Radio propagation for the Amazon Region considering the river level

• Published in: 2019 Workshop on Communication Networks and Power Systems (WCNPS) pp. 1 - 4
• Main Authors: da Silva, Thiago, Costa, Alaim, da Silva, Diego, Castro, Leslye, Araujo, Jasmine, Cavalcante, Gervasio
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.10.2019
• Subjects: Mixed Path; radio propagation; river level
• DOI: 10.1109/WCNPS.2019.8896281

This paper describes the radio propagation typically founded in Amazon cities. Two cases of study are presented, in the cities of Belém and Marabá, which have the Guajará Bay and Tocantins river, respectively. Mixed Path model is used in order to calculate the total electric field in the receiver. Three rays are considered in the model. Since the river level changes along the day, the reflected ray over the water can be added in phase or out of phase, then it influences significantly the receiver power. Genetic Algorithms (GA) are used to choose the best antenna height to obtain the maximum receiver power of a Digital TV signal considering the variations of the receiver level. Considering houses on the border of the river in Belém, the optimal height for the receiver antenna was 11 m and for Marabá was 4 m.