Interpretation and Evaluation of Procedures for Calculating the Group Refractive Index of Air by Ciddor and Hill

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00322662" target="_blank" >RIV/68407700:21110/18:00322662 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.5593/sgem2018/2.2" target="_blank" >http://dx.doi.org/10.5593/sgem2018/2.2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/sgem2018/2.2" target="_blank" >10.5593/sgem2018/2.2</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Interpretation and Evaluation of Procedures for Calculating the Group Refractive Index of Air by Ciddor and Hill

Popis výsledku v původním jazyce

Numerous errors and misinterpretations concerning the group refractive index of air are present in fields of geodesy and metrology. Many historical methods (e.g. Barrell and Sears, Edlén) are still in a frequent use even if they are considered obsolete and inaccurate from today’s perspective. The goal of this paper is to interpret and evaluate Ciddor and Hill procedures which were published in Applied Optics in 1996, 1999 and 2002. Along a simplified method, articles by Ciddor and Hill from 1996 and 1999 were recommended by the resolution of the International Association of Geodesy (IAG) held in Birmingham in 1999. Since then, no updated recommendation has been published. In this article, Ciddor and Hill procedures are evaluated in terms of new findings in the field of determining the density of air. Also a short comparison of Ciddor and Hill procedures with ten other older methods is introduced. All used equations were derived from original publications. A graphical software called DRefraction was developed in order to make the calculations easily accessible. With a help of this article, a reader should be able to choose the most suitable procedure for calculating the group refractive index of air. In case of a special metrology works, a reader should be able to program the complex procedure by Ciddor and Hill recommended by the International Association of Geodesy.

Název v anglickém jazyce

Interpretation and Evaluation of Procedures for Calculating the Group Refractive Index of Air by Ciddor and Hill

Popis výsledku anglicky

Numerous errors and misinterpretations concerning the group refractive index of air are present in fields of geodesy and metrology. Many historical methods (e.g. Barrell and Sears, Edlén) are still in a frequent use even if they are considered obsolete and inaccurate from today’s perspective. The goal of this paper is to interpret and evaluate Ciddor and Hill procedures which were published in Applied Optics in 1996, 1999 and 2002. Along a simplified method, articles by Ciddor and Hill from 1996 and 1999 were recommended by the resolution of the International Association of Geodesy (IAG) held in Birmingham in 1999. Since then, no updated recommendation has been published. In this article, Ciddor and Hill procedures are evaluated in terms of new findings in the field of determining the density of air. Also a short comparison of Ciddor and Hill procedures with ten other older methods is introduced. All used equations were derived from original publications. A graphical software called DRefraction was developed in order to make the calculations easily accessible. With a help of this article, a reader should be able to choose the most suitable procedure for calculating the group refractive index of air. In case of a special metrology works, a reader should be able to program the complex procedure by Ciddor and Hill recommended by the International Association of Geodesy.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10500 - Earth and related environmental sciences

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

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

ISBN

978-619-7408-40-9

ISSN

1314-2704

e-ISSN

—

Počet stran výsledku

8

Strana od-do

837-844

Název nakladatele

STEF92 Technology Ltd.

Místo vydání

Sofia

Místo konání akce

Albena

Datum konání akce

30. 6. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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