Uncertainty Analysis on Spatial Date in the Integrated Control System of Karst Rocky Desertification

摘要

Uncertainty is the process where the spatial process and character cannot be accurately verified, and it is an intrinsic specific property of each spatial phenomenon in nature.In order to set up the integrated control system of karst rocky desertification which is based on the geographic information system (GIS) platform, we have to determine the uncertainty originate of spatial data of this system in the first place, and then generalize the error in navigation system by contrasting the point located by global position system (GPS) with the system displaying coordinates, and finally draw the conclusion that the uncertainty on spatial date in the integrated control system of karst rocky desertification originates from mainly GPS geodesic data, map data , RS data , data converters , errors in the process of GIS analysis by analyzing the remote sensing (RS) data.It is allowable that the system displaying error is 0.018.