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| Paper: | SPTM-L4.5 |
| Session: | Stationary Signals and Spectral Analysis |
| Time: | Wednesday, May 19, 14:20 - 14:40 |
| Presentation: |
Lecture |
| Topic: |
Signal Processing Theory and Methods: Stationary Signals & Spectrum Analysis |
| Title: |
CONSISTENCY ANALYSIS OF A FREQUENCY DOMAIN SUBSPACE ALGORITHM FOR MULTI-COMPONENT HARMONIC RETRIEVAL |
| Authors: |
Joakim Gunnarsson; Chalmers University of Technology | | |
| | Tomas McKelvey; Chalmers University of Technology | | |
| Abstract: |
A new frequency domain algorithm for multi-component harmonic retrieval has been developed recently. The method is based on using Discrete Fourier Transform (DFT) data and enables the user to select frequency sub-bands within which the frequencies of the harmonics of interest are known to reside. The technique provides a very good attenuation of colored noise and other disturbances residing outside the frequency band of interest. This paper presents a consistency analysis of the subspace based estimation algorithm. The analysis provides sufficient conditions for consistency of the sinusoidal frequency estimates in terms of required number of DFT data. A small numerical example is also presented comparing the new approach with the well known ESPRIT method. The result clearly indicates that the method has a large potential. |
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