The purpose of this survey is to examine the major causes of spectral variability in target
materials, survey some associated physical models, and discuss how hyper spectral …

Obtaining the complex refractive index vectors n (ν~) and k (ν~) allows calculation of the
(infrared) reflectance spectrum that is obtained from a solid in any of its many morphological …

Due to a legacy originating in the limited capability of early computers, the spectroscopic
resolution used in Fourier transform infrared spectroscopy and other systems has largely …

The T-matrix method pioneered by Peter C. Waterman is one of the most versatile and
efficient numerically exact computer solvers of the time-harmonic macroscopic Maxwell …

In remote sensing of planetary bodies, the development of analysis techniques that lead to
quantitative interpretations of data sets has relatively been deficient compared to the wealth …

Machine learning approaches, such as deep neural networks, have shown recent success
for target detection and identification problems in hyperspectral imagery. However, when …

To observe and study the effects of the volume packing density on polarimetric scattering by
deposited particulate materials, a comparison is made between the vector radiative transport …

Standoff detection of hazardous materials using infrared backscattering spectroscopy shows
promise due to its speed of detection, sensitivity, chemical specificity, eye safety, and the …

We report results from a recent field experiment to test the validity of using physics-based
synthetic infrared spectra to serve as endmembers in a spectral database targeted at …

This paper describes measurements being made on a series of material systems for the
purpose of developing a radiative-transfer model that describes the reflectance of light by …