An automated steering system for an agricultural vehicle operating in a rowcrop field.The automated steering system includes a correction system having a controllerand an alignmentsensor. The alignment sensor is disposed between two adjacently spaced croprows andgenerates output signals indicative of the alignment sensors lateral positionrelative to the twoadjacently spaced crop rows as the vehicle advances in the forward directionof travel. Thecontroller receives the generated output signals from the alignment sensor anddetermines anoffset distance of said alignment sensor from a centerline between the twoadjacently spacedcrop rows. The controller outputs a modified vehicle position signalcorresponding to thelatitude and longitude position received from said GPS receiver shifted by theoffset distance.The vehicles on board navigation controller causes the vehicles on-boardsteering control systemto steer the vehicle based on the modified vehicle position signal.
