New Wave Media

March 29, 2022

Charles River Analytics Builds AI to Manage Exposure of US Navy USVs

(Image: Charles River Analytics)

(Image: Charles River Analytics)

Following successful demonstration of a prototype system, Charles River Analytics was awarded a $600,000 contract from the U.S. Navy to further develop onboard AI for uncrewed surface vehicles (USVs).

USVs in shipping lanes or active fishing zones must be visible to prevent collisions. But when in open waters, USVs may need to hide to avoid pirates or vessels from hostile nations. Though the required actions could be controlled by a remote operator, such active communications increase the risk of exposure, potentially jeopardizing the mission and ending in tracking or capture.

To help the Navy safely navigate these conflicting requirements, Charles River Analytics is developing MIN-COST (Management of Intelligent Navigation for Condition-based Ocean Safe Transit), an onboard AI system that can autonomously determine the risks of exposure and adapt behavior in response to the USV’s surroundings.

“In the next 10 years, more and more Navy and commercial vessels will depend on AI systems,” said Drew Housten, Senior Software Engineer at Charles River Analytics and Principal Investigator for the MIN-COST effort. ”To navigate safely, these systems will need to make decisions autonomously when communication with human operators isn’t possible.“

MIN-COST is designed to be active throughout a mission, from pre-launch through execution. Before launching the USV, a human operator enters mission goals, a library of plans, and operating parameters. During the mission, MIN-COST uses real-time sensor data and forecasting models to build behavior tables comprising recommended tactics for dealing with potential threats to the USV. When a threat is encountered, MIN-COST selects tactics based on the operating parameters, the severity of the threat, and the behavior tables. If the selected tactics conflict, MIN-COST uses optimization algorithms to choose the best course of action. For example, a request to avoid a potential collision by slowing down may conflict with the speed needed to reach the next mission waypoint. MIN-COST determines that avoiding a collision is more important than reaching the mission waypoint on time, and selects a reduction in speed as the best course of action.

During the first phase of the MIN-COST project, Charles River developed the optimization algorithms and behavior-based autonomy engine that will be integrated into a full-scale prototype using the recently awarded additional funding.

“MIN-COST’s adaptability and versatility make it a critical technology for the rapidly growing industry of uncrewed marine vehicles,” said Housten. The technology may eventually appear on other vessels; hundreds of thousands of recreational boats populate US waters, and the team at Charles River Analytics envisions adapting MIN-COST to assist these boats with collision avoidance.

The February 2024 edition of Marine Technology Reporter is focused on Oceanographic topics and technologies.
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