Articles: Recent submissions
Now showing items 441-460 of 863
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Mechanical Properties of Smokeless Composite Rocket Propellants Based on Prilled Ammonium Dinitramide
(2012)Ammonium dinitramide (ADN) is a high performance solid oxidizer of interest for use in high impulse and smokeless composite rocket propellant formulations. While rocket propellants based on ADN may be both efficient, clean ... -
Analysis of detection performance of incoherent range walk compensation for passive radar
(2015)This paper analyzes the performance of an incoherent range walk compensation method for passive radar systems. The method utilizes the velocity information in the range-Doppler map, and no detection before compensation ... -
Is established knowledge about cross-cultural differences in individualism–collectivism not applicable to the military? A multi-method study of cross-cultural differences in behavior.
(2017)Preparing for international military collaboration includes raising knowledge about cultural differences. The differences in individualism–collectivism between countries are among the most central aspects likely to impact ... -
Bandwidth optimizations for standards-based publish/subscribe in disadvantaged grids
(2012)NATO has identified Web services as a key enabler for its network enabled capability. Web services facilitate interoperability, easy integration and use of commercial off-the-shelf components, and while request/response-based ... -
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 ... -
Intracavity trace molecular detection with a broadband mid-IR frequency comb source
(2013)Ultrasensitive detection of methane, isotopic carbon dioxide, carbon monoxide, formaldehyde, acetylene, and ethylene is performed in the spectral range 2.5–5 μm using intracavity spectroscopy in broadband optical parametric ... -
Behavioral Responses of Captive Herring to Sonar Signals (1-1.6 kHz) of a Naval Frigate Throughout a Yearly Cycle
(2012)Atlantic herring, Clupea harengus, is a hearing specialist, and several studies have demonstrated strong responses to man-made noise, for example, from an approaching vessel. To avoid negative impacts from naval sonar ... -
ERS tandem InSAR processing for DEM generation, glacier motion estimation and coherence analysis on Svalbard
(2003)This paper describes the unique InSAR (Interferometric Synthetic Aperture Radar) processing algorithms at Norwegian Defence Research Establishment (FFI) and how ERS (European Remote Sensing Satellite) tandem data are used ... -
High resolution spaceborne INSAR simulation with extended scenes
(2005)The Inverse–EETF4 (Extended Exact Transfer Function 4th order) is used to simulate raw data and a complete INSAR processing chain for high squint has been developed. Phase differences for a spaceborne INSAR geometry are ... -
Survey of Key Management in Ad Hoc Networks
(2006)The wireless and dynamic nature of mobile ad hoc networks (MANETs) leaves them more vulnerable to security attacks than their wired counterparts. The nodes act both as routers and as communication end points. This makes ... -
Turbulence characterization and image processing data sets from a NATO RTO SET 165 trial in Dayton, Ohio, USA
(2012)The performance of optical systems is degraded by atmospheric turbulence. Over propagation distances that exceed several kilometers, it is difficult to evaluate its impact because of terrain variability - a factor that ... -
Estimating the pixel footprint distribution for image fusion by ray tracing lines of sight in a Monte Carlo scheme
(2013)Images from airborne cameras can be a valuable resource for data fusion, but this typically requires them to be georeferenced. This usually implies that the information of every pixel should be accompanied by a single ... -
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 ... -
Optical parametric oscillators with high pulse energy and beam quality
(2010)A new method for obtaining high beam quality from high pulse energy optical parametric oscillators (OPOs) is demonstrated. By using different nonlinear crystals that have walk-off in orthogonal directions but are type 2 ... -
Optimal classification of standoff bioaerosol measurements using evolutionary algorithms
(2011)Early warning systems based on standoff detection of biological aerosols require real-time signal processing of a large quantity of high-dimensional data, challenging the systems efficiency in terms of both computational ... -
Geolocation and Stereo Height estimation Using TerraSAR-X Spotlight Image Data
(2011)We have studied the geographic position of several high-resolution spotlight TSX images by investigating the location of deployed radar corner reflectors. Results show that the geolocation accuracy is better than the ... -
Characterization of Variable Density 3D Printed Materials for Broadband GRIN Lenses
(2017)In this work we design, simulate, manufacture and measure blocks made of variable density plastic. The density is controlled through varying the size of small cubes at the intersections of a fine grid. This structure is ... -
Measurements of IR propagation in the marine boundary layer during the September 2011 SQUIRREL trial
(2012)A multinational field trial (SQUIRREL) was performed at the Eckernförder Bucht, in the Baltic Sea, during September 2011 to study infrared ship signature and atmospheric propagation effects close to the sea surface in a ... -
Federated Identity Management in a Tactical Multi-Domain Network
(2011)Identity Management maintains information regarding actors of an Information System, like users, equipment and services. One important service is to disseminate and validate credentials for the purpose of authentication ... -
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 ...