Simulation Study of Digital Spatial Processing in Conditions of Tropospheric Propagation of Radio Waves

In the paper the problem of using antenna arrays with digital spatial processing of signals that have passed through the layers of the troposphere has been studied. This phenomenon occurs in the lower layers of the atmosphere due to the difference in refraction index. As a result, the electromagnetic wave propagates inside the so-called tropospheric waveguide. However, these kinds of waves can be attenuated significantly. Digital antenna arrays can be used in order to gain the signals of the centimeter wavelength. The digital antenna arrays and signals transmitted through a tropospheric duct have been simulated in the paper. The simulation of a waveguide which the refraction index is a simple surface has been carried out. The spatial pseudospectrum and radiation pattern for cylindrical array have been obtained.