Robot boat found its way in the Solent without satellites

A UK spin-out navigated an uncrewed boat through the Solent using radar instead of satellite positioning. The system matches live radar echoes against stored maps of the coastline with particle filter algorithms, estimating both the vessel's position and how confident it is in that estimate. The trial is part of a push for navigation that keeps working when GPS is jammed, congested or contested.

Summary written with AI by HowTechMoves, based on reporting by UK Defence Journal.