| huangshan |
2008-08-12 11:26 |
Summary mjB%"w!S
This study is a detailed follow-up to two previous studies concerning stray light in the EO-1 0%'&s)#
telescope (see EO-1 Stray Light Analysis Reports 1 and 2). Following coating of the EO-1 flight QabF(}61
mirrors, the BRDF was measured by SSG, then re-measured by Schmitt Measurement Systems. -] J V
The stray spectral radiance from the Stray Radiation Scene described in the LANDSAT 7 RUO,tB|(_;
specification was recalculated using the Schmitt BRDF measurements and a simple spreadsheet \ J9@p
calculation. This calculation assumes the Point Source Transmittance (PST) is rotationally Y}nE/bmx&9
symmetric, and does an integration over the Stray Radiation Scene. 4V<s"
To refine this estimate of stray radiance, ray-trace simulations were done using TracePro to better /o8h1L=
predict the PST. The PST was used to calculate the stray spectral radiance using a C++ computer mQJRq??P
program written for this purpose. The stray spectral radiance was computed by integrating over wm 8 (Ju
the LANDSAT 7 Stray Radiation Scene, weighed by the PST.
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