Three-dimensional electronic sand table and the difference between the traditional sand table in which

Traditional sand table model is divided into two kinds, one is a simple sand table, is made with sand, stone and military chess field temporary production; the second is a permanent sand table, with pulp, gypsum powder and foam and other materials made. Three-dimensional electronic sand table, also known as three-dimensional digital map and three-dimensional geographic information system. It is the combination of remote sensing, geographic information systems, three-dimensional simulation and other high-tech.