GPS is widely available in the agricultural community and its potential is growing. Farm uses include mapping yields (GPS + combine yield monitor), variable rate planting (GPS + variable-rate planter drive), variable rate lime and fertilizer application (GPS + variable-rate spreader drive), variable rate pesticide application (GPS + variable-rate applicator), field mapping for records and insurance purposes (GPS + mapping software) and parallel swathing (GPS + navigation tool).

Differential corrections may be used in real-time or later, with post-processing techniques. Real-time corrections can be transmitted by Satelline EASy’s UHF radio link.