ree’s 3D coordinates positioned by two－side intersection with total station

XU Wen－bing; TANG Meng－ping

doi:10.11833/j.issn.2095-0756.2010.06.002

Volume 27 Issue 6

Dec. 2010

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XU Wen－bing, TANG Meng－ping. ree’s 3D coordinates positioned by two－side intersection with total station[J]. Journal of Zhejiang A&F University, 2010, 27(6): 815-820. doi: 10.11833/j.issn.2095-0756.2010.06.002

Citation:

XU Wen－bing, TANG Meng－ping. ree’s 3D coordinates positioned by two－side intersection with total station[J]. Journal of Zhejiang A&F University, 2010, 27(6): 815-820. doi: 10.11833/j.issn.2095-0756.2010.06.002

ree’s 3D coordinates positioned by two－side intersection with total station

doi: 10.11833/j.issn.2095-0756.2010.06.002

1.
School of Environmental Sciences and Technology，Zhejiang A & F University，Lin’an 311300，Zhejiang，China

More Information

Corresponding author: XU Wen－bing
Publish Date: 2010-12-20

Abstract

In forest inventory，poor visibility caused by trees and shrubs often lowers the positioning accuracy and efficiency，sometimes even makes the survey difficult to carry out. Free－station method of total station can work well in poor visibility conditions. Due to relatively low accuracy required in forest inventory and in order to calculate conveniently in field，two－side intersection method is more suitable. When observing two sides，the method of missing line measurement can timely detect accuracy of measured length. It is unnecessary to aim straight at the mark and measure of instrument height if three－dimensional coordinates of the instrument center are directly calculated. Practices indicate that the side length error of inventory unit can be less than 5 cm，the relative error is less than 1/200，and closing error of sample plot is less than 1/2 of averagee distance between adjacent trees.［Ch，2 fig. 3 tab. 12 ref.］
- forest mensuration,
- total station,
- two－side intersection,
- free station method,
- 3D coordinates,
- tree

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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ree’s 3D coordinates positioned by two－side intersection with total station

1. School of Environmental Sciences and Technology，Zhejiang A & F University，Lin’an 311300，Zhejiang，China

Corresponding author: XU Wen－bing

Publish Date: 2010-12-20

Key words:

Abstract: In forest inventory，poor visibility caused by trees and shrubs often lowers the positioning accuracy and efficiency，sometimes even makes the survey difficult to carry out. Free－station method of total station can work well in poor visibility conditions. Due to relatively low accuracy required in forest inventory and in order to calculate conveniently in field，two－side intersection method is more suitable. When observing two sides，the method of missing line measurement can timely detect accuracy of measured length. It is unnecessary to aim straight at the mark and measure of instrument height if three－dimensional coordinates of the instrument center are directly calculated. Practices indicate that the side length error of inventory unit can be less than 5 cm，the relative error is less than 1/200，and closing error of sample plot is less than 1/2 of averagee distance between adjacent trees.［Ch，2 fig. 3 tab. 12 ref.］

ree’s 3D coordinates positioned by two－side intersection with total station

doi: 10.11833/j.issn.2095-0756.2010.06.002

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Related

Proportional views