Range precision in forestry with Reflectorless Total Station

SU Yingzhang; XU Wenbing; ZHANG Guoli; MA Cancan; LIANG Dan; FANG Yapan

doi:10.11833/j.issn.2095-0756.2015.03.007

Volume 32 Issue 3

May 2015

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SU Yingzhang, XU Wenbing, ZHANG Guoli, MA Cancan, LIANG Dan, FANG Yapan. Range precision in forestry with Reflectorless Total Station[J]. Journal of Zhejiang A&F University, 2015, 32(3): 376-383. doi: 10.11833/j.issn.2095-0756.2015.03.007

Citation:

SU Yingzhang, XU Wenbing, ZHANG Guoli, MA Cancan, LIANG Dan, FANG Yapan. Range precision in forestry with Reflectorless Total Station[J]. Journal of Zhejiang A&F University, 2015, 32(3): 376-383. doi: 10.11833/j.issn.2095-0756.2015.03.007

Range precision in forestry with Reflectorless Total Station

doi: 10.11833/j.issn.2095-0756.2015.03.007

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

Received Date: 2014-08-28
Rev Recd Date: 2014-11-26
Publish Date: 2015-06-20

Abstract

The Reflectorless Total Station, a convenient and efficient instrument for distance measurement used more in construction surveying than in forestry, was employed to determine the influence of different factors, such as trees, walls, distance, and angle of incidence, on precision distance measurements in forestry and to determine its feasibility for use with forest surveys, a Reflectorless Total Station （SOKKIA SET1X Total Station） with trees and walls as survey targets was tested. Experimental results on precision of distance measurements showed that （1） the material quality of a wall had little effect, its error is about 0.5 mm; whereas, （2） different tree species has varying degrees of bark roughness, it had the most influence to precision distance. For example, maximum error reached 2.769 mm with a measuring distance of 20 m. （3） Surface color of the target object revealed that the darker the color the greater the influence with 1 mm of error for a 20 m distance. （4） The stability of reflected signals had an error proportional to the distance with close to 5 mm measurement error for 100 m. （5） When the angle of incidence was over 20, at 20 m the error was close to 2 mm. （6） for target trees with rough bark, randomly selected target points should be obtained to improve the precision of the distance measurement.［Ch, 2 fig. 6 tab. 17 ref.］
- forest mensuration,
- total station,
- measuring distance by reflectorless,
- range precision

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Range precision in forestry with Reflectorless Total Station

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

Received Date: 2014-08-28

Rev Recd Date: 2014-11-26

Publish Date: 2015-06-20

Key words:

Abstract: The Reflectorless Total Station, a convenient and efficient instrument for distance measurement used more in construction surveying than in forestry, was employed to determine the influence of different factors, such as trees, walls, distance, and angle of incidence, on precision distance measurements in forestry and to determine its feasibility for use with forest surveys, a Reflectorless Total Station （SOKKIA SET1X Total Station） with trees and walls as survey targets was tested. Experimental results on precision of distance measurements showed that （1） the material quality of a wall had little effect, its error is about 0.5 mm; whereas, （2） different tree species has varying degrees of bark roughness, it had the most influence to precision distance. For example, maximum error reached 2.769 mm with a measuring distance of 20 m. （3） Surface color of the target object revealed that the darker the color the greater the influence with 1 mm of error for a 20 m distance. （4） The stability of reflected signals had an error proportional to the distance with close to 5 mm measurement error for 100 m. （5） When the angle of incidence was over 20, at 20 m the error was close to 2 mm. （6） for target trees with rough bark, randomly selected target points should be obtained to improve the precision of the distance measurement.［Ch, 2 fig. 6 tab. 17 ref.］

Range precision in forestry with Reflectorless Total Station

doi: 10.11833/j.issn.2095-0756.2015.03.007

Abstract

References

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通讯作者: 陈斌, bchen63@163.com

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