| huangshan |
2008-08-12 11:26 |
Summary c1Xt$[_
This study is a detailed follow-up to two previous studies concerning stray light in the EO-1 qa2QS._m
telescope (see EO-1 Stray Light Analysis Reports 1 and 2). Following coating of the EO-1 flight weKwBw
mirrors, the BRDF was measured by SSG, then re-measured by Schmitt Measurement Systems. ] =7}Y%6
The stray spectral radiance from the Stray Radiation Scene described in the LANDSAT 7 "4zT P!Ow
specification was recalculated using the Schmitt BRDF measurements and a simple spreadsheet UJ2T j+
calculation. This calculation assumes the Point Source Transmittance (PST) is rotationally Y}Y2 Vx
symmetric, and does an integration over the Stray Radiation Scene. 7 C
F-?M!
To refine this estimate of stray radiance, ray-trace simulations were done using TracePro to better y.H E3tH
predict the PST. The PST was used to calculate the stray spectral radiance using a C++ computer )lE ]DG!
program written for this purpose. The stray spectral radiance was computed by integrating over 5l } v
the LANDSAT 7 Stray Radiation Scene, weighed by the PST.
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