Articles: Recent submissions
Now showing items 301-320 of 884
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Comparing RLS and LMS adaptive equalizers for large hydrophone arrays in underwater acoustic communication channels
(2019-10-14)There is an expected growth in underwater acoustic data traffic. To meet the demand of high data throughput, a migration towards the very high frequency band (>100 kHz) will be necessary. The increment in frequency comes ... -
Calibration target for extraction of frequency dependency in synthetic aperture sonar
(2019-12-03)Synthetic aperture sonar (SAS) can provide high resolution images of the seafloor backscatter. A current research topic is whether wider bandwidth and lower frequencies can support better discrimination of different ... -
Automating Behaviour Tree Generation for Simulating Troop Movements
(2018-08-08)Computer generated forces are simulated units that are used in simulation based training and decision support in the military. These simulations are used to help trainees build a mental model of how different scenarios ... -
Solving non-linear Boolean equation systems by variable elimination
(2019-08-17)In this paper we study Boolean equation systems, and how to eliminate variables from them while bounding the degree of polynomials produced. A procedure for variable elimination is introduced, and we relate the techniques ... -
Linear motion of multiple superposed viscous fluids
(2019-04-16)In this paper the small-amplitude motion of multiple superposed viscous fluids is studied as a linearized initial-value problem. The analysis results in a closed set of equations for the Laplace transformed amplitudes of ... -
Evaluation of safety distances for storage of explosive materials using a combination of thermochemical computations and CFD
(2019-01-14)A novel approach to calculating TNT equivalencies and safety distances for explosives, using a combination of thermochemical computations and computational fluid dynamics, is presented. This enables the estimation of safety ... -
Wargaming Evolved: Methodology and Best Practices for Simulation-Supported Wargaming
(2019-12-12)When developing and assessing future force structures, wargaming is a key activity for better understanding the strengths and weaknesses of the force structures. Today simulation systems let us create synthetic environments ... -
Generalized Periodic Vehicle Routing and Maritime Surveillance
(2019-11-18)Planning maritime surveillance activities in military operations and long-term defense planning is a huge task that is done manually today. Because maritime surveillance resources are extremely expensive, the potential ... -
The stabilising effect by a novel cable cerclage configuration in long cephalomedullary nailing of subtrochanteric fractures with a posteromedial wedge
(2019-05-16)Background Clinical studies suggest that an adjunctive cerclage in intramedullary nailing of subtrochanteric fractures improves the outcome. Despite this, to what extent various cerclage configurations influences the ... -
Destined for deadlock? Russia, Ukraine, and the unfulfilled Minsk agreements
(2020-01-27)Bringing peace, security, and stability to the war-torn region of Donbas has proven to be a challenging — some would say near-impossible — task. The "Minsk II" agreement, signed in February 2015, was supposed to put an end ... -
Russia and its Western Neighbours: A Comparative Study of the Security Situation in the Black, Baltic and Barents Sea Regions
(2019-12-17)Since Russia’s military intervention in Ukraine in 2014, the security situation of Europe’s eastern "frontline states" has undergone significant changes. In and around the Black Sea, the Baltic Sea and the Barents Sea, the ... -
Development and Calibration of a Low-Cost Radar Testbed Based on the Universal Software Radio Peripheral
(2019-12-01)For a cognitive radar algorithm to be useful, it must run on radar hardware that is flexible. Typically, this has been viewed as requiring a software-defined radio. With the emergence of cheap, digital transceiver systems, ... -
Collision Avoidance for Underactuated Marine Vehicles Using the Constant Avoidance Angle Algorithm
(2019-03-21)Avoiding collisions is a crucial ability for unmanned vehicles. In this paper, we present the constant avoidance angle algorithm, a reactive method for collision avoidance. It can be used to avoid both static and moving ... -
Strategy for Detection and High-Resolution Characterization of Authigenic Carbonate Cold Seep Habitats Using Ships and Autonomous Underwater Vehicles on Glacially Influenced Terrain
(2019-11-26)Cold seep habitats with authigenic carbonates and associated chemosynthetic communities in glacially influenced terrains constitute an important part of the benthic ecosystems, but they are difficult to detect in large-scale ... -
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 ... -
Hva nå, norsk forsvarsindustri? Instrumentelle og institusjonelle svar på EUs nye politikk på det sikkerhets- og forsvarspolitiske området- Instrumentelle og institusjonelle svar på EUs nye politikk på det sikkerhets- og forsvarspolitiske området
(2019-12-11)Artikkelen diskuterer EUs nye forsvarspakke med særlig vekt på CARD (Coordinated Annual Review on Defence), PESCO (Permanent Structured Cooperation) og EDF (European Defence Fund). Formålet er å styrke EU som sikkerhetspolitisk ... -
Hva nå, norsk forsvarsindustri? Instrumentelle og institusjonelle svar på EUs nye politikk på det sikkerhets- og forsvarspolitiske området:Instrumentelle og institusjonelle svar på EUs nye politikk på det sikkerhets- og forsvarspolitiske området
(2019-12-11)Artikkelen diskuterer EUs nye forsvarspakke med særlig vekt på CARD (Coordinated Annual Review on Defence), PESCO (Permanent Structured Cooperation) og EDF (European Defence Fund). Formålet er å styrke EU som sikkerhetspolitisk ... -
Automatic scene understanding and object identification in point clouds
(2019-10-10)A ladar can acquire a dense set of 3D coordinates of a scene, a so-called point cloud, in sub-second time from ranges of several kilometers. This paper presents algorithms for segmenting a point cloud into meaningful classes ... -
A socio-cognitive perspective on implementation and use of smart technology in the Norwegian home guard
(2019-11-25)The Norwegian Defence Research Establishment (FFI) has developed a communications concept for the Norwegian home guard (HV). This concept, called ”SMART” due to the emphasis on smart technologies, has been realized as a ...