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A distributed approach to efficient time-domain SAR processing

Reigber, Andreas and Jäger, Marc and Dietzsch, Andreas and Hänsch, Ronny and Weber, Michael and Przybyl, Heiko and Prats, Pau (2007) A distributed approach to efficient time-domain SAR processing. In: Proceedings of the IEEE Geoscience and Remote Sensing Symposium (IGARSS). IEEE. IEEE Geoscience and Remote Sensing Symposium (IGARSS), 2007-07-23 - 2007-07-27, Barcelona, Spain.

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Abstract

This paper presents a distributed approach for timedomain focusing, which significantly enhances the overall efficiency by distributing the computational load across a (potentially large) number of networked computers. The system described includes the so-called master, responsible for pre-processing, the distribution of fragments of raw-data data and the collection of processed image fragments. Fragments of raw-data are passed to so-called slaves, any number of which can be connected to the master, which are responsible for the focusing itself. Master and slave actively communicate over the network to organise the entire process in a scalable manner. In this way, time-domain processing can be accelerated by a factor that is virtually inear in the number of participating slaves. This paper summarises the urrent status of software development, realised in a platform-independent way using the IDL and Java languages. Additionally, some preliminary evaluations of performance, scalability and the required network infrastructure are given. Some examples of SAR data, acquired by the airborne sensor E-SAR of DLR, and processed with the system described are shown.

Document Type:Conference or Workshop Item (Paper, Poster)
Additional Information:©2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Title:A distributed approach to efficient time-domain SAR processing
Authors:
AuthorsInstitution or Email of Authors
Reigber, AndreasBerlin University of Technology (TUB)
Jäger, MarcBerlin University of Technology (TUB)
Dietzsch, AndreasBerlin University of Technology (TUB)
Hänsch, RonnyBerlin University of Technology (TUB)
Weber, MichaelBerlin University of Technology (TUB)
Przybyl, HeikoBerlin University of Technology (TUB)
Prats, PauUNSPECIFIED
Date:July 2007
Journal or Publication Title:Proceedings of the IEEE Geoscience and Remote Sensing Symposium (IGARSS)
Refereed publication:No
In ISI Web of Science:No
Publisher:IEEE
Status:Published
Keywords:SAR processing, time-domain processing, distributed processing, motion compensation
Event Title:IEEE Geoscience and Remote Sensing Symposium (IGARSS)
Event Location:Barcelona, Spain
Event Type:international Conference
Event Dates:2007-07-23 - 2007-07-27
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):W - Vorhaben Flugzeug-SAR (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute
Microwaves and Radar Institute > SAR Technology
Deposited By: Dr. Pau Prats
Deposited On:31 Jul 2007
Last Modified:12 Dec 2013 20:26

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