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Rate table tests of low-cost inertial measurement units
(2014-11-13)
This report gives a summary of the results of a series of tests of low cost inertial measurement
units conducted at FFI in late 2012. The units were all based on microelectromechanical
technology (MEMS) and included the ...
Oversikt over FFIs publisering i fagtidsskrifter 2012 og 2013
(2014-11-21)
Rapporten gir en oversikt over FFI-forskeres publisering i fagtidsskrifter med fagfellevurdering i
årene 2012 og 2013. Oversikten er hentet ut fra den norske publikasjonsdatabasen CRIStin, som
er et felles system for ...
Modeling Effectiveness of Gradual Increases in Source Level to Mitigate Effects of Sonar on Marine Mammals
(2014)
Ramp-up or soft-start procedures (i.e., gradual increase in the source level) are used to mitigate the effect of sonar sound on marine mammals, although no one to date has tested whether ramp-up procedures are effective ...
Compact airborne C-band radar sounder
(2014)
We describe a lightweight wideband C-band radar sounder, which is designed for use in a small unmanned aerial vehicle, primarily for measuring snow and ice. The waveform used is a gated frequency modulated continuous wave, ...
High thresholds for avoidance of sonar by free-ranging long-finned pilot whales (Globicephala melas)
(2014)
The potential effects of exposing marine mammals to military sonar is a current concern. Dose–response relationships are useful for predicting potential environmental impacts of specific operations. To reveal behavioral ...
Botulism outbreaks in natural environments - an update
(2014)
Clostridium botulinum comprises a diverse group of botulinum toxin-producing anaerobic rod-shaped spore-forming bacteria that are ubiquitously distributed in soils and aquatic sediments. Decomposition of plants, algae, and ...
Interstate Relations in the Arctic: An Emerging Security Dilemma?
(2014)
The five states that surround the Arctic Ocean— Russia, Canada, the United States, Denmark, and Norway—have in recent years taken various measures to protect their economic and security interests in the north. The measures ...
Fracture networks in sea ice
(2014)
Fracturing and refreezing of sea ice in the Kara sea are investigated using complex network analysis. By going to the dual network, where the fractures are nodes and their intersections links, we gain access to topological ...
Using the Power Balance Model to Simulate Cross-Country Skiing on Varying Terrain
(2014)
The current study adapts the power balance model to simulate cross-country skiing on varying terrain. We assumed that the skier’s locomotive power at a self-chosen pace is a function of speed, which is impacted by friction, ...
Obtaining spectral information from infrared scenarios using hyper-spectral cameras and cameras with spinning filter wheel
(2014)
In the past decades the Norwegian Defence Research Establishment (FFI) has recorded and characterized infrared scenarios for several application purposes, such as infrared target and background modeling and simulation, ...