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HW/SW Co-design of the Instrument Control Unit for the Energetic Particle Detector on-board Solar Orbiter

ADVANCES IN SPACE RESEARCH 2013年第6期52卷 989-1007页

作者： Sanchez, Sebastian Prieto, Manuel Polo, Oscar R. Parra, Pablo da Silva, Antonio Gutierrez, Oscar Castillo, Ronald Fernandez, Javier Rodriguez-Pacheco, Javier Univ Alcala Space Res Grp Madrid Spain

ESA's medium-class Solar Orbiter mission is conceived to perform a close-up study of our Sun and its inner heliosphere to better understand the behaviour of our star. The mission will provide the clues to discover how the Sun creates and controls the solar wind and thereby affects the environments of all the planets. The spacecraft is equipped with a comprehensive suite of instruments. The Energetic Particle Detector (EPD) is one of the in-situ instruments on-board Solar Orbiter. EPD is composed of five different sensors, all of them sharing the Instrument Control Unit or ICU that is the sole interface with the spacecraft. This paper emphasises on how the hardware/software co-design approach can lead to a decrease in software complexity and highlights the versatility of the toolset that supports the development process. Following a model-driven engineering approach, these tools are capable of generating the high-level code of the software application, as well as of facilitating its configuration control and its deployment on the hardware platforms used in the different stages of the development process. Moreover, the use of the Leon2ViP virtual platform, with fault injection capabilities, allows an early software-before-hardware verification and validation and also a hardware software co-simulation. The adopted solutions reduce development time without compromising the whole process reliability that is essential to the EPD success. (C) 2013 COSPAR. Published by Elsevier Ltd. All rights reserved.

关键词： Energetic Particle Detector Flight software software verification and validation Component-based software development Fault injection Virtual platform

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Verifying the SET registration protocols

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IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS 2003年第1期21卷 77-87页

作者： Bella, G Massacci, F Paulson, LC Univ Cambridge Comp Lab Cambridge CB3 0FD England Univ Catania Dipartimento Matemat & Informat I-95125 Catania Italy Univ Trent Dipartimento Informat & Telecomun I-38050 Trento Italy Univ Cambridge Comp Lab Cambridge CB3 0FD England

Secure electronic transaction (SET) is an immense e-commerce protocol designed to improve the security of credit card purchases. In this paper, we focus on the initial bootstrapping phases of SET, whose objective is the registration of cardholders and merchants with a SET certificate authority. The aim of registration is twofold: getting the approval of the cardholder's or merchant's bank and replacing traditional credit card numbers with electronic credentials that cardholders can present to the merchant so that their privacy is protected. These registration subprotocols present a number of challenges to current formal verification methods. First, they do not assume that each agent knows the public keys of the other agents. Key distribution is one of the protocols' tasks. Second, SET uses complex encryption primitives (digital envelopes) which introduce dependency chains: the loss of one secret key can lead to potentially unlimited losses. Building upon our previous work, we have been able to model and formally verify SETS registration with the inductive method in Isabelle/HOL (T. Nipkow et al., 2002). We have solved its challenges with very general techniques.

关键词： business communication communication system security computer network security protocols software verification and validation theorem proving

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software FAILURE PROBABILITY ASSESSMENT BY BAYESIAN INFERENCE

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NUCLEAR TECHNOLOGY 2013年第1期183卷 107-118页

作者： Park, Gee-Yong Eom, Heung-Seop Jang, Seung Cheol Kang, Hyun Gook Korea Atom Energy Res Inst Taejon 305353 South Korea Korea Adv Inst Sci & Technol Dept Nucl & Quantum Engn Taejon 305701 South Korea

This paper describes a method of estimating the probability of failure for trip-functioning software of a fully digitalized reactor protection system. The Bayesian inference is used to estimate and update the probability of software failure along the software development life cycle. At the requirements and design phases, the probability of software failure is estimated from qualitative quality information based on a specific verification and validation process. This probability of failure is updated at the implementation/testing phases, based on the test data for trip functions implemented by software.

