01544oam 2200433 450 991071713840332120220218083709.0(CKB)5470000002528833(OCoLC)1295223304(OCoLC)995470000002528833(EXLCZ)99547000000252883320220204d1991 ua 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierGround-based observations in support of the ACTIVE satellite mission final report /Frank T. Berkey[Washington, D.C.] :[National Aeronautics and Space Administration],1991.1 online resource (ix, 102 pages) illustrationsNASA/CR ;190125"1 January 1990 - 30 April 1992."Includes bibliographical references (pages 99-102).Ground-based observations in support of the ACTIVE satellite mission Gravity wavesnasatElectrical engineeringnasatIonospheric propagationnasatGravity waves.Electrical engineering.Ionospheric propagation.Berkey Frank T.1416726United States.National Aeronautics and Space Administration,GPOGPOGPOBOOK9910717138403321Ground-based observations in support of the ACTIVE satellite mission3522978UNINA