A
system and method for determining a position of a
center pivot irrigation system includes positioning a
tower unit on the rotatable arm of the
irrigation system, determining a distance between the arm's rotation center and the
tower unit, calculating coordinates of the
tower unit along a path of the tower unit as the arm rotates, and associating an action of the
irrigation system with coordinates of the tower unit location that correspond to the position of the arm where the action is to occur. Optionally, the action of the
irrigation system and the coordinates of the location of the tower unit are downloaded to a
remote unit located adjacent to the irrigation system. Optionally, current location coordinates of the tower unit are determined using a
GPS receiver at the tower unit. Optionally, the current location coordinates are transmitted from the tower unit to the
remote unit. Optionally, the current location coordinates are compared to the coordinates of the location of the action. If a substantial match of the current location coordinates with the location coordinates associated with an action is detected, the action may be initiated by the
remote unit through controls of the irrigation system.