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修改中
说明： SFR_1.4.2 12233源代码，可以在vs2017编译(SFR 12233 source code)
- 2021-04-19 11:38:54下载
- 积分：1
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程序
说明： 数模中求解偏微分方程时，在已知数据的基础上进行线性插值拟合。利用差分法求解该模型，先用网格划分区域，对 区域内部节点做泰勒展开。对偏导数进行离散化处理。(tthe solution to the PDE problem in mathematical modeling)
- 2019-06-22 18:21:45下载
- 积分：1
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DVHop
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.)
- 2020-09-20 21:57:53下载
- 积分：1
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Flash蜂窝状图片展示
Flash蜂窝状图片展示，左侧的小圆点可控制显示大图片，创意挺不错，图片切换的时候有动画效果。
- 2022-09-23 16:20:02下载
- 积分：1
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lab kmin
rgb2lab空间，然后提取各颜色分量，用k值分割，很好的达到了区分效果。(The rgb2lab space is then extracted from each color component and segmented by K value.)
- 2018-08-19 09:47:25下载
- 积分：1
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PC之间通信应用程序
用Labview控制两台电脑通过以太网进行通信，两台电脑都可以进行发送和接收()
- 2018-04-11 08:07:47下载
- 积分：1
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yangshishuangfengganshe
一个杨氏双孔成像干涉模拟，仅供光学爱好者学习干涉成像(A Young)
- 2008-05-15 11:51:42下载
- 积分：1
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直插式电阻电容封装与尺寸图解(20190725092446)
说明： 直插式电阻电容封装与尺寸图解(20190725092446)(Direct-plug Resistance Capacitor Packaging and Dimension Diagram (20190725092446))
- 2020-06-15 22:22:59下载
- 积分：1
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matlab实验代码
用matlab实现的点、线特征提取，和基于灰度的特征匹配(Some small functions implemented with matlab)
- 2018-06-27 15:44:05下载
- 积分：1
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3D Ray Tracing
radio wave tracing matlab program
- 2020-09-20 19:07:51下载
- 积分：1
