Naslov
An Assessment of HF NVIS Radio System Reliability

Autori
Sumić, Dean ; Vlašić, Radovan

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
4th International Conference on Ports and Waterways POWA 2009 / Jolić, Natalija - Zagreb : Fakultet prometnih znanosti Sveučilišta u Zagrebu, 2009

ISBN
978-953-243-041-7

Skup
4th International Conference on Ports and Waterways POWA 2009

Mjesto i datum
Zagreb, Hrvatska, 10.09.2009. - 11.09.2009

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
HF NVIS radio system; radio link analysis; system reliability prediction

Sažetak
Reliable communications are basis for all emergency systems. For this purpose global standard for professional mobile radio communications known as TETRA is developed. That digital radio communication system is based on cell?s structure coverage zone of geographical area. If coverage zone includes well-indented coast and/or highland area system implementation can reach high costs. In that case, HF technique of Near Vertical Incident Skywave (NVIS) provides relatively cheap supplement or reserve. NVIS link range is between few tens to few hundreds of kilometers and it is practically independent of ground characteristics in coverage zone due to near vertical path. Assessment of HF NVIS link performance by means of transmission errors is performed by technique of communication link analyses. Analyses result is link budget which includes transmitting and receiving resources, sources of noise, interference and signal attenuation and effects of other processes along link. Link budget is implemented, together with other modeling techniques, in standard procedure of HF radio system reliability prediction. Analysis shows that performances of HF NVIS radio should be concerned when planning emergency communication system.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika, Tehnologija prometa i transport

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