Data/hora: 06/06/2024 13:30:41

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