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about the signal processing,especially the fourier transform

捷联惯导随机漂移白噪声计算matlab仿真程序，包含数据(SINS random drift of white noise matlab simulation program, contains data)

Photonic crystals are attractive optical materials for controlling and manipulating the flow of light. One dimensional photonic crystals are already in widespread use in the form of thin-film optics with applications ranging from low and high reflection coatings on lenses and mirrors to colour changing paints and inks. Higher dimensional photonic crystals are of great interest for both fundamental and applied research, and the two dimensional ones are beginning to find commercial applications. The first commercial products involving two-dimensionally periodic photonic crystals are already available in the form of photonic-crystal fibers, which use a microscale structure to confine light with radically different characteristics compared to conventional optical fiber for applications in nonlinear devices and guiding exotic wavelengths. The three-dimensional counterparts are still far from commercialization but may offer additional features such as optical nonlinearity require

Matpower4.1：潮流计算与最优潮流(Matpower: flow calculation and optimal power flow)

说明：  对萨德系统AN/TPY-2雷达的威力范围进行仿真计算。原创！！(The power range of SAD AN/TPY-2 radar is simulated. Original!!)

说明：  元胞自动机交叉路口交通仿真，有信号和无信号都可以，统计(Cellular automata intersection traffic simulation, both with and without signals, statistics)

一个师兄的毕设，单径或多径瑞利衰落信道仿真，基于人工神经网络的常用数字信号调制。( A complete set of brothers, Single path or multipath Rayleigh fading channel simulation, The commonly used digital signal modulation based on artificial neural network.)

说明：  可以分析NMEA0183格式中的GGA数据的静态精度（rms）(Can analyze the static accuracy (rms) of GGA data in NMEA0183 format)

极大似然估计法定位，对于TDOA测距时进行的定位，简单源代码，有锚节点存在的节点自定位(Maximum likelihood estimate for localization)

matlab 的拟牛顿方法，减少计算导数带来的计算量的一种迭代方法，用来计算非线性问题。(matlab quasi-Newton methods to reduce the computational calculation of the amount of the derivative of an iterative method to calculate the nonlinear problem.)