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6th IEEE International conference on advanced Video and Signal Based Surveillance

作者： Bixio, Luca Ciardelli, Lorenzo Ottonello, Marina Regazzoni, Carlo S. Univ Genoa Dept Biophys & Elect Engn I-16145 Genoa Italy

ISBN: (纸本)9781424447558

The application of intelligent systems composed by smart cameras is continuously spreading in a wide range of applications, playing a key role in public, military and commercial scenarios. As well, in the last years, the capability of Wireless sensor Networks to collect information from the environment in a distributed manner has been successfully applied in both civilian and military applications. In this paper, basing on recent studies on autonomous cognitive systems, we explore the concepts for designing interactive, adaptable and intelligent multi-sensor surveillance systems able to react to situations in a preventive way by using actuators placed in the monitored environment. To this end, taking inspiration from Ambient Intelligence (AmI) and Cognitive Radio (CR) paradigms, fusion of information provided by heterogeneous sensors is used to improve awareness regarding surrounding environment.

关键词： Military applications

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New Approach to Secure Cluster Heads in Wireless sensor Networks 5

New Approach to Secure Cluster Heads in Wireless Sensor Netw...

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5th International conference on advanced Computing and Communication systems (ICACCS)

作者： Jyothi, R. Cholli, Nagaraj G. Global Acad Technol CSE Dept Bengaluru 560098 India RV Coll Engn ISE Dept Bengaluru 560059 India

ISBN: (纸本)9781538695333

This Wireless sensor Network is a network of devices that communicates the information gathered from a monitored field through wireless links. Small size sensor nodes constitute wireless sensor networks. A sensor is a device that responds and detects some type of input from both the physical or environmental conditions, such as pressure, heat, light, etc. applications of wireless sensor networks include home automation, street lighting, military, healthcare and industrial process monitoring. As wireless sensor networks are distributed across large geographical area, these are vulnerable to various security threats. This affects the performance of the wireless sensor networks. The impact of security issues will become more critical if the network is used for mission-critical applications like tactical battlefield. In real life deployment scenarios, the probability of failure of nodes is more. As a result of resource constraints in the sensor nodes, traditional methods which involve large overhead computation and communication are not feasible in WSNs. Hence, design and deployment of secured WSNs is a challenging task. Attacks on WSNs include attack on confidentiality, integrity and availability. There are various types of architectures that are used to deploy WSNs. Some of them are data centric, hierarchical, location based, mobility based etc. This work discusses the security issue of hierarchical architecture and proposes a solution. In hierarchical architectures, sensor nodes are grouped to form clusters. Intra-cluster communication happens through cluster heads. Cluster heads also facilitate inter-cluster communication with other cluster heads. Aggregation of data generated by sensor nodes is done by cluster heads. Aggregated data also get transferred to base through multi-hop approach in most cases. Cluster heads are vulnerable to various malicious attacks and this greatly affects the performance of the wireless sensor network. The proposed solution identifies a

关键词： Aggregation Cryptographic algorithm Data aggregation Wireless sensor network Cluster

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Next Generation sensor systems

Next Generation Sensor Systems

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IEEE 6th International conference on advanced Infocomm Technology (ICAIT)

作者： Black, Richard J. Moslehi, Behzad Intelligent Fiber Opt Syst Corp IFOS Santa Clara CA 95054 USA

As technology advances, and component and system costs drop, fiber optic and other sensor system applications are expected to proliferate, expanding from niche uses focused on high-value assets to increasing employmen... 详细信息

ISBN: (纸本)9781479904648

关键词： sensors sensor systems fiber optic sensors photonics

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In-Stream Validation of Measurements with OGC SWE Web Services

In-Stream Validation of Measurements with OGC SWE Web Servic...

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2nd International conference on advanced Geographic Information systems, applications and Services

作者： Everding, Thomas Juerrens, Eike Hinderk Andrae, Stefanie Univ Munster Inst Geoinformat Munster Germany Carinthia Univ Appl Sci Dept Geoinformat Villach Austria

ISBN: (纸本)9780769539515

As sensor networks grow the amount of sensor measurements increases. This large amount of data is crucial for monitoring systems but useless if it is not trustworthy. In this paper different approaches for the validation of sensor measurements using standardized encodings and services specified by the Open Geospatial Consortium (OGC) are discussed. Approaches based on current OGC specifications for sensor Web Enablement (SWE) are discussed and their drawbacks are identified. Based on these drawbacks a new architecture for in-stream validation of sensor measurements is introduced. This new approach uses event processing techniques and is based on encodings and services proposed in an OGC SWE discussion paper.

