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ScOSA - Scalable On-Board Computing for Space Avionics

Treudler, Carl Johann and Benninghoff, Heike and Borchers, Kai and Brunner, Bernhard and Cremer, Jan and Dumke, Michael and Gärtner, Thomas and Höflinger, Kilian Johann and Lüdtke, Daniel and Peng, Ting and Risse, Eicke-Alexander and Schwenk, Kurt and Stelzer, Martin and Ulmer, Moritz and Vellas, Simon and Westerdorff, Karsten (2018) ScOSA - Scalable On-Board Computing for Space Avionics. In: Proceedings of the International Astronautical Congress, IAC. IAC 2018, 1.-5.Okt 2018, Deutschland, Bremen.

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Abstract

Computational demands on spacecraft have continuously increased for years whereby available space qualified hardware is not capable of satisfying these requirements completely. This paper introduces a way to overcome this problem by combining highly reliable space qualified hardware with highly performant commercial off-the-shelf (COTS) components. This combination of hardware enabled us to develop a new type of on-board computing (OBC) system, called ScOSA (Scalable On-Board Computing for Space Avionics). A ScOSA system uses a distributed approach whereas it consists of multiple nodes. They are classified as reliable or high performance nodes. The reliable nodes are based on radiation-hardened Leon3 processors, the high-performance nodes on COTS Xilinx Zynq (CPU and FPGA). All nodes are connected by a SpaceWire network with a meshed topology that provides redundant data paths to establish fault tolerance. A large number of existing systems can be connected to our system given that SpaceWire is widely used within the space domain. ScOSA has additional capabilities during operation that set it apart from traditional on-board computing systems. During runtime a dynamic reconfiguration of the whole system can be performed. By this, faulty nodes can be removed or recovered nodes can be reintegrated into the system. Additionally, computation tasks can be started, stopped or shifted between all active nodes. Also, connected FPGAs can be reprogrammed. As a consequence, these reconfiguration capabilities can be used to fulfill changing requirements without exchanging the underlying hardware. This can also be used to handle different spacecraft modes or mission phases. The contribution of this paper is to explain the details of the ScOSA architecture, implementation and its functionality. Additionally, we will show the results of running representative applications from the space robotics, earth-observation and satellite avionics domains. These applications were selected for evaluating the system capabilities and include, among others, autonomous navigation and capture operations, stereo image processing and optical ship detection. Testing and demonstration will be done in Hardware-in-the-Loop simulators or on robotic testbeds (namely DLR’s EPOS and OOS-Sim).

Item URL in elib:https://elib.dlr.de/122492/
Document Type:Conference or Workshop Item (Speech)
Title:ScOSA - Scalable On-Board Computing for Space Avionics
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Treudler, Carl JohannCarl.Treudler (at) dlr.dehttps://orcid.org/0000-0002-0794-4931
Benninghoff, HeikeHeike.Benninghoff (at) dlr.dehttps://orcid.org/0000-0003-0836-9171
Borchers, Kaikai.borchers (at) dlr.deUNSPECIFIED
Brunner, BernhardBernhard.Brunner (at) dlr.deUNSPECIFIED
Cremer, JanJan.Cremer (at) dlr.deUNSPECIFIED
Dumke, MichaelMichael.Dumke (at) dlr.dehttps://orcid.org/0000-0002-5587-7884
Gärtner, Thomasthomas.gaertner (at) dlr.dehttps://orcid.org/0000-0001-5404-2482
Höflinger, Kilian JohannKilian.Hoeflinger (at) dlr.dehttps://orcid.org/0000-0002-7565-8232
Lüdtke, DanielDaniel.Luedtke (at) dlr.dehttps://orcid.org/0000-0002-6758-1562
Peng, TingTing.Peng (at) dlr.dehttps://orcid.org/0000-0002-0680-2376
Risse, Eicke-AlexanderEicke-Alexander.Risse (at) dlr.deUNSPECIFIED
Schwenk, KurtKurt.Schwenk (at) dlr.deUNSPECIFIED
Stelzer, MartinMartin.Stelzer (at) dlr.deUNSPECIFIED
Ulmer, MoritzMoritz.Ulmer (at) dlr.dehttps://orcid.org/0000-0002-5620-8412
Vellas, SimonSimon.Vellas (at) dlr.deUNSPECIFIED
Westerdorff, Karstenkarsten.westerdorff (at) dlr.deUNSPECIFIED
Date:3 October 2018
Journal or Publication Title:Proceedings of the International Astronautical Congress, IAC
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Status:Published
Keywords:Satellite Avionics, Distributed Computing, Fault-tolerant Systems, Vision based Naviagtion, GNC, CDH, Rendezvous Navigation, Robotics, SpaceWire, Leon3, Zynq, COTS in Space
Event Title:IAC 2018
Event Location:Deutschland, Bremen
Event Type:international Conference
Event Dates:1.-5.Okt 2018
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):R - Scosa Onboard Computing
Location: Berlin-Adlershof , Braunschweig , Bremen , Oberpfaffenhofen
Institutes and Institutions:Institut of Simulation and Software Technology > Software for Space Systems and Interactive Visualisation
Space Operations and Astronaut Training > Space Flight Technology
Institute of Optical Sensor Systems
Institute of Robotics and Mechatronics (since 2013)
Institute of Space Systems
Deposited By: Treudler, Carl Johann
Deposited On:06 Nov 2018 09:36
Last Modified:06 Nov 2018 09:36

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