elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Contact | Deutsch
Fontsize: [-] Text [+]

On the Suitability of TerraSAR-X Split Antenna Mode for Current Measurements by Along-Track Interferometry

Romeiser, Roland and Breit, Helko and Eineder, Michael and Runge, Hartmut and Flamant, Pierre and Jong, Karin and Vogelzang, Jur (2003) On the Suitability of TerraSAR-X Split Antenna Mode for Current Measurements by Along-Track Interferometry. In: Proceedings of IGARSS'03, CD-ROM. IGARSS 2003, Toulouse.

Full text not available from this repository.

Abstract

Latest concepts for the TerraSAR-X hardware design include the availability of a split antenna mode, in which the fore and aft halves of the SAR antenna array with a total length of 4.8 m can act as separate receiving antennas for along-track interferometry (ATI). The effective ATI time lag will be 0.17 ms. We discuss in this paper whether the split antenna mode is suitable for ocean current measurements. Typical (tidal) currents in coastal areas are on the order of 1 to 2 m/s. To measure them, the ATI time lag should ideally be 20 times longer than the time lag of TerraSAR-X. Furthermore, the backscattered power from the ocean at low wind speeds can be below the noise floor of the instrument. However, the high resolution of TerraSAR-X permits averaging over many pixels to reduce noise. Simulated data products suggest that TerraSAR-X will be capable of measuring currents with satisfactory accuracy at a spatial resolution of about 1 km, which will be sufficient for many applications.

Document Type:Conference or Workshop Item (Speech)
Additional Information: LIDO-Berichtsjahr=2003,
Title:On the Suitability of TerraSAR-X Split Antenna Mode for Current Measurements by Along-Track Interferometry
Authors:
AuthorsInstitution or Email of Authors
Romeiser, RolandUni Hamburg, Inst. of Oceanography
Breit, HelkoUNSPECIFIED
Eineder, MichaelUNSPECIFIED
Runge, HartmutUNSPECIFIED
Flamant, PierreUniversity of Hawaii
Jong, KarinKNMI
Vogelzang, JurKNMI
Date:2003
Journal or Publication Title:Proceedings of IGARSS'03
Volume:CD-ROM
Status:Published
Keywords:Along track interferometry, ocean currents, TerraSAR-X, SRTM
Event Title:IGARSS 2003, Toulouse
Organizer:IEEE
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):UNSPECIFIED
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute
Deposited By: Cornelia Roehl
Deposited On:09 May 2006
Last Modified:06 Jan 2010 22:18

Repository Staff Only: item control page

Browse
Search
Help & Contact
Informationen
electronic library is running on EPrints 3.3.12
Copyright © 2008-2012 German Aerospace Center (DLR). All rights reserved.