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| Titel |
Advanced intermittent clutter filtering for radar wind profiler: signal separation through a Gabor frame expansion and its statistics |
| VerfasserIn |
V. Lehmann, G. Teschke |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 26, no. 4 ; Nr. 26, no. 4 (2008-05-13), S.759-783 |
| Datensatznummer |
250016060
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| Publikation (Nr.) |
 copernicus.org/angeo-26-759-2008.pdf |
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| Zusammenfassung |
| A new signal processing method is presented for the suppression of intermittent clutter echoes in radar
wind profilers. This clutter type is a significant problem during the seasonal bird migration and often
results in large discrepancies between profiler wind measurements and independent reference data. The
technique presented makes use of a discrete Gabor frame expansion of the coherently averaged time series
data in combination with a statistical filtering approach to exploit the different signal
characteristics between signal and clutter. The rationale of this algorithm is outlined and the
mathematical methods used are presented in due detail. A first test using data obtained with an
operational 482 MHz wind profiler indicates that the method outperforms the previously used clutter
suppression algorithm. |
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