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fletter
计算颤振,使用非定长气动力的方法进行计算,准确可靠(Calculated flutter, the use of non-fixed-length aerodynamic calculation, accurate and reliable)
- 2012-11-13 16:13:27下载
- 积分:1
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mahalanobis
一种新的计算马氏距离的算法,算法采用二次协方差矩阵操作,进而使距离考加入相对性因素。(a new Mahalanobis distance calculation algorithm, the algorithm using quadratic covariance matrix operations, thereby enabling the relative distance to take factors.)
- 2006-09-30 23:22:22下载
- 积分:1
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BigNumber
大数类,重载了各类操作符,可以直接使用(fate categories, a variety of heavy-duty operator can be used directly)
- 2005-02-27 10:55:05下载
- 积分:1
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Fractional Fourier Transform
分数傅里叶变换和分数余弦变换,动态展示实部,虚部和模值(Computation of the Fractional Fourier Transform)
- 2019-04-26 17:22:14下载
- 积分:1
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mat
说明: 二分法求方程数值解,程序含说明性文字,精度可调(The numerical solution of the equation is obtained by dichotomy. The program contains explanatory text and the precision is adjustable)
- 2020-11-11 16:23:38下载
- 积分:1
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fft_base2
本程序用于实现快速傅里叶变换的快速算法
% 为代码简便所有*2操作均直接实现,实际应采用二进制左移实现
(This procedure used to realize fast Fourier transform fast algorithm of all the code is simple to operate* 2 are referred directly to realize the actual binary left should be used to achieve)
- 2008-05-17 10:59:43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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catch
用于求解线性方程组的追赶法!!!程序经过优化处理,运行速度快,且注释完全易于阅读,欢迎大家下载!!(Solving linear equations for the law to catch up! ! ! Optimized procedures to deal with, fast, and completely easy-to-read notes, welcome you to download! !)
- 2009-05-16 11:56:39下载
- 积分:1
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munfan
多姿态,多角度,有不同光照,在MATLAB中求图像纹理特征,抑制载波型差分相位调制。( Much posture, multi-angle, have different light, In the MATLAB image texture feature, Suppressed carrier type differential phase modulation.)
- 2017-02-26 22:48:41下载
- 积分:1
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fluid-1
说明: 气泡上浮实验,基于fluent的二维模型(Bubble Floating Experiment)
- 2019-03-28 21:16:57下载
- 积分:1