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PolyFractionValu
本程序提供大量实用多项式计算函数：求一维实(复)多项式值、求一维多项式组值、求二维实(复)多项式值、两一维多项式相乘、两一维多项式除法、计算连分式函数值。(look it yourself.)
- 2021-02-19 10:19:44下载
- 积分：1
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FFT
fft变换后求出主频，FFT transform to calculate frequency
- 2013-06-08 21:49:58下载
- 积分：1
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LGKT4
四阶龙格库塔法解一阶二元微分方程 应用于数值计算(Fourth-order Runge-Kutta method for solving a class of binary differential equations for numerical calculation)
- 2010-06-29 11:55:57下载
- 积分：1
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tsvd
截断奇异值分解技术是一种正则化方法，用于不适定问题的数值计算(Truncated Singular Value Decomposition is a regularizaiton method for ill-conditioned problem computation.)
- 2020-08-13 23:18:26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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paper1007
利用样本协方差矩阵特征值分解实现双通道SAR动目标检测.pdf(Dual Channels SAR Ground Moving Target Detection with
Eigen-decomposition of the Sample Covariance Matrix)
- 2012-07-29 13:21:49下载
- 积分：1
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Mani
流形学习程序，Isomap，LLE，LTSA，etc，非线性数据降维(manifold learning, Isomap, LLE, LTSA, etc, nonlinear data dimensionality reduction)
- 2009-04-02 09:44:24下载
- 积分：1
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PlateOfElasticStatic
二维弹性力学边界元程序中调试中的问题，有助于初学者从中发现问题，学习编写程序(Plate of Elastic Static)
- 2011-06-09 11:23:08下载
- 积分：1
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svdpackc.tar
求矩阵奇异分解svd算法，共计4种实现方式，(for SVD matrix decomposition algorithm, for a total of four kinds of achievement,)
- 2005-07-06 10:56:02下载
- 积分：1
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lid-driven-flow
用MRT-LBM计算顶盖驱动流的程序，比LBGK方法更加稳定。(Codes for lid-driven flow with MRT-LBM, which is more stable than LBGK.)
- 2021-04-07 01:59:02下载
- 积分：1
