Analysis And Research Of Impact Of Blackout On Radio Signals

High-speed aircraft reentry dense atmosphere and intense air friction, extrusion, so that the air temperature of the vehicle around a sharp rise, is the ionization of the air and the aircraft surface heat-resistant materials, the formation of the plasma sheath wrapped around the aircraft, making the radio tracking measuring device receives the signal attenuation, or even interrupted, this is the so-called "blackout". In-depth study on the phenomenon of the "blackout" in the TT&C system of radio signals, on the basis of theoretical analysis, by digging a large number of historical data, its processing and analysis, research blackout of radio signals impact on the blackout law of the various tasks are summarized. Blackout is important on the radio measurement and control system in the TT&C. In this paper, the main contents of the following aspects:(1)Blackout of radio signals from the theoretical analysis of the plasma under different conditions of the radio signal absorption, reflection caused by attenuation, anti-jamming capability of the communication system analysis.(2) Plasma simulation, access to radio measurement system measurement data processing and analysis to verify the effect of plasma on the signal attenuation of several commonly used radio measuring equipment.(3)A large number of historical measurement data mining, processing, analysis, and summarizes some of the laws of the black barrier formation.