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butterworth
说明: 截止频率在0.3Hz的巴特沃斯低通滤波器,采用二阶级联进行编程。(In the 0.3Hz cutoff frequency of Butterworth low-pass filter, used to program the second class together.)
- 2008-11-10 10:09:43下载
- 积分:1
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motion3
基于混合高斯模型的多目标跟踪算法,对背景图像建立混合高斯模型,实时更新高斯模型,达到更新背景的目的。(Gaussian mixture model-based multi-target tracking algorithm, Gaussian mixture model to establish the background image, real-time updates Gaussian model, to achieve the purpose of updating the background.)
- 2011-05-24 17:24:39下载
- 积分:1
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VSS_yuzhao
一种新型的滑膜控制结构,欢迎提出修改意见。(A new control structure synovial welcome propose amendments.)
- 2014-08-06 20:00:24下载
- 积分:1
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RD
说明: SAR成像的算法很多,以上文件为简单易懂的条带SAE成像RD算法。忽略距离徙动和距离弯曲的影响。(Many SAR imaging algorithm , the above file with SAE imaging RD algorithm is simple and easy to understand article . Ignore the range migration and distance bending .
)
- 2012-09-03 18:26:51下载
- 积分:1
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MATLABhanshusuchashouce
MATLAB函数速查手册,详细的介绍了matlab使用的各种函数的用法,方便大家查找。(MATLAB Function Quick Reference, a detailed description of the matlab functions using a variety of usage, we find convenient.)
- 2010-12-10 21:16:57下载
- 积分:1
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GAcode
利用遗传算法求解带约束的优化问题,可以直接运行,修改目标函数即可(Solving constrained optimization problems by genetic algorithm)
- 2019-01-19 15:08:30下载
- 积分:1
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Jacobi
雅戈比迭代法,用于数值分析课,正确,提供简单的参考!(Jacobi iterative method )
- 2009-05-08 00:28:43下载
- 积分:1
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sd
说明: sphereandML是主程序,性能接近最大似然ML检测,调用了spheredecode和spheredecodeinf两个子程序;(ml sd )
- 2010-05-16 19:54:12下载
- 积分:1
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MasterThesisPdf
virginia tech EE内部DATABASE 的一篇关于MIMO-OFDM的论文,写的很不错,评分是A+(virginia tech EE internal DATABASE an MIMO-OFDM on the papers, written in a very good score is A+)
- 2007-08-22 10:45:48下载
- 积分:1
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03607_28
DFT进行频谱分析时的三种现象
1、混叠:对连续信号采样,要求连续信号是带限的,采样频率要足够高。Fs应满足Nyquist采样定理才不产生混叠。
采样前加低通滤波器防混叠
2、频谱泄漏:DFT对时域信号进行了截断(相当于采样信号乘了一个窗函数),时域的乘积相当于频域卷积,改变了原信号频谱。
改用其他窗函数(非矩形)改善泄漏。
3、栅栏现象:DFT 只给出了频谱在采样点上的取值,采样点间的频谱内容丢失。(DFT spectrum analysis of a three phenomena, aliasing : continuous signal sampling, requiring continuous signal is band-limited, the sampling frequency should be high enough. Fs meet the Nyquist Sampling Theorem would not have aliasing. Sampling former low-pass filter plus anti-aliasing 2, spectrum leakage : DFT right time domain signal a disconnect (equivalent to a sampling signal by a window function). time domain is equivalent to the product of frequency-domain convolution, changes in the spectrum of the original signal. Window functions to switch to other (non-rectangular) to improve leakage. 3, fenced phenomenon : DFT spectrum is given only at the sampling point value, sampling points of the spectrum as lost.)
- 2007-05-08 16:22:17下载
- 积分:1