Articles: Recent submissions
Now showing items 241-260 of 884
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Generative Adversarial Immitation Learning for Steering an Unmanned Surface Vehicle
(2020-02)The task of obstacle avoidance using maritime vessels, such as Unmanned Surface Vehicles (USV), has traditionally been solved using specialized modules that are designed and optimized separately. However, this approach ... -
Path Planning for UGVs Based on Traversability Hybrid A*
(2021-02-01)In this letter, a new method of path planning for unmanned ground vehicles (UGVs) on terrain is developed. For UGVs moving on terrain, path traversability and collision avoidance are important factors. If traversability ... -
Variability of Gaseous Attenuation at Very Low Elevation Angle Slant Paths; Measurements and Modelling
(2020-07-08)Gaseous attenuation variability for a 3.2° elevation angle satellite link operating at 20 GHz in the Norwegian Arctic is analyzed and compared with different models. At a very low elevation link like this one, gaseous ... -
Deep temporal detection - A machine learning approach to multiple-dwell target detection
(2020)Detecting small targets, such as an Unmanned Aerial Vehicle (UAV) in high clutter and non-homogeneous environments is challenging for a radar system. Traditional Constant False Alarm Rate (CFAR) detectors have suboptimal ... -
When Insularity Becomes a Problem: The Literature on Jihadism in Jordan
(2020-02-07)This article offers a review of the literature on Jordanian jihadism. While excellent work has been done, particularly on the phenomenon’s history and ideologues such as Abu Muhammad al-Maqdisi, several topics remain ... -
Sparse range-Doppler image construction with neural networks
(2020-06-11)The principles outlined by compressed sensing can permit a sensor to collect reduced amount of data and still reconstruct an exact outcome. This can for example be used to generate super-resolution sparse range-Doppler ... -
Multimodal Multispectral Imaging System for Small UAVs
(2020-01-17)Multispectral imaging is an attractive sensing modality for small unmanned aerial vehicles (UAVs) in numerous applications. The most compact spectral camera architecture is based on spectral filters in the focal plane. ... -
Changes in inoperability for interdependent industry sectors in Norway from 2012 to 2017
(2021-03)The purpose of this work has been to investigate changes in interdependencies between Norway's mainland industry sectors and how it might affect national security. To this end, the interdependencies were analysed by using ... -
Assessment of the impact of wastewater and sewage sludge treatment methods on antimicrobial resistance. Scientific opinion of the Panel on Microbial Ecology of the Norwegian Scientific Committee for Food and Environment
(2020-10-01)The request from NFSA and NEA: Antimicrobial agents and microorganisms are introduced to sewage systems by different human activities, from private homes, institutions such as schools and hospitals, office buildings, ... -
Hvorfor så ambivalent? USAs politikk overfor EUs forsvarsambisjoner
(2021-01-19)Artikkelen diskuterer forholdet mellom den europeiske integrasjonsprosessen og det atlantiske samarbeidet under USAs ledelse. Problemstillingen artikkelen besvarer er hvilke tilnærminger Trump-administrasjonen har hatt til ... -
Redrawing borders, reshaping orders: Russia’s quest for dominance in the Black Sea region
(2021-01-04)Since Russia’s annexation of Crimea in March 2014, severe limitations have been placed on Ukraine’s coastal state rights and navigational freedoms in the Black and Azov Seas and the Kerch Strait. The "Kerch Strait clash" ... -
Towards simulation-based verification of autonomous navigation systems
(2020-09)Autonomous ships are expected to change water-based transport of both cargo and people, and large investments are being made internationally. There are many reasons for such transformation and interest, including shifting ... -
A framework for automatic behavior generation in multi-function swarms
(2020)Multi-function swarms are swarms that solve multiple tasks at once. For example, a quadcopter swarm could be tasked with exploring an area of interest while simultaneously functioning as ad-hoc relays. With this type of ... -
Vehicle Safety of the Velocity Obstacle Algorithm
(2021-01)This paper presents a mathematical analysis of the velocity obstacle algorithm applied to a nonholonomic vehicle for avoiding a moving obstacle in the plane. The velocity obstacle algorithm can be used for local navigation ... -
When the noise goes on: received sound energy predicts sperm whale responses to both intermittent and continuous navy sonar
(2020-04-08)Anthropogenic noise sources range from intermittent to continuous, with seismic and navy sonar technology moving towards near-continuous transmissions. Continuous active sonar (CAS) may be used at a lower amplitude than ... -
Automatic object recognition within point clouds in clustered or scattered scenes
(2020)We consider the problem of automatically locating, classifying and identifying an object within a point cloud that has been acquired by scanning a scene with a ladar. The recent work [E. Bae, Automatic scene understanding ... -
Performance evaluation of high-volume electret filter air samplers in aerosol microbiome research
(2020)Background Reliable identification and quantification of bioaerosols is fundamental in aerosol microbiome research, highlighting the importance of using sampling equipment with well-defined performance characteristics. ... -
Detection: how many pixels are required?
(2020-09-23)In this work, we studied how detection range of a small target changes as a function of the number of defined target pixels. The intuitively simplest method to look for a target in IR images is to look for the “hottest” ... -
MRTD: to NUC or not to NUC?
(2020-09-21)We applied a simple method to estimate the Minimum Resolvable Temperature Difference (MRTD) of an LWIR and an MWIR camera. A so-called Siemens star, in our case a thin, black aluminum plate framing a circle that is missing ... -
Three-dimensional signal decomposition of infrared image sequences and large-scale non-uniformity analysis
(2020-09-20)The three-dimensional noise model is a methodology to analyse the noise of a thermal imaging sensor, such as an infrared (IR) camera. This allows us to decompose a noisy signal into components and quantify properties such ...