一种适合于动态建模的信号参数模型

A Signal Parameter Model Applicable for Building up Dynamic Model

本文利用复指数模型作为瞬态信号的表示形式;系统的动态参数模型可由系统的输入与输出信号之间的关系建立;对实际窄带滤波器的阶跃响应的建模,表明了复指数信号模型是一种很有效的瞬态信号表示方法,只需截取很短的一段瞬态过渡信号,就可以得到信号参数的估计,系统模型的频域,时域回归效果较好.

A complex-exponential model is utilized to represent the transient signals. So,it is convenient to build up dynamic parameter-model of system via the system inputs and outputs. The model-building for actual narrow-band filter in terms of step response demonstrates that the complex-exponential model is an effecient representation of transient signals,as parameter estimation of signals can be obtained based on very short time segment severed from the transient response. Result also shows the reconstruction effectiveness of system model from frequency domain and time domain responses.