Browsing by Author "Bråten, Lars Erling"
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Deployerbar WiMAX 2,3 GHz i skog : propagasjonsmålinger
Voldhaug, Jan Erik; Bråten, Lars Erling; Sander, Jostein (2009)Som en følge av innføring av nettverksbasert forsvar, oppstår et behov for utveksling av langt større informasjonsmengder innad i og mellom Forsvarets plattformer og avdelinger enn noen gang tidligere. For å møte dette ... -
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. ... -
Medium access for narrowband wireless ad-hoc networks - requirements and initial approaches
Bråten, Lars Erling; Hauge, Mariann; Voldhaug, Jan Erik; Øvsthus, Knut (2008)The initial requirements for a tactical military mobile ad-hoc network are discussed and implications on the design of the link layer for a narrowband system have been investigated. The main focus is on medium access ... -
Modelling battle command with context-based reasoning
Løvlid, Rikke Amilde; Alstad, Anders; Skogsrud, Guro; Bruvoll, Solveig; Mevassvik, Ole Martin; Bråten, Lars Erling (2013-08-27)An important aspect of simulation based training is the need for realistic computer generated forces. In typical systems for computer generated forces the entities can be instructed to perform simple tasks like “move ... -
Planned and early results of low elevation angle measurements at Ka-band from two projects in Norway
Bråten, Lars Erling (2013-03-15)Geostationary satellite fixed communication services for high latitude and mostly maritime environment are increasingly important for Norway and the regions in the high north in general. Although measurement results have ... -
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 ... -
Subnet Relay - a mobile wireless ad-hoc network
Bråten, Lars Erling (2007)Subnet relay (SNR) is a realisation of a mobile narrowband ad-hoc network produced by Rockwell Collins Government Systems Canada. The product is mainly developed for maritime users providing Internet protocol connectivity ... -
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 ... -
WiMAX ytelsesmålinger i skogsterreng
Voldhaug, Jan Erik; Sander, Jostein; Bråten, Lars Erling (2008)Det er et behov for økende overføringskapasitet til brukere av trådløse kommunikasjonssystemer, også i Forsvarets taktiske avdelinger. Dette behovet kan trolig til en viss grad dekkes ved bruk av nye sivile mobile ...