| huangshan |
2008-08-12 11:26 |
Summary },>pDeX^P
This study is a detailed follow-up to two previous studies concerning stray light in the EO-1 g)_e]&
telescope (see EO-1 Stray Light Analysis Reports 1 and 2). Following coating of the EO-1 flight {jho&Ai
mirrors, the BRDF was measured by SSG, then re-measured by Schmitt Measurement Systems. bV$) !]V
The stray spectral radiance from the Stray Radiation Scene described in the LANDSAT 7 # P?6@\
specification was recalculated using the Schmitt BRDF measurements and a simple spreadsheet , 'ZD=4_
calculation. This calculation assumes the Point Source Transmittance (PST) is rotationally G_k~X"
symmetric, and does an integration over the Stray Radiation Scene. m ysetv&5
To refine this estimate of stray radiance, ray-trace simulations were done using TracePro to better L?Qg#YSd ~
predict the PST. The PST was used to calculate the stray spectral radiance using a C++ computer ])
rrG/3
program written for this purpose. The stray spectral radiance was computed by integrating over '&gF>
the LANDSAT 7 Stray Radiation Scene, weighed by the PST.
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