Abstract
Troposphere is the lowest layer of the atmosphere where most weather phenomena occur. It extends about 16 km above the mean sea level (MSL) at the equator and 5 km over the poles. The irregularities in temperature, humidity and air density bend, diverse and scatter radio waves [1]. Some of the scattered energy may connect far away radio stations situated beyond line-of-sight (LOS), at the frequency range from VHF to microwave. Troposcatter communication makes use of these physical phenomena to provide beyond LOS links. It attracted a large amount of research and engineering effort from the 1950’s to 1970’s [2], and played an important role in military and civil communications before satellite communications won popularity.
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