aac

attached file contain two algorithm for classification.K_means and K Nearest Neiborhood. and related m_filles in matlab

图像harris角点检测matlab源代码，使用说明(images harris corner detection Matlab source code, use)

OFDM的Matlab仿真源代码，简单易懂，适合初学者迅速上手(OFDM Matlab simulation source code, easy to understand for beginners to get started quickly)

本程序主要用于当存在信号不匹配时，产生阵列增益。(This routine is to produce the Array Gain, when there is signal mismatch.)

说明：  遗传算法，分为个7个子函数：分别为编码、解码、选择、交叉、变异、目标函数和总调用。有详细的注释。(Genetic algorithm, into a seven sub-functions: respectively, encoding, decoding, selection, crossover and mutation, the objective function and the total calls. There are detailed notes.)

提出了一种新的宽带DOA估计方法:频域子空间正交性测试方法(TOFS:Test of orthogonality of frequency sub- space)。该方法通过同时测试频域信号共同带宽内各频段噪声子空间与阵列流形之间的正交性来进行DOA估计。与宽带相干信号子空间方法不同,TOFS方法不需要任何初始值的预估及聚焦操作。与宽带非相干信号子空间方法也不同,TOFS方法同时测试各频段噪声子空间与阵列流形之间的正交性。本文仿真了TOFS与IMUSIC、CSSM、TOPS的性能比较。仿真结果表明TOFS方法在中等信噪比以上时有较好的性能,且避免了TOPS方法中常出现的伪峰。 (Proposed a new broadband DOA estimation methods: subspace orthogonal frequency domain test methods (TOFS: Test of orthogonality of frequency sub-space). The method by simultaneously testing the frequency domain signal bandwidth of each band noise common sub-orthogonality between space and the array manifold to be DOA estimates. And broadband coherent signal subspace different methods, TOFS method does not require any initial estimate and focusing operation values. And broadband incoherent signal subspace methods are different, TOFS method for simultaneous testing of each band orthogonal noise subspace and the array manifold between. This paper compares the performance TOFS simulation and IMUSIC, CSSM, TOPS is. Simulation results show that the method TOFS better performance when more moderate SNR and spurious peaks TOPS method avoids the often occur.)

说明：  matlab实现霍夫曼编码，计算编码效率并分析结果(matlab huffman code)

模拟混沌与分岔理论，根据沙粒间的相互关系，模拟沙堆崩塌的过程(Analog chaos and bifurcation theory, based on the relationship between sand to simulate the process of sand collapse)

IEEE标准测试系统数据 14节点数据 30节点数据 57节点数据 包括数据和潮流计算结果(IEEE stand system data 14 stations 30 stations 57 stations)

matlab code for qpsk