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Hubner J.M.,ESA ESOC | Southworth R.,ESA ESOC | Merz K.,ESA ESOC | Salt D.,TPZ VEGA | And 4 more authors.
14th International Conference on Space Operations, 2016 | Year: 2016

Space debris in orbit poses a serious threat: Even a tiny screw or a piece of paint travelling at very high velocity can cause major damage if it hits a satellite. Any single impact can cause a cascade of collisions and eventually lead to a domino effect: Each collision generating space debris increases the likelihood of further collisions creating even more space debris. Up to now the growth of the debris population has been dominated by object break-ups (intentional or unintentional). However, the Iridium- Cosmos collision illustrates the risks associated with debris population growth driven by the collisional domino effect. The numerous close approaches, near-misses and the increasing risk of collisions have prompted space agencies across the world to selfcommit to guidelines aiming to limit space debris population growth and the resulting collision threats. The Gamma-Ray observatory INTEGRAL with its 3.5 tons is ESA’s heaviest science mission ever flown. Analyses have shown that once out of fuel, INTEGRAL would not re-enter during the next at least 200 years without intervention from ground. In this long period, it would initially pose a modest debris hazard in the protected sub 2000 km and the geostationary zone but could eventually become a major debris contributor in case of a collision. Therefore, despite the fact that INTEGRAL was launched before the ESA space debris guidelines were formulated, an investigation of potential disposal options has been performed several years after launch including graveyard orbit, disposal manoeuvre, break up and re-entry analyses. This paper summarises the different disposal options as well as the disposal concept and strategy ultimately chosen via parametric numerical propagations and break-up analyses. Furthermore, the in-depth planning of the disposal manoeuvres and their successful execution in 2015 are presented. Finally, the detailed assessment of the resulting consequences for the scientific mission and the routine mission operations are discussed including the re-entry characteristics and possible fine-tuning of the re-entry longitude, position and profile in the next decade. © 2016, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.

Deredempt M.-H.,Airbus | Rossignol A.,Airbus | Windsor J.,European Space Agency | De-Ferluc R.,Thales Alenia | And 10 more authors.
European Space Agency, (Special Publication) ESA SP | Year: 2012

Space industries designers, for scientific, observation, exploration and telecom missions are now facing requirements such as long lifetime, autonomy and safe operation guarantee in case of failure. New technical and industrial challenges will add complexity. The key point to ensure the success of future industrial projects is to answer on board processing increasing demand by designing more scalable and modular architectures in order to allow new missions whilst improving lifecycle, costs of design, qualification, and security. Focusing on data processing, new technology such as time and space partitioning as part of Integrated Modular Avionics (IMA) experimented by aeronautical domain and industrialized in the new generation of aircraft, was analyzed first for security and feasibility in space domain by an ESA project on secure partitioning and working group. In order to complete these studies, Integrated Modular Avionics for Space, as current ESA project, has the objective to confirm the feasibility of Time and Space Partitioning in space domain using existing hardware and based on ARINC653. By combining the efforts of industrial partners, the IMA for Space (IMA SP) project main goals are to focus first on some major topics such as computational model, impact of caches, impact on process and tools, Failure Detection and Isolation Recovery (FDIR), maintenance and I/O management in order to consolidate requirements, then to develop software solutions that meet requirements and lastly to implement these solutions in a demonstration phase with operational software.

Merri M.,European Space Agency | Cooper S.,European Space Agency | Behal B.,French National Center for Space Studies | Feliot D.,French National Center for Space Studies | And 3 more authors.
SpaceOps 2010 Conference | Year: 2010

The Consultative Committee for Space Data Systems (CCSDS) is developing a set of Mission Operations (MO) services that will allow the build-up of space systems (Ground Segment, but also part of the Space Segment) using plug-in components that implement those services and that can grow as the approach lends to easy extensibility. MO will become the PUS of the future! © 2010 by ESA.

Terraillon J.-L.,ESA | Jung A.,ESA | Arberet P.,French National Center for Space Studies | Montenegro S.,German Aerospace Center | And 9 more authors.
European Space Agency, (Special Publication) ESA SP | Year: 2010

The paper aims at describing the motivation and the outcome of the definition of a reference architecture for software on-board the spacecraft platforms. It is based on the work of an industrial working group named Savoir-Faire, supported by industrial activities, which have defined the architectural principles and the process to define further the architecture. The architecture is using a component based approach executed by an execution platform adapted to space. The paper will present the user needs, the architecture requirements, the architectural principles, and the way forward.

