FFT_Model

提出了一种求解电磁场有限元 边界元混合法所生成的线性方程组的有效方法 ———内观 法结合多波前法.由于该线性方程组的系数是一个部分稀疏部分满填充的矩阵,为了加速求解,应用内观法将系数矩阵分为 2块,一块是有限元法形成的稀疏矩阵,另一块是边界元法生成的满阵,然后用多波前法求解稀疏矩阵方程,用高斯 约当消去法解满阵方程. 采用该方法,计算了二维多层介质柱体的雷达散射截面.计算结果表明,该方法的计算效率远远高于传统的高斯法.(Proposed for solving mixed finite element boundary element linear equations generated by an effective method of Vipassana--- a combination of multi wave front method. Since the coefficients of linear equations is a part of the sparsely populated part of the full matrix, in order to speed up the solution, application of Vipassana coefficient matrix is ​ ​ divided into two, one is the finite element method for the formation of the sparse matrix, the other is the boundary element method generates the full array, and then use the multifrontal method for solving sparse matrix equation Gauss Jordan elimination method with full matrix equation solution. use this method to calculate the two-dimensional multi-layer dielectric cylinder of the radar cross section. The results show the computational efficiency of this method is much higher than the traditional Gaussian law.)

详细讲述了直接序列扩频差分锁相环的文章，包含具体的算法结构，并附有仿真结果。(A novel differentially coherent delay-locked loop(DCDLL) for accurate code tracking is proposed for direct sequence spread spectrum systems. Due to the use of the differential decoder and exactly one correlator, the proposed scheme avoids the problems of gain imbalance. The tracking error variance is derived by linear analysis. When the proposed DCDLL scheme is applied in ranging with additive white Gaussian noise (AWGN) channel, the performance of the proposed DCDLL scheme is about 1.4 dB better than that of one-correlator tau–dither loop (TDL), and near that of noncoherent DLL.)

指派问题：里面包含有三个函数和一个主函数(Assignment problem: which contains the three functions and a main function)

CV 模型的matlab实现 的文章 详细阐述 了 怎样用matlab实现 CV模型程序(CV model matlab)

PROGRAM CALCULATES THE CHARACTERISTIC IMPEDANCE OF A MICROSTRIP LINE(USING THE FINITE DIFFERENCE METHOD THIS PROGRAM CALCULATES THE CHARACTERISTIC IMPEDANCE OF A MICROSTRIP LINE)

电力系统加权最小二乘法状态估计14节点或33节点都能运行(Weighted least square method for power system state estimation of 14 nodes or 33 nodes can run)

脉冲压缩雷达的优点是能获得大的作用距离和具有很高的距离分辨力。(The advantage of pulse compression radar is that it can obtain large range of action and have high distance resolution.)

利用Kaveh法估计ARMA过程功率谱，只需计算AR系数，简化过程。(Kaveh estimation using ARMA process of the power spectrum, simply calculating AR coefficients, to simplify the process.)

Matlab R14 brief introduction

读取一些特定的数据中的函数 简单！其他有待开发(Read some of the specific data in a simple function)