| huangshan |
2008-08-12 11:26 |
Summary _<= U.T`
This study is a detailed follow-up to two previous studies concerning stray light in the EO-1 w<.{(1:v
telescope (see EO-1 Stray Light Analysis Reports 1 and 2). Following coating of the EO-1 flight bJmVq%>;
mirrors, the BRDF was measured by SSG, then re-measured by Schmitt Measurement Systems. 7H a
+ @
The stray spectral radiance from the Stray Radiation Scene described in the LANDSAT 7 t8E'd :pE
specification was recalculated using the Schmitt BRDF measurements and a simple spreadsheet n!~{4
uUW
calculation. This calculation assumes the Point Source Transmittance (PST) is rotationally e(O"V3wq*6
symmetric, and does an integration over the Stray Radiation Scene. v|<Dc8i+
To refine this estimate of stray radiance, ray-trace simulations were done using TracePro to better i/NY86A
predict the PST. The PST was used to calculate the stray spectral radiance using a C++ computer l;b5 v]~
program written for this purpose. The stray spectral radiance was computed by integrating over =Y R/X@ &
the LANDSAT 7 Stray Radiation Scene, weighed by the PST.
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