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Proceedings Paper

Next-generation pushbroom filter radiometers for remote sensing
Author(s): Richard W. Tarde; Michael G. Dittman; Geir E. Kvaran
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Paper Abstract

Individual focal plane size, yield, and quality continue to improve, as does the technology required to combine these into large tiled formats. As a result, next-generation pushbroom imagers are replacing traditional scanning technologies in remote sensing applications. Pushbroom architecture has inherently better radiometric sensitivity and significantly reduced payload mass, power, and volume than previous generation scanning technologies. However, the architecture creates challenges achieving the required radiometric accuracy performance. Achieving good radiometric accuracy, including image spectral and spatial uniformity, requires creative optical design, high quality focal planes and filters, careful consideration of on-board calibration sources, and state-of-the-art ground test facilities. Ball Aerospace built the Landsat Data Continuity Mission (LDCM) next-generation Operational Landsat Imager (OLI) payload. Scheduled to launch in 2013, OLI provides imagery consistent with the historical Landsat spectral, spatial, radiometric, and geometric data record and completes the generational technology upgrade from the Enhanced Thematic Mapper (ETM+) whiskbroom technology to modern pushbroom technology afforded by advanced focal planes. We explain how Ball’s capabilities allowed producing the innovative next-generational OLI pushbroom filter radiometer that meets challenging radiometric accuracy or calibration requirements. OLI will improve the multi-decadal land surface observation dataset dating back to the 1972 launch of ERTS-1 or Landsat 1.

Paper Details

Date Published: 15 October 2012
PDF: 21 pages
Proc. SPIE 8510, Earth Observing Systems XVII, 851008 (15 October 2012); doi: 10.1117/12.966853
Show Author Affiliations
Richard W. Tarde, Ball Aerospace & Technologies Corp. (United States)
Michael G. Dittman, Ball Aerospace & Technologies Corp. (United States)
Geir E. Kvaran, Ball Aerospace & Technologies Corp. (United States)

Published in SPIE Proceedings Vol. 8510:
Earth Observing Systems XVII
James J. Butler; Xiaoxiong Xiong; Xingfa Gu, Editor(s)

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