Imaging interferometric data of the Hawaiian Islands were acquired in October 1997 in conjunction with a test flight sponsored by NASA's Environmental Research Aircraft & Sensor Technology (ERAST) program. A specially designed Digital Array Scanned Interferometer (DASI) operated from the Pathfinder, a high-altitude remotely piloted aircraft (RPA). The DASI, which originated at Washington University and was jointly developed with Ames Research Center, will meet the stringent engineering and operating requirements of the RPA with respect to remote operation, very light weight, and low volume, power and bandwidth.In-flight characterization of DASI performance was supported by simultaneous ground-based measurement of atmospheric aerosols with a sunphotometer, and measurement of surface albedo with a spectroradiometer. Reduction of DASI data to at-sensor radiance units is proceeding.
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Pathfinder RPA
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DASI sensor
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Related Topic: Centurion solar-powered aircraft
Summary of 11/10/98 Test Flight
Photos of 11/10/98 Test Flight
Hangar Photo 10/98
For more information about the DASI instrument, please contact:
Stephen Dunagan
Ecosystem Science & Technology Branch
MS242-4
NASA Ames Research Center
Moffett Field CA 94035-1000
415/604-4560
sdunagan@mail.arc.nasa.gov
For more information about the ERAST/Hawaii Science effort, please contact:
David Peterson
Ecosystem Science & Technology Branch
MS242-4
NASA Ames Research Center
Moffett Field CA 94035-1000
415/604-5899
dpeterson@mail.arc.nasa.gov
or
Lee Johnson
Ecosystem Science & Technology Branch
MS242-4
NASA Ames Research Center
Moffett Field CA 94035-1000
415/604-3331
ljohnson@mail.arc.nasa.gov
Last Update 12 November 1998
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