【摘要】 为了得到大比例尺、高精度、电子版的农田基础地图作为参照图层 ,来分析与处理精细农业研究与实践中采集到的不同数据 ,该文讨论了几种利用 3 S技术的测绘方法 ,并进行了 GPS测绘工作。 GPS定位数据在 GIS系统中经过处理并编辑成图。为了提高测绘和成图的精度 ,文中设计并测试了单点重复定位—求平均 ,以及连续定位—移动平均等 GPS数据的处理方法 ;测试结果表明测绘精度达到 0 .5 m左右。该文农田基础地图的更新基于经过多项式几何校正与坐标配准后的遥感图像进行。更多还原

【Abstract】 For manipulating mass and various datum of precision agriculture gathered from different datum sources, an accurate, large scale, digital field base map is needed as a reference. In order to obtain this kind of field base map, several mapping methods were compared and the GPS mapping was carried out. The GPS data were processed and the map was generated in a field level GIS. For increasing the map accuracy, single point repeated positioning averaging, and continuously positioning moving averaging methods of data processing were designed and tested. The test result shows that the map accuracy is about 0.5 m. The map updating was based on RS images. Methods of RS image multinomial digital geometric correction, and RS image coordinate register for field base map updating were introduced.更多还原