Validated surface mineralogy from high-spectral resolution remote sensing: a review and a novel approach applied to gold exploration using AVIRIS data

摘要: Remote sensing’s main limitation to date was that geological surface information lacked detail due the broad bandwidth of operational scanners. Imaging spectrometers now allow acquisition image data in many contiguous spectral bands, with aim producing laboratory-like reflectance spectra for each pixel scene which can be directly compared known materials measured field or laboratory mineral identification on Earth surface. The advent satellite-based imaging spectrometer systems justifies surge techniques automatic preparation validated mineralogy maps. We show an extension a procedure as cross-correlogram matching retrieve accuracy assessed from Airborne Visible/InfraRed Spectrometer (AVIRIS). is based cross-correlation unknown AVIRIS. validation performed through root-mean square calculation expected correlograms and correlograms. Results obtained study outlined accurate delineation zones hydrothermal alteration area active gold exploration.