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Performance evaluation of the CDN1 altimetry Cal/Val transponder to internal and external constituents of uncertainty

Mertikas Stylianos, Donlon Craig, Mavrocordatos Constantine, Piretzidis Dimitrios, Kokolakis Konstantinos, Cullen Robert, Matsakis Demetrios, Borde Franck, Fornari Marco, Boy François, Tripolitsiotis Achilleas, Guinle Thierry, Frantzis Xenofon, Duesmann Berthyl

Απλή Εγγραφή


URIhttp://purl.tuc.gr/dl/dias/F5A4D547-BC87-4327-AD70-ABF0744E5AA5-
Αναγνωριστικόhttps://doi.org/10.1016/j.asr.2022.07.001-
Αναγνωριστικόhttps://www.sciencedirect.com/science/article/pii/S0273117722005750-
Γλώσσαen-
Μέγεθος22 pagesen
ΤίτλοςPerformance evaluation of the CDN1 altimetry Cal/Val transponder to internal and external constituents of uncertaintyen
ΔημιουργόςMertikas Stylianosen
ΔημιουργόςΜερτικας Στυλιανοςel
ΔημιουργόςDonlon Craigen
ΔημιουργόςMavrocordatos Constantineen
ΔημιουργόςPiretzidis Dimitriosen
ΔημιουργόςΠιρετζιδης Δημητριοςel
ΔημιουργόςKokolakis Konstantinosen
ΔημιουργόςΚοκολακης Κωνσταντινοςel
ΔημιουργόςCullen Roberten
ΔημιουργόςMatsakis Demetriosen
ΔημιουργόςBorde Francken
ΔημιουργόςFornari Marcoen
ΔημιουργόςBoy Françoisen
ΔημιουργόςTripolitsiotis Achilleasen
ΔημιουργόςΤριπολιτσιωτης Αχιλλεαςel
ΔημιουργόςGuinle Thierryen
ΔημιουργόςFrantzis Xenofonen
ΔημιουργόςΦραντζης Ξενοφωνel
ΔημιουργόςDuesmann Berthylen
ΕκδότηςElsevieren
ΠεριγραφήThis work has been produced with the financial assistance of the European Union and the European Space Agency under the project FRM4S6 (Fiducial Reference Systems for Sentinel-6, No. 4000129892/20/NL/FF/ab). en
ΠερίληψηA microwave range transponder has been operating at the CDN1 Cal/Val site on the mountains of Crete for about 6 years, to calibrate international satellite radar altimeters in the Ku-band. This transponder is part of the European Space Agency Permanent Facility for Altimetry Calibration, and has been producing a continuous time series of range biases for Sentinel-3A, Sentinel-3B, Jason-2, Jason-3 and CryoSat-2 since 2015. As of 18-Dec-2020, the CDN1 transponder has allowed calibration of the new operational altimeter of Sentinel-6 MF satellite as it flies in tandem with Jason-3. This work investigates range biases derived from the long time series of Jason-3 (and subsequently that of Sentinel-6 MF since both follow the same orbit) and tries to isolate systematic and random constituents in the produced calibration results of the transponder. Systematic components in the dispersion of transponder biases are identified as of internal origin, coming from irregularities in the transponder instrument itself and its setting, and of external cause arising from the altimeter, satellite orbit, Earth’s position in space, geodynamic effects and others. Draconic harmonics, principally the 58-day period, play a significant role in the transponder results and create cyclic trends of maximum amplitude of 17 mm at times in the calibration results. The attitude of the satellite body as it changes for solar panel orientation contributes an offset of about 7 mm when yaw rotation is off its central position, and the atmospheric, water mass and non-tidal ocean loadings are responsible for an annual systematic signal of 10 mm. At the time of writing, all other constituents of uncertainty seem random in nature and not significantly influential, although humidity requires further investigation in relation to the final transponder calibration results.en
ΤύποςPeer-Reviewed Journal Publicationen
ΤύποςΔημοσίευση σε Περιοδικό με Κριτέςel
Άδεια Χρήσηςhttp://creativecommons.org/licenses/by/4.0/en
Ημερομηνία2024-01-16-
Ημερομηνία Δημοσίευσης2022-
Θεματική ΚατηγορίαKu-band transponderen
Θεματική ΚατηγορίαRadar altimeter calibrationen
Θεματική ΚατηγορίαFactor analysisen
Θεματική ΚατηγορίαExploratory data analysisen
Θεματική ΚατηγορίαDraconic harmonicsen
Θεματική ΚατηγορίαJason-3en
Θεματική ΚατηγορίαSentinel-6en
Βιβλιογραφική ΑναφοράS. P. Mertikas, C. Donlon, C. Mavrocordatos, D. Piretzidis, C. Kokolakis, R. Cullen, D. Matsakis, F. Borde, M. Fornari, F. Boy, A. Tripolitsiotis, T. Guinle, X. Frantzis, and B. Duesmann, “Performance evaluation of the CDN1 altimetry Cal/Val transponder to internal and external constituents of uncertainty,” Adv. Space Res., vol. 70, no. 8, pp. 2458-2479, Oct. 2022, doi: 10.1016/j.asr.2022.07.001.en

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