10 research outputs found
Underwater Cultural Heritage as an Engine for Social, Economic and Cultural Development. State of Research at the University of Cadiz (Andalusia, Spain)
Get PDFPublic access to underwater and maritime cultural heritage has proven to have a very
positive effect on the local economy. This type of heritage is very attractive for the cultural tourism
sector in general and for active and diving tourism. The Nautical and Underwater Archeology Line
of the University of Cadiz, within the framework of the TIDE Project (Interreg Atlantic Area) and
Herakles Project (FEDER-UCA18-107327) have been working on the enhancement of maritime and
underwater heritage through the application of new technologies. In this paper, we will present the
advances in the project in the Strait of Gibraltar, based on the first phase of scientific analysis and on
the definition of a common working methodology that has resulted in a toolkit for the development
of tourism activities linked to the MCH and UCH. Pilot activities under development are focused
on accessible underwater heritage routes, VR applications to create Dry Dive experiences and the
streaming of underwater archaeological works, thanks to a bottom-surface acoustic communication
buoy. Results show that these types of outreach solutions and, by extension, of tourism application,
must be preceded by a rigorous archaeological research process, a study of the target audience
and the evaluation of the carrying capacity of the sites, to avoid falling into the mercantilisation or
deterioration of the UCH. On the other hand, virtual or indirect access solutions are very useful, but
always through the correct interpretation of the heritage.This research was funded by TIDE, or Atlantic Network for Developing HistoricalMaritime Tourism; EAPA_630/2018 is an Interreg funded project. Thiswork has been co-financed by the 2014-2020 ERDFOperational Programme and by theDepartment of Economy, Knowledge, Business andUniversity of the Regional Government of Andalusia. Project reference: FEDER-UCA18-107327. This work has been co-financed by II Convocatoria de Ayudas Para El Fomento de Proyectos Universidad-Empresa Fundacion Campus Tecnologico de Algeciras. Project Reference: FCTA2020-07
Aplicación de la tecnología WiMAX a entornos marinos
Get PDFWireless communications above the sea surface are affected by phenomena like shadowing and multipath. The system of buoys used in some scientific marine researches has to send and receive information by means of wireless communications, e.g. for water monitoring purposes. They usually use mobile telecommunication networks, when the system is inside coverage, or satellite links, with low speed data transmission. The VHF (Very High Frequency) systems have appeared as an alternative to the previous ones, but they present some problems that limit its performance. A research project between the universities of Cadiz and Abdelmalek Essaâdi tries to advance in the development of new technological applications to improve the marine communications. Particularly, the 5.8 GHz band (WiMAX unlicensed band in Spain) is used and a propagation channel measurement campaign in maritime environments was carried out to study a link between a buoy and a ship. It applies to conditions not well-covered by similar studies. This work is helpful to deploy WiMAX systems offshore
Integrated navigation systems by means of wireless local area networks
No full textThis thesis explains the methodology used in the design of Wireless Local Area Networks (WLANs) and puts forward one particular configuration suitable for Integrated Navigation Systems (INSs).The choice of the Extremely High Frequency band (EHF) is based on two fundamental reasons. Firstly, EHF waves range from 30 to 300 GHz, which makes possible high data transmission rates (up to 155 Mbps). Secondly, EHF waves suffer both high attenuation and low diffraction when they are propagating through indoor channels, which provides a good isolation and allows using narrow aperture angles, respectively.Both special modulation and spatial diversity techniques are needed to cancel the multipath effects mainly due to wave reflections as the wave is propagating through the indoor channel.A typical configuration for this kind of systems consists of a set of base stations, uniformly distributed through the ship, installed on the ceiling. Each base station defines a picocell through several data terminals are linked by radiowaves.The design of INSs based on WLANs is proposed as a novel research field whose results can reduce the installation and maintenance costs of these systems aboard ship. Experimental results and empirical models must be previously obtained.305 p
