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TOPS Imaging Mode: Data-based Estimation of Antenna Pointing and Azimuth Steered Antenna Pattern

Wollstadt, Steffen and Prats, Pau and Geudtner, Dirk (2014) TOPS Imaging Mode: Data-based Estimation of Antenna Pointing and Azimuth Steered Antenna Pattern. European Conference on Synthetic Aperture Radar (EUSAR), 2014-06-03 - 2014-06-05, Berlin, Germany. ISBN 978 3 8007 3607 2

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Abstract

In this paper two issues concerning the antenna mis-pointing and the antenna pattern estimation for the TOPS imaging mode are presented. Both analyses require a demodulation of the raw data spectrum to account for the effect of azimuth antenna beam steering. A sensitivity analysis of this deramping function as well as results of the antenna mis-pointing and Doppler centroid estimation using TerraSAR-X TOPS data are presented. A second approach investigated in this paper is the possibility to estimate the two-way azimuth antenna pattern using data acquired over homogeneous areas, e.g., rainforest, such that no specific ground equipment, like transponders, is required. However, this method requires certain instrument capabilities and is only feasible for analysis of the 3dB-beam width of the steered antenna pattern. Exemplary results are shown with TerraSAR-X data.

Item URL in elib:https://elib.dlr.de/86348/
Document Type:Conference or Workshop Item (Speech)
Title:TOPS Imaging Mode: Data-based Estimation of Antenna Pointing and Azimuth Steered Antenna Pattern
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Wollstadt, SteffenUNSPECIFIEDUNSPECIFIED
Prats, PauUNSPECIFIEDUNSPECIFIED
Geudtner, DirkEuropean Space AgencyUNSPECIFIED
Date:5 June 2014
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1271-1274
ISBN:978 3 8007 3607 2
Status:Published
Keywords:Terrain Observation by Progressive Scan (TOPS), TerraSAR-X data, Calibration, Pointing estimation, Pattern estimation,
Event Title:European Conference on Synthetic Aperture Radar (EUSAR)
Event Location:Berlin, Germany
Event Type:international Conference
Event Dates:2014-06-03 - 2014-06-05
Organizer:VDE
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Technologie Experimente TSX und TDX
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Microwaves and Radar Institute
Microwaves and Radar Institute > SAR Technology
Deposited By: Wollstadt, Steffen
Deposited On:06 Dec 2013 10:01
Last Modified:12 Jan 2015 18:43

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