Chinaโs GaoFen-5 satellite was launched on May 9th, 2018. AHSI has a spectral range of 400-2500 nm, with spectral resolutions of 5 nm in VNIR (visible/near-infrared), and 10 nm in SWIR (short-wave infrared), respectively. The swath width is 60 km, the total number of spectral bands is 330, and the spatial resolution is 30 m. The performance metrics of AHSI are comparable or superior comparing to the state-of-art advanced hyperspectral sensors, such as recently launched DESIS [1] of DLR-Teledyne (launched in 2018.8), HySIS [2] of India (launched in 2018.11), PRISMA [3] of Italy (launched in 2019.3), and EnMAP [4] of Germany and HISUI of Japan [5] which are scheduled for launch in the next few years. This paper provides an overview of the AHSI instrument, summarizes the on-orbit performance verification and validation activities.
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