The geo-spatial information data is classified into the position data and the attribute data. Up to now, the position data can be acquired from the triangulation surveying, traverse surveying, and astronomy surveying. But if the observing station is m...
The geo-spatial information data is classified into the position data and the attribute data. Up to now, the position data can be acquired from the triangulation surveying, traverse surveying, and astronomy surveying. But if the observing station is moving, the position data cannot be acquired by traditional surveying method. This problem can be settled by GPS and the moving position can be confirmed. Generally, digital map is made from digitizing or scanning to the map. The geo-spatial data is intersection of road, engineering building, a primary school, and a gas station near Pusan National University using differential global positioning system.
This paper investigates the efficiency of acquisition of geo-spatial information data using DGPS in day and night.