First , the return signal model is set up . the target return signal , clutter which has gauss power spectrum and noise of the receiver are included 首先讨论回波信号的生成，包括斯威林模型目标回波信号，接收机噪声以及具有高斯功率谱的杂波模型。
So , basing on the chaotic theory we look sea clutter as a chaotic system , reconstruct the phase - space of sea clutter to forecast and eliminate the sea clutter 由于神经网络可对任意非线性函数进行模拟的特性,用海杂波模型数据对神经网络进行训练,重建海杂波的状态预测方程。
To describe the phenomena of stop - wave in the continuous traffic flow , a stop - wave model was built based on kinematic equation by analyzing kinematic characteristics of stop - wave spread 摘要为描述连续交通流中的停车波现象，分析了停车波传播的运动学特性，基于运动学方程建立了停车波模型。
The experiment results show that the stop - wave model based on kinematic equation can describe the stop - wave phenomena in the continuous traffic stream and the method of calibrating parameters is simple and feasible 结果表明，基于运动学方程的停车波模型可以描述连续交通流中的停车波现象，参数标定方法简单可行。
This fact has an important implication for extension to 3d configurations . comparing the synthetic seismogram by using cartesian grids with the synthetic seismogram by using the curved grid , it can prove the approach is effective 通过声波模型和弹性波模型在直网格下的合成记录与在曲网格下的合成记录的比较验证了方法的有效性与精确性。
The electromagnetic fields components of the te wave mode of a half - round waveguide are obtained theoretically , by using the conclusions of the rectangle and the circular waveguide , the superposition method and the mirror image method etc 摘要利用矩形波导和圆形波导的结论，并结合叠加法和镜象法等工具，从理论上分析给出半圆形波导的te波模型的电磁场分量。
In order to handle problem that the number of wavelet basis functions grows exponentially with the number of the dimension of input space , two wavelet models are presented . the former is a wavelet network constructed by single - scaling multidimensional wavelet frames 针对小波函数个数与空间维数呈指数增长关系，而给多维空间中建模带来的困难，给出了两种小波模型。
The overview of green - wave model , braking effect and steering probability effect were generalized on the basis of the existing research on cellular automata traffic flow model . the affection of many factors to be considered in the practical traffic system was summarized 在已有的交通流元胞自动机模型研究的基础上，对二维模型中的绿波模型、刹车效应和转向概率效应进行了综述，总结了在实际的交通系统中需要考虑诸多因素的影响。
The lichtenecher formula is used to culculate the electromagnetic parameters of radar absorbing coatings which are respectively made up of some adhesive and various radar - absorbing ingredients , the reflection loss formula ( rlf ) applicable to the homogeneous radar absorbing coatings is deduced according to the electromagnetic theory . accdingly , a radar - absorbing model which is proved reasonable is set up applicable to radar absorbing coatings . on the base , the prediction to performance , the electromagnetic analysis and the optimized designs of rams of various thickness , various absorbers and volume percentages are performed by programmed using basic and c + + 本文利用lichtenecker性能加和公式对涂层的等效电磁参数进行了模拟计算和分析，并根据电磁理论详细推导了涂层的反射损耗与其等效电磁参数之间的关系，建立了由胶粘剂和不同种类、不同体积分数的吸收剂组成的多层吸波涂层的吸波模型，并通过实验验证了该吸波模型的合理性。
In this dissertation , radar detection in hrr has been taken as background . the followings are main contents of this dissertation : ( 1 ) based on analyzing the targets and the clutter ’ s specific characteristics of hrr radar , the echo models of targets and clutter have been studied respectively ; the changes of targets ’ echoes in different elevation angles , azimuth angles and attitude angles have been analyzed ; then , the echo models of lfm radar clutter have been established 本文针对高距离分辨雷达目标检测开展研究,主要完成了以下几方面的工作: ( 1 )分析了高距离分辨雷达目标和杂波回波特征,在此基础上分别研究了高距离分辨雷达目标和杂波的回波模型,分析了不同俯仰角、不同方位角以及不同姿态下目标回波模型的变化,并建立了线性调频脉冲压缩雷达的杂波模型。
