Data/hora: 13/06/2024 00:42:48

Provedor de dados: 	5	
País: 	France	
Título: 	Application du laser a la detection sous-marine: Experimentation d'un imageur	
Autores: 	Kervern, G; Legall, A.	
Data: 	1990-12	
Ano: 	1990	
Palavras-chave: 	Optics; Lasers; Detection; Acoustics; Underwater cameras; Sonar imagery; Imaging techniques; Underwater photography; Marine technology; Side scan sonar.	
Resumo: 	Nowadays, side-looking sonar is the only equipment able to carry out long-range underwater imaging. The use of optics is limited to short-range identification by means of conventional video-cameras. However, active optical systems (lidars) manufacturing, using a blue-green laser, will enable optics to hold its place in the field of long-range underwater imaging. After a short comparison between acoustics and optics in underwater detection and a description of the proper features of underwater optical propagation, we present the different conceivable imaging principles and propose a method to determine their performances. The experimentations described concern a lidar imager mock-up using one of the imaging principles proposed. The pictures obtained deal with specular and lambertian targets.	
Tipo: 	Text	
Idioma: 	Francês	
Identificador: 	http://archimer.ifremer.fr/doc/1990/acte-1139.pdf	
Editor: 	Actes de colloques. Ifremer. Brest [ACTES COLLOQ. IFREMER.]. 1991	
Relação: 	http://archimer.ifremer.fr/doc/00000/1139/	
Formato: 	application/pdf