In this paper, for solving the parameter problem of two dimensional wave equation, the method of Finite Element and the Pulse Spectrum Technique, i. e. the iterative process are used.
本文针对求解二维波动方程的参数问题，利用有限元方法把波动方程反问题转化为有限元反问题，并利用脉冲谱技术，即一个迭代过程进行求解。
We study the sidelobe suppression for the pulse compression of the LFM signal, and analyze the spectrum weighting and the impulse response weighting method.
本文研究了线性调频信号脉冲压缩的旁瓣抑制问题，分析了频谱加权法和冲激响应加权法的原理。对两种方法的谱平滑效果。
We have determined the pulse shape asymmetry in a synchronously pumped dye laser using the method of spectrum-resolved SHG correlation.
我们用光谱分辨的二次谐波方法测定了连续波同步泵浦染料激光脉冲形状的非对称性。
So various methods are proposed by scholars to solve these problems, such as pulse spectrum method, the best perturbation method, Monte Carlo method, optimized and regularization method.
因此许多学者提出了各种求解反问题的方法，比如脉冲谱方法，最佳摄动量法，蒙特卡罗方法，各种优化方法和正则化方法等。
The method of measuring the energy spectrum of a high current and short pulse beam using optical transition radiation is presented in the paper.
论述了用光学渡越辐射对强流短脉冲束团的能谱进行测量的理论和方法。
Then, a method exploiting the techniques of intersection of spectrum and multi-channel synthesis is presented to fulfill the pulse compression of the ultra-wideband signal.
在研究匹配滤波和重采样原理的基础上，利用频带分割和多通道综合技术实现超宽带信号的脉冲压缩。
A new method of the chirped-pulse spectrum shaping is put forward in this paper based on the above course.
提出了利用这一过程实现啁啾脉冲频谱整形的一种新方法。
Through the spectrum analysis of carrier pulse signals and the test results of carrier receivers, the author proposes further a method for selecting the…
通过对载波脉冲信号作频谱分析和载波接收机接收载波脉冲信号的试验，提出了选取调制脉冲宽度范围的建议。
Through the spectrum analysis of carrier pulse signals and the test results of carrier receivers, the author proposes further a method…
通过对载波脉冲信号作频谱分析和载波接收机接收载波脉冲信号的试验，提出了选取调制脉冲宽度范围的建议。
This paper presents the development of a pulse-echo measurement method, based on the use of a phase spectrum to determine the ultrasonic wave velocity. A detailed descripsion of the theory is given.
本文报道了一种基于脉冲回波相位谱的超声波速度测量方法，并给出了它的详细理论推导过程。
A new spectrum shaping method, based on electro-optic modulation, to alleviate gain narrowing in chirped pulse amplification (CPA) system, is described and numerically simulated.
提出了一种新型的基于电光调制的激光光谱整形方案，该整形技术可以减轻啁啾脉冲放大系统中的增益窄化效应。
A new spectrum shaping method, based on electro-optic modulation, to alleviate gain narrowing in chirped pulse amplification (CPA) system, is described and numerically simulated.
提出了一种新型的基于电光调制的激光光谱整形方案，该整形技术可以减轻啁啾脉冲放大系统中的增益窄化效应。
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