Model Of Ballistic Missile Plume Disturbance On Ionosphere And Impact On Radar Echo Evaluation

After the combustion product of ballistic missile escapes from the vent(which is the plume),it will interact with the materials in the ionosphere,causing disturbance to the background ionosphere.Neutral gas components(such as H₂O)in the plume can cause a sharp decay of electron density in the ionosphere and even form artificial ionospheric cavity.According to this feature,skywave over-the-horizon radar can be used for targeted monitoring to achieve early warning,greatly improving the response time of the defense system.By studying the propagation path of electromagnetic waves in the ionosphere,the influence of ionospheric disturbance on the sky-wave over-the-horizon radar is analyzed.Using fast and high-precision 3D ray tracing to numerically simulate its path,and analyze the effects of different frequency electromagnetic waves and different background ionospheric parameters on radar operation,it can provide some theoretical guidance for the detect of sky wave radar.This article has mainly completed the following work:1.This paper summarizes the types of ballistic missile propellants,combis the development of chemical propellants,analyzes the mechanisms of three different methods of detecting ballistic missiles and selects the most suitable means for current equipment;2.This paper studies the theoretical model of the combustion process and combustion of solid propellant.The mechanism of radiation bright temperature is analyzed and the radiation brightness temperature of plume is calculated and compared.3.This paper establishes the model of artificial ionospheric void generated by ballistic missile plume disturbing ionosphere,and different initial values are set to simulate and compare it.4.This paper uses the three-dimensional ray tracing method to simulate the propagation path of electromagnetic waves in artificial ionospheric voids to study the influence of ionospheric disturbance on electromagnetic waves of radar.