ESTIMATION OF THE EFFECTIVE EARTH RADIUS FACTOR (K-FACTOR) FOR PRECISE CALCULATION OF THE PATH PROFILE IN POINT-TO-POINT RADIO LINKS
ESTIMATION OF THE EFFECTIVE EARTH RADIUS FACTOR (K-FACTOR) FOR PRECISE CALCULATION OF THE PATH PROFILE IN POINT-TO-POINT RADIO LINKS
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DOI: https://doi.org/10.22533/at.ed.3174112412042
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Palavras-chave: Perfil de trayectoria radioeléctrica, radioenlace punto a punto LOS, primer elipsoide de Fresnel, altura de Torres para antenas.
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Keywords: Radio path profile, LOS point-topoint radio link, first Fresnel ellipsoid, tower height for antennas.
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Abstract:
The article addresses the estimation of the K-factor to achieve an accurate calculation of the radio path profile in lineof-
sight (LOS) point-to-point radio links. The radio path profile is essential to ensure the elimination of obstacles within the first Fresnel ellipsoid, through the precise placement of the antennas high above the Earth’s surface. This arrangement facilitates proper reception of the transmitted beams, which arrive at the receiving antenna from various paths, all
synchronized in phase with the direct lineof- sight beam. Additionally, the impact of the Earth’s atmosphere on radio frequency (RF) signals is analyzed, two approaches to calculate the K-factor are outlined, and the procedure for plotting the radio path profile is described.
- Luis Alejandro Iturri Hinojosa
- Gabriela Leija Hernández
- Daniel Rodríguez Saldaña