With 50 total points, Coordinated Robotics finished in first place in the DARPA Subterranean (SubT) Challenge Virtual Tunnel Circuit event, and as the top self-funded team, earned $250,000. Eight teams developed, tested, and submitted their software-based solutions for simulation-based evaluation on the SubT Virtual Testbed.

DARPA-funded and self-funded teams compete side-by-side throughout the Subterranean Challenge. Only self-funded teams are eligible for prizes in the Circuit Events, but they must finish in the top five overall. All qualified teams are eligible for prizes in the Final Event.

Bayesian Adaptive Robot Control System (BARCS) took second place. SODIUM-24 Robotics came in third, and as a self-funded team, earned the $150,000 prize. Robotika finished fourth, and as a self-funded team, earned the $100,000 prize. Communication Optimized, Low Latency Exploration, Map-Building and Object Localization Autonomy (COLLEMBOLA) rounded out the top five.

The Virtual Tunnel Circuit competitors developed advanced software for their respective teams of virtual aerial and wheeled robots to explore tunnel environments, with the goal of finding various artifacts hidden throughout the virtual environment and reporting their locations and types to within a five-meter radius during each 60-minute simulation run.

Identical to the rules of the SubT Challenge Systems competition, a correct report is worth one point and competitors win by accruing the most points across multiple, diverse simulated environments.

Each team assembled a roster of robots and sensors by selecting from the available configurations on the SubT Tech Repo. Each robot configuration has an associated cost, measured in SubT Credits - an in-simulation currency - based on performance characteristics such as speed, mobility, sensing, and battery life. The team rosters are limited to a maximum combined cost of 1,000 SubT Credits.

Each team wrote software and algorithms for their set of robots to compete in the simulated environments. Several practice scenarios were available in advance for teams to test, refine, and perfect their innovative approaches, leading to their final submissions. DARPA evaluated each entry using a set of hidden competition scenarios of varying scales and difficulty levels.

"The Virtual Tunnel Circuit challenged teams to develop an even greater understanding of how autonomous systems will work with zero human intervention, i.e., no human supervisor, available to redirect or adjust course," said Timothy Chung, DARPA program manager for the Subterranean Challenge.

"The Virtual courses, just like the Systems courses, intentionally mimic the unpredictability and diverse terrain that service members and first responders could encounter in unknown, underground environments."

The DARPA Subterranean Challenge seeks to better equip warfighters and first responders to explore human-made tunnel systems, urban underground, and natural cave networks, while decreasing risk to human lives.

The SubT Challenge Systems and Virtual competitions aim to create a community of multidisciplinary teams from wide-ranging fields to foster breakthrough technologies in autonomy, perception, networking, and mobility for underground environments.

Researchers, engineers, roboticists, and robot enthusiasts inspired by the Tunnel Circuit still have time to apply to compete in either or both of the Urban Circuit Systems and Virtual competitions, which will take place in February 2020. The qualification deadline for the Systems Urban Circuit is Dec. 3, with a deadline of Jan, 3, 2020, for the Virtual competition.

Qualification requirements and competition rules can be found on the Resources tab of the Subterranean Challenge website. The Cave Circuit will take place in August 2020. The Final Event incorporating all three subdomains will be in August 2021.

Related Links
Subterranean Challenge
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