Analysis and Research on Mineral Hyperspectral Features
Hyperspectral Remote Sensing Technology in geological prospecting, spectral feature information extraction and other aspects have made significant progress, and a lot of achievements. Compared with the traditional geological survey, mapping prospecting, geological mapping using hyperspectral have low cost, low consumption, so using hyperspectral remote sensing data have the potential prospects of innovative traditional survey methods. The main object of study is about the western Junggar Basin west to Xiemisitai of East. Experiment on the rock of weathered and fresh face about field spectra, indoor control spectra. Dates of spectral reflectance weathered face and a fresh face comparative analysis have showed that spectral characteristics of weathering rocks and minerals has little effect, but effect its impact on the size of the reflectance. The relationship between mineral elements and mineral composition and spectral characteristics of the samples have investigated between and extract the spectral characteristics and spectral indices of different samples, extract alteration information hyperspectral data providing. 1 Background and Study area With the rapid sustainable development of our economy, the national economy the demand for mineral resources and energy is increasing. At the same time, surface exposed, burial and the number of known types of deposits added a significant reduction in proven reserves of shallow, making it difficult to meet the needs of traditional prospecting methods. Mining exploration and mining practice at home and abroad has proved that the crisis mine called "resource depletion" is often not enough due to the geological exploration, resource potential has not been fully tapped, and within a certain period of mine and there are around deep resource potential to be tapped, there is an urgent need for largescale, rapid exploration of mineral resources, to explore new ways of using new methods and techniques to enhance deep mines and peripheral prospecting prediction, the selection focused prospecting targets, provide a scientific basis for the development of sustainable mining Wall rock alteration is progressively enriched mineralization into minerals left imprinted, most altered rocks and rock types, structure, colours, etc. are obvious differences that determine the characteristics of these rocks reflection spectrum differences, and in particular the formation of the alteration characteristic spectral band spectrum[1,6,9] By applying a high spectral characteristic spectral data to identify mineral extraction feature wall rock alteration is an effective method of prospecting. At present, the theory of remote sensing information extraction of mineralization and alteration numerous, in which the study of multi spectral data of principal component analysis and other analytical methods are mostly applied research hyperspectral data in terms of mineralization alteration information extraction has also made some progress. In this study, hyperspectral remote sensing alteration information extraction technology research as a starting point, through the analysis of the spectral characteristics of altered minerals, alteration of iron ore extracted information in the study area; geological data, mineralization of the region Prediction provide data support and technical support. Electromagnetic and surface rocks, geological play a role, resulting in its characteristic spectral remote sensing Extraction of mineralization alteration information provides a physical basis, with the development of remote sensing imaging technology and digital image processing technology, the use of remote sensing technology with multiple sources geoscience information extraction mine alteration of information is increasingly being applied to practical geological work[2,8] Multispectral self limiting because the spectral resolution, it is difficult to feature unique rich spectrum information to distinguish. With hyperspectral technology matures, related geological and remote sensing experts have done a lot of work in geological prospecting, spectral feature information extraction, etc. as more and more complete feature standard spectral library (USGS, JPL Mineral Spectral library, Chinese typical feature standard spectra databases, etc. the new hyperspectral data processing and analysis methods, which laid the foundation for the further application of high spectrum[3 5] Hyperspectral imaging spectrometer remote sensing technology will breakdown spectroscopy imaging techniques and technology together, compared with multispectral, hyperspectral remote sensing data has the following characteristics: a large amount of data, the correlation between the higher band, data redundancy higher margin [7] Hyperspectral remote sensing space, there are a wealth of information, radiation information, three dimensional information spectrum, between time resolution and spatial resolution has more advantages, high spectral remote sensing can be improved from the spectral resolution remote sensing images. Therefore, in the field of geological study, combined with hyperspectral remote sensing technology can not only widen the field of applications of space remote sensing, the study may also have the advantage of bare rock area, the effect will be more prominent. International Symposium on Material, Energy and Environment Engineering (ISM3E 2015) (c) 2015. The authors Published by Atlantis Press 9 Figure1. Absorption spectra of rock samples Study area is located in the northern part of Xinjiang border about the western Junggar Basin west to Xiemisitai of East. Administrative division has belonged under the jurisdiction of the Ili Kazak Autonomous Prefecture Tacheng. The main research areas are Mongolian Autonomous County of Hoboksar from about 40 km southwest of the county. Geographical coordinates the approximate range: E85 deg 00' 85 deg 45 N46 deg 33' 46 deg 44' The key field survey area have located in E45 deg 55'43.16 " 46 deg 51'34.24" N85 deg 43'57.21 " 85 deg 48'57.21"