| huangshan |
2008-08-12 11:26 |
Summary T&5dF9a
This study is a detailed follow-up to two previous studies concerning stray light in the EO-1 QvF UFawN
telescope (see EO-1 Stray Light Analysis Reports 1 and 2). Following coating of the EO-1 flight DW,fh8 w
mirrors, the BRDF was measured by SSG, then re-measured by Schmitt Measurement Systems. N;.cZp2
The stray spectral radiance from the Stray Radiation Scene described in the LANDSAT 7 g3i !>
specification was recalculated using the Schmitt BRDF measurements and a simple spreadsheet ua'dm6",:
calculation. This calculation assumes the Point Source Transmittance (PST) is rotationally lYz$~/sd
symmetric, and does an integration over the Stray Radiation Scene. NyJ=^=F#
To refine this estimate of stray radiance, ray-trace simulations were done using TracePro to better R^i8AbFW
predict the PST. The PST was used to calculate the stray spectral radiance using a C++ computer -bq\2Yc$]
program written for this purpose. The stray spectral radiance was computed by integrating over ,uFdhA(i@'
the LANDSAT 7 Stray Radiation Scene, weighed by the PST.
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