The SWIR hyperspectral imaging system operating over the spectral range 930 – 2500 nm with a spectral resolution of 5.5 nm utilises a push-broom design consisting of a spectrograph and MCT (HgCdTe) camera. It collects the entire spectrum for one spatial line at a time, building spectral image cubes through the horizontal scanning of a region. The optics associated with the system are modular, enabling the instrument to be tailored towards different imaging scales. Two choices of objective lenses are available for mid and close-range SWIR spectral imaging, providing spatial resolutions of 1 mm and 140 µm at working distances of 1m and 10cm, respectively. In its remote configuration a telescope is substituted in place of an objective lens to provide spectral image cube with a 45 µrad angular spatial resolution over a working distance of between 3.5 m and 30 m. ​ For remote spectral imaging, the system is placed on a computer controlled motorised pan/tilt stage that allows for convenient imaging over a large area from one position on the ground without the need to move the instrument;, allowing for the remote spectral imaging of regions at inaccessible heights. For close range configurations scanning may also be achieved via computer controlled motorised linear translation stages.

Dataset/Data package (images, spectra, other)

Noncontact (no physical contact)
Nondestructive (no permanent damage or alteration)
Noninvasive (no physical alteration)

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