Solar diffusers in Earth observation instruments with an illumination angle of up to 70°: design and verification of performance in BRDF

Bilgehan Gür; Hans Bol; Pengmei Xu; Bicen Li

doi:10.1117/12.2191601

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20 October 2015 Solar diffusers in Earth observation instruments with an illumination angle of up to 70°: design and verification of performance in BRDF

Bilgehan Gür; Hans Bol; Pengmei Xu; Bicen Li

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Proceedings Volume 9644, Earth Resources and Environmental Remote Sensing/GIS Applications VI; 964402 (2015) https://doi.org/10.1117/12.2191601
Event: SPIE Remote Sensing, 2015, Toulouse, France

Abstract

The present paper describes the challenging diffuser design and verification activities of TNO under contract of a customer for an earth observation instrument with observation conditions that require feasible BRDF under large angles of incidence of up to 70° with respect to the surface normal. Not only the design though but also the verification of the diffuser performance under such angles including "out-of-plane", i.e. angle theta detection of the scattered light, was an essential activity to be executed. In this paper we will summarize the R&D activities with respect to diffuser design and verification that were recently carried out at TNO and present its applicability to current and future earth observation missions with challenging observation conditions and thus challenging diffuser requirements under high illumination angles.

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Bilgehan Gür, Hans Bol, Pengmei Xu, and Bicen Li "Solar diffusers in Earth observation instruments with an illumination angle of up to 70°: design and verification of performance in BRDF", Proc. SPIE 9644, Earth Resources and Environmental Remote Sensing/GIS Applications VI, 964402 (20 October 2015); https://doi.org/10.1117/12.2191601

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