CAJ | 학술논문

介绍了一种用于数字化多道脉冲幅度分析（ DMCA）中的基线估计算法。该算法针对核脉冲信号尾部衰减很慢的特点，首先对核脉冲信号死时间内的信号作直线替代预处理，以减小核脉冲信号尾部对基线估计的影响，然后用补偿最小二乘法对预处理后的信号进行拟合，从而估计出基线。仿真结果表明，本文算法估计出的基线平滑稳定，能够很好的逼近真实基线。通过与常规算法估计结果的均方误差作对比，得出本文算法具有更高的基线估计精度。
개소료일충용우수자화다도맥충폭도분석（ DMCA）중적기선고계산법。해산법침대핵맥충신호미부쇠감흔만적특점，수선대핵맥충신호사시간내적신호작직선체대예처리，이감소핵맥충신호미부대기선고계적영향，연후용보상최소이승법대예처리후적신호진행의합，종이고계출기선。방진결과표명，본문산법고계출적기선평활은정，능구흔호적핍근진실기선。통과여상규산법고계결과적균방오차작대비，득출본문산법구유경고적기선고계정도。
This paper introduces a baseline estimation algorithm applied in Digital Multi -Channel Analyzer (DMCA).As the tail of nuclear pulse signal decays rather slowly , firstly, we replace the dead time period of nuclear signal with a straight line to reduce the influence of signal 's tail on baseline estimation .Secondly , the preprocessed signal is fitted with Penalized Least Squares method and then the estimated baseline is obtained . Simulation results show that the estimated baseline obtained by the proposed algorithm is smooth and stable , and it approaches the real baseline very well .Through its MSE comparison with the general algorithm , the proposed algorithm has better accuracy performance in baseline estimation .