What is GPS?

It is the Global Positioning System. Simply put, it is a satellite system consisting of 24 satellites covering the entire globe. This system ensures that at any given moment, any point on the earth can observe 4 satellites at the same time to ensure that the satellites can collect the latitude, longitude and altitude of the observation point in order to realize the navigation, positioning, timing and other functions. This technology can be used to guide aircraft, ships, vehicles and individuals, safe and accurate along the selected route, on time to their destinations.GPS positioning technology has high precision, high efficiency and low cost advantages, so that in all kinds of geodetic control network to strengthen the transformation and the establishment of the highway engineering measurement and deformation of large-scale structures in the measurement of a relatively wide range of applications.