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power-method
用幂法反幂法求解方阵的最大最小特征值及其特征向量，C语言程序，基本的数值计算算法(power method and inverse power method)
- 2011-11-24 20:09:25下载
- 积分：1
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high-resolution-one-dimension
高分辨率要求系统具有大的带宽，瞬时带宽的增加必将提高系统对硬件的要求，本文采用方便灵活的步进频率波形信号。脉间频率步进波形通过子脉冲载频的步进变化来获得大的有效带宽，使成像具有高分辨率，采用加窗和补零方法提高信噪比，但该信号对目标径向速度非常敏感。采用补零方法提高距离取样分辨率，使距离像细化，并用公式说明了补零只能提高距离取样分辨率，并不能改变频率步进信号的距离分辨能力。该信号波形对目标径向速度的敏感，使目标能量分散到邻近的距离单元造成距离分辨率下降，如果不事先进行速度补偿，直接对回波信号进行逆傅立叶变换，将使所成一维距离像发生频谱展宽，并伴有距离像发生平移。本文证明了当目标有径向速度时仍采用对回波信号直接进行逆傅立叶变换的方法将使一维距离像发生频谱展宽并伴有距离像发生频移，从而严重影响了一维距离像的质量。(high-resolution requirements of the system with large bandwidth, the increased instantaneous bandwidth will improve the system of hardware, In this paper, a flexible and convenient step frequency signals. Pulse frequency step-pulse waveform through the carrier frequency step to achieve great changes in the effective bandwidth. make imaging with high resolution, increasing the window and fill methods to improve signal-to-noise ratio is, However, the signal on the target radial velocity is very sensitive. Using zero-distance sampling method to improve resolution, so that distance as refinement, and formulates a zero-distance sampling can improve resolution, does not alter the frequency of the signal from stepping resolution capabilities. The signal waveform on the target radial velocity sens)
- 2007-04-07 22:15:33下载
- 积分：1
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Test for KNN
说明： 基于欧拉距离的KNN分类器，可自行调节map和预测点的位置。运行时首先显示分布散点图，之后输出预测值(Here is a KNN classifier based on Euler distance with self-adjusting map and prediction point positions. The distribution scatter will plot displayed map at first, then show the predicted value.)
- 2020-05-29 09:29:12下载
- 积分：1
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OOPFEM
面向对象的有限元程序设计
——空间8结点等参元的分析计算(Object-oriented finite element program design- space 8 node isoparametric element analysis calculation)
- 2009-03-02 18:47:05下载
- 积分：1
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Gauss
无网格伽辽金法中用到的数值积分，此程序，提供多点高斯积分，可任意选择！(element-free Galerkin method used in the numerical integration of this process, provide more Gaussian integral, can be arbitrary choice.)
- 2007-07-08 10:11:41下载
- 积分：1
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two kinds of vortex beam
两种涡旋光束的线性强度、强度密度和三维立体图，改变拓扑荷可以改变强度分布。(two kinds of vortex beam)
- 2018-08-17 21:31:36下载
- 积分：1
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RLFWD01
经过修改杨成林的《瑞雷波勘探》附录得到的瑞雷面波一维频散曲线(Yang Chenglin modified Rayleigh wave of " Rayleigh wave exploration in" Appendix obtain one-dimensional dispersion curves)
- 2020-09-13 09:47:59下载
- 积分：1
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powerflow33
33节点配电网前退回代法潮流计算程序。可以计算功率损耗，是至今为止比较完善的程序(33-node distribution network return on behalf of the flow calculation procedures. Can calculate the power loss, so far a relatively complete program)
- 2021-04-22 10:58:48下载
- 积分：1
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pso
粒子群算法，也称粒子群优化算法或鸟群觅食算法（Particle Swarm Optimization），缩写为 PSO。它具有精度高，收敛快等优点，广泛用于系统辨识、函数优化等领域。文件pso.m是粒子群算法辨识程序，在此基础上，需要自行编写目标函数计算程序以实现不同系统的参数辨识。(Particle swarm optimization (PSO), also known as particle swarm optimization algorithm or bird swarm foraging algorithm (Particle Swarm Optimization), abbreviated as PSO. It has the advantages of high precision and fast convergence. It is widely used in system identification, function optimization and other fields. The document pso.m is a particle swarm algorithm identification program. On this basis, it is necessary to write an object function calculation program to realize the parameter identification of different systems.)
- 2017-09-29 12:52:29下载
- 积分：1
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riemann solver
精确黎曼求解器；
精确黎曼求解器：hll、hllc方法；(Accurate Riemann solver;
Accurate Riemann Solver: HLL, HLLC method;)
- 2021-04-21 01:48:51下载
- 积分：1
