Analysis of Chirp Signal with FractionalOrder Savitzky-Golay Digital Differentiator
Analysis of Chirp Signal with FractionalOrder Savitzky-Golay Digital Differentiator
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发表时间：
2014
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通讯作者：
A. K. Dubey;Sudhir Kumar
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作者：
A. K. Dubey;Sudhir Kumar
利用分数阶Savitzky-Golay数字微分器（FOSGDD）方法，对线性调频信号进行了分析研究。本文进一步用于提高线性调频信号的性能。该方法首先利用多项式最小二乘法和Riemann-Liouville方法计算滑动窗口系数。然后利用这些系数对正弦信号和线性调频信号的分数阶导数进行估计。本文的工作表明，该算法的均方根误差（RMSE）和计算时间都有很大的改善，可以有效地计算无噪声信号和有噪声Chirp信号的分数阶导数
This paper presents analytical study of chirp signal, by taking into consideration the method of Fractional Order Savitzky-Golay Digital Differentiator (FOSGDD). This paper is further used to enhance the performance of the chirp signal. In this method first, moving window coefficients using polynomial least square method and Riemann-Liouville, method is computed. Then the coefficients are used to estimate fractional order derivative of sinusoidal signal and chirp signal. The work proposed in the paper demonstrates that the, Root Mean Square Error (RMSE) and computation time is greatly improved and it can efficiently calculate the fractional order derivative of the noise free signal and noisy chirp signal