Müller, Vitali und Hauk, Markus und Misfeldt, Malte und Müller, Laura und Wegener, Henry und Yan, Yihao und Heinzel, Gerhard (2022) Comparing GRACE-FO KBR and LRI Ranging Data with Focus on Carrier Frequency Variations. Remote Sensing, 14 (17). Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/rs14174335. ISSN 2072-4292.
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Offizielle URL: https://www.mdpi.com/2072-4292/14/17/4335
Kurzfassung
The GRACE Follow-On satellite mission measures distance variations between its two satellites in order to derive monthly gravity field maps, indicating mass variability on Earth on a scale of a few 100 km originating from hydrology, seismology, climatology and other sources. This mission hosts two ranging instruments, a conventional microwave system based on K(a)-band ranging (KBR) and a novel laser ranging instrument (LRI), both relying on interferometric phase readout. In this paper, we show how the phase measurements can be converted into range data using a time-dependent carrier frequency (or wavelength) that takes into account potential intraday variability in the microwave or laser frequency. Moreover, we analyze the KBR-LRI residuals and discuss which error and noise contributors limit the residuals at high and low Fourier frequencies. It turns out that the agreement between KBR and LRI biased range observations can be slightly improved by considering intraday carrier frequency variations in the processing. Although the effect is probably small enough to have little relevance for gravity field determination at the current precision level, this analysis is of relevance for detailed instrument characterization and potentially for future more precise missions.
elib-URL des Eintrags: | https://elib.dlr.de/188926/ | ||||||||||||||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||||||||||
Titel: | Comparing GRACE-FO KBR and LRI Ranging Data with Focus on Carrier Frequency Variations | ||||||||||||||||||||||||||||||||
Autoren: |
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Datum: | 1 September 2022 | ||||||||||||||||||||||||||||||||
Erschienen in: | Remote Sensing | ||||||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||||||||||||||
Gold Open Access: | Ja | ||||||||||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||||||||||
Band: | 14 | ||||||||||||||||||||||||||||||||
DOI: | 10.3390/rs14174335 | ||||||||||||||||||||||||||||||||
Verlag: | Multidisciplinary Digital Publishing Institute (MDPI) | ||||||||||||||||||||||||||||||||
ISSN: | 2072-4292 | ||||||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||||||
Stichwörter: | GRACE Follow-On; instrumentation; laser ranging; microwave ranging | ||||||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||||||||||
HGF - Programm: | Raumfahrt | ||||||||||||||||||||||||||||||||
HGF - Programmthema: | Kommunikation, Navigation, Quantentechnologien | ||||||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | R KNQ - Kommunikation, Navigation, Quantentechnologie | ||||||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - Data analysis, instrument characterization GRACE-FO | ||||||||||||||||||||||||||||||||
Standort: | Hannover | ||||||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Satellitengeodäsie und Inertialsensorik > Quantenoptische Sensorik | ||||||||||||||||||||||||||||||||
Hinterlegt von: | Koch, Alexander | ||||||||||||||||||||||||||||||||
Hinterlegt am: | 13 Okt 2022 11:01 | ||||||||||||||||||||||||||||||||
Letzte Änderung: | 13 Okt 2022 11:01 |
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