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| Titel |
Spatial resolution from repeat orbit configurations: the Colombo-Nyquist rule revisited |
| VerfasserIn |
N. Sneeuw, E. J. O. Schrama, P. N. A. M. Visser, M. Weigelt |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250021243
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| Zusammenfassung |
| The groundtrack of a repeat orbit configuration limits the spatial resolution of gravity
recovery. Colombo (1984) formulated a Nyquist-type rule-of-thumb that states that a gravity
recovery up till degree L requires a repeat orbit with at least 2L revolutions. This rule,
however, contradicts our experience in gravity field simulations and recovery from CHAMP
and GRACE. In this contribution we revisit the the Colombo-Nyquist rule and scrutinize its
rationale. We argue that, under certain conditions, the rule can be relaxed significantly. For
instance, L or even less revolutions may already suffice for a recovery till degree L. |
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