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pingjun
本程序是基于matlab编程,用于求解平均值,具有快捷高效的特点。(This procedure is based on the MATLAB programming, for solving the average value, has the characteristics of fast and efficient.)
- 2013-09-16 22:14:35下载
- 积分:1
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kalman
卡尔曼滤波器模型及程序,一次作业做的,还可以希望对大家有帮助(Kalman filter model and procedures, once the job done, you can also hope to help everyone)
- 2012-01-03 21:51:59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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i_t_2int
current in buck cover.
- 2013-11-05 05:34:23下载
- 积分:1
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segy
读取和写入segy地震文件,用matlab可以运行(Read and write files segy earthquake)
- 2013-12-04 11:28:44下载
- 积分:1
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levelnet
水准网平差MATLAB程序,适合于闭合、附和、支导线(MATLAB standard network adjustment procedures, suitable for closure, they endorse, support wires)
- 2008-04-26 18:47:15下载
- 积分:1
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indirect-adjustment-calculation
基于matlab的简单间接导线平差计算代码。(Calculated based on simple indirect Traverse matlab code.)
- 2013-03-04 14:55:42下载
- 积分:1
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egao
一个关机恶搞程序,仅供娱乐,其实很简单就用了system函数(A spoof shutdown procedures, for entertainment purposes only, is actually very simple to use system functions)
- 2013-11-13 07:11:43下载
- 积分:1
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sanjiaobo
三角波的频谱研究matlab程序,可以画出三角波,并根据性质来改变得到希望的波形(The triangle wave spectrum matlab program, you can draw the triangle wave and waveform hope to change based on the nature)
- 2013-04-12 23:27:18下载
- 积分:1
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can-xem
mo hinh matlab turbine gio
- 2015-03-29 21:21:54下载
- 积分:1