一种频率源噪声频谱拟合方法的研究A Study of Fitting Method for Frequency Source Noise Power Spectrum
李孝辉,张慧君,边玉敬
摘要(Abstract):
在分析频率源的噪声特性的时候,经常需要由Allan方差或功率谱计算频率源的五种噪声强度系数的值,通常采用人工分析的方法,求出噪声系数,这严重阻碍了自动化处理的应用。给出的一种自动拟合算法可以满足这方面的需要。在最小均方误差意义下,这种算法能自动完成对噪声类别的判定、噪声区间的划分以及噪声系数确定,所有这些无须人工参予。最后,对模拟数据和实测的几种频率源的功率谱曲线进行拟合,实验研究的结果表明这种方法拟合的相对误差不超过11%。
关键词(KeyWords): 拟合;频率源;噪声
基金项目(Foundation):
作者(Author): 李孝辉,张慧君,边玉敬
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参考文献(References):
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