Spatial Information Collecting Methods and Its Data Application for Precision Agriculture Based on PDA, GPS and GIS
WU Wen-bo~1,ZHANG Shu-hui~1,LI Xue-fei~2,QIAN Xia~2 (1.College of Biological and Agricultural Engineering, Jilin University, Changchun 130022, China; 2.Binzhou Professional Institute, Binzhou 256624, China)
In order to collect the spatial information for precision agriculture, the GPS equipment and GIS software intergrated by PDA were used to make up two kinds of spatial information collected systems, real-time difference mode with PDA +DGPS+GIS and pocket mode with PDA+GPS+GIS. For spatial data colleted by the above-mentioned modes, reasonable and stylized data converting and processing methods were proposed. By applying the VC and MapX modules a data-processing program was developed for variable rate fertilization, which can get high precision grid cells and identification parameters from the collected data to prepare for variable rate fertilization. Field experiments proved that two kinds of information collected modes and data processing methods can obtain field electronic grid cell maps in keeping with the requirements for precision agriculture, which can be applied to variable rate fertilization sampling navigating and yield monitoring, being characterized by good practicability.