[Ráfaga] #2910: underground, landmarks

[Rafagas team]

#2910: underground, landmarks

Tue, 26 Nov 2024 by Raf

* Offline motion detection based on the signature of vibration
frequencies allows for precise positioning in underground
transportation where GPS does not reach

https://blog.transitapp.com/go-underground/

* More than 84,000 delimitation landmarks (terms) located and mapped
in the IGN France campaign to recover this heritage, which dates back
several centuries. [FR]

https://macarte.ign.fr/carte/H9R6EZ/Ensemble

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Translated by Isaac, Jaume, Jorge, and Wladimir

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