Browsing by Title
Now showing items 2361-2380 of 2867
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Solar Wind from Coronal Funnels and Transition Region Lyalpha
(2005)Using a newly developed gyrotropic solar wind model that extends continuously from the mid-chromosphere to 1 AU and that accounts for radiative losses in the transition region, we have studied the difference between the ... -
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 ... -
Somulator – A tool for social media training
(Forsvarets forskningsinstitutt, 2024-03)Somulator is a social media training environment tool providing a realistic simulation of the information environment created by the Norwegian Defence Research Establishment. -
Sonar scattering from the sea bottom near the Norwegian coast
(2017)High false alarm rates on active sonar systems in shallow waters is a well known problem which may be a limiting factor for the sonar performance. One way to reduce the false alarm rate is through supervised learning and ... -
Sonar simulation for the Action Speed Tactical Trainer at KNM Tordenskjold
(2008)This report describes a sonar simulation module planned implemented into Kongsberg Defence and Aerospace’s Action Speed Tactical Trainer. A land-based and modular training facility for frigate crew members. The sonar ... -
SONATE 2011 - a decision aid tool to mitigate the impact of sonar operations on marine life
(2011-11-15)The Royal Norwegian Navy has five frigates equipped with 1-8 kHz active sonars. Such sonars are potentially harmful to marine life. Mass strandings of whales have been claimed to be caused by naval sonar exercises. ... -
SONATE 2015 - a decision aid tool to mitigate the impact of sonar operations on marine life
(2015-06-04)The Royal Norwegian Navy has five frigates equipped with 1-8 kHz active sonars. Such sonars are potentially harmful to marine life. Naval sonar exercises have been accused of causing whale stranding and habitat exclusion ... -
SONATE 2020 – a decision aid tool to mitigate the impact of naval sonar operations on marine life
(2021-06-14)SONATE is a decision aid tool for planning of sonar exercises, to mitigate impact on marine life. The story of SONATE started with the Nansen-class frigates of the Norwegian Navy, which are equipped with 1-8 kHz sonars. ... -
SONATE 3.0 : a decision aid system to mitigate the impact of sonar operations in Norwegian waters on marine life
(2008)The Royal Norwegian Navy has purchased five new frigates equipped with 1-8 kHz active sonars. Such sonars are potentially harmful to marine life. Mass strandings of whales have been claimed to be caused by naval sonar ... -
Sosiale teknologier for samhandling og nettverking : fra publisering til deltagelse og sosial interaksjon
(2007)En generell militær trend er det økte fokuset på ”evne til samarbeid”. Bakgrunn for denne rapporten er ønske om å ta i bruk og utnytte ”moderne” informasjons- og kommunikasjonsteknologi (IKT) for å øke den militære evnen ... -
Sound propagation in regions of variable oceanography - a summary of student work at NTNU
(2010)Two ray tracing programs, Lybin and Ray5, have been used in student projects at NTNU to study wave propagation in range dependent environments. For a given set of sound speed profiles obtained during a FFI measuring ... -
Source Localization With Multiple Hydrophone Arrays via Matched-Field Processing
(2016)This paper considers approaches to combining information from multiple arrays in matched-field processing (MFP) for underwater acoustic source localization. The standard approach is to apply conventional MFP for each array ... -
Sourcing for Forsvarets IKT-virksomhet – skisse til rammeverk
(2022-12-12)Strategisk samarbeid har fått økt oppmerksomhet i de siste tre langtidsperiodene. Forsvarsdepartementet har etablert prinsippet så sivilt som mulig og så militært som nødvendig for at Forsvaret skal kunne nyttiggjøre seg ... -
South Africa´s nuclear weapons programme
(2008)In the 1970s and 1980s, South Africa had a secret nuclear weapons programme and built up a small arsenal of six simple, gun-type nuclear bombs. The bombs were deliverable by airplane, but were probably only intended as a ... -
The Space of Influence: Developing a New Method to Conceptualise Foreign Information Manipulation and Interference on Social Media
(2023-05)Foreign information manipulation and interference (FIMI) on social media is a fast- evolving threat to democracies. However, there is a growing need to systematically conceptualise the phenomenon. General Morphological ... -
Space-based AIS : theoretical considerations and system parameter optimization
(2006)The recently introduced Universal Automatic Identification System (AIS) is a ship-to-ship and ship-to-shore reporting system based on broadcasting of messages in the maritime VHF band. The AIS messages could also be ... -
Spaceborne Bistatic SAR Processing Using the EETF4 Algorithm
(2009)In this letter, the fourth-order extended exact transfer function (EETF4) is adapted for spaceborne bistatic synthetic aperture radar (SAR) processing. The problems with high squint and large bistatic Doppler centroid ... -
Sparse Phase Estimation and Processing of Independent Coherent Processing Intervals
(2017)Radars employing electronically steering arrays are capable of instantaneously altering the direction of the beam along with other parameters. This flexibility offers great opportunities to a radar as it may e.g. divide ...