查询词典 synchronizing pulse

Its final target is to fully digitize the analogue receiver. The all digital receiver not just means digitizing every unit of the analogue receiver, but is a new receiver architecture. The two outstanding characters of this new architecture is: 1 It uses a high stable oscillator to generate a fixed frequency source. And both the sample signal and the local carrier required are obtained from it. 2 Once the received signal has been sampled by a high speed A/D converter, some digital signal processing algorithms will be used to realize all further processes, such as digital down-converting, match filtering, symbol timing, channel equalizing, carrier synchronizing, demodulating and decoding.

全数字接收机并不是简单地将传统的模拟接收机中所有的部件数字化的结果，而是一种全新的接收机体系结构，这种新的体系结构具有两个最为突出的特点：1）采用高稳定度晶体振荡器产生一个固定的本地频率源，接收机中所需的采样时钟信号和本地载波均从这一固定频率源得到；2）接收信号一旦经过高速模数转换后，余下的工作如频率变换、匹配滤波、定时同步、信道均衡、载波同步、符号解调、判决与译码等全部由数字信号处理算法来实现。

The function of pulse power system of LIA is generating accelerative pulse and providing it toaccelerate electronic beam synchronously.

在直线感应加速器中，脉冲功率系统的作用是向加速器提供与被加速电子束同步的加速脉冲。

In the experiments, it was found that the momentum coupling coefficient of multi-pulse propulsion was lower than that of the single pulse case for the air-breathing mode.

研究了大气模式激光推进中多脉冲推进的冲量耦合系数低于单脉冲推进的冲量耦合系数的机理。

The performance of 2-level pulse amplitude modulation and analogue pulse width modulation system based on self-error-correction code was analyzed.

基于自纠错码的二级脉冲幅度调制与脉冲宽度调制光纤传输技术，对系统中的接收机灵敏度进行了分析。

The mutual coherence and angular correlation function of scattered wave from two dimensional rough surfaces is derived with Integral Equation Model and then calculated for perfectly conducting rough surfaces, then the scattering of incident pulse wave with different shape is calculated and the shape of scattered pulse is presented.

采用积分方程法推导出了二维粗糙面的双频互相关和角相关函数，数值计算了具有不同粗糙度的良导体粗糙面的双频互相关函数，在此基础上分别计算了二维粗糙面对δ脉冲、Gaussian脉冲和矩形脉冲的散射，并给出了散射脉冲的波形。

The mutual coherence and angular correlation function of scattered wave from two dimensional non-Gaussian rough surfaces is deduced using the Gram-Charlie distribution, then the pulse scattering from two dimensional rough sea surface is calculated, and pulse broadeding is discussed.

基于Gram-Charlie分布函数并利用三阶统计特性推导出了非Gaussian二维粗糙面的双频互相关和角相关函数的计算公式，并以二维海面为例计算了其对几种典型波形脉冲的散射，讨论了脉冲展宽效应。

We firstly bring forward and realize technologies of arbitrarily shaping laser pulse in the time domain by chirped pulse stacking, programmablely shaping spatial intensity by crystal liquid diaphragm, focused spot smoothing using angular spectrum dispersion by special gratings and detecting and compensating the small patch wave front aberration. Precise, programmable, efficient and \'all parameters\' condition of high power laser system has been obtained.

首次提出并实现了啁啾脉冲堆积型的时间波形任意整形；液晶光阀可编程光强空间整形；特殊光栅光谱角色散焦斑束平滑和小尺度波前畸变的探测和补偿，从而对高功率激光系统的激光束实现了高精度、可编程、有效的"全息"控制。

The comparison of the three noise values indicated that while the product of pulse width and angular frequency is larger than 1, the pulse width jitter would contribute considerable power to the total noise power spectrum, which is consistent well with the theoretical analysis.

比较三个噪声值表明了：在脉冲宽度角频率积Tω＞1的情况下，脉冲宽度抖动对总噪声量有较大贡献，脉冲宽度抖动不可忽略。

Analysis of ASCA observation of the X-ray pulsar 1SAX J1324.4-6200, we get precise pulse period, and find that it is significantly larger than the pulse period determined from previous observations, agreed well with a linear spin-down of the pulsar.

对X射线脉冲星1SAX J1324.4-6200的ASCA观测作了分析，获得其准确的脉冲周期及周期的演化，指出它可能是一低质量X射线双星系统。

Objective The experiment copied the wiry pulse by hurting rabbits and internennous drop infusing noradrenalin in rabbits and dogs,using NX-3 multifunctional sphygmograph to note the change of the sphygmogram, analyzing the time domain parameters,and classifying them attributively. It is a benefiting research work for teaching Chinese Traditional Medicine pulse diagnosis, although for applying Chinese Traditional Medicine indication to developing new Chinese drug.

目的 本实验通过对家兔疼痛刺激和对家兔、犬静脉滴注去甲肾上腺素复制动物弦脉模型，使用 NX-3 型多功能脉图仪记录压力脉图，对脉图时域参数进行分析并进行脉象的属性归类，为中医脉诊教学，也为今后新药研发中加入中医脉诊指标作初步的探索。

The quality of both red and white wine depends very much on the wine maker talent and on the quality of the grapes.

他的红酒和白酒的品质，根据酿造者的能力和葡萄的质量，各有差异。

No, I don't want to get drunk before my next match.

" "不，我不想让我的下一场比赛前喝醉了。