Nmeatime __exclusive__
Autonomous rovers and boats often drive into tunnels or dense forests where GPS signal is lost. Once the signal returns, the rover compares the new NMEATime with the last known NMEATime. The delta (difference in milliseconds) allows the inertial navigation system (IMU) to recalibrate its positional drift.
To understand NMEATime, one must first understand its parent protocol: NMEA 0183. The National Marine Electronics Association (NMEA) developed this standard in the early 1980s to facilitate communication between marine electronic devices. Before this standard, a depth sounder from one manufacturer might not be able to "talk" to a chart plotter from another. The NMEA standard created a universal language. NMEATime
Amateur Radio (Ham Radio): Digital modes like FT8 and JS8Call require extremely tight time synchronization (usually within one second) to successfully decode signals. NMEATime is a favorite in the ham community for "off-grid" digital stations. Autonomous rovers and boats often drive into tunnels