Partial Forward-Backward Averaging for Enhanced Frequency Estimation of Real X-texture Modes
(2005) In IEEE Transactions on Signal Processing 53(7). p.2550-2562- Abstract
- In this paper, enhancement of the signal root estimation of a particular kind of real-valued two-dimensional (2-D) sinusoidal modes is considered. To its constitution, each mode corresponds to the superposition of two real-valued plane waves in a particular symmetry. The concept of partial forward-backward averaging, which is applicable for modes that are undamped in at least one dimension, is introduced as a means for improving the signal subspace estimate from which the signal roots are estimated. The consequences of real-valued signals for the signal root estimates are discussed in detail, and it is shown that by applying partial forward-backward averaging, the mean square errors of the estimates, and the breakdown threshold... (More)
- In this paper, enhancement of the signal root estimation of a particular kind of real-valued two-dimensional (2-D) sinusoidal modes is considered. To its constitution, each mode corresponds to the superposition of two real-valued plane waves in a particular symmetry. The concept of partial forward-backward averaging, which is applicable for modes that are undamped in at least one dimension, is introduced as a means for improving the signal subspace estimate from which the signal roots are estimated. The consequences of real-valued signals for the signal root estimates are discussed in detail, and it is shown that by applying partial forward-backward averaging, the mean square errors of the estimates, and the breakdown threshold signal-to-noise ratio (SNR), are significantly reduced, compared with forward-only or conventional forward-backward (when applicable) usage of the sampled signals. The practical implication is highlighted by applying the proposed technique to modal analysis of multichannel impact responses from a tree trunk. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/627364
- author
- Axmon, Joakim LU ; Sandsten, Maria LU and Sörnmo, Leif LU
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- subject
- in
- IEEE Transactions on Signal Processing
- volume
- 53
- issue
- 7
- pages
- 2550 - 2562
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- wos:000230216800026
- scopus:23844438272
- ISSN
- 1053-587X
- DOI
- 10.1109/TSP.2005.849199
- language
- English
- LU publication?
- yes
- id
- f92478bf-f304-4700-b999-7928c1754994 (old id 627364)
- date added to LUP
- 2016-04-01 16:43:01
- date last changed
- 2022-01-28 21:39:27
@article{f92478bf-f304-4700-b999-7928c1754994, abstract = {{In this paper, enhancement of the signal root estimation of a particular kind of real-valued two-dimensional (2-D) sinusoidal modes is considered. To its constitution, each mode corresponds to the superposition of two real-valued plane waves in a particular symmetry. The concept of partial forward-backward averaging, which is applicable for modes that are undamped in at least one dimension, is introduced as a means for improving the signal subspace estimate from which the signal roots are estimated. The consequences of real-valued signals for the signal root estimates are discussed in detail, and it is shown that by applying partial forward-backward averaging, the mean square errors of the estimates, and the breakdown threshold signal-to-noise ratio (SNR), are significantly reduced, compared with forward-only or conventional forward-backward (when applicable) usage of the sampled signals. The practical implication is highlighted by applying the proposed technique to modal analysis of multichannel impact responses from a tree trunk.}}, author = {{Axmon, Joakim and Sandsten, Maria and Sörnmo, Leif}}, issn = {{1053-587X}}, language = {{eng}}, number = {{7}}, pages = {{2550--2562}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, series = {{IEEE Transactions on Signal Processing}}, title = {{Partial Forward-Backward Averaging for Enhanced Frequency Estimation of Real X-texture Modes}}, url = {{http://dx.doi.org/10.1109/TSP.2005.849199}}, doi = {{10.1109/TSP.2005.849199}}, volume = {{53}}, year = {{2005}}, }