| 1. | We must shape to the signal pulse
这时必需将信号脉冲整形。 |
| 2. | A study of the shaping of signal pulse under the condition of a synchronous pulse pump
同步脉冲泵浦下信号脉冲整形的研究 |
| 3. | Laser light - scattering event - a signal pulse that locates surface imperfections on a wafer
激光散射-由晶圆片表面缺陷引起的脉冲信号。 |
| 4. | Analysis of compression characteristics of gaussian signal pulse in semiconductor optical amplifiers by utilizing rectangular control pulse
矩形控制脉冲在半导体光放大器中对高斯信号脉冲的压缩效应分析 |
| 5. | It emphases on the system of signal pulse signal channels , and sets forth the methods of realizing 、 way of demodulation 、 advantage and disadvantage . afterwards , the paper introduces how to design a “ s band remote measuring receiver ”
重点介绍了单通道单脉冲跟踪体制,对其实现途径、解调方式、较其它体制的优缺点作了全面的阐述。 |
| 6. | In this paper , we frist discuss the radar signal pulse and it ' s parameters , then we introduce the principle and method of the measure . at last we introduce how to get the pa , pw and toa based on xilinx spartan - ii fpgas
本论文首先对脉冲及其参数进行了分析，然后介绍了雷达脉冲参数测量的原理，并针对现代复杂电磁环境的特点，对脉冲参数测量的方案进行了设计。 |
| 7. | The optical channel models for airborne submarine laser communication are built . the multipath time spreading of signal pulse is studied . the waveform of received signals in receiver in submarine laser communication system is analyzed and simulated
通过蒙特卡罗方法的模拟研究，建立了机载激光对潜通信的光脉冲传输模型，研究了信号光脉冲的时间扩展，分析并模拟了接收面上的接收波形。 |
| 8. | At present , signal pulses produced by directly modulated laser diodes have been used in optical fiber communication systems . the experiment reveals that the optical pulses from directly modulated laser diodes are far from gaussian and have near - rectangular temporal profiles with much sharper leading and trailing edges , and then a super - gaussian model , which assumes that an incident optical pulse has a super - gaussian profile , may be more suitable
但在实际的光通信系统中，人们常采用由直接调制半导体激光器产生的光脉冲作为信号脉冲，而实验结果表明这种脉冲具有比高斯脉冲更为陡峭的前沿和后沿，其脉冲形状更接近于超高斯分布，并且通常还带有一定量的啁啾。 |
| 9. | Agrawal ' s theory model of soa ca n ' t simulate accurately the amplified signal pulse shape in soa when the pulse width is as short as several picosecond . so we simulate accurately the peak power , full width half maximum , rising time and falling time of amplified pulse after considering the gain compression , gain asymmetry , gain shift , gain variable with situation and time . with ultrahigh velocity dense wavelength division multiplexing ( dwdm ) and optical time division multiplexing ( otdm ) developing , we demand more and more short signal pulse and more signal channels
但当信号脉冲的宽度只有几个皮秒时， soa传统的agrawal理论模型已经不能完全准确地模拟soa对信号脉冲的放大情况，在此基础上，我们在全面考虑soa的增益压缩、增益非对称和漂移、增益随位置和时间变化的载流子寿命等物理机制的情况下，对皮秒超短高斯信号光脉冲经soa放大后的脉冲的峰值功率、脉冲半值全宽度、脉冲的上升时间和下降时间等重要物理参量进行了准确模拟和详细研究。 |
| 10. | In the picosecond and femtosecond time field , the durations of the pump and signal pulses are so short that special propagating characteristics of ultrashort pulse laser should be taken into account , especially the pulse broadening induced by the group velocity mismatch and the group velocity dispersion
在皮秒和飞秒时域，由于泵浦光与产生的信号光的持续时间特别短，故在讨论超短脉冲与物质相互作用时必须计及超短脉冲在介质中传输的特殊性质，尤其是群速失配与群速色散引起的脉冲展宽。 |
