Application of Nonuniform Beam Filling (NUBF) Doppler Velocity Error Correction on Airborne Radar Measurements

Nonuniform beam filling (NUBF) within an atmospheric radar sampling volume can cause significant Doppler velocity errors when the radar is located on a fast-moving platform. A case of strong NUBF errors was identified in ER-2 X-band Radar (EXRAD) data from the Investigation of Microphysics and Preci...

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Veröffentlicht in:	IEEE geoscience and remote sensing letters 2022, Vol.19, p.1-5
Hauptverfasser:	Walker McLinden, Matthew L., Loftus, Adrian M., Li, Lihua, Heymsfield, Gerald M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Airborne radar Airborne remote sensing Airborne sensing Clouds Doppler effect Doppler radar Doppler sonar Doppler velocity Error analysis Error correction Errors Microphysics nonuniform beam filling (NUBF) Radar Radar antennas Radar data Radar equipment Radar measurement Radar reflectivity radar reflectivity gradient Reflectance Snowstorms Spaceborne radar Superhigh frequencies Velocity Velocity errors
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Zusammenfassung:	Nonuniform beam filling (NUBF) within an atmospheric radar sampling volume can cause significant Doppler velocity errors when the radar is located on a fast-moving platform. A case of strong NUBF errors was identified in ER-2 X-band Radar (EXRAD) data from the Investigation of Microphysics and Precipitation for Atlantic Coast-Threatening Snowstorms (IMPACTS) 2020 field campaign. A basic NUBF correction was employed using an estimate of the along-track radar reflectivity gradient. The relationship is verified empirically using colocated Doppler velocity measurements from the higher resolution cloud radar system (CRS).
ISSN:	1545-598X 1558-0571
DOI:	10.1109/LGRS.2021.3120647