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Now showing items 421-430 of 582
Improved active sonar tactical support by through-the-sensor estimation of acoustic seabed properties
(2014)
Accurate environmental information is required for obtaining confident sonar performance predictions. This environmental information is, however, often unreliable or unavailable. To support antisubmarine warfare (ASW) ...
Military Off the Shelf Procurements: A Norwegian Case Study
(2017-06-19)
Buying off the shelf procurements (OTS) has become an important part of the national acquisition strategy in several countries, and this paper seeks to bring empirical evidence on OTS as the preferred acquisition strategy ...
Syria's Foreign Fighters
(2013)
Single-point structure tensors in turbulent channel flows with smooth and wavy walls
(2019-10-06)
A long-standing problem in turbulence modeling is that the Reynolds stress tensor alone is not necessarily sufficient to characterize the transient and nonequilibrium behaviors of turbulence under arbitrary mean deformation ...
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 ...
First indications that northern bottlenose whales are sensitive to behavioural disturbance from anthropogenic noise
(2015)
Although northern bottlenose whales were the most heavily hunted beaked whale, we have little information about this species in its remote habitat of the North Atlantic Ocean. Underwater anthropogenic noise and disruption ...
Sensemaking and decision-making in a joint military context: The role of translating, verifying and prioritizing information
(2018)
This article, based on fieldwork during a military exercise in Norway, analyzes how new technology is used in joint operations by military personnel and how it is connected to sense-making and decision-taking. The authors' ...
Når alt blir personlig. Trump i internasjonal politikk
(2018-12-10)
Denne spalten tar for seg betydningen av personligheten til USAs 45. og sittende president, Donald Trump. Argumentet som fremmes, er at Trumps personlighet, dog mangefasettert, gjennomsyres av særlig ett karaktertrekk, ...
Passive Radar detection of small UAV over sea
(2019-07-22)
During a trial over the Trondheim-fjord in Norway fall 2018, aDVB-T based passive radar system was used for detecting a small unmanned aerial vehicle (UAV) over sea. The measurements show a possible detection range of 1 ...
Laser beam propagation through turbulence and adaptive optics for beam delivery improvement
(2015-10-08)
We report results from numerical simulations of laser beam propagation through atmospheric turbulence. In particular, we study the statistical variations of the fractional beam energy hitting inside an optical aperture ...