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Yes! The national mapping agency (Ordnance Survey) make the algorithm for highly accurate GPS conversion (OSTN02) available for free. This is my implementation

by gmac 5y ago

Yes! The national mapping agency (Ordnance Survey) make the algorithm for highly accurate GPS conversion (OSTN02) available for free. This is my implementation in C, for example: https://github.com/jawj/OSTN02c https://github.com/jawj/OSTN02c