| EPSRC Reference: |
GR/K99787/02 |
| Title: |
ROBUST CUMULANT ESTIMATOR AND ITS APPLICATION TO NON-DESTRUCTIVE TESTING USING ULTRASONIC SIGNALS |
| Principal Investigator: |
Nandi, Professor A |
| Other Investigators: |
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| Project Partners: |
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| Department: |
Electrical Engineering and Electronics |
| Organisation: |
University of Liverpool |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 January 1999 |
Ends: |
31 December 1999 |
Value (£): |
54,118
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| EPSRC Research Topic Classifications: |
| Digital Signal Processing |
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| EPSRC Industrial Sector Classifications: |
| No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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Algorithms based on the higher order statistics are being developed for many areas of signal processing. The large variability of the estimates of higher order cumulants remains a problem. The primary objective is to develop a new cumulant estimator. For third order cumulants an adaptive generalised trimmed mean estimator that truncates a different number of samples from the left and the right depending on the asymmetry and tail length appears to be a superior estimator to the arithmetic mean. As the asymmetry and the tail length of the distribution referring to the second order and fourth order cumulants would span a larger region of the asymmetry-tail length plane compared to that of third order cumulants, further investigations are required. This will allow the choice of either obtaining reduced variance cumulant estimates from the same data or using less samples to compute similar variance cumulant estimates with advantages in stationary and nonstationary problems.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.liv.ac.uk |