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xuanzhi
缴费点选址最优化模型代码,超强推荐,数学建模经典例子(Payment Point location optimization model code, super recommended classic example of mathematical modeling)
- 2011-05-14 23:25:53下载
- 积分:1
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zm
说明: 对图像进行均值化,并用均值化后的图进行数字全息的模拟,同时运用两种不同方法进行全息图的再现(The mean of the image and use the mean of digital holographic map after the simulation, while using two different methods of reproduction of the hologram)
- 2010-05-21 14:22:56下载
- 积分:1
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DeJong
说明: 程序是用C和Isight软件对DEJong测试函数进行计算。详情请见说明(Program is matlab and Isight software DEJong test function to calculate.)
- 2011-03-24 09:26:44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
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gcv_function
对广义交叉验证算法(GCV)的计算的辅助程序。(The generalized cross-validation algorithm (GCV) calculation of auxiliary programs.)
- 2021-03-31 22:49:08下载
- 积分:1
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hill
用Matlab编写的仿真无人机航迹规划,自主避障时所用的山形仿真(Using Matlab simulation UAV path planning, obstacle avoidance Yamagata emulation used)
- 2020-11-24 17:39:34下载
- 积分:1
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MATLAB
matlab的同步电机的仿真技术
可用于7.0以上(matlab simulation of synchronous motor technology can be used for more than 7.0)
- 2009-06-03 21:56:16下载
- 积分:1
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adv_bash_script_guide
Advanced Bash− Scripting Guide
An in− depth exploration of the gentle art of shell scripting
- 2014-08-29 05:13:55下载
- 积分:1
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12345
彩色数字水印的程序,实现在彩色图像中通过DCT变换来嵌入水印信息(Color digital watermarking process to achieve the color image by DCT transform to embed watermarks)
- 2010-11-26 16:49:28下载
- 积分:1
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MATLAB-financial
金融数量分析 有关均值方差分析还有收益率波动问题的代码(Financial quantity analysis The mean variance analysis and yields fluctuation of the code
)
- 2012-05-06 17:34:16下载
- 积分:1