A5008528994- Geochemistry and Geologic Mapping
- Soil Geostatistics and Mapping
- Spectroscopy and Chemometric Analyses
- Remote-Sensing Image Classification
- Spacecraft Design and Technology
- Mineral Processing and Grinding
- Remote Sensing in Agriculture
- Space Satellite Systems and Control
- Groundwater and Isotope Geochemistry
- Astro and Planetary Science
Martin Luther University Halle-Wittenberg
2015-2024
This paper presents the first use of close range terrestrial hyperspectral imaging to explore by-products from iron and steel industry at a dump site cross section, using established mapping approaches in geological remote sensing. Laboratory reflectance measurements, X-Ray diffraction chemical analysis provided benchmark for results. In addition, laser scanning was applied create high resolution 3D model studied image classification integration. Results demonstrate applicability spectral...
This study aimed to predict soil properties using visible–near infrared (VIS-NIR) spectroscopy combined with partial least square regression (PLSR) modeling. Special emphasis was given evaluating effect of pre-processing methods on prediction accuracy and important wavelengths. A total 114 samples were collected involved in chemical spectral analyzes. PLSR model each property calibrated for all samples, leave-one-out cross-validation used make comparisons between them. Then, best method a...
Soil spectroscopy is a promising alternative to evaluate and monitor soil water quality, particularly in mountainous agricultural lands characterized by intense degradation limited tests reports; few studies have evaluated the feasibility of VIS-NIR predict Mehlich 3 (M3) extractable nutrients. This study aimed (i) examine potential combination with partial least squares regression M3-extractable elements (Ca, K, Mg, P, Fe, Cd, Cu, Mn, Pb, Zn) basic properties (clay, silt, sand, CaCO3, pH,...
We evaluated the opportunities and performance of a new type systematic pixel sharp calibration site for airborne hyperspectral mineral mapping in environment an operational copper deposit Mongolia. The was designed to be used estimation sensitivity quantification key minerals individual pixels specific geological scenarios. layout done with two different copper-containing rock samples, low material from mine, tailing materials well-defined known spectral features. scaled coverage sample...
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Visible-near infrared (Vis-NIR) and mid-infrared (MIR) spectroscopy are increasingly being used for the fast determination of soil properties. The aim this study was (i) to test use MIR spectra (Agilent 4300 FTIR Handheld spectrometer) prediction properties (ii) compare performances Vis-NIR (ASD FieldSpecPro) spectra; data were adopted from a previous study. Both coupled with partial least squares regression, different pre-processing techniques, same 114 samples, collected agricultural land...
<title>Abstract</title> The importance of a safe food supply has increased due to climate change and its consequences. number severity floods, droughts plant diseases are rising which causes massive crop failures. Early precise detection can lower failures as it enables early containment. Moreover, promotes the targeted use pesticides protect biodiversity. Satellite sensors improve by enabling frequent extensive vegetation observation. Hence, we present design camera system for Earth...
Abstract The importance of a safe food supply has increased due to climate change and its consequences. number severity floods, droughts plant diseases are rising which causes massive crop failures. Early precise detection can lower failures as it enables early containment. Moreover, promotes the targeted use pesticides protect biodiversity. Satellite sensors improve by enabling frequent extensive vegetation observation. Hence, we present design camera system for Earth observation on small...
Reflectance spectroscopy is a nondestructive, rapid, and easy-to-use technique which can be used to assess the composition of rocks qualitatively or quantitatively. Although it powerful tool, has its limitations especially when comes measurements with phaneritic texture. The external variability reflected only in not chemical-mineralogical that are performed on crushed rock certified laboratories. Hence, spectral surface an uncrushed will, most cases, higher than internal variability, may...