脉冲前沿

磁控管脉冲前沿抖动测试技术研究

Study of Pulse Leading Edge Jitter Measuring for Magnetrons

由于变频电机的波阻抗明显大于电缆的波阻抗，使得变频电机受到约两倍的脉冲前沿电压，导致变频电机线圈绝缘层在运行过程中发生局部放电。

Since the wave impedance of variable frequency motor being significantly greater than the wave impedance of the cable , making variable frequency motor suffer approximately the twice of pulse leading edge voltage , the coil insulation layer of variable frequency motor occurs partial discharge during operation .

一种缩短CW脉冲前沿上升时间的AGC电路

An AGC Amplifier with the Function of Shortening the Time Duration of CW Pulse Front Edge

另外本文通过分析MOSFET的内部结构，从MOSFET驱动原理上寻求了几种加快输出脉冲前沿的方法。

In addition , by analyzing the inside structure of MOSFET , three methods to quicken the pulse front edge are presented .

该仪器是基于脉冲前沿抖动的MIL标准定义，采用了单片机技术进行控制和数据处理。

The measurment was based on the definition of MIL standard , The measurment control and data processing were realized by the single chip .

得到的三脉冲前沿约20ns，间隔约为300ns，脉宽约120ns。

The rising time was about 20 ns , the distance between two pulses about 300 ns and the pulse width about 120 ns .

本文就磁控管的振荡脉冲前沿抖动的测试技术进行了研究，并研制了相应的测试仪器。

In this paper the technology of magnetron leading edge jitter measurment was studied and the measuring instrument was also developed .

光脉冲前沿、脉宽和相对于放电脉冲的延时均随y而明显变化。

The front edge , pulse width and time delay of the laser pulse relative to the start of laser discharge are varied obviously with γ .

当校正脉冲前沿上升时间一定时，前沿陡度随着幅值的增加而变大。

When the rise time of calibration - pulse is a constant , the slope of calibration - pulse is increased with the amplitude of pulse .

仿真结果表明，根据脉冲前沿到达时间差分布情况，使用脉冲前沿跟踪技术可以很好地提高导引头在多信号环境下的定向能力。

By simulation it is shown that the capability of direction finding for the PRS under the multi-signal environment can be enhanced greatly by using the pulse leading tracking technique .

结果表明序列的各脉冲前沿存在斯托克斯光增益；在一定脉冲结构和光强下，介质记忆效应占主导地位。

The gain expression of the Stokes light pulse is given , our results show that the memory effect is very important in high gain region and the Stokes light exists in the lead edge of pulses .

而且数值模拟结果证实了上述两种方案预期结果。最后，基于一维激光脉冲前沿有质动力加速电子机制，提出利用双激光脉冲增强电子注入方案。

The simulation results show that the schemes are viable . Lastly , a scheme to enhance the electron injection in one-dimension space by two laser pulses is proposed , basing on the theory of laser ponderomotive force accelerating electrons .

它用电容放电建立强功率脉冲的前沿，通过机组和电感贮能作用维持长脉冲平顶的供电，平顶持续时间长达2s以上。

The wavefront of the primary current with high power is set by the discharge of capacitor banks and can be adjusted between 2 to 12 ms , and the flat top is sustained for more than 2 seconds by a DC flywheel generator set and energy storage inductor .

为消除输出脉冲的前沿上冲和后沿拖尾现象，分析了脉冲形成线中的连接段与螺旋线阻抗的不匹配对输出波形的影响。

The influence of the impedence mismatching between the joint section in pulse forming line and the helical line on the voltage waveform of the diode was analyzed .

实验测量了铁氧体传输线对高压电脉冲的前沿锐化效应以及偏置磁化电流对电压波波前传输速度的影响。

The electrical pulse sharpening effect in ferrite transmission lines and the dependence of transmission speed of voltage wavefront on the bias magnetization current have been observed in detail .

