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Now showing items 1-20 of 2948
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10 år med russisk forsvarsmodernisering
(2017-11-24)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 11‐day compressed overload and taper induces larger physiological improvements than a normal taper in elite cyclists
(2019-08-28)Endurance athletes usually achieve performance peaking with 2‐4 weeks of overload training followed by 1‐3 weeks of tapering. With a tight competition schedule, this may not be appropriate. Thus, the aim of this study was ... -
A 2.5-D Integrated Data Logger for Measuring Extreme Accelerations
(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
(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
(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
(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 ... -
3-D Printed Monolithic GRIN Dielectric-Loaded Double-Ridged Horn Antennas
(2019-09-06)Monolithic integration of 3-D printed gradient index (GRIN) dielectric loading with a double-ridged rectangular horn standard gain horn (SGH) and its impact on antenna performance are demonstrated. Results show that the ... -
3D printed metamaterial lenses for microwave antennas
(2017-03-01)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
(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 underwater vehicles
(2020-02-28)Avoiding collisions is an essential goal of the control system of autonomous vehicles. This paper presents a reactive algorithm for avoiding obstacles in a three‐dimensional space, and shows how the algorithm can be applied ... -
A 3D Reactive Collision Avoidance Algorithm for Underactuated Vehicles
(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 Rendering of Shipwrecks from Synthetic Aperture Sonar
(2021-10-25)Synthetic aperture sonar (SAS) bathymetric mapping provides centimeter-scale horizontal resolution of the seafloor. Typically, SAS data has been visualized as 2D images or gridded 2.5D surfaces, but it can also be plotted ... -
3D terrengmodell generert på bakgrunn av data fra digital bildeanalyse
(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 3S3 experiment data report - using operational naval sonars to study the effects of continuous active sonar, and source proximity, on sperm whales
(2021-03-18)The 3S project is an international collaborative effort with the aim to investigate behavioral reactions of cetaceans to naval sonar signals. The objectives of the third phase of the project (3S3) were to investigate if ... -
The 3S² experiments - studying the behavioral effects of naval sonar on northern bottlenose whales, humpback whales and minke whales
(2015-11-03)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
(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
(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 ... -
A2/AD and the missile threat - systems, countermeasures and models
(2021-03-12)In this report we discuss the (relatively) novel military term A2/AD, which is an acronym for Anti- Access/Area Denial. We cover both general aspects related to how the term should be understood, Russian A2/AD capabilities ... -
'Abdallah 'Azzam and Palestine
(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 ... -
Abstraction-decomposition space for critical infrastructure systems: A framework for infrastructure planning and resilience policies
(2022-04-20)The objective of this work has been to propose a framework that will aid governments with the development of more coherent and effective infrastructure planning and resilience policies through a system-of-systems approach ...