Optimal antenna-height design for improved capacity on over-water radio links affected by tides

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2020

Autores

Gaitan, MG (Autor) Outra; Santos, PM (Autor) Outra; Pinto, LR (Autor) Outra; Luis Almeida (Autor) FEUP

Ata de Conferência Internacional

Título: GLOBAL OCEANS 2020: SINGAPORE - U.S. GULF COAST

Global OCEANS Singapore - U.S. Gulf Coast Conference

ELECTR NETWORK, OCT 05-30, 2020

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 1 Citação

Outras Informações

ID Authenticus: P-00T-VP5

DOI: 10.1109/ieeeconf38699.2020.9389132

Abstract (EN): Modern observation systems can be composed by heterogeneous entities (e.g., buoys, USVs, UAVs, on-shore sensors, etc.) that rely on dependable communications for coordination and data collection, often provided by over-water radio-frequency (RF) links. In tide-affected water bodies, RF links at a fixed height from the shore can experience the so-called tidal fading, a cyclic time-varying tide-induced interference. To mitigate it, the classical space-diversity reception technique (i.e., the use of two or more receiver antennas positioned at different heights) is often applied, commonly combined with the consideration of having one of the antennas at the largest possible height. Yet, this approach does not always ensure the best performance. In this work, we focus on static over-water links of short-to-medium-range distances that use antennas installed at a few meters above surface. We leverage the geometrical basis of the two-ray propagation model to investigate the optimal single-antenna height design that minimizes overall average path losses over a given tidal range. We then extend this analysis to incorporate a second receiver antenna and identify its optimal antenna height. Analytical results show that our method considerably outperforms the more classical approach, thus enabling superior (average) link capacities.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7