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| Titel |
The next generation airborne polarimetric Doppler weather radar |
| VerfasserIn |
J. Vivekanandan, W.-C. Lee, E. Loew, J. L. Salazar, V. Grubišić, J. Moore, P. Tsai |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
2193-0856
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Instrumentation, Methods and Data Systems ; 3, no. 2 ; Nr. 3, no. 2 (2014-07-21), S.111-126 |
| Datensatznummer |
250115216
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| Publikation (Nr.) |
 copernicus.org/gi-3-111-2014.pdf |
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| Zusammenfassung |
| Results from airborne field deployments emphasized the need to obtain concurrently high temporal
and spatial resolution measurements of 3-D winds and microphysics. A phased array radar on an
airborne platform using dual-polarization antenna has the potential for retrieving high-resolution, collocated 3-D winds and microphysical measurements. Recently, ground-based phased
array radar (PAR) has demonstrated the high time-resolution estimation of accurate Doppler velocity
and reflectivity of precipitation and clouds when compared to mechanically scanning radar. PAR
uses the electronic scanning (e-scan) to rapidly collect radar measurements. Since an airborne
radar has a limited amount of time to collect measurements over a specified sample volume, the
e-scan will significantly enhance temporal and spatial resolution of airborne radar
observations. At present, airborne weather radars use mechanical scans, and they are not designed
for collecting dual-polarization measurements to remotely estimate microphysics. This paper
presents a possible configuration of a novel airborne phased array radar (APAR) to be installed on
an aircraft for retrieving improved dynamical and microphysical scientific products. The proposed
APAR would replace the aging, X-band Electra Doppler radar (ELDORA). The ELDORA X-band radar's
penetration into precipitation is limited by attenuation. Since attenuation at C-band is lower
than at X-band, the design specification of a C-band airborne phased array radar (APAR) and its
measurement accuracies are presented. Preliminary design specifications suggest the proposed APAR
will meet or exceed ELDORA's current sensitivity, spatial resolution and Doppler measurement
accuracies of ELDORA and it will also acquire dual-polarization measurements. |
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