森林资源信息外业采集移动平台关键技术研究

Design and implementation of forest resources information collection system based on 3S technology

森林资源信息外业采集时,常遇到定位难、调查和记录难、内业数据处理难等问题。本文围绕森林资源外业数据采集、记录和数据传输等问题提出了一个系统的解决方案:即在移动平台上将GIS、GPS、RS集成在手持PDA中,开发一套支持林业信息采集的低成本、效率高、携带方便的移动平台,平台利用GPS定位功能在野外快速定位,利用移动GIS平台将电子地图与实地联动,现场采集的数据直接保存在数据库中,实现无纸化操作,内业只要将外业数据直接导入到系统中,不需要手工录入卡片,大大减少了内业处理的工作量和误差传导。论文在数据准备、GPS定位与坐标转换、小班实地绘制和编辑、调查数据录入等关键技术进行了研究,并对平台进行了调试和应用,效果较好。

There were problems such as difficulties in confirming location of survey destination,investigating and recording,and processing collected data when the field works of the forestry resources information collection were conducted.A solution for the problems has put forward which integrated GIS,GPS,RS functions into a mobile platform,namely a hand-hold PDA instrument to realize forestry resources information collection in field with low cost and high efficiency.？ The GPS positioning function are helpful for fast exploration of survey area,and the mobile GIS platform is helpful for showing the real-time location on the map.The field survey result and other record are directly stored in the database while achieving paperless work,which will help to reduce the office workload and mistakes.The study project focuses on the method of data preparation,GPS positioning and coordinate conversion,sub-compartment drawing and editing and survey data recording.The debugging and employing achieve results effectively.