GPS – a brief explanation
GPS is the acronym for the Global Positioning System. It is a planet-wide satellite navigation and positioning system with applications ranging from in-car “SatNav”, guiding combine harvesters and airliners, positioning oil rigs and weapons guidance systems.
Land surveyors use it as a tool for precise positioning and also general surveying and mapping methods.
The system is a three dimensional measurement system which uses hand held and more precise survey instruments to receive radio signals from orbiting satellites to determine their terrestrial (surface) position.