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Zbuild
该程序用于形成节点阻抗矩阵，按程序要求格式输入线路数据linedata，Zbuild（linedata）形成节点阻抗矩阵(The procedures used for the formation of the node impedance matrix format input line data linedata procedural requirements of Zbuild (linedata) node impedance matrix)
- 2021-01-22 16:08:39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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常微分方程数值解法
常微分方程数值解法，又是一个数值分析的常用算法(Numerical Solution of ordinary differential equations, numerical analysis is a common algorithm)
- 2005-01-31 22:13:30下载
- 积分：1
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project
多项式的加减法运算，输入的多项式带有未知数x和数字(Polynomial addition and subtraction calculations)
- 2021-04-28 10:28:44下载
- 积分：1
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fpa
code for methuristic algorithm flower pollination algorithm
- 2017-05-20 00:21:23下载
- 积分：1
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ems
用于处理电力系统中含有4个节点的随机潮流计算(Four nodes to deal with the random flow calculation)
- 2009-06-16 09:43:28下载
- 积分：1
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ground-wave-
计算地波传输衰减的程序,可以设置高度，大气条件等(Ground wave transmission attenuation calculation program, you can set the height, atmospheric conditions, etc.)
- 2020-06-29 21:20:02下载
- 积分：1
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aladdin1.0.tar
有限元分析源代码，能分析梁单元、膜单元、壳体单元等常用的有限元单元，并能计算模态、振型等(Finite element analysis of source code, capable of analyzing beam element, membrane element, shell element, such as commonly used finite element module, and the calculation mode, vibration mode, etc.)
- 2008-02-27 20:11:03下载
- 积分：1
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perf_plas_J2
说明： 通过MATLAB编程模拟理想弹塑性应力应变曲线(Simulating the stress-strain curve for perfect plasticity by MATLAB coding.)
- 2020-12-10 01:59:19下载
- 积分：1
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FFT
利用FFT估计正弦信号的频率,要估计一个叠加了高斯白噪声的正弦信号 的频率 ，可以通过对x(n)做傅里叶变换，得到频谱图，找出幅度的最大值对应的频率值 ，进行多次变换，求出均方误差 。改变信噪比SNR，通过仿真可以得出随着信噪比增加，均方误差减小。(Sinusoidal signal using FFT frequency estimation, to estimate a Gaussian white noise superimposed on the frequency of sinusoidal signals, can be achieved by x (n) be the Fourier transform to get spectrum to identify the magnitude of the frequency value corresponding to the maximum , several transformations, find the mean square error. Change the signal to noise ratio SNR, the simulation can be drawn as the SNR increases, the mean square error decreases.)
- 2011-04-26 10:53:04下载
- 积分：1
