| huangshan |
2008-08-12 11:26 |
Summary E2R&[Q"%
This study is a detailed follow-up to two previous studies concerning stray light in the EO-1 LG9+y
telescope (see EO-1 Stray Light Analysis Reports 1 and 2). Following coating of the EO-1 flight - -$
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mirrors, the BRDF was measured by SSG, then re-measured by Schmitt Measurement Systems. =T HpdtL
The stray spectral radiance from the Stray Radiation Scene described in the LANDSAT 7 S[PE$tYT#t
specification was recalculated using the Schmitt BRDF measurements and a simple spreadsheet {zQ8)$CQ
calculation. This calculation assumes the Point Source Transmittance (PST) is rotationally #49kjv@
symmetric, and does an integration over the Stray Radiation Scene. Egg=yF >T
To refine this estimate of stray radiance, ray-trace simulations were done using TracePro to better UQ?XqgUM
predict the PST. The PST was used to calculate the stray spectral radiance using a C++ computer nn@-W]
program written for this purpose. The stray spectral radiance was computed by integrating over +BETF;0D
the LANDSAT 7 Stray Radiation Scene, weighed by the PST.
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