| 曲宏辉,于见丽,王正茂.全站仪拟合圆测立木直径方法研究[J].林业调查规划,2024,49(6):6-9 |
| 全站仪拟合圆测立木直径方法研究 |
| Method of Measuring Tree Diameter by Fitting Circle with Total Station |
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| DOI： |
| 中文关键词: 全站仪 立木直径测量 拟合圆 最小二乘法 |
| 英文关键词: total station measuring the diameter of standing tree fitting circle least square method |
| 基金项目:烟台市科技创新发展计划(2022MSGY070). |
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| 中文摘要: |
| 针对全站仪基于视距、天顶距和切线夹角三角函数关系测算立木直径的研究中,因视线遮挡
需频繁移动测站从而造成误差的问题,提出一种全站仪拟合圆获取立木直径的方法。利用全站仪打点测量的灵活性克服传统方法的视线遮挡难题,利用最小二乘法基于全站仪获取的观测点,拟合二维平面圆形,进而获取立木直径。基于实地采样开展的不同树种多株树木不同点数的多组实验结果表明,该方法能够达到调查精度要求。 |
| 英文摘要: |
| Aiming at the errors caused by frequent movement of the measuring station due to line of sight
obstruction in the study of measuring the diameter of standing trees based on the trigonometric relationship
between line of sight, zenith distance, and tangent angle using a total station, this paper proposed a
method to obtain the standing tree diameter by fitting the circle with a total station. The method used the
flexibility of the total station point measurement to overcome the problem of line of sight obstruction in the
traditional method, and used the least square method to fit the two-dimensional plane circle based on the
original observation points obtained by the total station to measure the diameter of the standing tree. The
results of multiple experiments based on field sampling of different tree species, multiple trees, and different
locations showed that this method could meet the requirements of survey accuracy. |
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