|
This paper describes aircraft flight campaign test results for the Imaging spectral signature instrument (ISSI) breadboard developed in the ESA contract 19754/06/NL/PA. The ISSI project was inspired by the Informationefficient hyperspectral imaging sensor (ISIS) [1]. The development and design of the ISSI breadboard is described in [2]. ISSI is a line imaging programmable correlation spectrometer. ISSI is implemented with a front objective, two spectrographs, a liquid crystal display (LCD) spatial light modulator (SLM) and a line sensor. A line imaged by the front objective is dispersed by the first spectrograph on the LCD. Any transmission pattern can be programmed on the LCD. The modulated image is then re-gathered by the second spectrograph to a line on the CCD line detector. Effectively the system performs a dot product between the transmission vector on the LCD and the spectral signature vector of the imaged pixel, where the spectral bins are the components of the vector. Different hyperspectral correlation algorithms, which contain this dot product, can be implemented.
|
