fd2d_3.2

说明：  2008年4月网工真题.doc 对各位考生有很大的帮助，希望各位考上(April 2008 Network Engineering 真题. Doc candidates of you very helpful, hope you admitted to)

工程界几何模型参数化用到的NURBS曲线生成的理论和相关源代码。可用以翼型参数化、船舶外形参数化等(the theory of NURBS curve generation and the related source code for Engineering of geometric model parameterization . Airfoil parameterization and ship shape parameterization can be used )

说明：  matlab高效编程程序源代码第十一章，可以运行。(efficient programming source code matlab Chapter XI, you can run.)

C语言与MATLAB接口+编程与实例+李传军+编著，实现MATLAB中的C程序(C language and MATLAB interface+ programming instance+ Appellation+ compiled C program in MATLAB)

图1为均衡带限信号所引起失真的横向或格型自适应均衡器(其中横向FIR系统长M=11), 系统输入是取值为±1的随机序列，其均值为零；参考信号；信道具有脉冲响应： 式中用来控制信道的幅度失真(W = 2～4, 如取W = 2.9,3.1,3.3,3.5等)，且信道受到均值为零、方差(相当于信噪比为30dB)的高斯白噪声的干扰。试比较基于下列几种算法的自适应均衡器在不同信道失真、不同噪声干扰下的收敛情况(对应于每一种情况,在同一坐标下画出其学习曲线): 1）横向/格-梯型结构LMS算法 2）横向/格-梯型结构RLS算法 并分析其结果。(Figure 1 is a band-limited signal caused balanced horizontal or lattice distortion adaptive equalizer (FIR system in which the lateral length M = 11), the system input is the value of a random sequence of ± 1, mean zero reference signal channel has impulse response: Wherein the amplitude of the distortion for the control channel (W = 2 ~ 4, and so as to take W = 2.9,3.1,3.3,3.5), and subjected to a channel with zero mean and variance (equivalent SNR is 30dB) Gaussian white noise. Compare the following types of algorithm-based adaptive equalizer in a different channel distortion, the convergence of different noise interference (corresponding to each situation, draw their learning curve in the same coordinate): 1) landscape/grid- LMS algorithm ladder structure 2) landscape/grid- RLS algorithm ladder structure And analyze the results.)

09系分习题与解答，适合系统分析人员的学习资料和技术文档(Exercises and answers to sub-09 system is suitable for systematic analysis of the learning materials and technical documentation)

几个BOC 信号的分析例程，全球卫星导航系统将普遍使用BOC调制信号作为扩频测距信号，BOC信号号自相关函数呈现多个相关峰，传统扩频接收机所用的延迟锁定环（DLL）无法对该信号正确地进行码相位的 (Several BOC signal analysis routines, the global satellite navigation system will generally use the BOC modulation signal as a spread spectrum ranging signal, BOC signal autocorrelation function presents multiple correlation peaks, the traditional spread spectrum receiver with the delay locked loop (DLL ) can not be the signal code phase)

利用基尔霍夫（KA）驻留相位近似求解粗糙面散射系数(Use the Kirchhoff (KA) stationary phase approximation solution of rough surface scattering coefficient)

Markov Chain Monte Carlo and gibbs sampling

Integer Square Root with Remainder