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TerraSAR-X Dual Receive Antenna Mode, Calibration and GMTI Performance Assessment

Gabele, Martina and Braeutigam, Benjamin and Schulze, Daniel and Steinbrecher, Ulrich and Tous-Ramon, Nuria and Younis, Marwan (2009) TerraSAR-X Dual Receive Antenna Mode, Calibration and GMTI Performance Assessment. IEEE Geoscience and Remote Sensing Symposium (IGARSS), 2009-07-13 - 2009-07-17, Cape Town, South Africa.

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Abstract

Synthetic aperture radar with multiple channels separated in along-track direction allows for GMTI such as detection of road traffic. With TerraSAR-X two receive channels separated in along-track direction can either be realized through switching between the fore and aft antenna halves on a pulse to pulse basis, or with the dual receive antenna (DRA) mode. While the switching in the single channel switched aperture mode is implemented by alternately applying attenuation to the fore and aft antenna halves, in the DRA mode the signals of the fore and aft antenna halves are combined by a hybrid coupler generating the sum and difference channel data. By use of the redundant receiver unit both channels are sampled separately. Fore and aft channel signals have to be reconstructed in the signal processing step. In this paper the fore and aft channel reconstruction in the TerraSAR-X dual receive antenna mode is described. Then, the residual imbalances are modeled into the transfer function in order to analyze the quality of signal reconstruction and draw conclusions on the ground moving target indication (GMTI) performance of this two-channel mode. The theoretical results derived are validated with experimental data and GMTI results are shown.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:TerraSAR-X Dual Receive Antenna Mode, Calibration and GMTI Performance Assessment
Authors:
AuthorsInstitution or Email of Authors
Gabele, MartinaUNSPECIFIED
Braeutigam, BenjaminUNSPECIFIED
Schulze, DanielUNSPECIFIED
Steinbrecher, UlrichUNSPECIFIED
Tous-Ramon, NuriaUNSPECIFIED
Younis, MarwanUNSPECIFIED
Date:April 2009
Refereed publication:No
In Open Access:Yes
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:space-based radar, TerraSAR-X dual receive antenna mode, calibration, synthetic aperture radar, ground moving target indication
Event Title:IEEE Geoscience and Remote Sensing Symposium (IGARSS)
Event Location:Cape Town, South Africa
Event Type:international Conference
Event Dates:2009-07-13 - 2009-07-17
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Transport
HGF - Program Themes:Traffic Management
DLR - Research area:Transport
DLR - Program:V VM - Verkehrsmanagement
DLR - Research theme (Project):V - ARGOS (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Microwaves and Radar Institute
Deposited By: Martina Gabele
Deposited On:06 Apr 2009
Last Modified:02 Nov 2009 16:01

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