| huangshan |
2008-08-12 11:26 |
Summary o& (wg(Rv
This study is a detailed follow-up to two previous studies concerning stray light in the EO-1 {>8Pl2J
telescope (see EO-1 Stray Light Analysis Reports 1 and 2). Following coating of the EO-1 flight +hE',i.
mirrors, the BRDF was measured by SSG, then re-measured by Schmitt Measurement Systems. NH7`5mF$
The stray spectral radiance from the Stray Radiation Scene described in the LANDSAT 7 ~I{EE[F>qL
specification was recalculated using the Schmitt BRDF measurements and a simple spreadsheet c |>=S)|
calculation. This calculation assumes the Point Source Transmittance (PST) is rotationally 8F#osN
symmetric, and does an integration over the Stray Radiation Scene. T bv/wJ
To refine this estimate of stray radiance, ray-trace simulations were done using TracePro to better &4 ,WG
predict the PST. The PST was used to calculate the stray spectral radiance using a C++ computer ?b||Cr
program written for this purpose. The stray spectral radiance was computed by integrating over x^A7'ad0
the LANDSAT 7 Stray Radiation Scene, weighed by the PST.
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