Experimental results from an airborne static Fourier transform imaging spectrometer.
A high étendue static Fourier transform spectral imager has been developed for airborne use. This imaging spectrometer, based on a Michelson interferometer with rooftop mirrors, is compact and robust and benefits from a high collection efficiency. Experimental airborne images were acquired in the visible domain. The processing chain to convert raw images to hyperspectral data is described, and airborne spectral images are presented. These experimental results show that the spectral resolution is close to the one expected, but also that the signal to noise ratio is limited by various phenomena (jitter, elevation fluctuations, and one parasitic image). We discuss the origin of those limitations and suggest solutions to circumvent them.
Onera (Office National d’Études et de Recherches Aérospatiales), Chemin de la Hunière, BP 80100, F-91123 Palaiseau Cedex, France. yann.ferrec@onera.fr
Yann
Y
Ferrec
Jean
J
Taboury
Hervé
H
Sauer
Pierre
P
Chavel
Pierre
P
Fournet
Christophe
C
Coudrain
Joël
J
Deschamps
Jérôme
J
Primot