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| Titel |
On the error estimation of multi-spacecraft timing method |
| VerfasserIn |
X.-Z. Zhou, Z. Y. Pu, Q.-G. Zong, P. Song, S. Y. Fu, J. Wang, H. Zhang |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 27, no. 10 ; Nr. 27, no. 10 (2009-10-20), S.3949-3955 |
| Datensatznummer |
250016683
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| Publikation (Nr.) |
 copernicus.org/angeo-27-3949-2009.pdf |
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| Zusammenfassung |
| The multi-spacecraft timing method, a data analysis technique
based on four-point measurements to obtain the normal vector and
velocity of an observed boundary, has been widely applied to
various discontinuities in the solar wind and the magnetosphere
studies. In this paper, we perform simulations to analyze the
errors of the timing method by specifying the error sources to the
uncertainties in the determination of the time delays between each
spacecraft pair. It is shown that the timing method may have large
errors if either the spacecraft tetrahedron is largely elongated
and/or flattened, or the discontinuity moves much slower than the
constellation itself. The results, therefore, suggest that some of
the applications of the timing method require reexamination with
special caution, in particular for the studies of the slow-moving
discontinuities associated with, for example, the plasmaspheric
plumes. |
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