They serve as reference radiators for the calibration of detectors and radiance sources. Thermal radiation sources are advantageous for this purpose compared to other radiance sources such as lamps or LEDs because they possess a continuous spectrum of the emitted spectral radiance, which, for blackbody...
thermal radiance of clear skieslongwave radianceTucson, ArizonaGaithersburg, MarylandSt. Louis, MissouripyrgeometerMeasurements of the longwave radiance of the sky were made during the summer of 1979 at Tucson, Arizona; Gaithersburg, Maryland; and St. Louis, Missouri. The global longwave radiation (...
Fig.2bshows a calibrated blackbody spectrum atTBB = 2000 K, matching the measured peak intensity of the cavity-graphene emitter atVDS = 13 V. From the radiation peak intensityI(ω0) of the graphene emitter at different bias voltages (VDS), it is possible to extract the electr...
How thermal radiance depends on these and other factors will be reviewed briefly in Sections 4.3.3–4.3.5 of this chapter. The dependence at a given wavelength on such factors can be qualitatively understood in terms of underlying physical processes: the emission, absorption, and scattering of ...
Radiation Radiation Processes Blackbody Radiation Surface Emission–Emissivity Surface Absorption, Reflection, and Transmission Kirchhoff's Law The Isotropically Diffuse, Gray Surface Determining Radiant Flux from a Surface Inferring Temperature from Thermal Radiation Important Factors Affecting Radiance Temperature ...
Canopy radiance in thermal infrared (TIR) band mainly comes from emission of canopy itself. This differs very much from the situation of visible and near i... LIU Qiang,CHEN Liangfu,LIU Qinhuo,... - 《遥感学报》 被引量: 40发表: 2003年 Measurement of Spectral Emissivity and Thermal Conduc...
This paper reports on the sensitivity of the brightness temperatures associated with radiances at the surface and the top of the atmosphere, simulated for the Imaging Infrared Radiometer (IIR) 8.7-, 10.6-, and 12-μm channels under ice cloudy conditions, to the optical and microphysical propertie...
Lambertian surfaces represent an important assumption when constructing thermal radiance transfer equations for remote sensing observations of ground surface temperatures. We identify the properties of ground surfaces in thermal infrared regions as Lambertian surfaces via field experiments. Because Lambertian surf...
1) the directional characteristics of thermal radiance 热辐射方向特性2) radiant directionality 热辐射方向性 1. The thermal radiant directionality of mixed pixel is very complicated under the influence of many factors. 混合像元的热辐射方向性由于受到多种因素的影响而变得极为复杂。 更多例句>> ...
Beijing 100101,China;3 School of Earth and Space Sciences,Peking University,Beijing 100871,China;4 Institute of Earthquake Science,China Earthquake Administration,Beijing 100036,China.Modeling diurnal variation of ground thermal radiance images using energy balance model and endmember composing technique[...