【摘要】 以信号处理理论和放射性统计学为基础 ,研究了判断限的选择方法。通过对 X射线荧光谱的研究 ,合理地选择了标记物特征信号和本底噪音的计算方法 ,在此基础上 ,通过大量实验 ,提出并选择了复合型的信噪比判断限更多还原

【Abstract】 Based on the Signal Detection Theory (SDT) and the statistics principle, the choice method of judgement baseline was studied. According to the characteristics of X Ray Fluorescence(XRF) spectra in our on line detection system, the calculation methods for the characteristic peak of the element tagged and background were carried out. The complex judgement baseline were rationally selected after a lot of experiments and analyzing. The operating results of near one year show that it is available.更多还原