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Proceedings Paper

CARACaS multi-agent maritime autonomy for unmanned surface vehicles in the Swarm II harbor patrol demonstration
Author(s): Michael T. Wolf; Amir Rahmani; Jean-Pierre de la Croix; Gail Woodward; Joshua Vander Hook; David Brown; Steve Schaffer; Christopher Lim; Philip Bailey; Scott Tepsuporn; Marc Pomerantz; Viet Nguyen; Cristina Sorice; Michael Sandoval
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Paper Abstract

This paper describes new autonomy technology that enabled a team of unmanned surface vehicles (USVs) to execute cooperative behaviors in the USV Swarm II harbor patrol demonstration and provides a description of autonomy performance in the event. The new developments extend the NASA Jet Propulsion Laboratory’s CARACaS (Control Architecture for Robotic Agent Command and Sensing) autonomy architecture, which provides foundational software infrastructure, core executive functions, and several default robotic technology modules. In Swarm II, CARACaS demonstrated higher levels of autonomy and more complex cooperation than previous on-water exercises, using full-sized vehicles and real-world sensing and communication. The core autonomous behaviors to support the harbor patrol scenario included Patrol, Track, Inspect, and Trail, providing the capability of finding all vessels entering the patrol area, keeping track of them, inspecting them to infer intent, and trailing suspect vessels. Significantly, CARACaS assumed responsibility for not only executing tasks safely and efficiently but also recognizing what tasks needed to be accomplished, given the current state of the world. Since the heterogeneous USV teams shared world model that evolved, such as due to (dis)appearance of vessels in the area or a change in health or availability of a USV, CARACaS replanned to generate and reallocate the new task list. Thus, human intervention was never required in the loop to task USVs during mission execution, though a supervisory role was supported in the autonomy system for mission monitoring and exception handling. Finally, CARACaS also ensured the USVs avoided hazards and obeyed the applicable rules of the road, using its local motion planning modules.

Paper Details

Date Published: 5 May 2017
PDF: 11 pages
Proc. SPIE 10195, Unmanned Systems Technology XIX, 101950O (5 May 2017); doi: 10.1117/12.2262067
Show Author Affiliations
Michael T. Wolf, Jet Propulsion Lab. (United States)
Amir Rahmani, Jet Propulsion Lab. (United States)
Jean-Pierre de la Croix, Jet Propulsion Lab. (United States)
Gail Woodward, Jet Propulsion Lab. (United States)
Joshua Vander Hook, Jet Propulsion Lab. (United States)
David Brown, Jet Propulsion Lab. (United States)
Steve Schaffer, Jet Propulsion Lab. (United States)
Christopher Lim, Jet Propulsion Lab. (United States)
Philip Bailey, Jet Propulsion Lab. (United States)
Scott Tepsuporn, Jet Propulsion Lab. (United States)
Marc Pomerantz, Jet Propulsion Lab. (United States)
Viet Nguyen, Jet Propulsion Lab. (United States)
Cristina Sorice, Jet Propulsion Lab. (United States)
Michael Sandoval, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 10195:
Unmanned Systems Technology XIX
Robert E. Karlsen; Douglas W. Gage; Charles M. Shoemaker; Hoa G. Nguyen, Editor(s)

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