Abstract：For the digital X-ray fluorescence analyzer, the voltage of the instability baseline will directly affect the performance of the instrument, resulting in decreased energy resolution. In order to solve this problem, Kalman filtering algorithm was used for pulse signal baseline estimate in the digital X-ray fluorescence. Whether using the classic Kalman filter, or the simplified sage-husa, or the improved sage-husa, their baseline filtering effects were all poor. So, it is necessary to improve and optimize existing algorithms. The method of Double-Forgotten was put forward to establish a new model of adaptive Kalman filter algorithm based on the sage-husa. The experiment results show that a very good filtering effect was obtained using the mathematical model of the baseline filter. The algorithm solved the problem of filtering divergence, avoided slow convergence of baseline and realized the pulse baseline restoration, and improved the instrumental energy resolution.
王 敏，周建斌*，方 方，施泽明，周 伟，刘 易，曹建宇，朱 星 . X荧光分析仪中数字基线估计的研究 [J]. 光谱学与光谱分析, 2013, 33(01): 233-236.
WANG Min, ZHOU Jian-bin*, FANG Fang, SHI Ze-ming, ZHOU Wei, LIU Yi, CAO Jian-yu, ZHU Xing . The Study of Baseline Estimated in Digital XRF Analyzer . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(01): 233-236.
[1] XIAO Wu-yun, WEI Yi-xiang, AI Xian-yun(肖无云，魏义祥，艾宪芸). Nuclear Electronics & Detection Technology(核电子学与探测技术)，2005，25(6)：601. [2] Abbiati R， Gatti E，A Geraci，et al. Nuclear Instruments & Methods in Physics Research Research A，2005，548：507. [3] Geraci A，Rech I， Gatti E，et al. Nuclear Instruments & Methods in Physics Research Research A，2002，482：441. [4] Zhou J B, Zhou W, Lei J R. Nuclear Science and Techniques, 2012, 23(3): 150. [5] QIU Xiao-lin, FANG Guo-ming, DI Yu-ming, et al(邱晓林，方国明，第宇鸣，等). Atomic Energy Science and Technology(原子能科学技术)，2007，41(3)：375. [6] ZHANG Qian, JING Zhan-rong(张 谦，景占荣). Electronic Measurement Technology(电子测量技术)，2007，30(5)：18. [7] ZHOU Wei-jing, SHEN Huai-rong(周伟静，沈怀荣). Journal of the Academy of Equipment Command & Technology(装备指挥技术学院学报)，2009，20(5)：122. [8] WANG Xiao-xu, ZHAO Lin(王小旭，赵 琳). Journal of Astronautics(宇航学报)，2010，31(11)：2503. [9] LIU Jiang, CAI Bo-gen(刘 江，蔡伯根). Journal of Beijing Jiaotong University(北京交通大学学报)，2008，32(2)：88. [10] LIU Yan-zhi, ZHANG Jin-hua(刘演志，张金华). Modern Surveying and Mapping(现代测绘)，2009，32(4)：8.
