Research on Improving GPS Communication Performance in Near Space by Additional Magnetic Field
Abstract：Aimed at the communication blackout problem that a hypersonic aircraft passes through near space atmosphere,a method that an additional magnetic field is used to change electromagnetic environ-ments of plasma sheath is proposed.According to the data provided by radio attenuation measurement C (RAM C)voyage experiment,a model of plasma sheath is established.This paper analyzes the magnetic field intensity and parameters of plasma including plasma thickness,plasma density,plasma collision fre-quency to get the reflection and attenuation properties of GPS wave propagation in plasma sheath by nu-merical calculation.Comprehensive analysis shows that additional the magnetic field around aircraft can ef-fectively solve the"communication blackout"problem especially directed against GPS signal in low fre-quency.When magnetic field intensity is over 2 T,the transmission attenuation values of GPS signal in plasma sheath are all 5 dB below.The communication state is perfect.
Keywords：magnetizationGPSPlasmacommunication blackout
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 23-27 )