Single sensor source localization in a range dependent environment

• Autor(es): Jesus, S. M. ; Porter, M. B. ; Stephan, Y. ; Coelho, E. ; Rodríguez, O. C. ; Demoulin, X.
• Data: 2000
• Identificador Persistente: http://hdl.handle.net/10400.1/5341
• Origem: Sapientia - Universidade do Algarve
• Assunto(s): Source localization; Subspace methods; Shallow water; Broadband signals
• Tipo de Documento: Documento de conferência
• Idioma: Inglês

Descrição

Source localization with a single sensor explores the time spread of the received signal as it travels from the emitter to the receiver. In shallow water, and for ranges larger than a few times the water depth, the received signal typically exhibits a large number of closely spaced arrivals. However, not all the arrivals are equally important for estimating the source position since a number of them convey redundant information. Theoreticaly, identifying the non-redundant arrivals is feasible in a isovelocity range independent waveguide. In previous work, the number of non-redundant arrivals and the dimension of the data sample signal subspace have been related in a range-independent case. This paper addresses the problem of determining the number of significant arrivals for localizing a sound source over a range-dependent environment on the West coast of Portugal during the INTIMATE'96 sea trial.