Signal and background separation
Signal and background separation
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DOI：
10.1103/physreve.59.6527
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发表时间：
1999-06-01
影响因子：
2.4
通讯作者：
Prozesky, V
中科院分区：
文献类型：
--
作者：
von der Linden, W;Dose, V;Prozesky, V
在许多研究领域，测量到的光谱由一组位于未知背景之上的“峰”--寻找的信号--组成。光谱中背景的减去一直是许多研究的主题，已经开发出从滤波到拟合多项式函数的不同技术。这些技术产生的结果并不总是令人满意的，甚至经常具有误导性。基于概率论的规则，我们推导出了一种严格且自洽地将光谱的背景部分与信号部分分离的形式。我们将概率方法的结果与两种常用的粒子诱发X射线发射谱分析方法的结果进行了比较。[S1063-651X(99)10206-X]。
In many areas of research the measured spectra consist of a collection of ''peaks'' - the sought-for signals - which sit on top of an unknown background. The subtraction of the background in a spectrum has been the subject of many investigations and different techniques, varying from filtering to fitting polynomial functions, have been developed. These techniques yield results that are not always satisfactory and often even misleading. Based upon the rules of probability theory, we derive a formalism to separate the background from the signal part of a spectrum in a rigorous and self-consistent manner. We compare the results of the probabilistic approach to those obtained by two commonly used methods in an analysis of particle induced x-ray emission spectra. [S1063-651X(99)10206-X].