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remember
很好很实用的信号处理程序。适合学习和科研参考使用。(Very good very useful signal processing. Suitable for learning and scientific research use and reference.)
- 2008-06-25 11:27:08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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FiniteElementAnalysis-(Abaqus)
这是一本关于大型有限元模拟软件ABAQUS的英语书籍，从入门介绍到应用实例，还可以学习英文。如果你需要你一定会喜欢的。(English contents: 1. Introduction 2.Bar Element 3.Beam Element 4.Rigid Jointed Frames 5.Stress and Strain Analysis 6.Weighted Residual Methods 7.Finite Element Approximation 8.Numerical Integration 9.Plane Problems 10.Axisymmetric Problems 11.Thin and Thick Plates )
- 2014-10-31 15:13:39下载
- 积分：1
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fft_基2基4基8
说明： 基2基4基8以及分裂基的fft算法，代码效率很高。是难得一见的好代码。应用范围很广。(Radix-2-4-based 8 and split fft-based algorithm, a high code efficiency. Is a rare good code. Application of a very wide scope.)
- 2021-02-20 13:59:43下载
- 积分：1
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SQP序列二次规划算法小程序
说明： 用于求解数值算法最优化算法中的SQP算法(Solve SQP algorithm Numerical algorithm optimization algorithm)
- 2020-07-24 21:03:47下载
- 积分：1
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qiyizhi
奇异值能量差分谱计算，可用于信号降噪处理(Singular value of the energy difference spectrum calculation can be used for signal noise reduction)
- 2021-03-21 14:29:16下载
- 积分：1
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FOLY
基于预估校算法的分数阶混沌系统的Lyapunvo指数计算程序(Lyapunvo exponent calculation program for fractional order chaotic systems based on predictor algorithm)
- 2021-04-14 10:38:55下载
- 积分：1
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ansydualiefenxi
ANSYS水压试验疲劳apdl，对学习apdl的人有很打帮助(ANSYS the hydrostatic test fatigue apdl, learning apdl there are playing to help)
- 2012-11-21 11:13:44下载
- 积分：1
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ScienceDirect_files_04Dec2020_09-38-45.837
说明： 求解齿轮的热弹流润滑问题，本程序中说明了每个子程序的用途，而且带注释。(To solve the thermal elastohydrodynamic lubrication problem of gears, the purpose of each subroutine is explained in this program, and there are comments.)
- 2020-12-07 22:20:02下载
- 积分：1
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Gaussin-Curve-Fitting-with-C
采用最小二乘方法的高斯曲线拟合算法， 用C 语言编写. 包含子程序.(Gaussian Curving Fitting with C language)
- 2021-04-14 18:18:55下载
- 积分：1
