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W artykule przedstawiono wybrane mechanizmy dynamicznego zarządzania widmem głównie skupiając się na mechanizmach skoordynowanego dynamicznego dostępu do widma. Zastosowanie dynamicznego dostępu do widma pozwala zoptymalizować zarządzanie widmem elektromagnetycznym, które można traktować jako zasób odnawialny, ale rzadki (deficytowy). Dzięki zastosowaniu odpowiednich mechanizmów możliwe jest jego...
W niniejszym artykule przedstawiono charakterystykę szerokopasmowej łączności radiowej KF, wymieniono i opisano podstawowe wojskowe standardy odnoszące się do szerokopasmowej transmisji zakresu KF. Przedstawiono stan prac nad standardami i podstawowe zagadnienia dotyczące stosowania anten o małych gabarytach. Zaprezentowano wyniki symulacji i pomiarów szerokości pasma roboczego różnych typów anten...
Emerging of SDR technology gives new possibilities to developers of radio equipment They can implement new types of modulations and error correction mechanisms in the way not available till now. All that enables reaching higher data rates, longer ranges and in case of the narrowband radio enables using it in BMS system to deliver basic services like digitized voice and BFT. This article presents selected...
The widespread need for radio broadband services (such as video broadcasting) requires the use of radio that is capable to deliver such services. Unfortunately, beside benefits of using broadband radios (higher bit rates) there are also disadvantages, ie less range of operation in comparison to the narrowband radios range and less resistance to jamming (broadband operation results in increase of detection...
The article describes tests of efficiency of Web Single Sign On (SSO) solution used to provide authentication and authorization of user requests and responses during web portal invocation in a tactical radio network environment. The software solution was based on Fediz Apache CXF and WS-Federation standard configured with Passive Requestor Profile. There has been created tactical network environment...
Efficient realization of SOA services that support operations on the battlefield (e.g. Blue Force Tracking) imposes increasing demands on bandwidth and reliability of the radio channel. In the article we present different types of radio channel access that enable efficient utilization of scarce resource that is frequency band, which harden radio communications system to purposeful interference (continuous...
Modern coalition operations require efficient cooperation between partners of allied forces. They usually rely on their national systems equipped with software solutions supporting interoperability. Federation of systems built for the purpose of such operations assumes however independence of particular individual ones. In order to support efficient exchange of information between allies there are...
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