Now showing items 1-20 of 2139

    • 10 år med russisk forsvarsmodernisering 

      Author::Bukkvoll, Tor; Author::Glærum, Sigurd; Author::Hakvåg, Una; Author::Sendstad, Cecilie; Author::Åtland, Kristian (2017)
      Denne utgaven av Viten er å betrakte et sluttprodukt fra forskningsprosjektet «Russlands militære maktmidler og bruken av dem». Den føyer seg inn i en lang rekke FFI-publikasjoner om Russland og russisk forsvarsutvikling. ...
    • A 2.5-D Integrated Data Logger for Measuring Extreme Accelerations 

      Gakkestad, Jakob; Sollund, Tomas; Dalsjø, Per; Tveit, Bjørn; Taklo, Maaike Margrete Visser; Wright, Daniel Nilsen; Helland, Susanne; Kristiansen, Helge; Johnsen, Christian (2017)
      A very compact and rugged 2.5-D integrated data logger has been built and tested. The data logger is capable of measuring accelerations exceeding 70 000 g. Microcontroller and flash memory as bare dies have been mounted ...
    • The 2006 Russian-Ukrainian gas crisis - causes and potential for repetition 

      Koren, Knut Magnus; Bukkvoll, Tor (2007)
      Denne rapporten diskuterer årsakene til gasskrisen mellom Russland og Ukraina i januar 2006, og analyserer potensialet for at en lignende krise kan oppstå mellom de to landene på et senere tidspunkt. Denne tematikken er ...
    • 24 Hour Test of a Fuel Cell System for an Autonomous Underwater Vehicle 

      Gilljam, Martin; Weydahl, Helge; Lian, Torleif; Johannessen, Tom Cato; Holm, Sven Ivar; Hasvold, Jon Øistein (2016)
      The Norwegian Defence Research Establishment (FFI) has a long experience with power sources for autonomous underwater vehicles (AUVs). FFI has designed and built a power supply system based on a water-cooled and air-supplied ...
    • 250-MHz synchronously pumped optical parametric oscillator at 2.25–2.6 μm and 4.1–4.9 μm 

      Coluccelli, Nicola; Fonnum, Helge; Haakestad, Magnus Willum; Gambetta, Alessio; Gatti, Davide; Marangoni, Marco; Laporta, Paolo; Galzerano, Gianluca (2012)
      A compact and versatile femtosecond mid-IR source is presented, based on an optical parametric oscillator (OPO) synchronously pumped by a commercial 250-MHz Er:fiber laser. The mid-IR spectrum can be tuned in the range ...
    • 3D printed metamaterial lenses for microwave antennas 

      Kristoffersen, Stein; Hoel, Karina Vieira (2017)
      This report presents the results from a study initialized and financed by «kompetanseområde Materialteknologi» at the Norwegian Defence Research Establishment (FFI). It is an exploratory study on metamaterials, and the ...
    • A 3D Reactive Collision Avoidance Algorithm for Nonholonomic Vehicles 

      Syre Wiig, Martin; Pettersen, Kristin Ytterstad; Krogstad, Thomas Røbekk (2018)
      This paper presents a 3D reactive collision avoidance algorithm for vehicles with nonholonomic constraints. The algorithm steers the heading and pitch angle of the vehicle in order to maintain a constant avoidance angle ...
    • A 3D Reactive Collision Avoidance Algorithm for Underactuated Vehicles 

      Syre Wiig, Martin; Pettersen, Kristin Ytterstad; Krogstad, Thomas Røbekk (2018)
      This paper presents a 3D reactive collision avoidance algorithm for vehicles with underactuated dynamics. The underactuated states cannot be directly controlled, but are controlled indirectly by steering the direction of ...
    • 3D terrengmodell generert på bakgrunn av data fra digital bildeanalyse 

      Palm, Hans Christian; Braathen, Bjørn (2003)
      This report describes a technique for generating a digital terrain model of a given scene. The technique is based on first estimating the position and distance to parallelograms placed in various parts of the scene by ...
    • The 3S² experiments - studying the behavioral effects of naval sonar on northern bottlenose whales, humpback whales and minke whales 

