Skip to main content
Ir a la página de inicio de la Comisión Europea (se abrirá en una nueva ventana)
español es
CORDIS - Resultados de investigaciones de la UE
CORDIS
Contenido archivado el 2024-04-19

Long range acoustic communications

Objetivo



The main objective of the project is to design, build and check a prototype of a high performance underwater acoustic communication system capable of operatin at ranges up to 100 km in deep waters, for environment control and oceanographi survey applications, as an alternative to systems using radio link satellite transmission.

The project is built around three lines:

- Medium modelling
- Signal processing
- Experiments in the western Mediterranean Sea.

Several signal coding techniques will be investigated and their performances accessed by use of models of the acoustic channel. Particular emphasis will be put on the necessity to minimize the energy per bit for reliable transmission. Due to the limited energy available and the fact that the considered systems ar supposed to work for long periods of time, signal to noise ratio is expected to be low; furthermore, due to long ranges involved, the propagation channel will have large time spread and fluctuations. Therefore, novel promising techniques like dual link transmission allowing feedback from the receiver to the transmitter for optimization of data coding depending of the channel characteristics will be considered.

Predictions of channel time and frequency spreading as well as background noise will be achieved by modelling, particular attention will be given to coupling physical models of the ocean to acoustic propagation models; these computer models could be considered as a set of tools and could be made available for instrument designers.

Two experiments are scheduled: the first one at the beginning of the project in order to get a good feeling of the various problems to be faced and the second one after the optimal system is designed and realized in order to validate the concepts.

The main objective of the project is to design, build and check a prototype of a high performance underwater acoustic communication system capable of operating at ranges up to 100 km in deep waters, for environment control and oceanographic survey applications, as an alternative to systems using radio link satellite transmission.

The project is built around three lines:

Several signal coding techniques will be investigated and their performances accessed by use of models of the acoustic channel. Particular emphasis will be put on the necessity to minimize the energy per bit for reliable transmission. Due to the limited energy available and the fact that the considered systems are supposed to work for long periods of time, signal to noise ratio is expected to be low; furthermore, due to long ranges involved, the propagation channel will have large time spread and fluctuations. Therefore, novel promising techniques like dual link transmission allowing feedback from the receiver to the transmitter for optimization of data coding depending of the channel characteristics will be considered.

Predictions of channel time and frequency spreading as well as background noise will be achieved by modelling, particular attention will be given to coupling physical models of the ocean to acoustic propagation models; these computer models could be considered as a set of tools and could be made available for instrument designers.

Two experiments are scheduled: the first one at the beginning of the project in order to get a good feeling of the various problems to be faced and the second one after the optimal system is designed and realized in order to validate the concepts.

Ámbito científico (EuroSciVoc)

CORDIS clasifica los proyectos con EuroSciVoc, una taxonomía plurilingüe de ámbitos científicos, mediante un proceso semiautomático basado en técnicas de procesamiento del lenguaje natural. Véas: El vocabulario científico europeo..

Para utilizar esta función, debe iniciar sesión o registrarse

Programa(s)

Programas de financiación plurianuales que definen las prioridades de la UE en materia de investigación e innovación.

Tema(s)

Las convocatorias de propuestas se dividen en temas. Un tema define una materia o área específica para la que los solicitantes pueden presentar propuestas. La descripción de un tema comprende su alcance específico y la repercusión prevista del proyecto financiado.

Convocatoria de propuestas

Procedimiento para invitar a los solicitantes a presentar propuestas de proyectos con el objetivo de obtener financiación de la UE.

Datos no disponibles

Régimen de financiación

Régimen de financiación (o «Tipo de acción») dentro de un programa con características comunes. Especifica: el alcance de lo que se financia; el porcentaje de reembolso; los criterios específicos de evaluación para optar a la financiación; y el uso de formas simplificadas de costes como los importes a tanto alzado.

CSC - Cost-sharing contracts

Coordinador

Thomson Marconi Sonar SAS
Aportación de la UE
Sin datos
Dirección
525,Route des Dolines
06903 Sophia Antipolis
Francia

Ver en el mapa

Coste total

Los costes totales en que ha incurrido esta organización para participar en el proyecto, incluidos los costes directos e indirectos. Este importe es un subconjunto del presupuesto total del proyecto.

Sin datos

Participantes (4)

Mi folleto 0 0