Abstract:

A vehicle flying at high velocity in the atmosphere is surrounded by plasma sheath that affects the propagation of electromagnetic waves to and from the vehicle. This plasma sheath causes an important system operation problem known as communications blackout or radio blackout. The NavierStokes set of equations is solved, using the an advection upstream splitting method modified by the pressurebased weight functions(AUSMPW+). The electron density distribution is obtained and the amount of attenuation of the signal is calculated. According to the “electromagnetic window” schematic, the propagation of electromagnetic wave in an inhomogeneous magnetized medium is simulated. Simulation results show that the electron density decreases by increasing the magnetic intensity in the electromagnetic window and this method can decrease the attenuation of electromagnetic wave propagation in plasma sheath efficiently.