SATELLITE NAVIGATIONAL SYSTEMS AND COMPONENTS THEREFOR, NAMELY, GLOBAL POSITIONING SYSTEMS AND SATELLITE-CARRIER-SIGNAL RECEIVERS, TRANSMITTERS, ANTENNAE, CONTROL UNITS AND PROCESSORS, FOR THE PRECISE NAVIGATION AND AUTOMATED CONTROL OF FARMING VEHICLES; COMPUTER SOFTWARE FOR USE IN GENERATING AND PROCESSING SATELLITE CARRIER SIGNALS FOR THE PRECISE NAVIGATION AND AUTOMATED CONTROL OF FARMING VEHICLES