关键词： software reliability Bayesian modeling software verification and validation

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A nonfunctional approach to system integrity

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IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS 2003年第1期21卷 36-43页

作者： Foley, SN Univ Coll Cork Dept Comp Sci Cork Ireland

Systems provide integrity protection by ensuring that there is no unauthorized modification of information. Traditional models of protection tend to define integrity in terms of ad hoc authorization techniques whose effectiveness is justified more on the basis of experience and "best practice," rather than on any common theoretical foundation. A formal definition of integrity is proposed that is independent of any particular implementation mechanism. A series of simple examples is used to demonstrate that existing integrity mechanisms such as separation of duties, well-formed transactions, and so forth, can be regarded as implementation techniques for achieving integrity. The proposed characterization of integrity is nonfunctional, that is, it falls into the same category of properties as noninterference and its relatives. As a consequence, validating that a system has integrity can be expected to be as challenging as validating that a system upholds noninterference.

关键词： computer security cryptography data security fault tolerance modeling protection protocols reliability software verification and validation system analysis and design

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A High Order Numerical Investigation of Electromagnetic Scattering From a Torus and a Circular Loop

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IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION 2013年第7期61卷 3656-3661页

作者： Bibby, Malcolm M. Coldwell, Charles M. Peterson, Andrew F. Georgia Inst Technol Sch Elect & Comp Engn Atlanta GA 30332 USA Red Hat Inc Westford MA 01886 USA

The normally integrated magnetic field integral equation (NIMFIE) formulation is used to generate accurate numerical results for toroidal scatterers. Numerical data for the surface currents and scattering cross section induced by a plane wave on a perfectly conducting torus are presented. The special case of a thin circular loop is also examined. These results are expected to find use in numerical validation.

关键词： Electromagnetic scattering integral equations numerical analysis software verification and validation

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MRO/CRISM Retrieval of Surface Lambert Albedos for Multispectral Mapping of Mars With DISORT-Based Radiative Transfer Modeling: Phase 1-Using Historical Climatology for Temperatures, Aerosol Optical Depths, and Atmospheric Pressures

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IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 2008年第12期46卷 4020-4040页

作者： McGuire, Patrick C. Wolff, Michael J. Smith, Michael D. Arvidson, Raymond E. Murchie, Scott L. Clancy, R. Todd Roush, Ted L. Cull, Selby C. Lichtenberg, Kim A. Wiseman, Sandra M. Green, Robert O. Martin, Terry Z. Milliken, Ralph E. Cavender, Peter J. Humm, David C. Seelos, Frank P. Seelos, Kim D. Taylor, Howard W. Ehlmann, Bethany L. Mustard, John F. Pelkey, Shannon M. Titus, Timothy N. Hash, Christopher D. Malaret, Erick R. Washington Univ McDonald Ctr Space Sci St Louis MO 63130 USA Space Sci Inst Boulder CO 80301 USA NASA Goddard Space Flight Ctr Greenbelt MD 20771 USA Johns Hopkins Univ Appl Phys Lab Laurel MD 20723 USA NASA Ames Res Ctr Moffett Field CA 94035 USA CALTECH Jet Prop Lab Pasadena CA 91109 USA Brown Univ Dept Geol Sci Providence RI 02912 USA US Geol Survey Flagstaff AZ 86001 USA Appl Coherent Technol Corp Herndon VA 20170 USA

We discuss the DISORT-based radiative transfer pipeline ("CRISM_LambertAlb") for atmospheric and thermal correction of MRO/CRISM data acquired in multispectral mapping mode (similar to 200 m/pixel, 72 spectral channels). Currently, in this phase-one version of the system, we use aerosol optical depths, surface temperatures, and lower atmospheric temperatures, all from climatology derived from Mars Global Surveyor Thermal Emission Spectrometer (MGS-TES) data and from surface altimetry derived from MGS Mars Orbiter Laser Altimeter (MOLA). The DISORT-based model takes the dust and ice aerosol optical depths (scaled to the CRISM wavelength range), the surface pressures (computed from MOLA altimetry, MGS-TES lower atmospheric thermometry, and Viking-based pressure climatology), the surface temperatures, the reconstructed instrumental photometric angles, and the measured I/F spectrum as inputs, and then a Lambertian albedo spectrum is computed as the output. The Lambertian albedo spectrum is valuable geologically because it allows the mineralogical composition to be estimated. Here, I/F is defined as the ratio of the radiance measured by CRISM to the solar irradiance at Mars divided by pi;if there was no martian atmosphere, I/F divided by the cosine of the incidence angle would be equal to the Lambert albedo for a Lambertian surface. After discussing the capabilities and limitations of the pipeline software system, we demonstrate its application on several multispectral data cubes-particularly, the outer reaches of the northern ice cap of Mars, the Tyrrhena Terra area that is northeast of the Hellas basin, and an area near the landing site for the Phoenix mission in the northern plains. For the icy spectra near the northern polar cap, aerosols need to be included in order to properly correct for the CO2 absorption in the H2O ice bands at wavelengths near 2.0 mu m. In future phases of software development, we intend to use CRISM data directly in order to retrieve the spati

