查询词典 chirp

Based on the nonlinear chirp measurement in reference channel and phase-shift algorithm, a compensation method is proposed, which filters and proofreads the target backwave one by one, and mathematical flow of this method is established.

基于参考通道非线性测量和相移计算进行目标通道啁啾非线性补偿的概念，提出了一种对目标物点反射信号逐一滤波和校正的方法。

A dry, strangulating birth. Not a wail, not a chirp.

这是干燥、快把胎儿勒死的出生，没有一声哭号、一声喊叫。

The simulation results indicate that adjusting pump power properly can control transient effect, and increasing modulation frequency can weaken cross modulation, and decreasing frequency chirp of LD or enhancing the input power of signals can improve intermodulation distortion.

仿真结果表明，调整泵浦功率值可抑制瞬态效应，提高调制频率可使串话减弱，减小激光器的频率啁啾或增大EDFA的输入光功率都可改善IM2。

However, Results of wavelet analysis of linear chirp signals are beelines on time frequency scheme.

通常情况下，线性调频信号小波变换的结果在时间尺度图上呈现曲线的形式，而在时频图上呈现直线的形式。

Fireflies flash, moths spray pheromones, bees dance, fish emit electric pulses, lizards drop dewlaps, frogs croak, birds sing, bats chirp, lions roar, monkeys grunt, apes grimace, and humans speak.

萤火虫发出一闪一闪的光，飞蛾用激素吸引异性，蜜蜂翩翩起舞，蜥蜴扇动垂肉吸引异性，青蛙呱呱地唱，鸟儿啁啾，蝙蝠吱吱，狮子咆哮，猴子嗷嗷，猿做着鬼脸，人类交谈。

The pressure responses of polymer packaged fiber Bragg grating sensor are analyzed, a special kind of pressure-resistant polymer is used to coat FBG in a metal tube. A kind of soft elastic material is used to reduce the friction between tube and polymer, and to eliminate chirp effect caused by different friction distribution to improve the pressure response of FBG.

分析了聚合物封装光纤光栅的压力响应特性，通过采用特殊聚合物材料将光纤光栅封装于金属套管中，并通过在金属套管预涂覆一层软弹性材料，以消除封装过程中由于聚合物固化收缩以及聚合物与套管壁粘接与摩擦产生的光纤光栅啁啾化，改善了光纤光栅压力响应特性。

The temperature response and sensitivity enhancing technology concerning fiber Bragg gratingis analyzed.A special kind of heat-resistant polymer is used to coat FBG to enhance the temperature sensitivity of FBG sensor.The polymer coating and solidifying process of FBG is improved.A kind of heat-conducted adhesive is used to reduce the friction between tube and polymer,and eliminate the chirp effect of FBG caused by the asymmetric shrinkage of polymer during the package process.The experimental results show that the FBG sensor can measure temperature from 20℃to 180℃.

简要分析了光纤布拉格光栅的温度响应及增敏原理，采用特殊耐高温有机聚合物对光纤光栅进行温度增敏封装，并通过改进光纤光栅的聚合物封装固化工艺，使用某种有机硅导热胶减小有机聚合物与套管材料的粘合度，消除了封装过程中由于聚合物材料不均匀收缩引起的光纤光栅反射谱啁啾化，实现20~180℃范围内光纤光栅传感器对温度高灵敏度测量。

The chirp parameter of modulators is an important index of performance evaluation in fiber-optic communicalion system.

在光纤通信系统中，调制器的啁啾参数是衡量调制器性能的重要参数之一。

Soliton interaction with chirp from optical source in nonlinear monomode optical fibers is studied numerically by using slit-step Fourier transform method in detail.

本文采用分步傅氏变换法对非线性单模光纤中源啁啾孤子相互作用进行了详细的数值研究。

The wavelength resolution of the sensing measurement is 0.05nm. A novel FBG Bourdon tube sensor has been constructed, utilizing the pressure mechanic amplify function of Bourdon tube. The measured pressure sensitivity is two orders of magnitude higher than a simple monomode fiber with an in-fiber grating. Especially the pressure sensitivity of the sensor can be determined by changing the parameters of the cantilever beam. Adopting polymer package technique, we coat fiber Bragg grating by using polymer with different mechanic properties. Due to the driving effect of the polymer substrate, the enhanced pressure sensitivity is more than 20 times and 31. 7 times than that of a bare fiber grating. The packaged grating exhibits no significant chirp due to the adoption of special packaging technique.

全部采用国产元器件，成功地研制了掺铒光纤超荧光宽带光源，并将其组装成仪器；设计了利用可调谐FBG滤波器对光纤光栅传感信号进行检测的实验方案，对这一传感检测方案进行了理论分析和实验研究，由于采用了高性能的光电测量系统，传感测量的波长分辨率可达2pm，对应的应变分辨率为1.7με，在此基础上对FBG的波分复用传感特性进行了研究；对比调谐滤波检测技术，对光纤光栅可调谐光源波长检测技术进行了理论分析；采用长周期光纤光栅作为边带滤波器，对光纤布拉格光栅的传感信息进行解调，设计了一种全光纤传感测试系统，其波长分辨率可达0.05nm。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。