Woods M.,SCISYS | Shaw A.,SCISYS | Tidey E.,Roke Manor Research | Van Pham B.,Hoffmann-La Roche | And 10 more authors.
Journal of Field Robotics | Year: 2014

Under the umbrella of the European Space Agency (ESA) StarTiger program, a rapid prototyping study called Seeker was initiated. A range of partners from space and nonspace sectors were brought together to develop a prototype Mars rover system capable of autonomously exploring several kilometers of highly representative Mars terrain over a three-day period. This paper reports on our approach and the final field trials that took place in the Atacama Desert, Chile. Long-range navigation and the associated remote rover field trials are a new departure for ESA, and this activity therefore represents a novel initiative in this area. The primary focus was to determine if current computer vision and artificial intelligence based software could enable such a capability on Mars, given the current limit of around 200 m per Martian day. The paper does not seek to introduce new theoretical techniques or compare various approaches, but it offers a unique perspective on their behavior in a highly representative environment. The final system autonomously navigated 5.05 km in highly representative terrain during one day. This work is part of a wider effort to achieve a step change in autonomous capability for future Mars/lunar exploration rover platforms. Copyright © 2014 Wiley Periodicals, Inc.

Rodriguez A.-I.,GMV Inc | Ferrero F.,GMV Inc | Alana E.,GMV Inc | Jung A.,European Space Agency | And 3 more authors.
European Space Agency, (Special Publication) ESA SP | Year: 2012

This paper presents the current proposal for the COrDeT-2 On-board Software (OBSW) Reference Architecture (OBSW-RA), and outlines the design principles and process which contribute to its design. In particular, the paper addresses the Component Layer of the OBSW-RA, which is a concrete instantiation of the COrDeT-2 Component Model and the tool-set that supports it.

Paar G.,Joanneum Research | Waugh L.,Airbus | Barnes D.P.,Aberystwyth University | Pajdla T.,Czech Technical University | And 6 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2012

In order to maximize the use of a robotic probe during its limited lifetime, scientists immediately have to be provided the best achievable visual quality of 3D data products. The EU FP7-SPACE Project PRoVisG (2008-2012) develops technology for the rapid processing and effective representation of visual data by improving ground processing facilities. In September 2011 PRoVisG held a Field Trials campaign in the Caldera of Tenerife to verify the implemented 3D Vision processing mechanisms and to collect various sets of reference data in representative environment. The campaign was strongly supported by the Astrium UK Rover Bridget as a representative platform which allows simultaneous onboard mounting and powering of various vision sensors such as the Aberystwyth ExoMars PanCam Emulator (AUPE). The paper covers the preparation work for such a campaign and highlights the experiments that include standard operations- and science- related components but also data capture to verify specific processing functions. We give an overview of the captured data and the compiled and envisaged processing results, as well as a summary of the test sites, logistics and test assets utilized during the campaign. © 2012 SPIE-IS&T.

The Coal Authority has commissioned SciSys to undertake a business transformation and technology replacement program and deliver a new enterprise information service known as Inferis. Inferis is based on state-of-the-art Service Oriented Architecture (SOA), Geographic Information System (GIS) and workflow technologies and is designed to provide The Coal Authority with a single, unified view of its enterprise. It replaces previous solutions and facilitates smarter working via business process automation, service re-use and corporate data sharing. Inferis has two main access points: Inferis Public (internet) and Inferis Central (intranet). The former sub-system allows The Coal Authority stakeholders such as local authorities; solicitors or members of the public to manage their accounts and order a range of products. The Inferis Central sub-system, on the other hand, is where the majority of the system functionality is delivered to support a wider variety of internal The Coal Authority business processes and workflows.

Woods M.,SciSys | Rendell P.,SciSys | Winstone B.,SciSys
SpaceOps 2010 Conference | Year: 2010

The use of advanced robotic platforms for solar system exploration continues to grow and become a mainstream exploration activity. Over time robot deployments will stretch beyond single agent activities and will also include human robot and robot-robot interaction. Given the complexity of the robot-terrain/environment interactions and constrained communication options (latencies, non real-time and low-bandwidth such missions require more sophisticated tool support for planning and monitoring including 3D visualization. These tools will also need to deal with different phases of deployment from remote through to long-term exploration with human teams in-situ. This paper describes a software framework called OVERSEER for multiple robot use and management including; integrated smart device access which can be used for automated, in-field request support. © 2010 by SciSys UK Ltd. Published by the American Institute of Aeronautics and Astronautics, Inc.

Paar G.,Joanneum Research | Woods M.,SciSys | Gimkiewicz C.,Swiss Center for Electronics and Microtechnology | Labrosse F.,Aberystwyth University | And 5 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2012

Mobile systems exploring Planetary surfaces in future will require more autonomy than today. The EU FP7-SPACE Project ProViScout (2010-2012) establishes the building blocks of such autonomous exploration systems in terms of robotics vision by a decision-based combination of navigation and scientific target selection, and integrates them into a framework ready for and exposed to field demonstration. The PRoViScout on-board system consists of mission management components such as an Executive, a Mars Mission On-Board Planner and Scheduler, a Science Assessment Module, and Navigation & Vision Processing modules. The platform hardware consists of the rover with the sensors and pointing devices. We report on the major building blocks and their functions & interfaces, emphasizing on the computer vision parts such as image acquisition (using a novel zoomed 3D-Time-of-Flight & RGB camera), mapping from 3D-TOF data, panoramic image & stereo reconstruction, hazard and slope maps, visual odometry and the recognition of potential scientifically interesting targets. © 2012 SPIE-IS&T.

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