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说明：  文件夹中内容为《MATLAB7.x数字信号处理》书中实例源代码，代码说明参见该文件夹下的“程序说明.doc”文件。(The contents of the folder as &quot MATLAB7.x digital signal processing,&quot the book source code examples, code instructions see the folder under the &quot description of the procedures. Doc&quot file.)

Particle swarm optimization algorithm ( 粒子群优化算法)

异步电动机状态方程模型，使用matlab S函数(asynchronis machine state equation model, using matlab S-function)

program finding of points

现需要在高度为600~700KM范围内，回归周期为30天的太阳同步轨道上布置一颗L波段的合成孔径雷达卫星。 1. 请设计合适的轨道参数，并仿真对应轨道下一个运行周期内星下点轨迹图（纬度和经度两个图）； 2. 计算多普勒中心频率，多普勒调频率与纬度的关系图（设姿态角为0°，天线视角20°~60°，推荐35°）； 3. 按高斯投影方式，将星下点轨迹图投影到地图坐标上。(Now requires a height of 600 ~ 700KM range, return period of 30 days are arranged on a sun-synchronous orbit L-band Synthetic Aperture Radar satellites. 1 Please design the appropriate orbital parameters and simulate the corresponding orbit within the next operating cycle nadir trajectories (latitude and longitude two graphs) 2. Calculate the Doppler center frequency, Doppler frequency and the relationship between latitude Figure (set attitude angle is 0, the antenna angle of 20 to 60, recommended 35) 3 Press Gauss projection, the nadir trajectories projected onto the map coordinates.)

matlab建模的百科全书，司守奎老师编著的(many useful knowledge about matlab )

WSN 三维定位的一个论文 讲的非常详细 可以对传感器网络发展和未来有一个了解(WSN three-dimensional positioning of a paper in a very detailed and the future development of sensor networks have a)

关于普朗克分布的详细讨论。（在mathematica环境下开发）(A detailed discussion of Planck distribution )

CDMA移动通信系统中一种速率功率联合控制方法(CDMA mobile communication system in a joint rate-power control method)

CMMB中PN序列的生成和强自相关特性在各种条件下的保持(The reasearch of PN sequences in CMMB, about its autocorrelation)