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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Williamson, D. Agathoklis, P. Musumeci, P. |
| Copyright Year | 1988 |
| Description | Author affiliation: Dept. of Syst. Eng., Australian Nat. Univ., Canberra, ACT, Australia (Williamson, D.) |
| Abstract | The authors develop a one-dimensional discrete-time model for wave propagation in an inhomogeneous layered medium of finite length. The problem of acoustic inversion requires the computation of the acoustic impedance as a function of travel time from knowledge only of boundary excitation and measurement. A discrete state-space ARMA model is developed whose parameters are an explicit function of the boundary conditions of the finite-length medium and sampled values of the inhomogeneous acoustic layered impedance profile. The inversion problem is formulated in the framework of a recursive-least-squares predictive error method in which good initial parameter estimates are derived from transient data. Examples are included showing identification from transient reflected data subject to measurement noise and undersampling.< |
| Starting Page | 1892 |
| Ending Page | 1896 |
| File Size | 356601 |
| Page Count | 5 |
| File Format | |
| DOI | 10.1109/CDC.1988.194657 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1988-12-07 |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Boundary conditions Acoustic measurements State-space methods Partial differential equations Impedance measurement Recursive estimation Control systems Systems engineering and theory Laboratories Acoustic propagation |
| Content Type | Text |
| Resource Type | Article |
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