ASV’s C-Stat 2 completes final acceptance with Tohoku University

By Caroline Rees / 02 Sep 2013
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C-Stat 2 Mobile Buoy System

In early August 2013 a team from ASV oversaw the successful completion of the C-Stat 2 acceptance trials for Tohoku University around 200 miles offshore from the Japanese Pacific coast. The trails included control of the unmanned vessel over both UHF and a satellite link where longer range was required. The integrated long baseline positioning payload was controlled through these links via the ASView control system.

The C-Stat is a mobile station keeping buoy powered by a hybrid diesel-electric drive system. The hull is made of aluminium with a PU coated closed cell foam fender and an integral fuel tank capable of carrying enough fuel for an endurance of over 4 days in currents of up to 3.5knots.

The vehicle was delivered with an LBL transducer and a TOG-S fibre optic gyro and a satellite corrected differential GPS. This allowed the accurate positioning of seabed transducers that will be used to monitor seabed lateral movement, contributing to a national program in Japan that aims to predict future earthquakes. This process is normally carried out by a large ship, but due to ship generated noise calculating accurate position fixes proved difficult. C-Stat has been found to generate significantly less noise improving accuracy and adding the further benefit that the ship may continue working on other tasks whilst measurements are undertaken.

Posted by Caroline Rees Caroline co-founded Unmanned Systems Technology and has been at the forefront of the business ever since. With a Masters Degree in marketing Caroline has her finger on the pulse of all things unmanned and is committed to showcasing the very latest in unmanned technical innovation. Connect & Contact
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