Measuring the accuracy of coordinates and elevation of Google earth: how Google earth provide accuracy in location points and elevation

Abstract

The presence of Google Earth (GE) as a digital map has an impact on society. Where the community makes it a reference for the location of the object to navigation to a certain location. But the problem is whether the data presented by GE has good accuracy. In addition, Indonesia has a legal digital map released by the official state agency, the Geospatial Information Agency (BIG). This study compares the extent to which the GE accuracy of the X coordinate, Y coordinate and elevation. GE data is compared with the official BIG map for coordinates and DEMNAS for elevation. Coordinate comparison uses decimal format while DEMNAS is in meters. The comparison results for the X and Y coordinates have a very small error, which is close to 0 (zero) with the RMSE formula. While the high error rate is found in the elevation ratio of 4.5597.