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arXiv · 2609.14748

Beyond Dead Reckoning: A Point of View on Camera--DAS--GNSS Continuity in Road Tunnels

Lyes Saad Saoud·Hesham A. Rakha·Mona Jaber·Moussa Ayyash
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Abstract

Road tunnels remove satellite visibility where connected and automated vehicles still require continuous, attributable, and integrity-bounded positioning. This Point of View argues that tunnel localization should be treated as infrastructure-assisted cross-modal track continuity, not as extrapolation from the last trusted satellite fix. A trusted portal satellite solution provides the global anchor, distributed acoustic sensing (DAS) continuous motion evidence, cameras sparse identity and lane anchors, onboard sensing short-term dynamics, and edge computing association, fusion, integrity monitoring, and guarded reacquisition. Ground truth is reserved for offline calibration and validation. The article develops a falsifiable research and deployment agenda for progressing from synchronized multimodal evidence to validated, integrity-aware tunnel positioning continuity.

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Lyes Saad Saoud, Hesham A. Rakha, Mona Jaber, Moussa Ayyash. 2026-09-13. Beyond Dead Reckoning: A Point of View on Camera--DAS--GNSS Continuity in Road Tunnels. https://arxiv.org/abs/2609.14748

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