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| Leon, Pierre; Roland, Francois; Brignone, Lorenzo; Opderbecke, Jan; Greer, Jennifer; Khalighi, M. A.; Hamza, Tasnim; Bourennane, S.; Bigand, M.. |
| Silicon Photomultipliers (SiPMs) have recently been recognized as an interesting alternative to photomultiplier tubes (PMTs) thanks to their high sensitivity and time resolution. They can closely approach quantum-limited sensitivity in the detection of weak optical signals. Ifremer (French Research Institute for Exploitation of the Sea) and Institut Fresnel research lab have been investigating appropriate alternative solutions for PMTs in the context of underwater optical communications, and have for the first time used these new photodetector components for signal detection. A novel prototype of an optical modem based on SiPM receivers was realized with support from Osean SAS Co., a French instrumentation company. A number of lab experiments and sea... |
| Tipo: Text |
Palavras-chave: Optical communications; Underwater communications; Silicon photomultipliers; Photomultiplier tubes. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00435/54677/56495.pdf |
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| Leborne, Francois; Creuze, Vincent; Chemori, Ahmed; Brignone, Lorenzo. |
| This paper deals with the dynamic modeling and identification of an electrically driven underwater robot manipulator. The proposed study includes the dynamic modeling of the actuators of the arm as well as the identification of the parameters of the model. The proposed method deals with the specific case of heterogeneously actuated arms, namely arms with actuators behaving differently for each joint, being considered at the kinematic level. Indeed, we show how to estimate the arms parameters when some of their revolute joints are directly actuated by geared motors, while the others are actuated by linear actuators. A minimum set of identifiable parameters is determined, and adequate excitation trajectories are generated and used in the identification... |
| Tipo: Text |
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| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00462/57375/59607.pdf |
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