What does GPS stand for and how is it used in surveying?

GPS stands for Global Positioning System. It is a satellite-based navigation system that allows users to determine their approximate location (latitude and longitude) anywhere on Earth. In surveying, GPS is utilized for precise positioning and measurements, which are critical in establishing control points, mapping, and conducting geographic surveys.

The system employs a constellation of satellites that transmit signals to receivers on the ground. By calculating the time it takes for signals to arrive, the GPS receiver can triangulate its exact position. This capability enables surveyors to achieve high levels of accuracy—often within a few centimeters—making GPS an essential tool for modern surveying practices. The ability to gather precise data quickly and efficiently has revolutionized how surveying is conducted, enhancing both the accuracy and efficiency of land surveying and related activities.