Radiometric performances of the Fourier transform spectrometer for the Radiation Explorer in the Far-Infrared (REFIR) space mission

Luca Palchetti; Giovanni Bianchini; Marco Pellegrini; Francesco Esposito; Rosa Restieri; Giulia Pavese

doi:10.1117/12.565548

4 November 2004 Radiometric performances of the Fourier transform spectrometer for the Radiation Explorer in the Far-Infrared (REFIR) space mission

Luca Palchetti, Giovanni Bianchini, Marco Pellegrini, Francesco Esposito, Rosa Restieri, Giulia Pavese

Author Affiliations +

Proceedings Volume 5570, Sensors, Systems, and Next-Generation Satellites VIII; (2004) https://doi.org/10.1117/12.565548
Event: Remote Sensing, 2004, Maspalomas, Canary Islands, Spain

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.

Citation Download Citation

Luca Palchetti, Giovanni Bianchini, Marco Pellegrini, Francesco Esposito, Rosa Restieri, and Giulia Pavese "Radiometric performances of the Fourier transform spectrometer for the Radiation Explorer in the Far-Infrared (REFIR) space mission", Proc. SPIE 5570, Sensors, Systems, and Next-Generation Satellites VIII, (4 November 2004); https://doi.org/10.1117/12.565548

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