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Multibeam Echosounder With Orthogonal Waveforms: Feasibility and Potential Benefits
(2021-04-15)
Modern multibeam echosounders (MBE) employ frequency-division techniques (FDT) to ensonify multiple sectors within the same ping cycle. This leads to improved performance in coverage rate, and yaw and pitch stabilization. ...
Spatial coherence of speckle for repeat-pass synthetic aperture sonar micronavigation
(2021-03-31)
Accurate positioning of autonomous underwater vehicles is a major challenge. The long-term drift is problematic if global position updates are not available, and for applications such as repeat-pass interferometry and ...
Formation Path Following Control of Underactuated USVs
(2021-06-30)
This paper proposes a formation control method for two underactuated unmanned surface vessels (USVs) to follow curved paths in the presence of ocean currents. By uniting a line-of-sight (LOS) guidance law and the ...
Characterizing the dynamic range of a hyperspectral camera
(2021-04-12)
The dynamic range of a hyperspectral camera can have a strong impact on the quality and integrity of the collected spectra. For the image sensor chip alone, the dynamic range is the ratio between the saturation level and ...
Pragmatism and Purism in Jihadist Governance: The Islamic Emirate of Azawad Revisited
(2022-01-02)
The Islamic Emirate established in northern Mali in 2012 was brought down less than a year later by a French military intervention, pro- voked by the Emirate’s belligerent posture. This article explains why the leaders of ...
Uønsket utenlandsk påvirkning? – kartlegging og analyse av stortingsvalget 2021
(2022-01-26)
Denne studien forsøker å kartlegge hvorvidt stortingsvalget 2021 ble utsatt for uønsket
informasjonspåvirkning fra utenlandske aktører. Med «uønsket informasjonspåvirkning» menes
her spredning av (des)informasjon og/eller ...
Stordata og avansert analyse – sluttrapport for FFI-prosjekt «Informasjonsintegrasjon for et moderne forsvar»
(2022-01-06)
Stordata kan best forstås som et begrep heller enn en konkret teknologi eller familie av teknologier.
I dette arbeidet karakteriseres stordata som data av forskjelligartet natur (variety), som kommer i
store mengder ...
Predicting scalar coupling constants via machine learning
(2021-12-22)
Over the preceding decade, machine learning techniques have been successfully applied in several
fields of research, including the prediction of chemical properties of atoms and molecules. Whereas
conventional quantum ...
Vil du fortsette i jobben for en million kroner? – bruk av retensjonsbonus i Forsvaret
(2021-09-10)
Vil personell i Forsvaret bli værende i jobben om de får utbetalt en bonus for å fortsette? Siden 2004 har Forsvaret benyttet en slik retensjonsbonus for å beholde en bestemt personellgruppe – de som er ansatt til de er ...
Comparison of thermal runaway initiation methods for a cylindrical Li-ion cell
(2021-08-30)
Li-ion batteries have become an important part of our daily life in applications as different as cell phones and electric ferries. High energy density is one of the factors for the successful market penetration of this ...