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首页> 美国政府科技报告 >Simulation Study of a Geometric Shape Factor Technique for Estimating Earth-Emitted Radiant Flux Densities from Wide-Field-of-View Radiation Measurements.
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Simulation Study of a Geometric Shape Factor Technique for Estimating Earth-Emitted Radiant Flux Densities from Wide-Field-of-View Radiation Measurements.

机译：用宽视场辐射测量估算地球辐射通量密度的几何形状因子技术仿真研究。

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Geometric shape factors were computed and applied to satellite simulated irradiance measurements to estimate Earth emitted flux densities for global and zonal scales and for areas smaller than the detector field of view (FOV). Wide field of view flat plate detectors were emphasized, but spherical detectors were also studied. The radiation field was modeled after data from the Nimbus 2 and 3 satellites. At a satellite altitude of 600 km, zonal estimates were in error 1.0 to 1.2 percent and global estimates were in error less than 0.2 percent. Estimates with unrestricted field of view (UFOV) detectors were about the same for Lambertian and limb darkening radiation models. The opposite was found for restricted field of view detectors. The UFOV detectors are found to be poor estimators of flux density from the total FOV and are shown to be much better as estimators of flux density from a circle centered at the FOV with an area significantly smaller than that for the total FOV.

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