When appearance and motion disagree: evaluating class--motion consistency against disguised uncrewed surface vessels
Overview
This research paper evaluates defenses against disguised uncrewed surface vessels (USVs) by testing adversarial hull patches and physical disguises. The study finds that while adversarial hull patches suppress detection in up to 29% of attempts, they never cause misclassification as benign. Physical disguises can bypass both camera and radar checks. A hybrid replay protocol combining AIS tracks with recorded benign motion is developed for evaluation. For recreational-labeled vessels attacking via direct run-in within 4 nautical miles, an asset-relative closing-rate check flags 94-95% of threats at 15-20 knots, compared with 12% for a track-only speed check. The checks are complementary on off-axis approaches, constraining the attacker and extending response time. Flagging on either check has a 4.9% overall false-alarm rate and 12.3% on recreational traffic.
Generated from attributed reports · Updated 2 hours ago
Event evidence and corrections
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Reported quantity · closing rate threshold: 15 other · Basis not reported
“ia direct run-in within 4 nautical miles, an asset-relative closing-rate check flags 94-95% at 15-20 knots, compared with 12% for a track-only speed check. The checks are complementary on off-axis approaches, constraining the attacker to remain below both thresholds and extending the time required to reach the asset. Flagging on either check has a 4.9% held-out false-alarm rate overall and 12.3% on recreational traff”
Exact source · revision 1Source owner not reported
Reported quantity · distance threshold for direct run-in: 4 other · Basis not reported
“ia direct run-in within 4 nautical miles, an asset-relative closing-rate check flags 94-95% at 15-20 knots, compared with 12% for a track-only speed check. The checks are complementary on off-axis approaches, constraining the attacker to remain below both thresholds and extending the time required to reach the asset. Flagging on either check has a 4.9% held-out false-alarm rate overall and 12.3% on recreational traff”
Exact source · revision 1Source owner not reported
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- arXiv Robotics — research abstractsSignalWhen appearance and motion disagree: evaluating class--motion consistency against disguised uncrewed surface vessels
This research paper evaluates defenses against disguised uncrewed surface vessels (USVs) by testing adversarial hull patches and physical disguises. The study finds that while adversarial hull patches suppress detection in up to 29% of attempts, they never cause misclassification as benign. Physical disguises can bypass both camera and radar checks. A hybrid replay protocol combining AIS tracks with recorded benign motion is developed for evaluation. For recreational-labeled vessels attacking via direct run-in within 4 nautical miles, an asset-relative closing-rate check flags 94-95% of threats at 15-20 knots, compared with 12% for a track-only speed check. The checks are complementary on off-axis approaches, constraining the attacker and extending response time. Flagging on either check has a 4.9% overall false-alarm rate and 12.3% on recreational traffic.
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