Análise comparativa entre predição e medidas reais de cobertura de sinal de TV digital em Macapá/AP

Abstract

The arrival of digital television (TVD) was accompanied by a major challenge in it’s implementation: the difficulty of guaranteeing service in an entire area that analogue broadcasters served. Because of this, the television entities aim to comply with the legal requirements of their transmissions, as well as the National Telecommunications Agency (Anatel), in which it exercises the role of supervising the service of most of the location where the transmitting station is located. Justified by the social importance that TV plays in Brazilian society, this work aims to carry out a comparative analysis between real field measurements of the coverage area of TV Equinócio, affiliated with Rede Record in Macapá-AP, with coverage predictions obtained through a software and a mathematical model. To generate as predictions, an ITU-R P.1546-5 propagation model was used, described in the step by step of ANNEX A, in addition to the ICS Telecom software, which deals with an Anatel tool aimed at broadcasting services. Thus, with the aid of a spectrum analyzer and an antenna, it was possible to collect the real power values, in dBµV/m, of the signal transmitted in several points in the urban area of the municipality and in some more distant points. The results presented show that the predictions, of the software and of the model, have the same behavior as that verified in the field, presenting satisfactory results and proving the effectiveness of these models, in addition to the reliability of software and programs designed to predict coverage of Digital TV, as well as other applications in Telecommunications