Visible (Vis) and near infrared (NIR) reflectance spectroscopy is a rapid and non-destructive technique that has found many applications in assessing the quality of agricultural commodities, including wool. In this study, Vis and NIR spectroscopy combined with multivariate data analysis was investigated regarding its feasibility in predicting a range of fibre characteristics in raw alpaca wool ...

The increasingly common application of the near-infrared (NIR) hyperspectral imaging technique to the analysis of food powders has led to the need for optical characterization of samples. This study was aimed at exploring the feasibility of quantifying penetration depth of NIR hyperspectral imaging light for milk powder. Hyperspectral NIR reflectance images were collected for eight different mi...

Leaf area index (LAI) is an important biophysical parameter and the retrieval of LAI from remote sensing data is the only feasible method for generating LAI products at regional and global scales. However, most LAI retrieval methods use satellite observations at a specific time to retrieve LAI. Because of the impacts of clouds and aerosols, the LAI products generated by these methods are spatia...

Field spectrometer data and leaf area index (LAI) measurements were collected on the same day as the Earth Observing 1 satellite overpass for a study site in the Patagonia region of Argentina. We first simulated the total at-sensor radiances using MODTRAN 4 for atmospheric correction. Then ground spectroradiometric measurements were used to improve the retrieved reflectance for each pixel on th...

Modifications of phenylalanine amino acid after its exposure to near-infrared (NIR) radiation have been investigated using ATRFTIR (Attenuated Total Reflectance-Fourier Transform Infrared Spectroscopy). The process of amino acid aggregation after its exposure to NIR has been observed. A possible mechanism of amino acid dimer formation has been proposed with the help of theoretical calculations ...

Multifunctional coatings offer many advantages towards protecting various surfaces. Here we apply aggregation induced segregation of perylene diimide (PDI) to control the surface morphology and properties of silica nanoparticles. Differentially functionalized PDI was incorporated on the surface of silica nanoparticles through Si-O-Si bonds. The absorption and emission spectra of the resultant f...

In this study, we comparison of NDVI of ground measurement, atmospheric corrected ASTER LIB data and ASTER surface reflectance product (AST07) data to evaluate the accuracy of the ATCOR software atmospheric correction of Terra/ASTER data (Jun 30, 2002), using ground radiometric measurement data (ASD's FieldSpec® Pro). Our research selected the study area Sarobetsu Marsh located in coastal area ...

ISSN: 0967-0335 © IM Publications LLP 2012 doi: 10.1255/jnirs.973 All rights reserved In the early 1960s, Karl Norris and co-workers of the Agricultural Research Service of the USA Department of Agriculture introduced NIR spectroscopy (700–2500 nm) as an analytical technique for agricultural products. They recognised the potential of the diffuse reflectance measurement for rapid analysis of gra...

Scene identification in satellite imagery over polar regions is difficult because clouds are often similar to the underlying surface in terms of temperature and visible (VIS) reflectance. During the day, however, the brightness temperature difference (BTD) between the 3.7 and 11.0-μm channels on many satellites is greater for clouds than for clear snow allowing for discrimination between clouds...

AN ACTIVE SOURCE, NIR, REFLECTANCE SPECTROMETER IN A ROVER WHEEL, WATERWHEEL IR (WIR), FOR SOIL CHARACTERIZATION IN FUTURE MARS SURFACE EXPLORATION. John J. Freeman, Alian Wang, James Lambert, Department of Earth & Planetary Sciences and the McDonnell Center for the Space Sciences, Washington University, St. Louis, MO, 63130, Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA, 91109,...