| huangshan |
2008-08-12 11:26 |
Summary P{o / /M
This study is a detailed follow-up to two previous studies concerning stray light in the EO-1 H]&^>Pvh
telescope (see EO-1 Stray Light Analysis Reports 1 and 2). Following coating of the EO-1 flight NEcE -7aT
mirrors, the BRDF was measured by SSG, then re-measured by Schmitt Measurement Systems. /Pgc W
The stray spectral radiance from the Stray Radiation Scene described in the LANDSAT 7 H+Se
specification was recalculated using the Schmitt BRDF measurements and a simple spreadsheet 9vJ'9Z2\
calculation. This calculation assumes the Point Source Transmittance (PST) is rotationally
5)<}a&;{
symmetric, and does an integration over the Stray Radiation Scene. mE3M$2}
To refine this estimate of stray radiance, ray-trace simulations were done using TracePro to better |f< -lB[ k
predict the PST. The PST was used to calculate the stray spectral radiance using a C++ computer 5J m %*Wb
program written for this purpose. The stray spectral radiance was computed by integrating over DT>Giic
the LANDSAT 7 Stray Radiation Scene, weighed by the PST.
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