| huangshan |
2008-08-12 11:26 |
Summary F/,6Jh
This study is a detailed follow-up to two previous studies concerning stray light in the EO-1 }gFa9M<
telescope (see EO-1 Stray Light Analysis Reports 1 and 2). Following coating of the EO-1 flight }@/Ox
mirrors, the BRDF was measured by SSG, then re-measured by Schmitt Measurement Systems. @' %XdH
The stray spectral radiance from the Stray Radiation Scene described in the LANDSAT 7 e pG]$T![
specification was recalculated using the Schmitt BRDF measurements and a simple spreadsheet SL`; `//
calculation. This calculation assumes the Point Source Transmittance (PST) is rotationally _00}O+GLM4
symmetric, and does an integration over the Stray Radiation Scene. > 5?c93?
To refine this estimate of stray radiance, ray-trace simulations were done using TracePro to better $ at \aJ
predict the PST. The PST was used to calculate the stray spectral radiance using a C++ computer *M$mAy<
program written for this purpose. The stray spectral radiance was computed by integrating over gPA8A>U)[
the LANDSAT 7 Stray Radiation Scene, weighed by the PST.
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