Title of Presentation: Status of the High-Altitude Imaging Wind and Rain Airborne Profiler (HIWRAP)

Primary (Corresponding) Author: Gerald Heymsfield

Organization of Primary Author: Goddard Space Flight Center

Co-Authors: James Carswell, Lihua Li, Dan Schaubert, Justin Creticos, Wayne Welch

Abstract: The focus of this paper is to provide a status of the HIWRAP instrument that is being developed under the NASA IIP. HIWRAP is a dual-frequency (Ka- and Ku-band), dual-beam (30 and 40 degree incidence angle), conical scan, solid-state transmitter-based system, designed for operation on the high-altitude (20 km) Global Hawk UAV. HIWRAP will be able to image winds through volume backscattering from clouds and precipitation, enabling it to measure the tropospheric winds above heavy rain at high-levels. HIWRAP utilizes a solid state transmitter along with novel pulse compression scheme that will result in a system that is considerably more compact in size, requires less power, and ultimately costs significantly less than typical radars currently in use for precipitation and Doppler wind measurements.