Title :
FDTD signal extrapolation using the forward-backward autoregressive (AR) model
Author :
Jandhyala, Vikram ; Michielssen, Eric ; Mittra, Raj
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA
fDate :
6/1/1994 12:00:00 AM
Abstract :
In this paper, the forward-backward autoregressive model is employed to extrapolate time domain signatures generated by the finite difference time domain algorithm with a view to speeding up the process of obtaining the frequency responses of EM systems. It is shown that the present method requires considerably lower-order predictors than those needed in other AR models, e.g, those based on Yule-Walker equations, and is therefore computationally efficient.<>
Keywords :
extrapolation; finite difference time-domain analysis; frequency response; signal processing; stochastic processes; time series; AR model; EM systems; FDTD signal extrapolation; finite difference time domain algorithm; forward-backward autoregressive model; frequency responses; time domain signatures; Autocorrelation; Computational modeling; Equations; Extrapolation; Finite difference methods; Frequency; Predictive models; Signal processing; Time domain analysis;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
