Initial capture system for autonomous recovery of AUVs

ARL, in collaboration with NATO Undersea Research Center (now known as CMRE), started work on an intelligent system to facilitate the launch and recovery of the AUVs. This system is called Autonomous Launch and Recovery System (AutoLARS). The AutoLARS system is designed to facilitate the recovery of AUVs which are not equipped to dock into docking stations. The only requirement for the AUVs is to be able to proceed between two waypoints at a nominal heading and depth. The AutoLARS will estimate the AUV's approach and proceed to intercept it for subsequent recovery. Since the interception takes place subsea, the AutoLARS can operate at elevated sea states.

The AutoLARS system comprises of the subsea capture and interception unit and a surface control unit for power and the intelligence. The subsea capture and interception unit is connected to the surface unit with a tether capable of supplying power and data. The AutoLARS system is equipped with a free running commercial-off-the-shelf pinger, a set of four hydrophones near the periphery of the AutoLARS interception ring, a compass and a depth sensor.

Related Publications

[1] S. Pai, S. Suman, Y. S. Wu, B. Kalyan, and M. Chitre, “Distributed software system architecture for autonomous launch and recovery system of autonomous underwater vehicles,” in OCEANS 2013 MTS/IEEE, (San Diego), pp. 1-7, September 2013. [ DOI | .pdf ]
[2] S. Suman, S. Pai, Y. S. Wu, B. Kalyan, and M. Chitre, “A path planning system for autonomous launch and recovery system of autonomous underwater vehicles,” in OCEANS 2013 MTS/IEEE, (San Diego), pp. 1-7, September 2013. [ DOI | .pdf ]
[3] S. Pai, P. Guerrini, J. Potter, A. Maguer, M. Chitre, and S. Biagini, “Autonomous initial capture system for AUV recovery,” in Underwater Acoustic Measurements: Technologies and Results, 3rd International Conference and Exhibition, (Nafplion, Greece), June 2009. [ .pdf ]
 

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