关键词： Open Geospatial Consortium (OGC) sensor Web Enablement event processing data validation

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sensor Virtualization for Enabling Novel Services 10

Sensor Virtualization for Enabling Novel Services

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10th IEEE International conference on Intelligent Data Acquisition and advanced Computing systems - Technology and applications (IDAACS)

作者： Chenaru, Oana Hanganu, Cristina Elena Popescu, Dan Ichim, Loretta Univ POLITECH Bucharest 313 Splaiul Independentei Bucharest Romania

ISBN: (纸本)9781728140681

The paper presents a model for the virtualization of a wireless sensor network in a smart home application for energy consumption monitoring. By correlating physical sensor data with information on home's design, sunrise and sunset time according to day of year, time of day and weather data, novel services for consumed power statistics and efficiency of use of natural light were developed in the virtualized environment. Based on this model, distributed applications were developed to implement analysis of energy consumption over large scale areas. We detail the solution implementation based on the OpenSHS simulator and NodeRed.

关键词： distributed applications energy consumption monitoring smart home application sensor virtualization

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Mathematical Test Effort Estimation for Dependability Assessment of sensor-based Driver Assistance systems 42

Mathematical Test Effort Estimation for Dependability Assess...

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42nd Euromicro conference Series on Software Engineering and advanced applications (SEAA)

作者： Bock, Florian German, Reinhard Siegl, Sebastian Friedrich Alexander Univ Erlangen Nuremberg Dept Comp Sci 7 D-91058 Erlangen Germany Audi AG D-85045 Ingolstadt Germany

ISBN: (纸本)9781509028191

The development of modern driver assistance systems in the automotive domain requires extensive testing, for safety as well as for legal reasons. This is especially the case for sensor-based systems that provide support for autonomous driving: if they fail, an accident may occur with fatal consequences. In the majority of cases, the required test effort is roughly estimated by means of previous project data, expert knowledge or based on economical factors. As an alternative, a general mathematical approach is presented in this paper, which is focused on black box systems with sensor data fusion. It enables new projects related with sensor data fusion to estimate the required test effort for a given scenario.

关键词： driver assistance systems automotive domain test effort validation estimation

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Diagnostic tolerance for missing sensor data

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Telematics and Informatics 1989年第3-4期6卷 251-258页

作者： Scarl, Ethan A. Advanced Technology Cent United States

For practical automated diagnostic systems to continue functioning after failure, they must not only be able to diagnose sensor failures but also be able to tolerate the absence of data from the faulty sensors. We show that conventional (associational) diagnostic methods will have combinatoric problems when trying to isolate faulty sensors, even if they adequately diagnose other components. Moreover, attempts to extend the operation of diagnostic capability past sensor failure will necessarily compound those difficulties. By contrast, the algorithmic methods of model-based reasoning have no special problems diagnosing faulty sensors and can operate gracefully when sensor data is missing.

关键词： Computer systems, Digital

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Compact Survey and Inspection Day/Night Image sensor Suite for Small Unmanned Aircraft systems (EyePod)

Compact Survey and Inspection Day/Night Image Sensor Suite f...

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conference on Airborne Intelligence, Surveillance, Reconnaissance (ISR) systems and applications vii

作者： Bird, Alan Anderson, Scott A. von Berg, Dale Linne Davidson, Morgan Holt, Niel Kruer, Melvin Wilson, Michael L. Space Dynam Lab 1695 N Res Pkw N Logan UT 84341 USA US Navy Res Lab Washington DC 20375 USA

