Study on the Spectral Analysis Approaches to In-situ Leachable Sandstone-Type Uranium Deposits

摘要

With the rapid development of the atomic energy, the exploration of economic uranium deposits have been greatly promoted. Hyperspectral Remote Sensing (HRS) as one of the forefront fields of optic remote sensing provides the new tool for the swift exploration and evaluation of in-situ leachable sandstone-type uranium deposits. This article adopts the Modified Guassian Model (MGM) to study the diagnosable spectral character and quantitatively analyze and extract the absorption spectral feature of sandstone-type uranium deposits in the north china. Results show the simulated curve is very fit to the field spectrum and the absorption spectral feature can be quantitatively expressed by defined functions. Furthermore, The authors develop the Vegetation Red Edge Parameter (VREP) model to analyze the spectral variance rule of vegetation between uranium deposits area and background site. Studies indicate that the phenomena of vegetation stress are existed in uranium deposits area, and the growth status of vegetation is influenced by radioactivate nuclide. All those results and experiences provide the new remote sensing approaches to the prospect and evaluation of uranium resources.