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Stuck Bit Error Identification for the TerraSAR-X and TanDEM-X Onboard Memory

Bojarski, Allan and Bachmann, Markus and Kraus, Thomas and Steinbrecher, Ulrich (2022) Stuck Bit Error Identification for the TerraSAR-X and TanDEM-X Onboard Memory. In: Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR (14), pp. 418-423. VDE Publishing House. European Conference on Synthetic Aperture Radar (EUSAR), 2022-07-25 - 2022-07-27, Leipzig, Germany. ISBN 978-3-8007-5823-4. ISSN 2197-4403.

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Abstract

Errors in memory storage devices in the form of erroneous bits induced by radiation are a common issue for every space- craft in orbit. Therefore, well established techniques detect and directly correct these errors in the storage hardware. Sporadically single memory cells can temporarily get “stuck” at a false bit in which case they cannot be corrected. Those stuck bits can persist up to several months generating the same errors during every memory scrubbing cycle. In order to assess the current memory status a method to distinguish between regular and stuck-bit errors is needed. This paper therefore presents a classification approach based on the DBSCAN method where stuck bits are identified as outliers and clustered accordingly. The approach first is verified with simulated data that resembles the error structure of memory errors on TerraSAR-X and TanDEM-X. Subsequently, the method is validated with the memory errors recorded by both satellites throughout their lifetime.

Item URL in elib:https://elib.dlr.de/186315/
Document Type:Conference or Workshop Item (Speech)
Title:Stuck Bit Error Identification for the TerraSAR-X and TanDEM-X Onboard Memory
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Bojarski, AllanAllan.Bojarski (at) dlr.dehttps://orcid.org/0000-0002-6729-6665
Bachmann, MarkusMarkus.Bachmann (at) dlr.dehttps://orcid.org/0000-0002-6028-4303
Kraus, ThomasT.Kraus (at) dlr.dehttps://orcid.org/0000-0002-9486-7371
Steinbrecher, UlrichUlrich.Steinbrecher (at) dlr.dehttps://orcid.org/0000-0002-3704-3886
Date:2022
Journal or Publication Title:Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Page Range:pp. 418-423
Publisher:VDE Publishing House
ISSN:2197-4403
ISBN:978-3-8007-5823-4
Status:Published
Keywords:TanDEM-X, SAR Systems and Missions, SAR Subsystems, Classification
Event Title:European Conference on Synthetic Aperture Radar (EUSAR)
Event Location:Leipzig, Germany
Event Type:international Conference
Event Dates:2022-07-25 - 2022-07-27
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 - TSX/TDX Mission Operations
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Spaceborne SAR Systems
Deposited By: Bojarski, Allan
Deposited On:09 May 2022 09:58
Last Modified:21 Nov 2022 06:28

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