Accession Number : ADA190469
Title : Sudden Ionospheric Disturbance Model Uncertainty Assessment.
Descriptive Note : Final rept. Oct 84-Sep 86,
Corporate Author : NAVAL OCEAN SYSTEMS CENTER SAN DIEGO CA
Personal Author(s) : Roy, T N ; Sailors, D B
PDF Url : ADA190469
Report Date : Jul 1986
Pagination or Media Count : 35
Abstract : The impact of a sudden ionospheric disturbance (SID) on HF propagation is discussed. The development of an empirically derived relationship (SIDGRID) to model this impact is presented. The SIDGRID model compared to 198 observed sounder data points. For distances less than 1500 km, the short-range prediction error was 0.5 MHz and in 95% of the tests the long-range prediction error was less than or equal to 2.0 MHz. Current FORTRAN and BASIC implementations of the model are given in Appendices C and D.
Descriptors : *IONOSPHERIC DISTURBANCES, *IONOSPHERIC MODELS, *PREDICTIONS, *SOUNDING, DATA BASES, ERRORS, FORTRAN, HIGH FREQUENCY, LONG RANGE(TIME), PROPAGATION, SHORT RANGE(DISTANCE), SHORT RANGE(TIME)
Subject Categories : Atmospheric Physics
Radiofrequency Wave Propagation
Distribution Statement : APPROVED FOR PUBLIC RELEASE