Application of an airborne hyper-spectral survey system CASI/SASI in the gold-silver-lead-zinc ore district of Huaniushan, Gansu, China

The airborne hyper-spectral survey system CASI/SASI, which has an integrated for gathering both image spectral data, is at the cutting edge developments in remote-sensing field. It can be used to directly identify surface objects based on diagnostic characteristics. In this paper, CASI/SASI were Huaniushan gold-silver-lead-zinc ore district–Gansu produce a lithologic map, altered minerals, and map mineralized-alteration zones. Radiometric correction, radiometric calibration, atmospheric correction (spectral reconstruction), geometric corrections carried out ENVI pre-process measured data. A FieldSpec ® Pro FR portable spectrometer was obtain signatures of all types rock samples, deposits, We extracted analyzed characteristics typical alteration minerals. On basis ground-spectral data processing, comparative analysis spectrum, we spectral-angle-mapping (SAM) mixture-tuned matchedfiltering (MTMF) methods perform hyperspectral-alteration mineral mapping wall mineralized-alteration-zone hyperspectral identification. Hyperspectral- remote- sensing geological- classification maps produced as well distribution kinds minerals Based geological comprehensive field investigations, range proven same shown by imagery. Indications are that hyperspectral- -image offer good application results show promising potential tool investigations. will provide prospecting or similar unexplored areas.