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A review of geodetic parameters

Published online by Cambridge University Press:  14 August 2015

William M. Kaula
William M. Kaula*
Affiliation:
Goddard Space Flight Center, N. A. S. A., Greenbelt, Maryland, U. S. A.

Abstract

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It is recommended that the parametric values which are currently most used in orbital computation be adopted as provisional standards rather than those which may be the best available and from which they differ only slightly. It is remarked that the most serious geodetic errors affecting astronomy are tracking station positions. Standard methods of describing positions are suggested.

Résumé. — L'auteur recommande qu'on choisisse comme valeurs conventionnelles provisoires des paramètres, celles qui sont le plus utilisées dans les calculs d'orbites, plutôt que les meilleures possibles, dont elles diffèrent d'ailleurs peu. Il remarque que les erreurs les plus importantes d'origine géodésique affectant les constantes astronomiques portent sur les positions des stations d'observation. Il propose des méthodes types pour décrire les positions de ces stations.

Zusammenfassung. — Es wird empfohlen, die Werte der Parameter vorläufig anzunehmen, die in der Bahnrechnung am häufigsten verwendet werden, und nicht diejenigen Werte, die gerade als die besten bekannt sind, zumal sie von diesen nur wenig abweichen. Ferner wird erwähnt, dass die geodätischen Fehler, welche sich auf die astronomischen Ergebnisse am stärksten auswirken, diejenigen in den Örtern der Beobachtungsstationen sind. Zur Angabe dieser Örter werden verbindliche Methoden vorgeschlagen.

Резюме. — Автор рекомендует выбирать в качество предварительных условных значений параметров, не возможно наилучшие значения, а предпочтительно те, которые чаще всего употребляются в вычислениях орбит. К тому-же эти значения мало отличаются друг от друга. Автор отмечает, что самые значительные ошибки геодезического происхождения, которые влияют на астрономические постоянные, являются положения станций где ведутся наблюдения. Он предлагает стандартные методы для определения этих положений.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 21: The System of Astronomical Constants , 1965 , pp. 21 - 31
Copyright
Copyright © CNRS 1965 

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