脉冲响应

D. Personick, of calculating the sensitivity of the digital optic receiver, the optimal gain of APD and the decision level, is based upon the waveform of input light pulse at the receiver.

本文提出以易于确定的发送端光脉冲波形及光纤展宽参σ＇作为计算出发点，并假定光纤对光脉冲的响应为高斯函数。

By using a soil modeling of three axes symmetry and considering three dimensions wave effect ,the longitudinal vibration characterisitic is analyzed on condition that a vertical force being harmonious and stimulating force is loaded upon the whole newel stake in the damping soil of homogeneous and detained material.

从三维轴对称土模型出发，考虑桩周土体的三维波动效应，对均质滞回材料阻尼土中完整端承桩在垂直协和激振力作用下的纵向振动特性进行分析，求解得到桩顶频域响应解析解、复刚度和速度导纳，利用卷积定理和傅里叶逆变换，求得半正弦脉冲激振力作用下桩顶速度导纳时域响应半解析解。

Meanwhile the linear operational mode and nonlinear operational mode of PCSS are analyzed In chapter 3, after simulating time-space distribution of electron and hole in photoconductor,the relations of laser energy,laser character and photoconduction are analyzed and the fundamental principles of nonlinear phenomenon is introduced.

在第三章中，通过研究各种重要的复合机制，漂移和扩散作用等对光导开关光电导响应的影响，建立了线性模式下的瞬态响应模型，模拟得到光导开关输出电脉冲特性曲线。

In the design of the power supply, the main circuit topology frame uses full-bridge series resonant switching and parallel load connection, in which, four MOSFETs are adopted as the power switches, and by four pulses which UC3879 produces, high frequency operation and fast response are realized. In addition, the MOSFET in the switching power supply has no hard turn-on or turn-off situation in transition, thus the disturbance to the power system is avoided. Especially,by the use of high frequency transformer, PQ50/50, the switching power system can provide the steady discharge current without any amperite.

此开关电源采用全桥软开关技术、串联谐振并联输出，四个MOSFET管为主控制开关元件，通过脉冲产生电路UC3879产生的四路相关脉冲实现了高频交替开关，同时能快速响应输出的各种变化；避免了开关管的硬开关，提高了转换效率，另外通过采用高频变压器PQ50/50隔离了原副边，减小了高次谐波对电网干扰；无需镇流电阻也可实现气体稳定放电。

In view of the principle of pointbypoint comparison method, the foundation deciding whether the middle point interpolation is the control step error of NC system has been advanced, the math mould of inserting and compensation method established and the function that judges error by interpolating method has been improved.

基于逐点比较法原理，提出中点插补算法作为数控系统控制步进的偏差判别依据，建立了插补算法的数学模型，对插补算法偏差判别函数进行了改进和完善。实例分析结果表明，中点插补算法使插补精度由原来的小于等于一个脉冲当量提高到小于等于 0 。5个脉冲当量，插补点大幅度地下降，系统的响应速度加快和插补精度提高

However, the CMOS image sensors can provide stronger anti-radiation capacity than CCD as well as Single Chip Integrating with image sensors array, drive and control circuit, signal processing circuit, A/D conversion circuit and Completely Digital Interface Circuit. The CMOS image sensors also possess high quantum efficiency, wide spectral response, good response uniformity, low supply voltage and low request of clock. At the same time, the small bulk, high reliability, low power consumption and low cost are the prominent advantages of the CMOS image sensors too, thus CMOS image sensor has more exploiture foreground in X-ray real-time radioscopy imaging system.

由于CMOS 图像传感器比CCD 具有更强的抗辐射能力，还具有将图像传感器阵列、驱动和控制电路、信号处理电路、模数转换电路、全数字接口电路等实现单片集成以及量子效率高、光谱响应宽、响应均匀性好、工作电压低、对时钟脉冲要求低、体积小、重量轻、功耗低、高可靠、低成本等优点，因此在X 射线实时检测中更具有开发前景。

It has been shown that the red shift due to delayed nonlinear response time in frequency domain increases with the increasing of delayed nonlinear response time exceeds a certain value.

结果表明，脉冲在长波方向的自频移随非线性响应时间的增大先增大后减小，利用这种关系有可能获得非线性响应时间的信息。

At present, most of the groundwater management models apply response matrix method, However, the discussion on suitable unit impulse quantity valuein Response matrix method is less.

目前，地下水管理模型研究中应用响应矩阵法耦合建模的较多，但对于响应矩阵法中适宜单位脉冲量的取值问题研究的较少。

But the intense pulse of laser transmission characteristics are not explain many phenomena, intense pulse of laser chirper identity testing methods have not been responded to the technical progress.

但是对于超短脉冲激光传输的特性尚有许多未解释清楚的现象，超短脉冲激光啁啾特性的检测方法的技术没有得到响应的进步。

The response of a short single-wire line excited by EMP was theoretically investigated and experimentally validated by means of an EMP simulator.

研究了有界波电磁脉冲模拟器下短线缆效应的理论建模和实验方法。基于传输线模型计算了线缆在有界波电磁脉冲模拟器辐照下的电流响应。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。