Search
Now showing items 61-70 of 641
Reducing scalloping in synthetic aperture radar images using a composite image transform
(2015)
In burst mode SAR imaging, echo intensity depends on the target's azimuth position in the antenna pattern.
As a result, an amplitude modulation known as scalloping may appear, particularly in ScanSAR images
of ocean ...
Consequence assessment of indoor dispersion of sarin-A hypothetical scenario
(2010)
The objective of this study is to provide a hypothetical scenario of indoor dispersion of the highly toxic nerve agent sarin in a large building, which can be used as a starting point for discussion, planning, training and ...
Feasibility of a standard for full specification of spectral imager performance
(2017)
The current state of the art of specifying spectral imagers falls short of what is needed. Commercial datasheets do not adequately reflect the performance of hyperspectral imagers offered as standard products. In particular, ...
Military small arms fire in association with acute decrements in lung function
(2017)
Objective After introduction of unleaded ammunition, Norwegian Armed Forces received reports of acute respiratory symptoms in soldiers after exposure to fumes from firing the standard weapon, HK416. The aim of the present ...
Projected area and drag coefficient of high velocity irregular fragments that rotate or tumble
(2017)
3 degrees of freedom (DOF) exterior ballistic computer models are used in fragment studies to calculate individual trajectories of each fragment based on drag coefficient and the projected (presented) area in the direction ...
Lack of behavioural responses of humpback whales (Megaptera novaeangliae) indicate limited effectiveness of sonar mitigation
(2017)
Exposure to underwater sound can cause permanent hearing loss and other physiological effects in marine animals. To reduce this risk, naval sonars are sometimes gradually increased in intensity at the start of transmission ...
Marine mammals and sonar: dose-response studies, the risk-disturbance hypothesis and the role of exposure context
(2017)
Marine mammals may be negatively affected by anthropogenic noise. Behavioural response studies (BRS) aim to establish a relationship between noise exposure conditions (dose) from a potential stressor and associated behavioural ...
Wideband Synthetic Aperture Sonar Back Projection with Maximization of Wave Number Domain Support
(2017)
Wideband and widebeam synthetic aperture sonar (SAS) can provide information on the frequency- and aspect-dependent scattering in a scene. We suggest an approach to predict the quality of the sensor data over the available ...
Multichannel open tubular enzyme reactor online coupled with mass spectrometry for detecting ricin
(2017)
For counterterrorism purposes, a selective nano liquid chromatography–mass spectrometry (nanoLC-MS) platform was developed for detecting the highly lethal protein ricin from castor bean extract. Manual sample preparation ...