Robust Linear Depolarization Ratio Estimation for Dual-Polarization Weather Radar
Linear depolarization ratio (LDR) is often difficult to measure in low and moderate signal-to-noise ratio conditions because the cross-polar echo power is typically two to three orders of magnitude weaker than the copolar echo power. For radars operating at attenuating frequencies such as X-, Ku-, a...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Beauchamp, Robert M [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2016 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: IEEE transactions on geoscience and remote sensing - New York, NY : IEEE, 1964, 54(2016), 3, Seite 1462-1474 |
|---|---|
| Übergeordnetes Werk: |
volume:54 ; year:2016 ; number:3 ; pages:1462-1474 |
| Links: |
|---|
| DOI / URN: |
10.1109/TGRS.2015.2481185 |
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OLC1973721228 |
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| 520 | |a Linear depolarization ratio (LDR) is often difficult to measure in low and moderate signal-to-noise ratio conditions because the cross-polar echo power is typically two to three orders of magnitude weaker than the copolar echo power. For radars operating at attenuating frequencies such as X-, Ku-, and Ka-bands, differential attenuation must be accounted for to accurately estimate the LDR. A method for robust estimation of the LDR is introduced and evaluated that addresses both of these issues. In practice, the "enhanced" LDR offers robust LDR estimation over current estimation methods. The enhanced LDR is insensitive to noise, radar calibration error, and path-integrated attenuation. The proposed estimator is experimentally validated using Ku-band observations from the National Aeronautics and Space Administration dual-frequency dual-polarization Doppler radar (D3R). | ||
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| 700 | 1 | |a Chandrasekar, V |4 oth | |
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Beauchamp, Robert M |
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10.1109/TGRS.2015.2481185 |
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620 550 |
| title_sort |
robust linear depolarization ratio estimation for dual-polarization weather radar |
| title_auth |
Robust Linear Depolarization Ratio Estimation for Dual-Polarization Weather Radar |
| abstract |
Linear depolarization ratio (LDR) is often difficult to measure in low and moderate signal-to-noise ratio conditions because the cross-polar echo power is typically two to three orders of magnitude weaker than the copolar echo power. For radars operating at attenuating frequencies such as X-, Ku-, and Ka-bands, differential attenuation must be accounted for to accurately estimate the LDR. A method for robust estimation of the LDR is introduced and evaluated that addresses both of these issues. In practice, the "enhanced" LDR offers robust LDR estimation over current estimation methods. The enhanced LDR is insensitive to noise, radar calibration error, and path-integrated attenuation. The proposed estimator is experimentally validated using Ku-band observations from the National Aeronautics and Space Administration dual-frequency dual-polarization Doppler radar (D3R). |
| abstractGer |
Linear depolarization ratio (LDR) is often difficult to measure in low and moderate signal-to-noise ratio conditions because the cross-polar echo power is typically two to three orders of magnitude weaker than the copolar echo power. For radars operating at attenuating frequencies such as X-, Ku-, and Ka-bands, differential attenuation must be accounted for to accurately estimate the LDR. A method for robust estimation of the LDR is introduced and evaluated that addresses both of these issues. In practice, the "enhanced" LDR offers robust LDR estimation over current estimation methods. The enhanced LDR is insensitive to noise, radar calibration error, and path-integrated attenuation. The proposed estimator is experimentally validated using Ku-band observations from the National Aeronautics and Space Administration dual-frequency dual-polarization Doppler radar (D3R). |
| abstract_unstemmed |
Linear depolarization ratio (LDR) is often difficult to measure in low and moderate signal-to-noise ratio conditions because the cross-polar echo power is typically two to three orders of magnitude weaker than the copolar echo power. For radars operating at attenuating frequencies such as X-, Ku-, and Ka-bands, differential attenuation must be accounted for to accurately estimate the LDR. A method for robust estimation of the LDR is introduced and evaluated that addresses both of these issues. In practice, the "enhanced" LDR offers robust LDR estimation over current estimation methods. The enhanced LDR is insensitive to noise, radar calibration error, and path-integrated attenuation. The proposed estimator is experimentally validated using Ku-band observations from the National Aeronautics and Space Administration dual-frequency dual-polarization Doppler radar (D3R). |
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| container_issue |
3 |
| title_short |
Robust Linear Depolarization Ratio Estimation for Dual-Polarization Weather Radar |
| url |
http://dx.doi.org/10.1109/TGRS.2015.2481185 http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7299635 |
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false |
| author2 |
Chandrasekar, V |
| author2Str |
Chandrasekar, V |
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| doi_str |
10.1109/TGRS.2015.2481185 |
| up_date |
2024-07-04T03:00:46.523Z |
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