Browsing by Author "Tjelta, Terje"
Now showing items 1-5 of 5
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Measured and modeled spatial rain rate correlation to improve the prediction method for satellite site diversity
Tjelta, Terje; Mamen, Jostein; Bråten, Lars Erling; Grotthing, Per Arne (2015)Rainfall rate varies both temporarily and spatially. Radio systems, where rain attenuation causes outages, may take advantage of this effect to increase the radio link or satellite link availability using diversity techniques. ... -
A Novel Method of Predicting Site DependentSpecific Rain Attentuation of Millimeter Radio Waves
Åsen, Walther; Tjelta, Terje (2003)There is a need for validation and improvement of propagation prediction methods for the safe design and operation of millimeter radio communication systems. At this frequency range, propagation related degradation is ... -
Predicting Near-Time Satellite Signal Attenuation at Ka-band Using Tropospheric Weather.
Grythe, Knut Harald; Bråten, Lars Erling; Rønning, Snorre Stavik; Tjelta, Terje (2018-12-10)There are satellite communication applications where it is desirable to predict near time (e.g. 2 to 12 h) propagation losses at Ka-band due to hydrometeor precipitation. We present results from a project investigating the ... -
Results of a Ka Band Campaign for the Characterisation of Propagation Conditions for SatCom Systems at High Latitudes
Tjelta, Terje; Rytír, Martin; Bråten, Lars Erling; Grotthing, Per Arne; Cheffena, Michael; Håkegård, Jan Erik (2017)Satellite services in the High North are utilized extensively for both communication purposes and for earth and climate observations. This paper presents results of two year measurements at 20 GHz and co-sited meteorological ... -
Three-Site Diversity at Ka-Band Satellite Links in Norway: Gain, Fade Duration and the Impact of Switching Schemes
Rytír, Martin; Cheffena, Michael; Grotthing, Per Arne; Bråten, Lars Erling; Tjelta, Terje (2017)Analysis of two years of measurements from a three-site satellite beacon diversity experiment in Norway is presented. The operating frequency was 19.68 GHz, elevation angles were between 21.7° and 22°, and site separations ...