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Frequency Domain Accuracy of Identified 2-D Causal Models
Linköpings universitet, Institutionen för systemteknik, Reglerteknik. Linköpings universitet, Tekniska högskolan.
1989 (engelsk)Inngår i: Proceedings of the 1989 International Conference on Acoustics, Speech and Signal Processing, 1989, s. 2294-2297Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

A study is made of parametric estimation of 2-D transfer functions using the least-squares method which is the dominant method for causal systems. The analysis concentrates on the frequency-domain accuracy of the estimated models. There exist results for the accuracy of the parameter estimates. The parameters are asymptotically Gaussian distributed. The variance of the polynomial in the frequency domain can be expressed using these results for the parameters. This, however, gives no insight into the dependence on the true transfer function. An illuminating result is obtained if the model order tends to infinity. The limiting results show good correspondence with Monte-Carlo simulations for small data sets obtained with low model orders.

sted, utgiver, år, opplag, sider
1989. s. 2294-2297
Emneord [en]
Filtering and prediction theory, Identification, Least squares approximations, Spectral analysis
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-100584DOI: 10.1109/ICASSP.1989.266924OAI: oai:DiVA.org:liu-100584DiVA, id: diva2:663120
Konferanse
1989 International Conference on Acoustics, Speech and Signal Processing, 23-26 May, 1989, Glasgow, United Kingdom
Tilgjengelig fra: 2013-11-09 Laget: 2013-11-09 Sist oppdatert: 2014-02-06

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