Effect of random ionosphere nonuniformities in the mean angles of emission and reception of single-jump low rays

The reasons of the earlier determined systematic excesses of the measured angles of 1 F 2 mode location over the calculated ones were studied. These excesses are shown to increase with growth of the width of beam of rays scattered by the location angle. The paper simple suggests a simple model based on the experimental data where the ionosphere random nonuniformities of small and large scales are given. Calculation of average angles of location using this model is shown to enable to improve concurrence with the measurement results