GPS topographic surveying uses satellites to determine the exact location of points on Earth. GPS receivers capture signals from at least four satellites to calculate three-dimensional coordinates (latitude, longitude and altitude) of points. This process is based on measuring the time it takes for signals to reach the receiver, thus determining the distance to the satellites. The positions obtained are extremely precise thanks to techniques such as differential positioning, which corrects errors caused by various factors. The collected data is used to create detailed maps and topographic models.
GPS topographic surveying has applications in various fields. In civil engineering, it is used to design and construct infrastructure such as roads, bridges and buildings. In precision agriculture, it helps in crop management by optimising resource use. It is essential in geodesy and cartography to create accurate maps and terrain models. In environmental monitoring, it is used to detect land changes and natural resource management. It is also employed in urban and rural land management, sea and air navigation, and rescue and civil defence operations.
