摘要
论述三角高程法和三维前方交会法测量树高的原理及其精度,分别给出2种测量方法的测量精度计算公式.通过20组实验数据分析2种方法的测量精度,结果表明,三角高程法比三维前方交会法的测量精度高,其中三角高程法测量精度为1.95%,三维前方交会法测量精度为4.83%,均可满足林业上对测树精度的要求.
The paper elaborates the principles and precisions of both trigonometric leveling method and 3D forward intersection method, and introduces the formulas for precision calculation of these two methods respectively. Through 20 groups＇ experimental analysis, the result showed that the precision of trigonometric leveling method as 1.95% was higher than that of 3D forward intersection method as 4. 83%. And both methods can meet the requirement for the precision of tree measurement in forestry.
出处
《林业调查规划》
2009年第6期1-5,共5页
Forest Inventory and Planning
基金
省部委课题"树高测量基本原理
模型与技术应用实验"(KF2008W35-041)
关键词
树高测量
测量精度
三角高程法
三维前方交会法
measurement for tree height
measurement precision
trigonometric leveling method
3D forward intersection method
