A Research on Communications Blackout Problem in Ka Band by Relay Method
WEN Zhijun
CHEN Changxing
LING Yunfei
ZHOU Tianxiang
Abstract：To solve the reentry spacecraft communications blackout problem,this paper establishes a uni-form plasma sheath model of reentry spacecraft on windward and leeward respectively in light of experi-ment data like ARD,and analyzes the effects of frequency parameters such as the thickness,electron den-sity and plasma collision of plasma sheath of reentry spacecraft on windward and leeward to the transmis-sion of Ka?band.The result shows that the transmission of Ka?band signals on leeward is significantly su-perior to that on windward,and the transmission of Ka?band signals on leeward increases by at least 88%, and the attenuation value decreases by at least 1 9 dB,compared to that on windward.This provides a theo-retical reference for researching the reentry spacecraft in communication problems.
Keywords：re?entrycommunications blackoutrelay methodtransmissionattenuation
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( 18-22 )