Strategy and implementation of resolve overlapping spectra based on curve fitting |
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Authors: | HU Yao gai ZHANG Xiao xing ZHAO Zheng yu FENG Bo |
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Affiliation: | College of Electronic Information, Wuhan University, Wuhan 430079, P.R.China;Key Laboratory of High Voltage and Electrical New Technology, Ministry of Education, Chongqing University, Chongqing 400044, P.R.China;College of Electronic Information, Wuhan University, Wuhan 430079, P.R.China;Key Laboratory of High Voltage and Electrical New Technology, Ministry of Education, Chongqing University, Chongqing 400044, P.R.China |
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Abstract: | Aming at the overlapping peaks in spectrum analysis, a novel method of curve fitting based on Gaussian function is presented to resolve the overlapping peaks. The theory of curve fitting is introduced firstly, and then an algorithm is proposed based on both the minimum separable peak peak interval and the curve fitting error. In the peak positioning, a gradually strict strategy is introduced to exclude the fake peaks. The resolution of several kinds of overlapping peaks with computer simulated noise has been performed and discussed in details. The calculated results indicate that the peak positions can be extracted effectively, even in the case of serious overlapped, and clearly show the effectiveness of the proposed method. |
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Keywords: | overlapping peaks curve fitting resolving Gaussian distribution |
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