HSI
GRC Hyperspectral Imager

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