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Estimation of Drift of Equatorial Ionoshere of Post Sunset-Sector by Means of Low Frequency Spaceborne SAR

Kim, Jun Su and Sato, Hiroatsu and Papathanassiou, Konstantinos (2016) Estimation of Drift of Equatorial Ionoshere of Post Sunset-Sector by Means of Low Frequency Spaceborne SAR. In: IGARSS 2016. IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2016-07-10 - 2016-07-15, Beijing, China.

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Abstract

Recent studies indicate the potential of low frequency space-borne SAR sensors to monitor and quantify structure and dynamics of ionosphere [1-3]. At the post-sunset sector of the equatorial ionosphere, the instability of the electron den-sity often induces plasma bubbles aligned to the geomagnet-ic field [4], whose effects are seen as distinctive stripe pat-terns on SAR data [5-6]. At the same time, the free-electrons in this sector of ionosphere drift eastward [7]. This paper explores this effect captured on ALOS and ALOS-2 SAR data to estimate the drift velocity and altitude of the bubbles [8]. Based on the azimuth sub-band of SAR data analysis the height and velocities are estimated, and compared to the measurements from ionosonde. The sensitivity of the esti-mates is analyzed, and finally a possible observation config-uration for further ionospheric study is proposed.

Item URL in elib:https://elib.dlr.de/103867/
Document Type:Conference or Workshop Item (Speech)
Title:Estimation of Drift of Equatorial Ionoshere of Post Sunset-Sector by Means of Low Frequency Spaceborne SAR
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kim, Jun SuJunsu.Kim (at) dlr.deUNSPECIFIED
Sato, HiroatsuHiroatsu.Sato (at) dlr.deUNSPECIFIED
Papathanassiou, KonstantinosKostas.Papathanassiou (at) dlr.deUNSPECIFIED
Date:15 July 2016
Journal or Publication Title:IGARSS 2016
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:SAR, Ionosphere, ALOS PALSAR
Event Title:IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Event Location:Beijing, China
Event Type:international Conference
Event Dates:2016-07-10 - 2016-07-15
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication and Navigation
DLR - Research area:Raumfahrt
DLR - Program:R KN - Kommunikation und Navigation
DLR - Research theme (Project):R - Vorhaben Ionosphäre
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Institute of Communication and Navigation > Navigation
Deposited By: Kim, Junsu
Deposited On:19 Dec 2016 08:19
Last Modified:17 Jan 2017 12:00

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