南京林业大学学报（自然科学版）Issue(6)：72-76,5.DOI:10.3969/j.issn.1000-2006.2014.06.014
立地类型和定位模式对精准林业GPS定位的影响
Effects of the site condition and positioning mode on GPS performance for precision forestry
摘要
Abstract
The main purpose of the study was to test GPS equipment receivers used for open sky and forest condition with non differential and RBN differential mode, and to quantify satellite availability, PDOP, accuracy, and precision under different factors, the objective being to assist GPS�s application in precision forestry. Results of stationary test showed that the RBN DGPS mode improved the accuracy and precision both in open sky and forest condition. Comparing to the open sky, forestry GPS application decreased the number of satellites availability by 2-3, increased PDOP by 0.8-1.2, reduced accuracy by 0�30-0�31 m, and reduced precision by 0.92-1.01 m. In mobile test, analysis of variance ( ANO⁃VA) with SPSS16.0 was used to clarify the effects of positioning mode and site condition on the precision of GPS. Ac⁃cording to the ANOVA test, the GPS positioning perimeter and area were affected significantly by positioning mode, site condition and their interaction. Based on the research, it is clearly possible to obtain good accuracy of a RBN GPS in for⁃est, and forest observational conditions made extremely different conditions for GPS observation owing to forestry canopy causing strong multipath effect and satellites signals reception.关键词
精准林业/立地类型/定位模式/定位准确度/定位精确度Key words
precision forestry/site condition/positioning mode/positioning accuracy/positioning precision分类
天文与地球科学引用本文复制引用
张慧春,周宏平,郑加强..立地类型和定位模式对精准林业GPS定位的影响[J].南京林业大学学报（自然科学版）,2014,(6):72-76,5.基金项目
国家自然科学基金面上项目（31371963）；江苏省自然科学基金青年基金项目（BK20130965）；江苏高校优势学科建设工程资助项目（PAPD）；江苏省杰出青年教师培育聘专项项目（2012256）；南京林业大学高学历人才基金项目 （）
