Title :
Channel characteristics of HF NVIS paths in northern Scandinavia
Author :
Jodalen, V. ; Lundborg, B. ; Jacobsen, B.
Author_Institution :
Norwegian Defence Res. Establ., Kjeller, Norway
Abstract :
HF is still the only practical means of communications for Rescue Services and Special Forces operating in Scandinavian mountainous terrain at typical distances of 60-200 km. Communication over NVIS (near vertical incidence skywave) paths is challenging due to interference from the groundwave, a low MUF and absorption of the lowest frequencies. Particularly at high latitudes the absorption can be severe. We present results from a propagation experiment over two NVIS paths in northern Scandinavia using DAMSON (Doppler and Multipath Sounding Network). The aim of our study is to investigate the correlation between the two paths concerning such quantities as availability, SNR, Doppler and delay spread
Keywords :
Doppler effect; HF radio propagation; correlation methods; delays; electromagnetic wave absorption; ionospheric electromagnetic wave propagation; multipath channels; noise; radio links; 60 to 200 km; DAMSON; Doppler and Multipath Sounding Network; Doppler spread; HF NVIS paths; Rescue Services; SNR; Special Forces; absorption; availability; channel characteristics; correlation; delay spread; distances; groundwave; high latitudes; interference; low MUF; mountainous terrain; near vertical incidence skywave; northern Scandinavia; propagation experiment;
Conference_Titel :
HF Radio Systems and Techniques, 2000. Eighth International Conference on (IEE Conf. Publ. No. 474)
Conference_Location :
Guildford
Print_ISBN :
0-85296-727-6
DOI :
10.1049/cp:20000186
