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频谱分析仪是信号处理研究领域必不可少的工具。现有的基于快速傅利叶变换的频
谱分析仪能对线性的平稳的信号进行有效分析，但难以分析出非线性非平稳信号的瞬时频率
能量变化情况。针对此问题，本文设计了基于希尔伯特黄变换的频谱分析仪，能够对非平稳
信号进行有效分析。所设计系统以DE2-FPGA开发板为硬件平台，结合了NiosII的软核处
理器加以实现，可对采集的外部信号进行希尔伯特黄变换，得到信号的时间-频率-能量三维
谱，并可在VGA上实时显示出来。系统测试结果表明，所设计频谱分析仪
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matlab wavelet analysis program, Machine learning routines, Nonlinear discrete system identification.
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Course designed to prepare the matlab program code, MIT Artificial Intelligence Laboratory identification of the target source, Nonlinear discrete system identification.
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Use serial programming examples matlab GUI implementation, Suppressed carrier type differential phase modulation, Nonlinear discrete system identification.
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Independent component analysis algorithm reduces the raw data noise, Nonlinear discrete system identification, Course designed to prepare the matlab program code.
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Including orbital maneuvering simulation, initial orbit calculation, Nonlinear discrete system identification, Calculation multifractal detrended fluctuation analysis matlab program.
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By matlab code, Including stochastic gradient algorithm, the relative gradient algorithm, Nonlinear discrete system identification.
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