نتایج جستجو برای: refractivity index
تعداد نتایج: 396554 فیلتر نتایج به سال:
The ITU Radiocommunication Assembly, considering a) that for the proper planning of terrestrial and Earth-space links it is necessary to have appropriate calculation procedures for assessing the refractivity effects on radio signals; b) that procedures have been developed that allow the calculation of some refractive propagation effects on radio signals on terrestrial and Earth-space links, rec...
The Global Positioning System/Meteorology (GPS/MET) Program was established in 1993 by the University Corporation for Atmospheric Research (UCAR) to demonstrate active limb sounding of the Earth's atmosphere using the radio occultation technique. The demonstration system observes occulted GPS satellite signals received by a low Earth orbiting (LEO) satellite, MicroLab1, launched April 3, 1995. ...
(Part Ib) Transmissible Spongiform Encephalopathies, and in particular, Chronic Wasting Disease are devastating neuropathologic diseases caused by a unique, but unknown infective agent with high degree of refractivity to ordinary disinfectant and sterilization procedures. Amazingly, a fully described comparison of 28 TSE causal agent characteristics match remarkably well with 28 documented char...
The trapping layer refers to the atmospheric with vertical gradient of refractivity less than −157 N-Units/km or modified 0 M-unit/km, which has a significant impact on radar and radio communication systems. Based COSMIC other occultation data, we show statistical characteristics global during 2005–2020.The results that occurrence rate layers is mainly concentrated between 50°S 50°N, higher occ...
The fading characteristics during meteorological conditions such as rain and variations of the atmospheric refractivity for Line-of-Sight (LOS) Multiple-Input-Multiple-Output (MIMO) channels are investigated. Measurements have been performed on two prototype LOS-MIMO links in Gothenburg, Sweden. It is showed that rain can be modelled as a fully correlated attenuation of the received MIMO signal...
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