关键词： Atmospheric propagation infrared spectroscopy remote sensing software verification and validation

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Incremental verification and synthesis of discrete-event systems guided by counter examples

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IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY 2004年第3期12卷 387-401页

作者： Brandin, BA Malik, R Malik, P Siemens Corp Res D-81730 Munich Germany Univ Waikato Dept Comp Sci Hamilton New Zealand

This article presents new approaches to system verification and synthesis based on subsystem verification and the novel combined use of counterexamples and heuristics to identify suitable subsystems incrementally. The scope of safety properties considered is limited to behavioral inclusion and controllability. The verification examples considered provide a comparison of the approaches presented with straightforward state exploration and an understanding of their applicability in an industrial context.

关键词： control systems controllability formal languages search methods software requirements and specifications software verification and validation

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Feature interaction detection contest of the Fifth International Workshop on Feature Interactions

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COMPUTER NETWORKS-THE INTERNATIONAL JOURNAL OF COMPUTER AND TELECOMMUNICATIONS NETWORKING 2000年第4期32卷 487-510页

作者： Griffeth, N Blumenthal, R Gregoire, JC Ohta, T AT&T Bell Labs Lucent Technol Murray Hill NJ 07974 USA Daewoo Telecom Ltd Middletown NJ USA INRS Telecommun Verdun PQ Canada Soka Univ Hachioji Tokyo Japan

A feature interaction detection contest was held for the Fifth International Workshop on Feature Interactions. The contest had two phases. The first phase required the contestants to analyze interactions among ten features, which were published on 15 February 1998, and to submit their results by 15 July 1998. The second phase, begun on 15 July 1988, required analysis of the interactions among two new features and the original 10, to be submitted by 1 August 1988. Six contestants submitted entries, to be judged in August and September, with the winner to be announced at the workshop. This body of this paper outlines the contest instructions. (C) 2000 Elsevier Science B.V. All rights reserved.

关键词： software requirements and specifications software verification and validation software maintenance communication system software communication system signaling feature interactions

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Error Detection in Concurrent Java Programs

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ELECTRONIC NOTES IN THEORETICAL COMPUTER SCIENCE 2006年第3期144卷 45-58页

作者： Hughes, Graham Rajan, Sreeranga P. Sidle, Tom Swenson, Keith Univ Calif Santa Barbara Comp Sci Santa Barbara CA 93106 USA Fujitsu Labs Amer Sunnyvale CA 94085 USA

Concurrency in multithreaded programs introduces additional complexity in software verification and testing, and thereby significantly increases the cost of Quality Assurance (QA). We present a case study in which a specialized model checker was used to discover concurrency errors in a large preexisting code base. The results revealed race conditions that lead to data corruption errors whose detection would have been prohibitively expensive with conventional testing and QA methods. We describe our methodology and highlight parts of the methodology that could be automated.

关键词： concurrency model checking software verification and validation

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PCs for AP and other EM reflections

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IEEE ANTENNAS AND PROPAGATION MAGAZINE 2000年第6期42卷 92-98页

作者： Miller, EK 3225 Calle Celestial Santa Fe NM 87501 USA.

After a brief introduction to far field analysis of radiation sources (FARS), the author discusses its extension to the time domain (TDFARS) and the validation of CEM results. Other topics discussed include: EM transi... 详细信息

关键词： electromagnetic radiation electromagnetic transient analysis error analysis modeling software verification and validation

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