chengfa

使用基于知识的方法把多种复杂的信息进行融合，利用web语义技术，数据融合系统等多种方法进行信息融合(The use of knowledge-based approach to a variety of complex information integration, the use of semantic web technology, data fusion system, a variety of methods of information fusion)

使用matlab语言编程解决图与网格问题(Using matlab language programming to solve diagram and grid problem )

DESCRIPTION: This Matlab algorithm performs many tasks associated with power system analysis. First, it has the ability to perform both fully coupled and dc power flow analysis. Second, it has the ability to create measurements (with user-defined error) to be used as input for state estimation. Third, it has the ability to perform state estimation - allowing the user to examine how the placement of measurement devices as well as magnitude of distibution of measurement error affect the discrepency between power flow and state estimation results. In essence, it provides the user with a complete package for the study of both power flow and state estimation in n-bus power systems.

ADC动态性能测试，包括FFT法，正弦拟合法，直方图法，还可以测试通道之间一致性(ADC test of dynamic performance,including FFT method,sine fit method,hist method etc.)

图像的基于8*8分块的DCT变换编码 MATLAB编程环境 (Images based on 8* 8 block of DCT transform coding MATLAB programming environment)

图像的平面微分平方和能够反映图像高频分 量的能量。用计算平面微分平方和的方法在空间域上计算相邻像素亮度差值的平方和，对应于在频率域上计算图像高频分量的能量和，此值越大，图像对焦越准确(Differential square image plane and the image can reflect the energy of high frequency. Computational method of Planar Differential squares calculated in the space domain to the square of the difference between the brightness of adjacent pixels and corresponds to the image in the frequency domain calculation of high frequency energy and, this value is larger, the more accurate the image focus)

Dijkstra最短路算法通用Matlab程序(Dijkstra)

说明：  LogMAP译码算法,可用于递归卷积编码和非递归卷积编码的译码，代码质量高，供参考(<1> Log MAP decoder for RSC and NSC convolutional codes <2> Based on Lalit Bahl s original BCJR algorithm and its logarithmic version (Hanzo & Woodard). <3> Test-bench code is also included.)

微气象学中使用EC观测资料计算湍流通量的matlab程序(EC observational data used in the micro-meteorology matlab program to calculate the turbulent fluxes of)

通过 matlab 编程实现捷联惯导系统初始对准、惯导解算的全过程。 1）初始自对准：利用前10分钟实验车静止的数据进行惯导系统的自对准。采用前2分钟数据进行解析粗对准，后8分钟数据用五状态Kalman滤波器实现精对准；为了验证精对准性能，可在粗对准结果上把航向角人为加一定幅度（如10度）的误差，观察精对准的收敛性能。 2）纯惯导解算：对准结束后转入纯惯性导航解算，要求进行双子样的圆锥和划摇补偿，即每20ms完成一次导航解算，输出完整的导航结果包括三个姿态、两个水平速度和两个水平位置（天向通道发散不必输出），并给出姿态、速度、位置随时间的变化曲线以及位置误差曲线。(The whole process of initial alignment and inertial navigation solution of strapdown inertial navigation system is realized by matlab programming.)