Three-dimensional underwater acoustical imaging and processing

Trucco, A.; Palmese, M.; Fusiello, Andrea; Murino, Vittorio

doi:10.1007/978-1-4757-3617-5_8

Cited by 2 publications

(1 citation statement)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compared with underwater optical imaging, UAI has the advantage of further visibility distance because of less acoustic transmission loss [2,3]. Nowadays, UAI becomes more useful in observing, recognizing or classifying underwater objects [4,5]. In UAI, a large-scale transducer array is usually developed to form a large number of beams, so a fast and efficient beamforming algorithm is needed for realtime and high-quality acoustic imaging [6,7].…”

Section: Introductionmentioning

confidence: 99%

Genetic Algorithm for Sparse Optimization of Mills Cross Array Used in Underwater Acoustic Imaging

Teng

Yang

et al. 2022

JMSE

View full text Add to dashboard Cite

Underwater acoustic imaging employs a special form of array which includes numerous transducer elements to achieve beamforming. Although a large-scale array can bring high imaging resolution, it will also cause difficulties in hardware complexity and real-time application. In this paper, in order to reduce the number of array elements, a sparse optimization for Mills cross is proposed, considering the elements’ distributions and weights design. The improved genetic algorithm is adopted to generate evolutions for sparse solution. In order to ensure effective convergence and successful evolution, relevant genetic operators are proposed, including appropriate population coding, correct fitness function, reasonable selection strategy and efficient two-point orthogonal crossover, among others. Essentially, a satisfied sparse solution is a result of mutual restraint between array elements’ survivals and their weights. The simulations reveal that our sparse cross array decreases the number of elements by 8.25% compared to the conventional Mills cross multiplicative array, while keeping the advantages of narrow main lobe width and low sidelobe level. Improved genetic algorithm is an effective method for the underwater acoustic imaging array to implement the sparse optimization.

show abstract

Section: Introductionmentioning

confidence: 99%

Genetic Algorithm for Sparse Optimization of Mills Cross Array Used in Underwater Acoustic Imaging

Teng

Yang

et al. 2022

JMSE

View full text Add to dashboard Cite

show abstract

Arqueología marítima forense: pensamiento crítico, teoría y geofísica marina como herramientas clave para la búsqueda de personas desaparecidas en contextos sumergidos

Herrera,

Gómez Goyzueta,

Jiménez

2023

View full text Add to dashboard Cite

Este artículo discute las consideraciones teóricas, metodológicas y de instrumentación con las que es posible y necesario trabajar para auxiliar en la detección de restos humanos en contextos sumergidos de una manera científica, sistemática, y reproducible. Esta labor es también copartícipe del propósito de hacer de la arqueología una herramienta para ayudar a cerrar procesos profundamente dolorosos entre las familias que han sufrido pérdidas en el grave contexto de desapariciones forzadas en el México actual. Se consideran como parte del análisis los siguientes elementos clave: 1) la necesidad de un desarrollo explícitamente teórico en arqueología que incorpora estrategias para la resolución de preguntas, tal como es el caso de la arqueología procesual; 2) el análisis de las alteraciones tafonómicas que afectarán a un cuerpo humano y que se presentan en el escenario de un contexto sumergido, y, 3) el desarrollo de una metodología de prospección que incorpora tecnologías de punta de lanza en la arqueología marítima contemporánea, con énfasis en instrumentación de posicionamiento, geofísica marina, fotogrametría, robótica y buceo técnico y científico.

show abstract

Three-dimensional underwater acoustical imaging and processing

Cited by 2 publications

References 34 publications

Genetic Algorithm for Sparse Optimization of Mills Cross Array Used in Underwater Acoustic Imaging

Genetic Algorithm for Sparse Optimization of Mills Cross Array Used in Underwater Acoustic Imaging

Arqueología marítima forense: pensamiento crítico, teoría y geofísica marina como herramientas clave para la búsqueda de personas desaparecidas en contextos sumergidos

Contact Info

Product

Resources

About