基于脉冲包络前沿波形的雷达辐射源个体识别二维脉冲及伪彩色多普勒超声心动图术前诊断右冠状动脉瘘

A specific emitter identification method based on front edge waveform of radar signal envelop Preoperative Diagnosis of Right Coronary Artery Fistula Using Two-dimensional Pulsed Doppler Echocardiography and Color flow Imaging

结果表明：使用气体开关比油、水介质开关时所获脉冲电压前沿快、电压传输效率较高，并对实验结果进行了讨论分析。

The results show that compared with the oil switch and the water switch , when the gas switch is used , the rise-time of pulsed voltage is shorter and the voltage transmission efficiency is higher .

通过对比转速脉冲波形的前沿与燃烧振动波形的前沿，即可求出喷油角的大小；

By comparing the front edges of the rotating speed pulse wave and the combustion vibration wave , the fuel-ejecting angle can be calculated .

对模拟局部放电的窄脉冲和陡前沿脉冲沿电缆的传播特性进行了实验研究。

The propagation characteristics of a simulation partial discharge ( PD ) pulse and a steep front pulse in the XLPE power cable are investigated .

在两段不同长度的电缆首端分别注入窄脉冲和陡前沿脉冲，同时记录首末端波形；

Both the narrow pulses and the steep front pulses are applied to the initial terminal of the XLPE cable respectively , and the oscillograms at both terminals are simultaneously recorded using a digital oscilloscope .

结果表明：脉冲电流使界面前沿液相中的溶质浓度降低，溶质扩散层厚度减小，脉冲电流显著增大固液界面前沿液相中的温度梯度。

The results show that ECP can decrease solute concentration and solute boundary layer thickness nearby front of solid-liquid interface , and increase remarkably liquid temperature gradient at interface .

研究表明，该电磁脉冲模拟器可以产生前沿约10纳秒的核电磁脉冲波形。

The investigation indicates that the numerical results agree with the experimental results and the waveforms of nuclear electromagnetic pulse with10ns rising time can be established in the simulator .

实验结果表明，激光产生于主脉冲电流波形的前沿，此时的主脉冲电流是其峰值的65%&75%。

The experimental results show that the soft x-ray laser is produced at the rise-time of the main discharge current which is 65 % & 75 % of the peak at the lasing time .

超宽带高功率电磁脉冲技术具有脉冲前沿上升时间短、峰值功率高、工作频带宽等特点，具有很高的军事和民用应用价值。

Ultra-wideband high power electromagnetic pulse technology has the characteristics of short pulse rise time , high peak power and wide frequency band , etc , which has high value of military and civil applications .

大型短脉冲激光装置中脉冲前沿畸变效应的研究

Pulse-front-distortion in large-aperture short-pulse laser systems

阐述了短脉冲激光装置中脉冲前沿畸变效应的产生机理和可能的畸变源。

The principles of pulse-front distortion 's production and its possible sources in a large-aperture short-pulse laser system are described .

透镜色差使焦点附近的脉冲（特别是脉冲前沿）显著展宽，能量密度分布展宽，峰值功率降低。

The lens chromatic aberration leads to a drastic broadening of the pulse form ( especially in its front ) and the energy density distribution and to a decrease of the peak intensity .

本文用火花电阻公式研究了高压毫微秒脉冲参量（脉冲幅值、前沿、宽度）与储能电容的关系。

This paper discussed the relations between pulse parameters ( the amplitude , rise time and half-width of the pulse ) of the high-voltage-subnanosecond-pulse-tube ( HVSPDT ) and storage capacitance .

在整流系统中，脉冲触发电路十分关键，触发脉冲的前沿、功率、移相范围，直接影响到电路工作的质量。

In the rectifier system , the circuit of triggering pulse is critical , The forefront , power and phase shift range of the pulse have a direct impact on the quality of the circuit .

电路输出脉冲幅度达1.2KV，输出阻抗50欧姆，脉冲前沿小于3ns。

The output voltage ranges 1.2 KV into 50 ohm load . The rise time of the circuit is less than 3 ns .