Ferrec Yann, Taboury Jean, Sauer Hervé, Chavel Pierre, Fournet Pierre, Coudrain Christophe, Deschamps Joël, Primot Jérôme
Onera (Office National d’Études et de Recherches Aérospatiales), Chemin de la Hunière, BP 80100, F-91123 Palaiseau Cedex, France.
Appl Opt. 2011 Oct 20;50(30):5894-904. doi: 10.1364/AO.50.005894.
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.
已开发出一种用于航空用途的高 étendue 静态傅里叶变换光谱成像仪。这种成像光谱仪基于带有屋脊镜的迈克尔逊干涉仪，结构紧凑且坚固耐用，具有较高的采集效率。在可见光领域获取了实验性航空图像。描述了将原始图像转换为高光谱数据的处理流程，并展示了航空光谱图像。这些实验结果表明，光谱分辨率接近预期，但信噪比也受到各种现象（抖动、高度波动和一个寄生图像）的限制。我们讨论了这些限制的根源，并提出了规避它们的解决方案。
