High elevation angle propagation results, applied to a statistical model and an enhanced empirical model

The results of a recent narrowband propagation experiment at high elevation angles have been further analysed to determine fir coefficients for the model proposed by Lutz et al. Results for the suburban and wooded environmental categories for elevation angles greater than 60 degrees are reported. An empirical model for L and S bands covering elevation angles from 20 to 80 degrees has been developed. The model combines the empirical roadside shadowing model, and the empirical fading model derived from the results of a narrowband propagation campaign, and improves the existing CCIR model.