prospect

Ripple counter using t _filp flop

针对基于双曲线定位的DV-Hop算法中误差项的异方差性引起的定位误差大的问题，提出了一种基于加权双曲线定位的DV-Hop改进算法。算法分析了基于双曲线定位的DV-Hop算法模型中误差项的异方差性，用加权最小二乘法对异方差性进行纠正，对加权最小二乘法中的权值矩阵进行了推导并得到与跳数相关的最佳权值矩阵，使得误差项满足同方差性，所得估计值更加接近最佳线性无偏估计。仿真实验结果表明，所提算法在节点定位精度上较现有的基于双曲线定位的DV-Hop算法都有一定提高。(Aiming at the problem that the heteroscedasticity of observation errors leads to low locating accuracy in DV-Hop algorithm based on hyperbolic positioning, this paper proposes an improved DV-Hop algorithm which based on weighted hyperbolic positioning. The algorithm analysis the heteroscedasticity of the error term in the model and takes advantage of weighted least square method which corrects heteroscedasticity straightforwardly. Then, the weight matrix related to least hops between nodes is deduced, the estimators thus obtained are more close to the best linear unbiased estimator. The simulation results show that the location performance of the improved algorithm is better than that of the exsiting DV-Hop algorithm which based on hyperbolic positioning.)

水下无人航行器，惯性导航，2维轨迹发生程序(The inertial navigation system in the Underwater Unmanned Vehicle, including the 2 dimensional path generator.)

这是vb编写的计算器的源代码，比较容易懂，比较实用(This is the preparation of the calculator vb source code, it was relatively easy to understand, more practical)

此书包含线性规划单纯形方法、对偶理论、灵敏度分析、运输问题、内点算法、非线性规划K-T条件、无约束最优化方法、整数规划和动态规划等。(This book includes linear programming, simplex method, duality theory, sensitivity analysis, transportation problem, interior point algorithm, nonlinear programming K-T condition, unconstrained optimization method, integer programming and dynamic programming.)

一个可以自由转换进制的计算器 八，十，十六，随意转换(a free conversion of 229 calculators 8, 10, 16, the casual change)

说明：  用 AD9910实现的DDS 线性调频信号,调试已通过 可以使用(DDS LFM signal realized by ad9910 has passed debugging and can be used)

搜索时，可以多个选择文件，右键添加到下载列表(When you search, you can choose multiple files and add the right-click to the download list.)

matlab阶次分析，实用代码,包括数据、脉冲提取、等角度计算、傅里叶变换和阶次提取。(matlab order analy,Including data, pulse extraction, equal angle calculation, Fourier transform and order extraction)

AN IDEA BASED ON HONEY BEE SWARM FOR NUMERICAL OPTIMIZATION