Measuring radiation values and optical parameters - sampling half-space in spherical coordinates and determining spectral distribution of solid angle elements

摘要

The method involves sampling solid angle elements of a half- space to be measured and performing spectral analysis. The sampling is carried out using spherical coordinates and the spectral distribution is calculated for each solid angle element, using a spectrum detected by an imaging receiver. The spectra are evaluated by equal-energy analysis, normalised V-lambda curves, or cosine/sine theta calculation of spherical coordinates. A spectrometer and mirror may be used which are rotatably fixed and coupled to a high resolution CCD line receiver. USE/ADVANTAGE - For measuring intensity, spatial distribution and time variation of daylight/solar radiation, e.g. in meteorology, or UV measurements in chemistry. Many parameters may be measured using single appts.