EFFECT OF HORIZONTAL THERMAL GRADIENT ON GEODETIC MEASUREMENTS - MEASUREMENT AROUND THE BLAST FURNACE

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00323436" target="_blank" >RIV/68407700:21110/18:00323436 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

EFFECT OF HORIZONTAL THERMAL GRADIENT ON GEODETIC MEASUREMENTS - MEASUREMENT AROUND THE BLAST FURNACE

Original language description

This paper deals with the issue of the influence of the horizontal temperature gradient (horizontal refraction) on geodetic measurements of the horizontal direction. The topic of horizontal refraction has not yet been given much attention in research, especially because it is significantly less than the effect of vertical refraction in common geodetic practice. The article presents the mathematical modelling process by solving the differential equation of wave propagation in non-homogeneous atmosphere. On this basis, a specific case where this effect is significant, a measurement near a strong cylindrical heat source (such as a blast furnace) is then solved. Simulation of the passage of the beam curved by the inhomogeneous environment was performed and the resulting transverse deviation was evaluated in relation to the source temperature and the distance between the position and the target mark. In the simulation, the furnace temperature was used in the range from 400 ° C to 1000 ° C, distance from the target from 60 to 150 m. The result of the calculations is an estimate of the development of the resulting transverse deviation including a graphical representation of the overall shape of the curve. A special simulation was also carried out for a very close passage of the line of the sight to the heat source, only 0.1 m.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10300 - Physical sciences

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

18th International Multidisciplinary Scientific Geoconference SGEM 2018 - Informatics, Geoinformatics and Remote Sensing

ISBN

978-619-7408-40-9

ISSN

1314-2704

e-ISSN

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Number of pages

6

Pages from-to

751-756

Publisher name

STEF92 Technology Ltd.

Place of publication

Sofia

Event location

Albena

Event date

Jun 30, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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