ISBN: (纸本)9780819481320

EyePod is a compact survey and inspection day/night imaging sensor suite for small unmanned aircraft systems (UAS). EyePod generates georeferenced image products in real-time from visible near infrared (VNIR) and long wave infrared (LWIR) imaging sensors and was developed under the ONR funded FEATHAR (Fusion, Exploitation, Algorithms, and Targeting for High-Altitude Reconnaissance) program. FEATHAR is being directed and executed by the Naval Research Laboratory (NRL) in conjunction with the Space Dynamics Laboratory (SDL) and FEATHAR's goal is to develop and test new tactical sensor systems specifically designed for small manned and unmanned platforms (payload weight < 50 lbs). The EyePod suite consists of two VNIR/LWIR (day/night) gimbaled sensors that, combined, provide broad area survey and focused inspection capabilities. Each EyePod sensor pairs an HD visible EO sensor with a LWIR bolometric imager providing precision geo-referenced and fully digital EO/IR NITFS output imagery. The LWIR sensor is mounted to a patent-pending jitter-reduction stage to correct for the high-frequency motion typically found on small aircraft and unmanned systems. Details will be presented on both the wide-area and inspection EyePod sensor systems, their modes of operation, and results from recent flight demonstrations.

关键词： EyePod NITF Geo-aware Georegistered Georeferenced UAV UAS EO/IR LWIR Uncooled Infrared imaging

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Inter-layer vias and TESH interconnection network for 3-D heterogeneous sensor system on a chip

Inter-layer vias and TESH interconnection network for 3-D he...

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conference on Unattended Ground sensor Technologies and applications vii

作者： Bhansali, S Chapman, G Jain, V Univ S Florida Tampa FL 33620 USA

ISBN: (纸本)0819457817

In a previous paper we had described a novel concept on ultra-small, ultra-compact, unattended multiphenomenological sensor systems for rapid deployment, with integrated classification-and-decision-information extraction capability from the sensed environment. Specifically, we had proposed placing such integrated capability on a 3-D Heterogeneous System on a Chip (HSoC). This paper amplifies two key aspects of that future sensor technology. These are the creation of inter-layer vias by high aspect ratio MPS (Macro Porous Silicon) process, and the adaptation of the TESH (Tori connected mESHes) network to bind the diverse leaf nodes on multiple layers of the 3-D structure. Interesting also is the inter-relationship between these two aspects. In particular, the issue of overcoming via failures, catastrophic as well as high-resistance failures, through the existence of alternative paths in the TESH network and corresponding routing strategies is discussed. A probabilistic model for via failures is proposed and the testing of the vias between the sensor layer and the adjacent processing layer is discussed.

关键词： sensors

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Preparation of novel HTS films and tunnel junctions for advanced C3I sensor applications 7

Preparation of novel HTS films and tunnel junctions for adva...

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conference on Micro- and Nanotechnology sensors, systems, and applications vii

作者： Taylor, Benjamin J. Emery, Teresa H. Berggren, Susan A. E. de Escobar, Anna M. Leese Jeon, Inho Maple, M. Brian Space & Naval Warfare Syst Ctr Pacific Adv Concepts & Appl Res Branch Cryogen Exploitat RF CERF Lab San Diego CA 92152 USA Univ Calif San Diego La Jolla CA 92093 USA Univ Calif San Diego Mat Sci & Engn Program La Jolla CA 92093 USA Univ Calif San Diego Ctr Adv Nanosci La Jolla CA 92093 USA

ISBN: (纸本)9781628415834

Research into the development of advanced RF electronics and devices having high-Temperature Superconducting (HTS) circuitry is being carried out in the Cryogenic Exploitation of RF (CERF) laboratory at SPAWAR systems Center (SSC) - Pacific. Recently, we have developed a novel annealing process wherein a film of YBa2Cu3Ox is produced having a gradient of oxygen composition along a given direction which we refer to as YBa2Cu3O del x. Such samples are intended for rapid experimental investigation of the evolution of electronic properties within the compound and in combination with structurally compatible functional oxide materials as integrated sensor devices. We present here an investigation as to the extent to which local oxygen content affects the ion milling process in the formation of Josephson junctions in the HTS compound YBa2Cu3O del x. We find an abrupt transition in the profile and depth of ion milled trenches at oxygen concentrations at and below the well ordered oxygen level, O-6:72. The method described here shows good potential for use in the fabrication of large numbers of uniform Josephson junctions in films of YBa2Cu3Ox, as either a complementary processing tool for grain boundary, step edge, or ion damaged formed JJs, or as a stand alone method for producing nano-bridge JJ's.

关键词： Josephson junctions superconducting circuits RF sensors integrated circuits optics

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