A Methodology for Calibrating the Pointing Angles of an Airborne Doppler Radar

Joseph W. Sapp, Zorana Jelenak, Paul S. Chang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The Imaging Wind and Rain Airborne Profiler (IWRAP) is a system of two airborne Doppler radars, operating at C- and Ku-band, that observe below the aircraft. Each radar transmits two conically-scanned pencil beams at approximately 30° and 50° Earth-incidence angle. The antennas make a complete rotation once every second and sample at approximately 30m range gates. Since the 2021 hurricane season, the Ocean Surface Winds Team (OSWT) at NOAA/NESDIS/STAR have been retrieving and transmitting three-dimensional atmospheric wind vectors to the ground for near-real-time use. Small biases in the horizontal wind speed and direction were observed first in the downwind legs of the hurricane flight pattern. After more investigation, these errors were apparent throughout all storms as a function of aircraft drift angle. This paper describes a methodology the OSWT use for eliminating these drift-dependent errors.

Original languageEnglish
Title of host publicationIGARSS 2024 - 2024 IEEE International Geoscience and Remote Sensing Symposium, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages6546-6549
Number of pages4
ISBN (Electronic)9798350360325
DOIs
StatePublished - 2024
Event2024 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2024 - Athens, Greece
Duration: Jul 7 2024Jul 12 2024

Publication series

NameInternational Geoscience and Remote Sensing Symposium (IGARSS)

Conference

Conference2024 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2024
Country/TerritoryGreece
CityAthens
Period07/7/2407/12/24

Keywords

  • Doppler radar
  • calibration
  • radar measurements
  • radar remote sensing

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