to realize the apodized exposure.
采用基于LP算法的IS光纤光栅设计技术，设计出CFBG的折射率调制函数和啁啾分布。
The index modulating function and chirp parameter distribution of the CFBG were synthesized by layer-peeling(LP) inverse scattering(IS) technique.
这项了不起的新技术，研究人员成为吸光率调制，使得制造出所用光线波长十分之一粗细的线条成为可能。
Remarkably, the new technique, which the researchers call absorbance modulation, makes it possible to create lines that are only about one-tenth as wide as the wavelength of light used to create them.
我们提出采用光学双稳装置来稳定光源输出功率，并将它用于折射率调制型光纤传感器测量液体浓度的实验中。
We suggested to stable the output light intensity by using the bistable optical device and use this new device to measure the density of liquid by refractive index modulation sensor.
同时，研究结果表明，这种新型包层折射率调制的光纤光栅可以为解决纤芯高光敏光纤光栅的高损耗问题提供一个较好的解决方案。
Meanwhile, the research results show that the new grating can be a solution to the high attenuation problem of the gratings with the high photosensitive fiber core.
聚合物单体由于光敏感性好、折射率调制度大和分辨率高等优点在全息聚合物光栅、光了晶体和光相位调制器等器件中得到广泛的应用。
Good photon sensitivity, large index modulation and high resolution make monomer in a number of applications such as holographic polymer grating, photonic crystal and light phase modulator.
我说这些肯定让你们觉得,我好像是台穿孔卡片计算机一样古旧，但我自己那时对自己,2400波特率的调制解调器相当自豪。
This makes me all sound like punched card computers to you, But for me i was very proud of my 2400 baud modem.
数值模拟显示，利用色散缓变光纤中的调制不稳定性可以产生高重复率的基本孤子脉冲串。
The numerical simulation also shows that fundamental soliton pulses with high repetition rate can be generated in this kind of fiber by modulation instability.
实验结果表明，该调制识别方法在小样本下具有较高的识别率，可以应用在数字信号的调制识别系统中。
The experiment results justify the high recognition rate with less samples, thus the method can be used in the digital signal modulation recognition system.
如果调制率高，是有可能顺利进行，脉冲列车使用被动电子过滤器和收回平均模拟波形。
If the modulation rate is high, it is possible to smooth out the pulse train using passive electronic filters and recover an average analog wave form.
多采样率滤波器组可以通过对线性相位低通原型滤波器进行余弦调制来实现。
Multirate filter bands can be realized by cosine modulation of a linear-phase low-pass prototype filter.
在数字正交调制原理的基础上，宽带信号的产生问题实际上转换为如何得到高采样率下的时域基带信号。
Based on the principle of digital orthogonal modulation, the generation question of wide-band signal is factually identical with how to generate base-band signal with high sampling in time domain.
青贮是解决上述问题较为理想的措施，具有适口性好，消化率高、饲喂效果好、保存期长、调制方便。
Silage is the idea way to resolve this problem. Ensiling has many advantages such as: good palatability, high digestibility, long storage, easy to production and mechanical operation.
它使用1200波特率贝尔202音频调制和第一位元的资料传送接收后首铃声。
It USES the 1200 baud Bell 202 tone modulation and the first bit of data is transferred after receiving the first ring tone.
高电子迁移率晶体管(HEMT)是利用异质结和调制掺杂技术制成的具有超高迁移率的场效应晶体管。
High electron mobility transistors (HEMT) is one of field effect transistors, which is made by modulation doped heterostructure technology and possess super high electron mobility.
仿真结果表明，自适应调制系统可以获得较高的数据吞吐量，而其传输中断率在一定条件下可以保持较低的水平。
Finally, the simulation results show that the adaptive modulation system can theoretically achieve high throughput performance, and low transmission outage probability under certain conditions.
相同的智能控制系统管理着高效的空调制冷系统，该系统也是根据整个室内环境和每个地方的入住率智能调节其冷气的输出量。
The same "smart" controls govern a high-efficiency a/c, which also varies its output according to general environmental conditions and occupancy in each space.
另一方面，对于MIMO - OFDM系统来说，自适应调制技术可以提高系统的数据传输率、频谱效率以及传输的可靠性。
On the other hand, adaptive modulation technique can enhance data rate, spectrum efficiency and transmission reliability in MIMO-OFDM systems.
从理论上分析了非线性折射率引起的脉冲自位相调制对超短脉冲的影响。
The article theoretically analyzes the impact of self phase modulation caused by nonlinear refractive index on ultrashort pulse.
描述成像光谱仪系统空间分辩率优劣的关键参数是系统的调制传递函数—MTF, MTF的检测是一个古老而又困难的课题。
The key parameter which describes the spatial resolution of imaging spectrum system is the modulation transfer function (MTF), it is an old and difficult topic to measure the MTF.
由分析得到，对于确定的光源光谱宽度，波导端面反射率只有取合适的值，才能取得最灵敏的调制效果。
By analysis it is shown that the maximal modulation sensitivity comes from an appropriate end reflection coefficients of OWFPM for a certain light source spectrum width.
为使星载激光高度计实现高空间分辨率，提出了一种联合采用伪随机码调制光纤激光器和单光子计数的测距方法。
A method combining pseudorandom modulation of the fiber laser and single-photon counting is proposed to realize a high spatial resolution for the space-borne laser altimeter.
模型中同时考虑了速度饱和效应、迁移率下降效应和沟道长度调制效应等。
In addition, this model is involved in the velocity saturation effect, mobility degradation effect and channel length modulation effect.
结果表明，数字调制具有分辨率高、全数字化可编程、相位噪声低等特点。
The results show that digital modulation is with high resolution, total digitalization programmable, and low phase noise etc.
结果表明，数字调制具有分辨率高、全数字化可编程、相位噪声低等特点。
The results show that digital modulation is with high resolution, total digitalization programmable, and low phase noise etc.
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