【摘要】 本文介绍了数字化谱仪系统中,由前放和成形滤波器组成的模拟系统极点数字化识别算法,基于这种算法在Matlab及Simulink平台上对数字化谱仪系统进行了模拟,特别对数字滤波部分进行了建模仿真。主要分析了噪声、鬼零点(ghost zero)、时间常数等因素对算法的影响,讨论了算法在实际中的应用。这种算法基于Hankel矩阵的奇异值分解,具有精确、实时运行、数值稳定、无需初始化等特点,因此具有广泛的应用价值。更多还原

【Abstract】 This paper presents a digital method for the poles identification of an analog system consisting of a preamplifier and a shaping filter in the digital spectroscopy.Based on this method,the result of the simulation of the analog and digital system is modeled in the Matlab and Simulink platform.The influence of noise,the "ghost zero" and some realization problem is also discussed.The algorithm is based on SVD of the Hankel.With the advantage of accuracy,operating in real-time,numerical stability and requiring no initialization,the method is widely used.更多还原