A study on the rain attenuation prediction model using effective permittivity

실효유전율을 이용한 강우감쇠 예측 모델에 관한 연구

  • 김혁제 (한국전자통신연구원 전자파공학연구실) ;
  • 조삼모 (한국전자통신연구원 전자파공학연구실)
  • Published : 1998.02.01


We calculated the wave attenuation due to rain using the effective permittivity of the air with raindrops. The effective permittivity depends on the complex permittivity of rain drop and the fractional volume occupied by the raindrops. We calculate the complex permittivity of rain drop and the raindrops' volume using Marshall-Palmer Rain drop size distribution. The rain attenuation calculated by effective permittivity is compared with the results of ITU rain attenuation model, and the two rain attenuation models have a very close agreement. The effetive permittivity model underestimates the rain attenuation under 50 GHz, and overestimate at the frequencies under 50 GHz copmpared with the ITU model.



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