First, the purpose of the experiment 1. master the principle and programming method of DFT spectrum analysis. 2. understand the programming idea of FFT algorithm. 2. skillfully using FFT to make spectrum analysis of signals, including correctly selecting parameters and drawing spectrum And the spectrum reading. 3. the fast convolution and the periodic detection of sunspot are carried out by FFT spectrum analysis. Two. Experimental environment 1.Windows XP operating system 2. install MATLAB2007a software

Filename	Size	Update
实验3	0	2016-12-02
实验3\DFT.m	507	2016-12-02
实验3\DIT.m	1056	2016-12-02
实验3\fftjuanji.m	525	2016-12-02
实验3\pufenxi.asv	798	2016-12-02
实验3\pufenxi.m	798	2016-12-02
实验3\taiyangheizi.m	790	2016-12-02
实验3\实验三 DFT和FFT频谱分析.doc	107008	2016-12-02

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