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The Characterization of a DIRSIG Simulation Environment to Support the Inter-Calibration of Spaceborne SensorsClimate change studies require long-term, continuous records that extend beyond the lifetime, and the temporal resolution, of a single remote sensing satellite sensor. The inter-calibration of spaceborne sensors is therefore desired to provide spatially, spectrally, and temporally homogeneous datasets. The Digital Imaging and Remote Sensing Image Generation (DIRSIG) tool is a first principle-based synthetic image generation model that has the potential to characterize the parameters that impact the accuracy of the inter-calibration of spaceborne sensors. To demonstrate the potential utility of the model, we compare the radiance observed in real image data to the radiance observed in simulated image from DIRSIG. In the present work, a synthetic landscape of the Algodones Sand Dunes System is created. The terrain is facetized using a 2-meter digital elevation model generated from NASA Goddard's LiDAR, Hyperspectral, and Thermal (G-LiHT) imager. The material spectra are assigned using hyperspectral measurements of sand collected from the Algodones Sand Dunes System. Lastly, the bidirectional reflectance distribution function (BRDF) properties are assigned to the modeled terrain using the Moderate Resolution Imaging Spectroradiometer (MODIS) BRDF product in conjunction with DIRSIG's Ross-Li capability. The results of this work indicate that DIRSIG is in good agreement with real image data. The potential sources of residual error are identified and the possibilities for future work are discussed..
Document ID
20170003261
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
External Source(s)
Authors
Ambeau, Brittany L.
(Rochester Inst. of Tech. Rochester, NY, United States)
Gerace, Aaron D.
(Rochester Inst. of Tech. Rochester, NY, United States)
Montanaro, Matthew
(Rochester Inst. of Tech. Rochester, NY, United States)
McCorkel, Joel
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
April 7, 2017
Publication Date
September 19, 2016
Publication Information
Publication: SPIE Proceedings
Publisher: SPIE
Volume: 9972
ISSN: 0277-786X
Subject Category
Optics
Report/Patent Number
GSFC-E-DAA-TN41350
Meeting Information
Meeting: Earth Observing Systems XXI
Location: San Diego, CA
Country: United States
Start Date: August 28, 2016
Funding Number(s)
CONTRACT_GRANT: NNX14AP40G
Distribution Limits
Public
Copyright
Other

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