脉冲时间调制

Spectrum control technology and its application researchBasic theory of smoothing by spectral dispersion in high-power laser system was studied. Periodical frequency modulation was obtained by chirped pulse stacking, and novel special gratings were proposed here to obtain angular spectral dispersion and temporal smoothing of focal spot.

并在国际上首次成功地应用于激光聚变高功率激光系统中。3、激光脉冲光谱控制技术及应用研究研究了高功率激光光谱色散平滑的基本理论，提出利用堆积啁啾脉冲的周期性光谱调制特性和新颖特殊光栅实现光谱角色散和激光束远场焦斑的时间平滑。

In order to drive a high impedance load such as HPM sources, it is necessary to commutate FCG's long pulse width, high-current and low voltage pulse to a short pulse with high voltage.

为用FCG驱动象HPM源这样较高阻抗的负载，必须使用脉冲功率调制电路把FCG产生的低电压、大电流、上升时间长的电压脉冲转化为高电压、上升时间短的脉冲。

The results show the temporal pulse shape modulation is affected by the broadening factor and the delay time, as spectrum modulation is only affected by the delay time, and the intensity factor changes similarly with the cosine function of the phase factor.

研究结果表明，时间调制与基元脉冲的展宽量及相邻脉冲之间的延迟时间有关，光谱调制只与相邻脉冲之间的延迟时间有关，而强度的演化则与相位因子的余弦函数演化具有一定的相似性。

After introducing to the inner structure and the driver timing of a interline area-CCD KAI-1010M briefly,a high speed and low cost CCD driver circuit used in digital space survey camera was designed in a new way.

介绍了行间转移面阵CCD芯片KAI-1010M的内部结构和驱动时序，采用新方法和低成本器件设计了该CCD芯片的驱动电路，把电源和电机控制的脉冲宽度调制技术引入CCD驱动电路，采用超高速运放驱动高速负压信号以减小其上升沿和下降沿时间，达到高速低成本驱动要求，解决了驱动设计中的技术难点。

We used counting - interpolation time interval measurement principle and alternate storage ZDT, refined arming timing into two different measurement timing, pointed out requirement of zero dead time arming under different modulation domain measurements , gave the design of zero dead time module in modulation domain pulse analyzer, and introduced the realization method in detail. The correctness of the method has been verified in work.

文章采用计数-内插时间间隔测量原理和交替存储ZDT，并将触发时序提炼为两种不同测量时序，通过分析，指出不同测量时序下实现调制域测量功能对无死区触发要求，给出调制域脉冲分析仪无死区触发模块设计方案，详细介绍无死区需求实现方法，并已在工程中验证了该方法的正确性。

The beam pulsing subsystem generates three beam pulsing signals to chop and buncher the beam,and one "start" signal for lifetime measurement.The time measurement subsystem measures the time interval of the "start" and the "stop" signal from PMT.

其二为高精度时间测量电子学系统，该系统必须对脉冲调制电子学系统给出的时间起始信号和探测器给出的时间停止信号进行高精度的时间间隔测量，以达到谱仪装置好于200ps的时间分辨。

The effect of timing-jitter on the bit error rate performance of the Gaussian monocycles in pulse position modulated time-hopping UWB systems is investigated and simulated in this paper under various channel conditions, including additive white Gaussian Noise channel and multiple access interference.

本文详细推导出在单链路以及多用户环境中时间抖动对高斯脉冲的跳时脉位调制超宽带系统的性能影响的数学表达式，并作了相应的仿真分析。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。