HSI
GRC Hyperspectral Imager

The Hyperspectral Imager (HSI) is an airborne hyperspectral pushbroom imaging system developed by the NASA Glenn Research Center (GRC). It collects radiance measurements of the Earth's surface in the 400 to 900 nm wavelength range with a spectral resolution of 2.5 nm. HSI has a spatial resolution of approximately 1 m and a swath width of 658 m for a flight altitude of 3 km. It has been used for the mapping of harmful algal blooms (HABs) within the Great Lakes.