Poles identification of an analog filter for nuclear spectroscopy via subspace-based techniques

In this paper, a method for the identification of the poles-zeros position of an analog amplifier for nuclear spectroscopy is presented. The proposed technique is based upon a subspace-based system state-space identification (4SID) method, which is well suited to a data set constituted by a noisy me asurement of the impulse response of the circuit. The 4SID method is comple mented with a preprocessing technique of the data, which improves the accur acy of the estimation. The identification method is tested both on simulate d and real data sets.