| huangshan |
2008-08-12 11:26 |
Summary tk&AZb,sP
This study is a detailed follow-up to two previous studies concerning stray light in the EO-1 n#lbfN 4
telescope (see EO-1 Stray Light Analysis Reports 1 and 2). Following coating of the EO-1 flight a!9'y c
mirrors, the BRDF was measured by SSG, then re-measured by Schmitt Measurement Systems. xB
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The stray spectral radiance from the Stray Radiation Scene described in the LANDSAT 7 MJ|tfQwhx
specification was recalculated using the Schmitt BRDF measurements and a simple spreadsheet ]n!V
calculation. This calculation assumes the Point Source Transmittance (PST) is rotationally HwUaaK
symmetric, and does an integration over the Stray Radiation Scene. ipu!{kJ
To refine this estimate of stray radiance, ray-trace simulations were done using TracePro to better E#$Jg|e
predict the PST. The PST was used to calculate the stray spectral radiance using a C++ computer U.e!:f4{
program written for this purpose. The stray spectral radiance was computed by integrating over ~"#0rPT
the LANDSAT 7 Stray Radiation Scene, weighed by the PST.
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