Statistical Analysis of Radio Frequency Interference (RFI) Caused by Solar Radiation During Wet and Dry


  • Marhamah Mohd Shafie
  • Marhamah Mohd Shafie
  • Roslan Umar Universiti Sultan Zainal Abidin
  • Nor Hazmin Sabri Fakulti Sains Sekitaran Marin Umt
  • Nor Hazmin Sabri Fakulti Sains Sekitaran Marin Umt



Statistical Analysis, Radio Frequency Interference, Solar Radiation, Astronomical Sources, Wet and Dry seasons


This paper describes a effect of solar radiation and radio signal within ultra-high frequency (UHF), which statistically deduced using Spearman correlation method. The observation was done in several location including Balai Cerap KUSZA (BCK) during dry and wet season. Solar radiation one of meteoparameters that measured simultaneously using a weather station. This data was analysed and compared to power level (radio signal) in dBm during wet and dry seasons. Findings show that telecommunication services occupy the UHF band. Hence, it can be concluded that, there are still some frequencies available for radio astronomical sources including that below 400 MHz. This allocation is suitable for solar observation, Jupiter observation, continuum observation, solar wind observation, as well as pulsar and deuterium observation and VLBI application. Statistical analysis indicate that solar radiation was significantly prominent during peaks of 382.5 MHz, 1800.0 MHz and 2160.0 MHz. It is largely related with a correlation of 0.6252, 0.6769, 0.5965 during the wet season and only small and moderate correlation at all peaks during the dry season. This important information could be a significant contribution for radio astronomers when trying to identify the best allocation for observing radio astronomical sources in the future.


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