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Proceedings Paper

Radiometric performances of the Fourier transform spectrometer for the Radiation Explorer in the Far-Infrared (REFIR) space mission
Author(s): Luca Palchetti; Giovanni Bianchini; Marco Pellegrini; Francesco Esposito; Rosa Restieri; Giulia Pavese
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Paper Abstract

In the framework of the Radiation Explorer in the Far InfraRed space mission for the characterization in the far infrared of the Earth outgoing emission, a breadboard version of the Fourier transform spectrometer, which is the core instrument of the payload package, has been developed. The Fourier transform spectrometer operates in the spectral range of 100-1100 cm-1 with a resolution of 0.5 cm-1, 6.5 s acquisition time, and signal-to-noise ratio better than 100. It is a compact prototype designed both for laboratory applications and for field campaigns, in particular for operations in high-altitude ground-based sites and on-board of stratospheric balloon platforms. This paper describes the instrument characterization performed in laboratory conditions and under vacuum. The study has allowed to study the trade-off among all the instrument parameters and to test the new optical design of the interferometer, with particular attention to the photolithographic beam splitters and the room-temperature pyroelectric detectors. The instrument was operated for the first time in a field campaign in June 2004 from 1247~m altitude ground-based site located in the South of Italy. The results of this test and the comparison with the measurements taken with a BOMEM spectrometer, that partially overlaps the REFIR bandwidth in the higher spectral region, are reported. Info can be found at http://radiation.ifac.cnr.it.

Paper Details

Date Published: 4 November 2004
PDF: 12 pages
Proc. SPIE 5570, Sensors, Systems, and Next-Generation Satellites VIII, (4 November 2004); doi: 10.1117/12.565548
Show Author Affiliations
Luca Palchetti, Istituto di Fisica Applicata Nello Carrara, CNR (Italy)
Giovanni Bianchini, Istituto di Fisica Applicata Nello Carrara, CNR (Italy)
Marco Pellegrini, Istituto di Fisica Applicata Nello Carrara, CNR (Italy)
Francesco Esposito, Univ. degli Studi della Basilicata (Italy)
Rosa Restieri, Univ. degli Studi della Basilicata (Italy)
Giulia Pavese, Istituto di Metodologie per l'Analisi Ambientale, CNR (Italy)


Published in SPIE Proceedings Vol. 5570:
Sensors, Systems, and Next-Generation Satellites VIII
Roland Meynart; Steven P. Neeck; Haruhisa Shimoda, Editor(s)

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