摘要
在介绍GPS、DGPS、RTK、VRS、PDA等技术的基础上,详细阐述了基于VRS技术的DGPS-PDA在森林资源连续清查中应用的工作流程及操作步骤。研究表明,定位平均精度可达0.5 m左右,在信号较好的地方,精度可达0.3 m左右,提高了样地定位精度和连清工作的连续可比性。利用PDA进行野外数据采集,提高了工作效率,可实现森林资源连续清查的无纸化。
Based on introducing the technology such as GPS, DGPS, RTK, VRS, PDA, the paper expounded the work flow and application procedures of DGPS-PDA in continuous forest investigation based on VRS technology. Research shows that an average positioning accuracy can reach around 0.5 m, the precision can reach about 0.3 m in some place where the signal is good, sample plot positioning accuracy and continuous comparability of CFI can be improved, and the efficiency of field data collection can be improved by PDA, the continuous forest investigation of paperless can be realized with this method.
出处
《广东林业科技》
2009年第6期106-112,共7页
Forestry Science and Technology of Guangdong Province
基金
广东省林业科技计划项目"基于3S的森林资源与生态状况年度监测技术研究"
