Browsing Articles by Title
Now showing items 471-490 of 842
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Modeling FMCW Radar for Subsurface Analysis
(2022-04-05)Determining subsurface properties through ground penetrating radar sounding can be challenging, especially in planetary exploration, where little is known about the terrain and additional observations are limited. Analysis ... -
MODELING IRON ABUNDANCE ENHANCEMENTS IN THE SLOW SOLAR WIND
(2011)We have studied the behavior of Fe ions in the slow solar wind, using a fluid model extending from the chromosphere to 1 AU. Emphasis is on elemental "pileup" in the corona, i.e., a region where the Fe density increases ... -
Modeling of a back-illuminated HgCdTe MWIR avalanche photodiode with alloy gradients
(2015)We present results from 2D Monte Carlo simulations of a mid-wave infrared (MWIR) back-illuminated planar n-on-p HgCdTe electron-initiated avalanche photodiode (e- APD). The main objective of this work has been to study the ... -
Modeling potential masking of echolocating sperm whales exposed to continuous 1-2 kHz naval sonar
(2021-04-30)Modern active sonar systems can (almost) continuously transmit and receive sound, which can lead to more masking of important sounds for marine mammals than conventional pulsed sonar systems transmitting at a much lower ... -
Modeling the behavior of a hierarchy of command agents with context-based reasoning
(2017)Context-based reasoning is a paradigm for modeling agent behavior that is based on the idea that humans only use a small portion of their knowledge at any given time. It was specially designed to represent human tactical ... -
Modeling the effect of random roughness on synthetic aperture sonar image statistics
(2022-09-02)A model has been developed to predict the effect of random seafloor roughness on synthetic aperture sonar (SAS) image statistics, based on the composite roughness approximation–a physical scattering model. The continuous ... -
Modelled sonar and target depth distributions for active sonar operations in realistic environments
(2022-09-08)Target detection performance of mid-frequency active sonars depends heavily on both sonar and target depth. For a given target depth, a sonar performance model may help predict a sonar depth that maximizes the detection ... -
Models for predicting impact sensitivity of energetic materials based on the trigger linkage hypothesis and Arrhenius kinetics
(2020)In order to predict the impact sensitivity of high explosives, we designed and evaluated several models based on the trigger linkage hypothesis and the Arrhenius equation. To this effect, we calculated the heat of detonation, ... -
The modus operandi of jihadi terrorists in Europe
(2014)This article provides the most thorough overview yet of how jihadis have plotted terrorist attacks in Europe. Drawing on a database of 122 incidents, we review trends in weapon types, attack types and target types in the ... -
A Monte Carlo approach to evaluate stray laser energy from the F-35 Lightning II
(2020-04-23)The F-35 Lightning II has a powerful combat laser designator operating at a wavelength and energy levels that are damaging to the human eye at a pulse level. Due to the faceted design of the Electro Optical Targeting System ... -
Moral outrage: The generative power of political emotions.
(2018)Moral outrage has until now been conceptualized as a call to action, a reaction to injustice and transgressions, and a forceful motor for democratic participation, acts of civil disobedience, and violent and illicit action. ... -
The Motivation to Serve in the Military Among Swedish and Norwegian Soldiers. A Comparative Study
(2020)The geographic location of Sweden and Norway, combined with a deteriorated security situation in the Nordic Region and a renewed focus on national defense, makes the development of their armed forces a hot topic. In ... -
MRTD: Man versus machine
(2018)We present Minimum-Resolvable Temperature Difference (MRTD) curves obtained by letting an ensemble of observers judge how many of the six four-bar patterns they can “see” in a set of images taken with different bar-to-background ... -
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 ... -
Multi-channel and multi-polarisation ship detection
(2012)Norway's large ocean areas in the North require efficient methods to detect vessels in the High North. Radar satellites in orbit today offer dual- or quad-polarised data, which ease the task of detecting vessels in a SAR ... -
Multi-gigawatt peak power post-compression in a bulk multi-pass cell at a high repetition rate
(2022-09-27)The output of a 200 kHz, 34 W, 300 fs ytterbium amplifier is compressed to 31 fs with >88% efficiency to reach a peak power of 2.5 GW, which to date is a record for a singlestage bulk multi-pass cell. Despite operation ... -
Multi-instrument comparisons of D-region plasma measurements
(2013)The ECOMA (Existence and Charge state Of Meteoric dust grains in the middle Atmosphere) series of sounding rocket flights consisted of nine flights with almost identical payload design and flight characteristics. All flights ... -
Multi-phase performance evaluation for modern minehunting systems
(2019-05-10)Many NATO navies are in the process of replacing their dedicated minehunting vessels with systems of heterogeneous, unmanned modules. While traditional ship-based assets prosecute sonar contacts in sequence through to ... -
Multi-watt, multi-octave, mid-infrared femtosecond source
(2018)Spectroscopy in the wavelength range from 2 to 11 μm (900 to 5000 cm−1) implies a multitude of applications in fundamental physics, chemistry, as well as environmental and life sciences. The related vibrational transitions, ...