108-113The problem of trans ionospheric radio waves propagating through a turbulent layer has been studied and analytical expressions for beam-wave wander and spread have been derived with the power-law spectrum of ionospheric irregularities by using phase screen model. The beam-wave spread has been found to be dependent, among other parameters, on the spectral index of the power-law spectrum. Some numerical computations have been carried out to estimate the possible beam-wave spread for SROSS
