Accession Number : ADA259743


Title :   Source Mechanisms and Radio Effects of Ionospheric Plasma


Descriptive Note : Annual rept. 1 Oct 91-30 Sep 92,


Corporate Author : BOSTON UNIV MA


Personal Author(s) : Lee, Min-Chang


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a259743.pdf


Report Date : 01 Nov 1992


Pagination or Media Count : 57


Abstract : Since October 1, 1991 experimental and theoretical research has been conducted by Prof. Min-Chang Lee and his students at BU and MIT. This research work is aimed at investigating the ionospheric plasma disturbances which can affect significantly the radio wave propagation in communications and space surveillance. The research topics which have been investigated include: (1) A source mechanism leading to the symmetric lower hybrid sidebands and a low- frequency mode in the upper atmosphere, (2) Characteristics of lightning-induced plasmas, (3) Radio wave-produced plasmas and effects on radio communications, (4) Plasma turbulence and formation of field aligned density fluctuations as ionospheric ducts.


Descriptors :   *PLASMAS(PHYSICS) , *LIGHTNING , *RADIO INTERFERENCE , *IONOSPHERIC DISTURBANCES , *RADIO WAVES , DENSITY , TURBULENCE , WAVE PROPAGATION , RADIO EQUIPMENT , UPPER ATMOSPHERE , ATMOSPHERES , LOW FREQUENCY , SIDEBANDS , COMMUNICATION AND RADIO SYSTEMS , ATMOSPHERIC SCATTERING , RADAR , SPACE SURVEILLANCE


Subject Categories : Atmospheric Physics
      Plasma Physics and Magnetohydrodynamics
      Radio Communications


Distribution Statement : APPROVED FOR PUBLIC RELEASE