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Potential Contributions of the DESDynI Mission to Ionospheric Research

Meyer, Franz und Kim, Junsu und Brcic, Ramon und Pi, Xiaoqing (2011) Potential Contributions of the DESDynI Mission to Ionospheric Research. In: Proceedings of the IEEE International Geoscience and Remote Sensing Symposium, Seiten 1-4. IEEE. IGARSS 2011, 24.-29. Juli 2011, Vancouver, Canada. ISBN 978-1-4577-1004-9

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Offizielle URL: http://www.cmsworldwide.com/IGARSS2011/default.asp


Ionospheric propagation effects can have significant impact on the signal properties of low-frequency Synthetic Aperture Radar (SAR) systems. Recently, theoretical analyses of ionospheric distortions in low-frequency SAR signals have indicated a multitude of effects that are likely to affect the quality of SAR, interferometric SAR (InSAR), and polarimetric SAR (PolSAR) data [1-6]. Methods have been developed that are able to detect ionospheric effects in SAR data on a wide range of spatial scales and allow high resolution ionospheric mapping with high accuracy [3], [4], [7]. NASA’s Deformation, Ecosystem Structure and Dynamics of Ice (DESDynI) mission carries a spaceborne L-band synthetic aperture radar (SAR) with multiple polarizations to provide information on solid earth deformation, terrestrial vegetation structure, and ice dynamics. Besides providing improved performance and reliability of SAR for monitoring surface deformation, the L-band carrier frequency provides a means for mapping properties of the ionosphere with high spatial resolution and unprecedented spatial coverage. This paper describes the performance and benefits of DESDynI for ionospheric mapping. Specifically, we quantify the type, sensitivity, and accuracy of ionospheric measurements derived by a DESDynI-like system. We also analyze the achievable spatial and temporal sampling of ionospheric constituents at different areas on the globe and assess the value of the derived information for specific ionospheric research topics. After summarizing the physical origin of ionospheric signals in SAR data, Section 2 introduces several methods for extracting ionospheric information from DESDynI data. For each method, information on the measurement principle is provided and the range of extractable ionospheric parameters is determined. A first concept for an optimized ionospheric processor is shown that extends the performance of existing technology by maximizing the exploited information and increasing estimation robustness. An error analysis of the presented technology is shown in Section 3, where achievable accuracies of ionospheric measurements are analyzed for different retrieval methods. In Section 4 the benefit of SAR-based ionospheric data for ionospheric research is evaluated. In examples we examine its value for analyzing turbulent ionospheric processes in polar and equatorial regions, and for evaluating the structure of traveling ionospheric disturbances (TIDs) at various spatial scales.

Dokumentart:Konferenzbeitrag (Vortrag)
Zusätzliche Informationen:abstract only
Titel:Potential Contributions of the DESDynI Mission to Ionospheric Research
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iD
Meyer, FranzUniversity of Alaska FairbanksNICHT SPEZIFIZIERT
Datum:Juli 2011
Erschienen in:Proceedings of the IEEE International Geoscience and Remote Sensing Symposium
Referierte Publikation:Nein
In Open Access:Nein
In ISI Web of Science:Nein
Seitenbereich:Seiten 1-4
Stichwörter:SAR, ionosphere, ionospheric mapping
Veranstaltungstitel:IGARSS 2011
Veranstaltungsort:Vancouver, Canada
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:24.-29. Juli 2011
Veranstalter :IEEE
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erdbeobachtung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):R - Vorhaben Informationstechnische Systeme für die Fernerkundung (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Hochfrequenztechnik und Radarsysteme > Radarkonzepte
Institut für Methodik der Fernerkundung > SAR-Signalverarbeitung
Hinterlegt von: Brcic, Dr. Ramon
Hinterlegt am:05 Okt 2011 14:41
Letzte Änderung:08 Mai 2014 23:22

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