Due to the difficulty in accurately interpreting surface emissivity spectra, problems remain in the application of passive microwave satellite observations over land surfaces. This study develops a parameterized soil surface emissivity model to quantify the microwave emissivity accurately and rapidly for Gaussian-correlated rough surfaces. We first analyze the sensitivity of surface emissivity ...

Data from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) have a significant advantage over previous datasets because of the combination of high spatial resolution (15–90 m) and enhanced multispectral capabilities, particularly in the thermal infrared (TIR) atmospheric window (8–12 μm) of the Earth where common silicate minerals are more easily identified. However, th...

In low light conditions, visible light face identification is infeasible due to the lack of illumination. For nighttime surveillance, thermal imaging is commonly used because of the intrinsic emissivity of thermal radiation from the human body. However, matching thermal images of faces acquired at nighttime to the predominantly visible light face imagery in existing government databases and wat...

Context. (4) Vesta and (9) Metis are large main-belt asteroids with high albedos. There are strong indications for heterogeneous surfaces for both targets from imaging techniques in the visible and near-IR range, very likely connected to impact structures. Despite that, the thermal spectral energy distributions from mid-IR to the mm-range have, until now, been consistent with a homogeneous rego...

High-temperature stable emitters with spectral selective functionality are an absolute condition for efficient conversion of thermal radiation into electricity using thermophotovoltaic (TPV) systems. Usually, made up multilayered materials or geometrical structures resulting from complex fabrication processes. Here, we report a spectrally emitter based on single metal layer coating molybdenum (...

The nonuniform emissivity of material surface will adversely affect the detection results thermal imaging technology. Aiming at influence uneven on dynamic mode eddy current thermography, a suppression method based edge is proposed in this paper. Since traditional threshold selection methods are not ideal, local adaptive (LATS) applied study. This can automatically obtain optimal for to suppres...

Recently, Narayan & Raymond (1999) proposed that the thermal emission lines from the hot plasma in advection dominated accretion flows (ADAFs) are potentially observable with the next generation of X-ray observatories, with which the physical properties of some X-ray sources can be probed. In ADAFs, the temperature of the ion is so high that the thermal broadening of the line is important. We c...

Since the world’s energy demands are growing rapidly, there is a constant need for new systems. One of cleanest, most abundant, and renewable natural resources available solar energy; therefore, development surfaces with high absorption radiation increasing. To achieve best efficiency, such coated spectrally selective coatings, which strongly influenced by pigments resin binders. Spectrally pai...