Impact of groundtrack pattern of a single pair mission on the gravity recovery quality

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dc.identifier.uri http://dx.doi.org/10.15488/4245
dc.identifier.uri https://www.repo.uni-hannover.de/handle/123456789/4279
dc.contributor.author Iran-Pour, Siavash
dc.contributor.author Weigelt, Matthias
dc.contributor.author Amiri-Simkooei, Alireza
dc.contributor.author Sneeuw, Nico
dc.date.accessioned 2018-12-20T14:20:23Z
dc.date.available 2018-12-20T14:20:23Z
dc.date.issued 2018
dc.identifier.citation Iran-Pour, S.; Weigelt, M.; Amiri-Simkooei, A.; Sneeuw, N.: Impact of groundtrack pattern of a single pair mission on the gravity recovery quality. In: Geosciences 8 (2018), Nr. 9, 315. DOI: https://doi.org/10.3390/geosciences8090315
dc.description.abstract For future gravity satellite missions, aliasing of high frequency geophysical signals into the lower frequencies is one of the most challenging obstacles to recovering true gravity signals, i.e., to recover the truth. Several studies have investigated the impact of satellite groundtrack pattern on the quality of gravity recovery. Among those works, the concept of sub-cycle has been discussed as well. However, most of that research has focused on the impact of sampling patterns on global solutions up to a fixed maximum spherical harmonic coefficient, rather than the associated coefficient defined by the Colombo-Nyquist and modified Colombo-Nyquist rules. This work tries to look more closely into the influence of sampling patterns on the gravity recovery quality for global and regional studies when the Colombo-Nyquist and modified Colombo-Nyquist rules apply. For the regional study, the impact of groundtrack patterns of different satellite constellation scenarios are investigated for a hydrological basin in central Africa. The quality of the gravity products are assessed by different metrics, e.g., by spatial covariance representation. The potential meaning of the sub-cycle concept in terms of global and local impacts is also investigated by different repeat-orbit scenarios with even and odd parities. Different solution scenarios in terms of the original and modified Colombo-Nyquist rules will be discussed. The results of our study emphasize the impact of maximum harmonics of the recovery, the influence of sub-cycle on the local gravity recovery and the mission formation impact on the recovery error. eng
dc.language.iso eng
dc.publisher Basel : MDPI AG
dc.relation.ispartofseries Geosciences 8 (2018), Nr. 9
dc.rights CC BY 4.0 Unported
dc.rights.uri https://creativecommons.org/licenses/by/4.0/
dc.subject Gravity field recovery eng
dc.subject Groundtrack eng
dc.subject Sampling eng
dc.subject.ddc 550 | Geowissenschaften ger
dc.title Impact of groundtrack pattern of a single pair mission on the gravity recovery quality
dc.type article
dc.type Text
dc.relation.issn 20763263
dc.relation.doi https://doi.org/10.3390/geosciences8090315
dc.bibliographicCitation.issue 9
dc.bibliographicCitation.volume 8
dc.bibliographicCitation.firstPage 315
dc.description.version publishedVersion
tib.accessRights frei zug�nglich


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