张慧春 Zhang, Huichun, 郑加强 Zheng, Jiaqiang and 周宏平 Zhou, Hongping (2010) GPS林业定位误差分析与野点剔除方法. Nongye Jixie Xuebao, 41 5: 143-147. doi:10.3969/j.issn.1000-1298.2010.05.029

Author 张慧春 Zhang, Huichun
郑加强 Zheng, Jiaqiang
周宏平 Zhou, Hongping
Title GPS林业定位误差分析与野点剔除方法
Translated title GPS positioning error analysis and outlier elimination method in forestry
Language of Title eng
Journal name Nongye Jixie Xuebao
Translated journal name Transactions of the Chinese Society of Agricultural Machinery
Language of Journal Name eng
ISSN 1000-1298
Publication date 2010-05-01
Sub-type Article (original research)
DOI 10.3969/j.issn.1000-1298.2010.05.029
Volume 41
Issue 5
Start page 143
End page 147
Total pages 5
Place of publication Beijing, China
Publisher Zhongguo Nongye Jixiehua Kexue Yanjiuyuan
Language eng
Subject 2210 Mechanical Engineering
1100 Agricultural and Biological Sciences
Formatted abstract
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。

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.
Keyword Control point
Outlier elimination
Positioning error
Precision forestry
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Agriculture and Food Sciences
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