libgnss++: open-source C++20 GNSS toolkit recreates GPS drift in 3D Tokyo model vs RTKLIB
rsasaki0109 · x · 2026-10-26
The author simulates a real Tokyo drive on a 3D city model to show why GPS drifts between tall buildings — they block satellite signals (hidden satellites marked with red ×). His open-source C++20 GNSS library libgnss++ (green) is compared against RTKLIB (orange) against the true path (white). Code is on GitHub, supporting RTK/PPP/CLAS and IMU fusion.
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