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Calibration and Image Reconstruction for the Hurricane Imaging Radiometer (HIRAD)The Hurricane Imaging Radiometer (HIRAD) is a new airborne passive microwave synthetic aperture radiometer designed to provide wide swath images of ocean surface wind speed under heavy precipitation and, in particular, in tropical cyclones. It operates at 4, 5, 6 and 6.6 GHz and uses interferometric signal processing to synthesize a pushbroom imager in software from a low profile planar antenna with no mechanical scanning. HIRAD participated in NASA s Genesis and Rapid Intensification Processes (GRIP) mission during Fall 2010 as its first science field campaign. HIRAD produced images of upwelling brightness temperature over a aprox 70 km swath width with approx 3 km spatial resolution. From this, ocean surface wind speed and column averaged atmospheric liquid water content can be retrieved across the swath. The calibration and image reconstruction algorithms that were used to verify HIRAD functional performance during and immediately after GRIP were only preliminary and used a number of simplifying assumptions and approximations about the instrument design and performance. The development and performance of a more detailed and complete set of algorithms are reported here.
Document ID
20120014941
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Ruf, Christopher (Michigan Univ. Ann Arbor, MI, United States)
Roberts, J. Brent (NASA Marshall Space Flight Center Huntsville, AL, United States)
Biswas, Sayak (University of Central Florida Orlando, FL, United States)
James, Mark W. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Miller, Timothy (NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 26, 2013
Publication Date
July 22, 2012
Subject Category
Instrumentation And Photography
Report/Patent Number
M12-1543
Meeting Information
Meeting: 32nd Annual International Geoscience & Remote Sensing Symposium (IGARSS)
Location: Munich
Country: Germany
Start Date: July 22, 2012
End Date: July 27, 2012
Sponsors: Institute of Electrical and Electronics Engineers
Distribution Limits
Public
Copyright
Public Use Permitted.

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