[time-nuts] Terrestrial GPS

[Leo Bodnar]

Such system already exists, is called IMES, uses L1 band and is supported by standard Ublox 8 firmware.

http://gpsworld.com/wirelessindoor-positioningopening-up-indoors-11603/

Leo


> From: Stewart Cobb <stewart.cobb at gmail.com>
> Peter Reilley suggests a backup to GPS using terrestrial transmitters. This
> idea has been around since the early days of GPS....