75392 research outputs found
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Optimal design of control law under uncertainty by dynamic programming
No full textscore: 9collation: 203-22
Analiza skali czasu w wymiarowaniu interfejsów z ruchem pakietowym o własnościach samopodobieństwa
No full textscore: 4collation: 1524-153
Laboratory measurements of the "Pi of the Sky" optical system
No full textabstractEN: The ultimate goal of the "Pi of the Sky" apparatus is observation of optical flashes of astronomical origin and other light sources variable on short timescales, down to tens of seconds. We search mainly for optical emissions of Gamma Ray Bursts, but also variable stars, novae, blazars, etc. This task requires a precise photometry - accurate measurement of the source's brightness (and it's variability). "Pi of the Sky" single cameras' field of view is about 20° x 20°. This causes a significant deformation of a point spread function (PSF), reducing quality of brightness measurement with standard photometric algorithms. To improve photometry, an attempt to investigate PSF based on real star images was made. However, results turned out to be inconclusive due to miscellaneous sky-observing effects. Therefore we decided to perform laboratory measurements, using a CCD camera and an artificial light source as a star simulator. This work shows preliminary results of this study - a set of high resolution PSF shapes, pixel response and pixel sensitivity functions. Finally, an idea how to simulate a real star image in the "Pi of the Sky" system is presented.score: 10collation: 75020E-1 - 75020E-1
Uncertainty of complex permittivity measurements by split-post dielectric resonator technique
No full textscore: 24collation: 2673-267
