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Now showing items 81-90 of 118
Information capacity as a figure of merit for spectral imagers: the trade-off between resolution and coregistration
(2013)
The performance of spectral imagers is customarily described by several characteristics including resolution, noise, and coregistration. These must be traded off against each other in a practical imager design. This paper ...
An ATR architecture for algorithm development and testing
(2013)
A research platform with four cameras in the infrared and visible spectral domains is under development at the Norwegian Defence Research Establishment (FFI). The platform will be mounted on a high-speed jet aircraft and ...
Intracavity molecular spectroscopy in the mid-IR using ultra-broadband optical parametric oscillator
(2013)
We have performed intracavity molecular spectroscopy of water vapor, isotopic carbon dioxide, methane, acetylene, carbon monoxide, formaldehyde and other gases using broadband mid-IR sync-pumped OPO sources (PPLN-based OPO ...
High-pulse-energy, linear optical parametric oscillator with narrow and symmetrical far field
(2013)
A new method to obtain a narrow and symmetrical far field from a high-pulse-energy optical parametric oscillator (OPO) with a linear resonator has been tested. The OPO employs two identical nonlinear crystals that are cut ...
Improved estimation of oceanographic climatology using empirical orthogonal functions and clustering
(2013)
Vertical profiles of temperature, salinity, and sound speed velocity are used in numerous applications where accurate vertical profiles are crucial. Conventional climatological representations of vertical oceanographic ...
Three-dimensional multiple-source focalization in an uncertain ocean environment
(2013)
This letter develops a Bayesian focalization approach for three-dimensional localization of an unknown number of sources in shallow water with uncertain environmental properties. The algorithm minimizes the Bayesian ...
Propagation and scattering effects in underwater acoustic communication channels
(2013)
Systematic measurements were performed to characterize shallow-water acoustic propagation channels for applications in the field of underwater communications. The survey was conducted in northern Europe and covers the ...
Long-range tropospheric transport of uranium and plutonium weapons fallout from Semipalatinsk nuclear test site to Norway
(2013)
A combination of state-of-the-art isotopic fingerprinting techniques and atmospheric transport modelling using real-time historical meteorological data has been used to demonstrate direct tropospheric transport of radioactive ...
Bringing the economy back in: The political economy of security sector reform
(2013)
The mechanisms underlying the relation between development and security are difficult to define and poorly understood. This has not hindered various donor countries, NGOs, or international organizations from designing and ...
On-line solid phase extraction-liquid chromatography-mass spectrometry for trace determination of nerve agent degradation products in water samples
(2013)
Three primary nerve agent degradation products (ethyl-, isopropyl- and pinacolyl methylphosphonic acid) have been determined in water samples using on-line solid phase extraction-liquid chromatography and mass spectrometry ...