Then the structure description model of c4isr system , the edit tool and the integrative simulation platform are designed and implemented . moreover , the approach of analyzing data based on simulation in this thesis separates the analysis of simulation data from the simulation entirely . therewithal , whether a user builds the hierarchical model of evaluation or visualizes the data , he can define them himself after simulation finished 设计并实现c ~ 4isr系统结构描述模型编辑工具，提出基于仿真的数据分析方法将仿真数据分析与仿真的分离，无论是评价层次模型的建立还是数据可视化，均可以在仿真结束后由用户自己定义，而且可以定义指标与仿真数据之间的关系，层次模型的计算也可以是非线性的或调用已经编制好的模型。
The simulation data of the flexible projecting beam with different crack flaw is different . so we can build bp neutral - work to identify the position and the length of the crack in the flexible projecting beam by the simulation data . the input vector of bp neutral - work is the simulation data becomes , the training object is the position and the length of the mapping crack Bp神经网络是一种多层的前馈型人工神经网络，可实现从输入到输出的任意非线性映射，所以选取bp神经网络可以有效地实现从观测信号到裂缝所处位置以及裂缝长度的非先行映射，以达到对柔性悬臂梁上裂缝缺陷的智能诊断。
With the frequency division of wpd , etm uses shannon entropy as the criterion of determining whether or not dsi exist in certain wpd tree nodes and interference are suppressed successfully . lots of simulation data , lab data and on - site data have indicated that etm works with good efficiency , without pre - knowing of dsi information , extracts the phase of pd pulses accurately and can calibrate quantity of single type discharge 大量的仿真数据、实验室实测数据以及现场实测数据处理结果表明，小波包变换熵阈值法抑制干扰能力强，无需事先确定干扰的分布，能够准确检测局部放电信号的相位信息，对于单一的放电类型，可以确定放电量的大小。
Then compound - gaussian distribution model is been introduced and the three adaptive algorithms been derived from the model . by using simulation data and ipix radar sea clutter data that is been added target signals the performances of the detection algorithms are been simulated and analyzed . the same conclusion and the adaptive algorithms " effectiveness are been shown 接着介绍了复合高斯分布模型,在此模型基础上推导得到了三种自适应检测算法,通过使用仿真数据和ipix雷达实测海杂波数据加入目标信号对三种算法检测性能进行了仿真分析和比较,得到了相一致的结果,证明该算法的有效性。
For some low - resolution radar on active duty , we can only get the doppler cross image of the echo because of their low longitudinal resolution . therefore some analysis and algorithms for low - resolution radar are given and verified by measured data and simulation data results 对于现役的大量的低分辨雷达，由于纵向的低分辨率，所以只能对得到的回波数据进行横向的多普勒成像，为此本文对低分辨雷达的成像进行了系列的分析，提出了一些算法，并用实测数据和计算机仿真数据进行了验证。
Then , the definition of high order cumulants and the value of digital modulation signals ’ high order cumulants are presented . according to calculate the value of base band signals ’ high order cumulants , 4ask , 2fsk , 4fsk , bpsk , qpsk , 16qam can be distinguished . this method is demonstrated by simulation data and sampled data 接着,本文介绍了高阶累积量的定义和多种数字调制信号高阶累积量的值,通过计算基带信号的高阶累积量,可以对4ask 、 2fsk 、 4fsk 、 bpsk 、 qpsk 、 16qam六种信号进行分类,利用仿真信号和实际采样信号对该方法进行了论证,该方法可以在低信噪比条件下实施。
In the end , quick implementation of kasumi , f8 and f9 are simulated under the condition of windows 98 with celeron 633 and 128m memory , the simulation data show that the f8 algorithm is capable of achieving the encryption rate up to 1 . 9mbit / s , while f9 algorithm only takes 20ms to compute the mac with the length of 5114 bits , both of which can reach the basica requirement of 3g 在本文的最后我们对kasumi ， f8算法和f9算法的快速实现进行了具体的仿真， f8算法的具体实现是在windows98 ，赛扬633mhz和128m内存的环境下其加密速率可以达到1 . 9mbps ，而f9算法在同样的条件下计算5114比特的字符串的消息认证码所需时间仅为20毫秒，这些速率基本上可以满足3g中高速率传输的要求。
This thesis presents the time domain character and frequency domain character of common used signals , including digital modulation signals and analogue modulation signals . the first method is to extract feature parameters from time domain and frequency domain . it can distinguish 2ask , 4ask , 2fsk , 4fsk , bpsk , qpsk , 16qam , 64qam and it is demonstrated by simulation data and sampled data 本文介绍了常用的通信信号(包括模拟调制样式和数字调制样式)的时域、频域特征,首先从时频域提取信号的特征参数,用于区分2ask 、 4ask 、 2fsk 、 4fsk 、 bpsk 、 qpsk 、 16qam 、 64qam这8种信号,用仿真信号和实际采样信号验证了该方法的可行性。
