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ESTIMATING RANGE DEPENDENT SEDIMENT THICKNESS AND REFLECTION COEFFICIENTS FROM BATHYMETRIC DATA FOR IMPROVED SONAR PERFORMANCE MODELLING
(2019)Knowledge about the underwater environment is critical to anti-submarine warfare operations in littoral waters. The sonar settings and depth selections can significantly affect the predicted sonar performance. Bathymetry ... -
Distributed fusion in underwater sensor networks: Fusing bearing information
(2019)In underwater sensor networks, distributed data fusion may be more efficient than centralized fusion because the limited data transmission capacity can make it difficult to collect all required sensor information at a ... -
Laminar burning velocity of gases vented from failed Li-ion batteries
(2021-06-10)In the last decade, several fires and explosions caused by Li-ion batteries (LIBs) have been reported. This can be attributed to the thermal runaway and catastrophic failures of LIBs that release combustible gases, which ... -
Proud past, exciting future – FFI 75 years
(2021-07-12)On 11 April 1946, the Norwegian Parliament (Stortinget) decided to establish the Norwegian Defence Research Establishment (FFI). FFI has now been supplying knowledge and ideas for an effective Norwegian defence for 75 ... -
AMRISK VERSION 2.5 – documentation of verification tests
(2021-06-29)AMRISK is the software code used for quantitative risk assessment of ammunition storages in Norway and Sweden. As the first part of a major upgrade of the code, AMRISK version 2.5 is finished and verified. The code of ... -
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. ... -
Efficacy of face masks as source control and respiratory protection against transmission of SARS-CoV-2
(2021-06-25)During the COVID-19 pandemic, medical and community face masks have been used extensively by health care workers and the general public to reduce transmission of the SARSCoV-2 virus. This report reviews the available ... -
Dekontaminering av åndedrettsvern for gjenbruk i spesialisthelsetjenesten i Norge – etablering av nasjonal kapasitet for dekontaminering med hydrogenperoksiddamp
(2021-06-23)Covid-19-pandemien har påvirket tilgangen til og forbruket av smittevernutstyr i Norge. Våren 2020 var situasjonen krevende og det var vanskelig å møte det økte behovet. Situasjonen var særlig utfordrende når det gjaldt ... -
Thermal sensor acquisition range estimation
(2021-06-24)There is a large number of factors which may influence the performance of thermal surveillance systems used in any given scenario. Some of the parameters needed for making an accurate performance prediction might be ... -
Ny bonusordning for T35-personell – et frempek på muligheter og utfordringer
(2021-06-21)Personell i Forsvaret i stillinger som krever aldersavhengig kompetanse (strenge krav til helse, psyke og fysikk), tilsettes på kontrakt til de fyller 35 år (T35-kontrakt). Personell på T35-kontrakt som må avslutte sitt ... -
Evaluation of Message Broker Approaches for Information Exchange in Disadvantaged Tactical Networks in a Federated Environment
(2020)The research task group NATO STO/IST-150 «NATO Core Services profiling for Hybrid Tactical Networks» is working towards profiling Core Services for the tactical domain, which can be described as DIL (disconnected, intermittent ... -
A Novel IoBT Security Assessment Framework: LoRaWAN Case Study
(2020)The Internet of Things (IoT) is interesting because this potentially disruptive technology can also be used as a low-cost approach to augment information in military systems. This makes following IoT trends important ... -
A LoRa Mesh Network Asset Tracking Prototype
(2020)Long Range (LoRa) is a low powered wide area communications technology, which uses radio frequencies in the industrial, scientific and medical (ISM) band to transmit data over long distances. Due to these properties, i.e., ... -
Environmental Adaptation of Robot Morphology and Control Through Real-world Evolution
(2021-03-30)Robots operating in the real world will experience a range of different environments and tasks. It is essential for the robot to have the ability to adapt to its surroundings to work efficiently in changing conditions. ... -
Array antennas with defunct elements, a computational study
(2021-06-16)Simulations of transmit and receive properties for a Uniform Linear Array (ULA) antenna with defunct elements have been conducted. Maximum directivity for ULA without tapering is determined by the number of operating ... -
No Country for Old Men? Increasing the Retirement Age in the Norwegian Armed Forces
(2020-05-25)Ageing workforces due to low fertility rates and higher life expectancies challenge modern industrialized economies. In order to secure economic welfare and to balance public budgets, governments worldwide implement reforms ... -
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' ... -
Iridium Certus 700 IP Performance Testing
(2021-06-07)In the last years there have been increased military and civilian activity in the Arctic. Earlier studies from the Norwegian Defence Research Establishment (FFI) have concluded that a non-geostationary satellite system is ... -
Simulation System For Optical Science (SISYFOS) – tutorial, version 2
(2021-06-14)Sisyfos consists of a C++ library and a set of python modules for simulating optical parametric frequency conversion, lasers, or beam propagation in nonlinear or turbulent media. The Sisyfos library contains classes ...