“…In order to analyse the effects of the evaporation duct on radar or communications, some models, such as AREPS and tropospheric electromagnetic parabolic equation routine [19], are used to predict the radio wave propagation characteristics. Meanwhile, some transhorizon propagation measurements have been made to obtain the signal strength (path loss) and to compare with the model predictions [1,2,5,6,8,9,16]. Normally, the measurements are in accord with the models.…”