Update on Ifremer technological developments and operational feedbacks with underwater systems
This paper reports on the status of Ifremer Underwater systems. It will focus on recent innovations, improvements and operational references of the remotely operated vehicle “Victor 6000”, of the autonomous underwater vehicles “AsterX” and “IdefX”, of the new “Sysif” seismic tool and some hints about RanD in the domain of Advanced Intervention AUVs.
From SIRENE to SWIMMER - supervised unmanned vehicles : Operational feedback from science to industry
This paper presents in a first part, the operational feedback of the SIRENE self positioned free swimming vehicle tele-operated through a bi-directional long range acoustic communication system. This vehicle, designed by IFREMER for the management of benthic loads on the sea floor, had demonstrated the possibilities of deep sea Intervention ( Up to 3000m depth) with AUV. The SIRENE experience leads a team driven by the CYBERNETIX company In collaboration with IFREMER (France) to propound a new concept of intervention in the scope of new deep sea challenges for the oil offshore industry. This new concept named SWIMMER Sub-sea Works, Inspection and Maintenance with Minimum Environment ROV, will be introduced taking into account the SIRENE experience and the industrial requests.
Representation of systems disturbed by wide band noise
In this paper, a method of handling and working with wide band noise is developed. We represent wide band noise as a distributed delay of white noise and use it to reduce a nonlinear system disturbed by wide band noise to a nonlinear system disturbed by white noise. An application of this reduction to a nonlinear filtering problem under a wide band noise disturbance is discussed.