Sensitivity analysis of temperature-emissivity separation method commonly applied to hyperspectral data to various sources of errors is performed in this paper. In terms of resulting errors in the process of retrieving surface temperature, results show that: (1) Satisfactory results can be obtained for heterogeneous land surfaces and retrieval error of surface temperature is small enough to be ...

Based on the analysis of three main factors involved in the relative radiometric calibration for optical sensors, namely: the number of radiance level; the number of measurements at each level; and the radiance level grouping method, an optimal strategy is presented in this paper for relative radiometric calibration. First, the maximization to the possible extent of either the number of the rad...

As there are few in situ observations in and around Antarctica, it is important to assess how assimilating remotely-sensed observations, such as satellite-observed radiances, can fill this observational gap. Thus, a month-long study was conducted over the Antarctic to examine forecast and analysis sensitivity to the assimilation of microwave radiance measurements. Several experiments were confi...

This paper reports on a preliminary experiment to undertake in-flight radiance calibration validation (cal-val) of the NERC CASI. The approach involved comparing CASI radiance values of a single, wellcharacterised target with synchronised measurements of target radiance obtained at the ground with a calibrated spectroradiometer. CASI data were obtained at two altitudes: 853m and 3109m, in spati...

Having in mind the high complexity of the sky radiance distribution, the Commission of the European Communities, in the frame of the Solar Energy R&D in the European Community Programme, developed among other related fields of research a clear sky radiance model. This model, the so-called EC-Model, was intended for the estimation of the diffuse irradiance falling on an inclined surface by integ...

We describe and experimentally validate an end-to-end simulation of a digital camera. The models the spectral radiance 3D-scenes, formation irradiance by multi-element optics, conversion to values image sensor. quantify accuracy comparing real simulated images precisely constructed, three-dimensional high dynamic range test scene. Validated software camera can accelerate innovation reducing man...

In this study the five-phase method and a parallelized invocation of evalglare has been used, to evaluate performance microstructure Low-E window w/wo external blind, in terms glare. The first part results investigates how Bidirectional-Scattering-Distribution-Functions, BSDF, aBSDF (Aperture BSDF) properties bias predicted glare through microstructure, linking BSDF rank saturation resolution c...

This work introduces RadVR, a virtual reality tool for daylighting analysis that simultaneously combines qualitative assessments through immersive real-time renderings with quantitative physically correct simulations in 6DOF environment. By taking 3D building model material properties as input, RadVR allows users to (1) perform physically-based via Radiance, (2) study sunlight different hours-o...

In the supplementary material, we provide additional results and discussion of several parts of the main paper. 1. Effects of Non-Idealities In this section, we show simulations for studying the effects of non-idealities of the wedge geometry on edge radiance profiles. These simulations complement the discussion fo Section 4 of the main paper. Figures 1 and 2 show simulations for the effect of ...