| huangshan |
2008-08-12 11:26 |
Summary 9CD_ o s\h
This study is a detailed follow-up to two previous studies concerning stray light in the EO-1 {F.[&/A
telescope (see EO-1 Stray Light Analysis Reports 1 and 2). Following coating of the EO-1 flight E+;7>ja
mirrors, the BRDF was measured by SSG, then re-measured by Schmitt Measurement Systems. 9~[Y-cpoi
The stray spectral radiance from the Stray Radiation Scene described in the LANDSAT 7 XU(eEnmo m
specification was recalculated using the Schmitt BRDF measurements and a simple spreadsheet o|["SYIf
calculation. This calculation assumes the Point Source Transmittance (PST) is rotationally Oxd]y1
symmetric, and does an integration over the Stray Radiation Scene. HLG"a3tt
To refine this estimate of stray radiance, ray-trace simulations were done using TracePro to better A6(/;+n
predict the PST. The PST was used to calculate the stray spectral radiance using a C++ computer 7J< 5f)
program written for this purpose. The stray spectral radiance was computed by integrating over JIq=* '
the LANDSAT 7 Stray Radiation Scene, weighed by the PST.
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