[anenefan]

Interesting just in case system. Hybrid of both GPS and BPS for extra accuracy might have benefits. But from [2 - page 13] four transmission towers, accuracy is within 100 m.

[1] https://nabpilot.org/broadcast-positioning-system-bps/

[2] https://www.gps.gov/cgsic/meetings/2023/diamond.pdf [pdf]