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Proceedings Article

Derivation of the MODIS Aqua Point-Spread Function ocean color bands

[+] Author Affiliations
Gerhard Meister

Futuretech Corp., NASA Goddard Space Flight Ctr. (USA)

Yuqin Zong

National Institute of Standards and Technology (USA)

Charles R. McClain

NASA Goddard Space Flight Ctr. (USA)

Proc. SPIE 7081, Earth Observing Systems XIII, 70811F (August 28, 2008); doi:10.1117/12.796980
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From Conference Volume 7081

  • Earth Observing Systems XIII
  • James J. Butler; Jack Xiong
  • San Diego, California, USA | August 10, 2008

abstract

The Moderate Resolution Imaging Spectroradiometer (MODIS) on the Earth Observing System (EOS) Aqua platform has 9 spectral bands with center wavelengths from 412nm to 870nm that are used to produce the standard ocean color data products. Ocean scenes usually contain high contrast due to the presence of bright clouds over dark water. The MODIS has been characterized for straylight effects prelaunch. In this paper, we derive Point-Spread Functions for the MODIS Aqua ocean bands based on the prelaunch Near-Field Response measurements. We use Harvey-Shack coefficients derived by the system vendor Santa Barbara Remote Sensing. The crucial step in the derivation of the Point-Spread Function is the normalization of the Harvey-Shack coefficients relative to the center pixel. The straylight contamination of ocean scenes is evaluated based on artificial test scenes. Furthermore, the dependence of top-of-atmosphere radiances and ocean color products on proximity to a cloud is analyzed, and a straylight correction algorithm is proposed.

© (2008) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Gerhard Meister ; Yuqin Zong and Charles R. McClain
"Derivation of the MODIS Aqua Point-Spread Function ocean color bands", Proc. SPIE 7081, Earth Observing Systems XIII, 70811F (August 28, 2008); doi:10.1117/12.796980; http://dx.doi.org/10.1117/12.796980


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