Using High Frequency Propagation to Calculate Basic Maximum Usable Frequency

2019/08/05 by Israa Abdualqassim Mohammed Ali, Ali, Israa Abdualqassim Mohammed
Physics and Astronomy · #FOS: Physical sciences #Space Physics (physics.space-ph) #physics.space-ph

paper · pdf · doi:10.48550/arxiv.1908.01836

17 pages, 9 figures

arxiv created 2019/08/05 · arxiv updated 2019/08/07

Abstract

A comparison between observed (obs.) digital ionospheric sounding data and predicted (pre.) using International Reference Ionosphere (IRI) model for critical frequency (foF2) and Basic Maximum Usable Frequency (BMUF) of ionospheric F2-Layer has been made. A mid-latitude region selected for this research work by using data from station Wakkanai (45.38^o N, 141.66^o E). This study included 12 monthly median data from year (2001, R₁₂=111) selected for high Sunspot number (SSN) and years for low SSN (2004, R₁₂=44) and (2005, R₁₂=29). Frequency parameters foF2 reveals that there is a good correlation between observed and predicted except for January of years 2001 and 2004, and BMUF revealed that there is a good correlation between observed and predicted for years of low SSN and all months except in month 1, 9 and 12 of year 2004, for year 2001 of high SSN there is a bad correlation. A correction factor as a function of time used from fitting technique to correct the predicted value with observed value of BMUF for year 2001.

Related

• Statistics of Night time Ionospheric Scintillation Using GPS data at low latitude ground station Varanasi
• Diurnal variation of VLF signals
• Numerical modelling of VLF radio wave propagation through earth-ionosphere waveguide and its application to sudden ionospheric disturbances
• A GPS-based method to model the plasma effects in VLBI observations
• LdT: An indicator of ionospheric activity based on statistical distributions in GNSS-derived TEC rates of change