Theory of Operation

Real time kinematic (RTK) uses stationary base stations to correct global positioning system (GPS) signal for greater accuracy.

John Deere Mobile RTK (M-RTK) signal is an RTK solution that provides RTK level accuracy over a cellular based network. Base stations within this network are linked together by a central server. JDLink™ equipped machines utilize these base station corrections using cellular signal and send them to the StarFire™ 3000 Receiver.

Features

Since correction data is transferred over a cellular network, it may be available in areas limited by the line-of-sight requirement of traditional RTK radios. As long as the receiver is inside the M-RTK network and has adequate cell coverage, M-RTK corrections should be available. There is no need to switch base stations inside the network.

M-RTK signal utilizes M-RTK extend (M-RTK-X) which allows for up to 15 minutes of M-RTK corrections after M-RTK signal is lost.

NOTE: Do not use SF2 Fallback during operations when M-RTK accuracy is required. Accuracy while operating in SF2 mode does not equal the performance of M-RTK.

SF2 Fallback allows the StarFire™ 3000 Receiver to go into SF2 mode once M-RTK-X has timed out. To enable this feature, select Main softkey > Setup tab > Use SF2 if RTK Signal Lost checkbox. SF2 signal must be present at the time M-RTK-X times out. SF2 Fallback can be used for up to 14 days after M-RTK corrections are lost. After 14 days, the receiver defaults to Wide Area Augmentation System (WAAS) or European Geostationary Navigation Overlay Service (EGNOS) (if available). A connection to M-RTK is required to use SF2 Fallback again.

Rover must operate in M-RTK mode for greater than 1 hour before M-RTK-X or SF2 Fallback are available.