      Kvadsheim, Petter H.; Lam, Frans-Peter; Miller, Patrick; Sivle, Lise D.; Wensveen, Paul; Roos, Marjoleine; Tyack, Peter; Kleivane, Lars; Visser, Fleur; Curé, Charlotte; van Ijsselmuide, San (2015)
      In order to properly consider how behavioral responses to anthropogenic noise affect marine mammals and establish safety limits for sonar operations, there is a need to establish behavioral impact criteria. In order to ...
    • 889 Systemarkitektur : erfaringer og anbefalinger 

      Skogstad, Arne K.; Hansbø, Morten (2010)
      Denne rapporten gir en kort innføring i systemarkitekturfaget, dets anvendelseser i det militære domenet, potensielle nytteverdi og noen sentrale konsepter og verktøy. Det legges spesiell vekt på NAF (NATO Architecture ...
    • The A.Q. Khan network 

      Breivik, Hanne; Toft, Heidi Kristine (2007)
      Dr. Abdul Qadeer Khan var sentral i utviklingen av den pakistanske atombomben. Det har lenge vært kjent at Pakistan har importert både teknologi og materialer for anriking av uran fra Europa, og det har vært antatt at ...
    • 'Abdallah 'Azzam and Palestine 

      Hegghammer, Thomas (2013)
      ʿAbdallāh ʿAzzām (1941–1989) helped make jihadism more transnational by spearheading the effort to bring Muslim foreign fighters to Afghanistan in the 1980s. But why would a West Bank native devote himself to a war in ...
    • Accumulation of lead (Pb) in brown trout (Salmo trutta) from a lake downstream a former shooting range 

      Mariussen, Espen; Heier, Lene Sørlie; Teien, Hans-Christian; Pettersen, Marit Nandrup; Holth, Tor Fredrik; Salbu, Brit; Rosseland, Bjørn Olav (2017)
      An environmental survey was performed in Lake Kyrtjønn, a small lake within an abandoned shooting range in the south of Norway. In Lake Kyrtjønn the total water concentrations of Pb (14 µg/L), Cu (6.1 µg/L) and Sb (1.3 ...
    • Acoustic seabed classification using QTC IMPACT on single-beam echo sounder data from the Norwegian Channel, northern North Sea 

      Eidem, Ellen Johanne; Landmark, Knut (2013)
      Sediment mapping is important for understanding the physical processes, the impact of human activity, and the conditions for marine life on the seabed. For this purpose, the seabed classification tool QTC IMPACT analyses ...
    • Active spacecraft potential control investigation 

      Torkar, K.; Nakamura, R.; Tajmar, Martin; Scharlemann, C.; Jeszensky, H.; Laky, G.; Fremuth, G.; Escoubet, C. P.; Svenes, Knut Ragnar (2014)
      In tenuous plasma the floating potential of sunlit spacecraft reaches tens of volts, positive. The corresponding field disturbs measurements of the ambient plasma by electron and ion sensors and can reduce micro-channel ...
    • Ad hoc networks used in emergency networks : the Trust Metric Routing approach 

      Winjum, Eli; Kure, Øivind; Spilling, Pål (2006)
      Mobile wireless ad hoc networks have characteristics, which intuitively make them well suited for utilization in search and rescue operations. This report discusses and describes how mobile wireless ad hoc networks will ...
    • Adapting OLSR for WSNs (iOLSR) Using Locally Increasing Intervals 

      Larsen, Erlend; Flathagen, Joakim; Pham, Vinh Quang; Landmark, Lars (2012)
      Proactive link state routing protocols, popular within the Mobile Ad hoc NETwork framework, have not been as successful in wireless sensor networks. This is mainly due to the extensive energy usage by control traffic ...
    • Adapting Web Services for Limited Bandwidth Tactical Networks, published at the 12th ICCRTS 

      Hafsøe, Trude; Johnsen Frank T.; Lund, Ketil; Eggen, Anders (2007)
      Web Services er i utstrakt bruk på Internett i dag, og hyllevare er lett tilgjengelig. Web Services blir vurdert som en grunnteknologi for Nettverksbasert Forsvar, og virker lovende fordi både synkrone og asynkrone ...
    • Adaptive coded modulation under noisy channel state information and antenna diversity 

      Duong, Duc V. (2007)
      Rapporten omhandler analyse og optimalisering av single-carrier adaptiv kodet modulasjonssystemer med antennediversitet hvor multidimensjonal trellis koder er brukt som komponentkoder. Både estimerings- og prediksjonsfeil ...