Article

Scattering Properties of Planetary Regolith Analogs

05/2002;
Source: NTRS

ABSTRACT Samples of well-sorted materials have been studied to determine how their scattering properties change with changing particle size. Additional information is contained in the original extended abstract.

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    Article: Aperture size effects on backscatter intensity measurements in Earth and space remote sensing.
    Mikko Kaasalainen, Sanna Kaasalainen
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    ABSTRACT: Most materials show a peaked intensity versus phase (light-source-target-detector angle) curve. For nonnegligible angular apertures of the source and/or the detector, the measured intensity at and near zero phase (backscatter) is lower than the real one. We derive an averaging aperture integral that represents this effect, and with it we invert measured intensity values to obtain the actual intensity curve. We also give a practical formula for estimating the magnitude of the aperture effect in zero-phase intensity measurements and show that only two such measurements made at different apertures are sufficient for deriving the real intensity. These corrections are needed in the comparison of measured reflectances in an increasing number of validation efforts for remote sensing applications requiring ground truth measurements.
    Journal of the Optical Society of America A 06/2008; 25(5):1142-6. · 1.56 Impact Factor
Data provided are for informational purposes only. Although carefully collected, accuracy cannot be guaranteed. The impact factor represents a rough estimation of the journal's impact factor and does not reflect the actual current impact factor. Publisher conditions are provided by RoMEO. Differing provisions from the publisher's actual policy or licence agreement may be applicable.

Keywords

abstract
 
particle size
 
scattering properties change