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一种全站仪精准量测立木直径的方法
引用本文:郑怀兵,张民侠,冯浩.一种全站仪精准量测立木直径的方法[J].北京林业大学学报,2014,36(6):36-40.
作者姓名:郑怀兵  张民侠  冯浩
作者单位:南京森林警察学院森林消防系;南京森林警察学院森林消防系;南京森林警察学院森林消防系
基金项目:江苏省林业三新工程项目(lysx,国家级大学生创新项目(201212213002)。
摘    要:立木直径是森林资源调查的重要参数。本文提出了一种基于免棱镜全站仪对边测量原理的立木树干直径精 准量测方法,并以南方全站仪NTS-3401 为例,对该方法的理论精度进行了论证,结合量测数据对实际精度进行了 分析。结果表明:免棱镜全站仪对边测量原理的立木树干直径精准量测方法的理论精度中误差在0.4 mm 以内;使 用胸径尺量测立木直径3 次取平均值作为真值,用来检验全站仪量测立木树干直径的精度,数据表明真误差控制 在1 mm 以内,而林业测量中要求测量结果精确至1 mm。本文提出的全站仪精准量测立木直径的方法达到了林业 测量中量测立木直径毫米级的精度要求,可以解决非接触式量测立木上部(2 m 以上)直径的难题。 

关 键 词:全站仪  树干直径  立木  精准林业

A precise method to measure the trunk diameter of standing tree using total station
ZHENG Huai-bing,ZHANG Min-xia,FENG Hao.A precise method to measure the trunk diameter of standing tree using total station[J].Journal of Beijing Forestry University,2014,36(6):36-40.
Authors:ZHENG Huai-bing  ZHANG Min-xia  FENG Hao
Institution:Forest Fire Department, Nanjing Forest Police College,Nanjing,Jiangsu,210023,P. R. China
Abstract:Considering that the trunk diameter is an important indicator in the forest resources survey, a new precise method based on Tie Distance principle was introduced to measure the trunk diameter of the standing tree . The theoretical accuracy of this method was validated by using instrument of South Total Station NTS-3401 with non-prism, and the actual accuracy was analyzed combining with real measured values. The results showed that the mean square error of theoretical accuracy with the South Total Station NTS-3401 was less than 0.4 mm. In order to verify the accuracy with South Total Station NTS-3401, the mean value of measured results for three time with DBH (diameter at breast height)ruler was used as the real data, and the real error was within 1 mm, which meets the requirement of forestry measurement, that nearest to 1 mm. Therefore the method of the total station satisfies the accuracy requirement of millimeter level in measuring the diameter of standing trees in forestry measurement, and could solve the difficulty of non-contact measuring the diameter of trunk at the part higher than over 2 m 
Keywords:total station  trunk diameter  standing tree  precision forestry
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