Performance analysis of conical cavities for surface temperature retrieval with a Fourier transform infrared spectrometer

Eliel Villa-Aleman

doi:10.1117/12.459573

15 March 2002 Performance analysis of conical cavities for surface temperature retrieval with a Fourier transform infrared spectrometer

Eliel Villa-Aleman

Author Affiliations +

Proceedings Volume 4710, Thermosense XXIV; (2002) https://doi.org/10.1117/12.459573
Event: AeroSense 2002, 2002, Orlando, FL, United States

Abstract

The Savannah River Technology Center (SRTC) is conducting measurements in the visible, near-infrared and infrared spectral regions of selected ground targets in support to the Department of Energy Multispectral Thermal Imager (MTI) satellite. Radiometers have been used to retrieve surface temperature from water and land targets. Surface temperature measurements of land targets are often complicated by the wavelength dependent emissivity. Conical cavities have been employed on land targets to increase the surface effective emissivity and therefore the apparent surface temperature. Surface effective emissivity values near unity offer the opportunity for absolute surface temperature retrieval. The efficacy of conical cavities for absolute surface temperature retrievals was studied with a calibrated Fourier transform infrared spectrometer (FTIR). The research paper presents the results of surface temperature retrievals of targets with low emissivity values with the aid of conical cavities.

Citation Download Citation

Eliel Villa-Aleman "Performance analysis of conical cavities for surface temperature retrieval with a Fourier transform infrared spectrometer", Proc. SPIE 4710, Thermosense XXIV, (15 March 2002); https://doi.org/10.1117/12.459573

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