Browsing by Title
Now showing items 2359-2378 of 2866
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Software-Defined Underwater Acoustic Modems: Historical Review and the NILUS Approach
(2017)Flexible/adaptive acoustic modems that are reprogrammable/reconfigurable at all layers of the communication stack, either by a user or by means of autonomous decisions, are considered as an important enabler for interoperability ... -
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 ...