ScOSA: application development for a high-performance space qualified onboard computing platform

Schwenk, Kurt; Ulmer, Moritz; Peng, Ting

doi:10.1117/12.2325548

Cited by 6 publications

(5 citation statements)

References 2 publications

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“…In case of a node failure, they can be migrated to other functional nodes. More details about application development for the ScOSA system can be found in [12].…”

Section: Rcnmentioning

confidence: 99%

On Board Data Analysis and Realtime Information System

Kurt,

Herschmann

2023

2023 European Data Handling &Amp; Data Processing Conference (EDHPC)

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The DLR is currently working on an on-board data analysis and real-time information system, for satellites and other autonomous platforms. The system should offer query and alarming services with a query-response time of a few minutes. This is hard to archive today and would beneficial for many earth observation applications. A first prototype of the system has been designed and tested on a flight campaign. In this article we present the current status of the system, the next development steps for bringing the system closer to space, and the obstacles we have to tackle on the way.

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“…In case of a node failure, they can be migrated to other functional nodes. More details about application development for the ScOSA system can be found in [12].…”

Section: Rcnmentioning

confidence: 99%

On Board Data Analysis and Realtime Information System

Kurt,

Herschmann

2023

2023 European Data Handling &Amp; Data Processing Conference (EDHPC)

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“…The ScOSA Flight Experiment presented in this work builds on its predecessor projects, ScOSA [23,26] and OBC-NG [5,19]. In addition to the preliminary work of DLR, some related work in the field of fault-tolerance for spacecraft OBCs exists.…”

Section: Related Workmentioning

confidence: 99%

ScOSA system software: the reliable and scalable middleware for a heterogeneous and distributed on-board computer architecture

et al. 2021

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Designing on-board computers (OBC) for future space missions is determined by the trade-off between reliability and performance. Space applications with higher computational demands are not supported by currently available, state-of-the-art, space-qualified computing hardware, since their requirements exceed the capabilities of these components. Such space applications include Earth observation with high-resolution cameras, on-orbit real-time servicing, as well as autonomous spacecraft and rover missions on distant celestial bodies. An alternative to state-of-the-art space-qualified computing hardware is the use of commercial-off-the-shelf (COTS) components for the OBC. Not only are these components cheap and widely available, but they also achieve high performance. Unfortunately, they are also significantly more vulnerable to errors induced by radiation than space-qualified components. The ScOSA (Scalable On-board Computing for Space Avionics) Flight Experiment project aims to develop an OBC architecture which avoids this trade-off by combining space-qualified radiation-hardened components (the reliable computing nodes, RCNs) together with COTS components (the high performance nodes, HPNs) into a single distributed system. To abstract this heterogeneous architecture for the application developers, we are developing a middleware for the aforementioned OBC architecture. Besides providing an monolithic abstraction of the distributed system, the middleware shall also enhance the architecture by providing additional reliability and fault tolerance. In this paper, we present the individual components comprising the middleware, alongside the features the middleware offers. Since the ScOSA Flight Experiment project is a successor of the OBC-NG and the ScOSA projects, its middleware is also a further development of the existing middleware. Therefore, we will present and discuss our contributions and plans for enhancement of the middleware in the course of the current project. Finally, we will present first results for the scalability of the middleware, which we obtained by conducting software-in-the-loop experiments of different sized scenarios.

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“…The ScOSA platform is the on-board target system for the OOS-Group's development work [70]. Specifically, a ScOSA breadboard model runs the rendezvous GNC system with a subset of features and directly connects to the ExtEPOS interface.…”

Section: On-board Computer In the Loopmentioning

confidence: 99%

10-Year Anniversary of the European Proximity Operations Simulator 2.0—Looking Back at Test Campaigns, Rendezvous Research and Facility Improvements

et al. 2021

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Completed in 2009, the European Proximity Operations Simulator 2.0 (EPOS 2.0) succeeded EPOS 1.0 at the German Space Operations Center (GSOC). One of the many contributions the old EPOS 1.0 facility made to spaceflight rendezvous is the verification of the Jena-Optronik laser-based sensors used by the Automated Transfer Vehicle. While EPOS 2.0 builds upon its heritage, it is a completely new design aiming at considerably more complex rendezvous scenarios. During the last ten years, GSOC’s On-Orbit-Servicing & Autonomy group, who operates, maintains and evolves EPOS 2.0, has made numerous contributions to the field of uncooperative rendezvous, using EPOS as its primary tool. After general research in optical navigation in the early 2010s, the OOS group took a leading role in the DLR project “On-Orbit-Servicing End-to-End Simulation” in 2014. EPOS 2.0 served as the hardware in the loop simulator of the rendezvous phase and contributed substantially to the project’s remarkable success. Over the years, E2E has revealed demanding requirements, leading to numerous facility improvements and extensions. In addition to the OOS group’s research work, numerous and diverse open-loop test campaigns for industry and internal (DLR) customers have shaped the capabilities of EPOS 2.0 significantly.

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ScOSA: application development for a high-performance space qualified onboard computing platform

Cited by 6 publications

References 2 publications

On Board Data Analysis and Realtime Information System

On Board Data Analysis and Realtime Information System

ScOSA system software: the reliable and scalable middleware for a heterogeneous and distributed on-board computer architecture

10-Year Anniversary of the European Proximity Operations Simulator 2.0—Looking Back at Test Campaigns, Rendezvous Research and Facility Improvements

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