Abstract

In recent years, the contributions of microwave remote sensing to hurricane numerical forecasting have increased significantly, particularly with the Stepped Frequency Microwave Radiometer, SFMR, measurements of wind speed and rain rate. The Hurricane Imaging Radiometer, HIRad, is a new instrument concept that improves on the SFMR by imaging surface wind speed and rain rate over a ± 45 deg. swath. It is compatible with high altitude jet aircraft and unpiloted aerial vehicles, and has potential for space- borne use. This paper provides a brief description of the HIRad concept, the status of the HIRad microstrip patch array technology, and a review of a physically based radiative transfer model developed for HIRad modeling and simulations.

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