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Simulation of imaging effects of very high resolution SAR systems

Anglberger, Harald and Speck, Rainer and Suess, Helmut (2013) Simulation of imaging effects of very high resolution SAR systems. In: Proceedings of SPIE: SAR Image Analysis, Modeling, and Techniques XIII. SPIE Remote Sensing 2013, 2013-09-23 - 2013-09-26, Dresden, Deutschland. doi: 10.1117/12.2029538.

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Current space borne synthetic aperture radar (SAR) systems are able to provide users with high resolution image data of around one meter. Focusing on systems operating in the X-band, this value is not the end of possible improvements in resolution. There still lies a great potential in an increase of bandwidth of the radar signal itself and also in a significant enlargement of the synthetic aperture. From the technical point of view this certainly is a challenge, but could be possible for future space borne SAR missions already with current state of the art hardware. As a matter of proof TerraSAR-X introduces a new staring spotlight image product that significantly improves the azimuthal resolution to around a quarter of a meter. The technical realization of the very high resolution SAR system is not the only obstacle to overcome. Especially the increase of Doppler bandwidth along the synthetic aperture requests special treatment and considerations in system design from a signal processing’s point of view. Challenges like orbital accuracy, tropospheric effects, approximations in SAR processing methods and depth-of-focus issues have to be addressed. In this paper, most of these challenges are studied separately by performing parametric simulations for single point targets and also for complex signatures of an airplane. A SAR parameter set comparable to those of the high resolution sliding spotlight mode and the new staring spotlight mode of TerraSAR-X are used for simulation.

Item URL in elib:https://elib.dlr.de/84539/
Document Type:Conference or Workshop Item (Speech)
Title:Simulation of imaging effects of very high resolution SAR systems
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Journal or Publication Title:Proceedings of SPIE: SAR Image Analysis, Modeling, and Techniques XIII
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Series Name:SPIE Remote Sensing
Keywords:high resolution, space borne, SAR, defocusing, simulation
Event Title:SPIE Remote Sensing 2013
Event Location:Dresden, Deutschland
Event Type:international Conference
Event Dates:2013-09-23 - 2013-09-26
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Security-relevant Earth Observation
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Reconnaissance and Security
Deposited By: Anglberger, Harald
Deposited On:25 Oct 2013 11:36
Last Modified:20 Jul 2023 09:22

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