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96403

Precision Comparison and Analysis of Reflector-less Total Station Observations.

Article

Last updated: 22 Jan 2023

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Subjects

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Tags

Public Works Engineering

Abstract

In order to achieve the results that meet the specifications of given project, such as setting out and monitoring the structural deformation, the knowledge of reliability and accuracy of surveying equipment is inevitable. Reflector-less total station are widely used nowadays for several applications in geodetic engineering due to its highly accurate and fast measurements. A shortcoming is that it gives less accurate measurements in some cases of observations. The point position determination using reflector-less total station is subjected to some uncertainty due to angle of observation, incidence angle of signal to the surface, distance from the instrument to the point, instrument precision and material of reflecting surfaces.
This paper investigates the accuracy of reflector-less total station observations during the process of monitoring and setting out of engineering structures. This paper is performed also to find out the effect of inclined angle of reflecting surface, its color and type on the accuracy of reflector- less total station measurements. It has been converted to a group of charts that assure the accuracy required in determining the point coordinates. A formula is developed to represent the effect of these parameters on the uncertainty of the observations. The results of the practical measurements, adjustment and analysis of the observations are also presented.
From the results, It can be concluded that the white reflector surface have stronger reflectivity than any other surface. The unpainted metal target was the worst reflecting surface and the brick target was the best surface.

DOI

10.21608/bfemu.2020.96403

Keywords

Reflector-less total station, Monitoring, setting out, accuracy and structural deformation

Authors

First Name

Zaki

Last Name

Zeidan

MiddleName

-

Affiliation

Professor of applied geodesy., Public Works Department., Faculty of Engineering., El-Mansoura University., Mansoura., Egypt.

Email

zmze283@yahoo.com

City

Mansoura

Orcid

-

First Name

Ashraf

Last Name

Beshr

MiddleName

Abd Elwanis

Affiliation

Assistant Professor., Public Works Department., Faculty of Engineering., El-Mansoura University., Mansoura., Egypt.

Email

eng.aaaeshr@yahoo.com

City

Mansoura

Orcid

-

First Name

Sara

Last Name

Sameh

MiddleName

Mohamed

Affiliation

Demonstrator., Civil Engineering Department., Delta University for Science and Technology

Email

sarasameh724@gmail.com

City

-

Orcid

-

Volume

40

Article Issue

5

Related Issue

14486

Issue Date

2015-12-01

Receive Date

2015-12-27

Publish Date

2021-12-01

Page Start

86

Page End

97

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 40_Issue 5_Pages 86-97.pdf

PDF . 733.6kB

Link

https://bfemu.journals.ekb.eg/article_96403.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=96403

Order

25

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

https://bfemu.journals.ekb.eg/

MainTitle

-

Details

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Article

Created At

22 Jan 2023