基于PDA/GPS/GIS的精确农业空间信息采集方法及其数据应用

为了实现精确农业空间信息采集,作者运用PDA集成GPS设备与GIS软件,组成了DGPS+GIS+PDA的实时差分模式和Pocket GPS+GIS+PDA便携式两种系统。针对两种模式采集的GIS空间数据,分别提出了合理的、程式化的数据转换与处理方法。应用VC和MapX控件自主开发了用于精确农业变量施肥作业的数据处理应用程序,通过此程序能够从采集的数据中方便快捷地获得高精度农田网格图和识别参数。田间实验证明:两种信息采集模式和数据处理方法能够获得符合精确农业精度要求的农田电子地图,并能将其应用于变量施肥、采样导航和产量监测等工作,具有很好的实用性。

Spatial Information Collecting Methods and Its Data Application for Precision Agriculture Based on PDA, GPS and GIS

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.