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GPS Machine Control Home GPS Info: What is GPS How GPS Works GPS Systems Accuracy - US GPS - Soviet GLONASS - EU Galileo - Why GPS, GLONASS & Galileo Machine Control GPS: How GPS Machine Control Works - Base Stations intro - Radio Base Stations - GPS and RTK accuracy - GPS + Laser = MM Accuracy - GPS + Cell = 1200+ Sq Miles - GPS on Machines - GPS Control Boxes/Computers - GPS Automate Vs. Indicate GPS System Benefits: GPS Machine Control Benefits - Billing Controls - Data and Management - Job Management - Move Dirt 1 Time! - Many Machines GPS Parts, Prices, and More: GPS Machine Control Parts & Cost - Pricing Automate vs Indicate - GPS for Graders - GPS for Dozers - GPS for Blades - GPS for Scrapers - GPS for Excavators Informative Grade Sites: AccurateGrade.com - Precision Grading Practices LowCostMachineControl.com - Laser Machine Systems Sponsors: Rocky Mtn Lasers Construction Lasers Construction Directory |
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So we know that GPS satellites are above us, and transmit signals that come down to earth telling us in precise ways how long ago the signal was sent, and we know how fast the radio signal gets to us. For now let's assume that those signals are perfect, straight, and not affected by anything. Therefore a simple equation, distance = rate x time will tell you how far away from the satellite you are if you know the time and rate.
