PSO_optization_UC

矩不变分割，分割效果明显，在Matlab下完美实现(Moment-segmentation, segmentation obviously perfect realization in Matlab)

换能器阵元的不同排列组合决定其指向性，波束形成是多波束测量的关键技术。文中 通过数学计算总结了不同换能器阵进行波束形成的工作原理，并介绍了利用二维DFT进行频 域波束形成的一般方法。最后结合现役多波束测深系统，简单解释说明不同系统所采用的波束 形成技术。(Transducer using an array of different permutations and combinations to determine its directivity, beam formation is the key technology for multi-beam measurements. Summarized by mathematical calculations the transducer array beamforming works, and describes the general method of two-dimensional DFT in the frequency domain beam formation. Finally, the active-duty multi-beam sounding system, the simple explanation of the different systems used in beamforming technology.)

Matlab Image Processing Part 3

谱元法（sem)学习程序之一，用于对各类波场的模拟计算(Spectral element method (sem) to learn one of the procedures for various types of wave field simulation)

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Hu7不变矩 (hu7 moment invariant )

多边形网格相交区域搜索,MATLAB源程序，含有若干示例(Polygon mesh intersection area search, MATLAB source, contains a number of examples)

2PSK的调制解调过程的仿真及在不同信道下误码率仿真分析(2PSK modem emulation and simulation of BER)

calculate mel frequency of a signal

matlab,关于扑克牌识别的matlab程序，很不错(matlab, on identification cards matlab procedures, very good)