当前位置: 首页 > 文章 > GPS林业定位误差分析与野点剔除方法 农业机械学报 2010,41 (5) 143-147
Position: Home > Articles > GPS Positioning Error Analysis and Outlier Elimination Method in Forestry Transactions of the Chinese Society for Agricultural Machinery 2010,41 (5) 143-147

GPS林业定位误差分析与野点剔除方法

作  者:
张慧春;郑加强;周宏平
单  位:
南京林业大学机械电子工程学院;昆士兰大学自然资源;农业和兽医系
关键词:
精确林业;全球定位系统;定位误差;野点剔除;控制点
摘  要:
针对林业GPS定位精度不高和利用差分技术提高定位精度时存在诸多局限性的问题,研究自主式提高精度方法,利用Trimble AgGPS132进行了单机定位试验,分析了试验数据的频数分布和野点剔除方法,对比分析了野点剔除前后的精度和散点分布图,探讨了野点存在的原因、解决办法和提高动态定位精度的方法,实际数据表明,采用莱以特准则剔除野点能够有效地改善数据处理结果,提高定位精度,利用加入控制点的方法可很好地校正GPS测得的动态定位数据的整体漂移。
译  名:
GPS Positioning Error Analysis and Outlier Elimination Method in Forestry
作  者:
Zhang Huichun1,2 Zheng Jiaqiang1 Zhou Hongping1(1.College of Mechanical and Electronic Engineering,Nanjing Forestry University,Nanjing 210037,China2.Faculty of Natural Resources,Agriculture and Veterinary Science,The University of Queensland,Queensland 4343,Australia)
关键词:
Precision forestry,GPS,Positioning error,Outlier elimination,Control point
摘  要:
Position accuracy is one of the most important parameters of GPS.Differential GPS(DGPS)can get higher position accuracy significantly,but there are many limitations for its applying ranges,so improving the accuracy by independent positioning method has important significance.Experiments in the non-differential mode by using Trimble AgGPS132 were conducted.First,the frequency distribution of the experimental data was analyzed.A method to eliminate outliers was raised,and GPS precision operating was compared before and after eliminating outliers.Finally,how to eliminate the influence of error was pointed out according to the different conditions.The results showed that adopting the Levin special criteria to eliminate outliers could improve the positioning accuracy effectively,and adding control point could correct the drift data of GPS dynamic positioning.

相似文章

计量
文章访问数: 8
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