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 <[email protected]> > Peter Reilley suggests a backup to GPS using terrestrial transmitters. This > idea has been around since the early days of GPS.... _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
