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Multiuser detection
Šimša, Jan
In the invited lecture the principles of multiuser detectors for code division digital signal transmission and their approximations by suboptimum detectors were explained.
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Road detection for mobile robot using image processing
Coufal, Jan ; Štarha, Pavel (referee) ; Krejsa, Jiří (advisor)
Diploma thesis deals with image processing for outdoor environment mobile robot. In first part, the problem is analyzed, general solution is proposed and suitable image processing methods are presented. In second part presented methods are tested and methods with best results are proposed. In third part is particular solution tested on real data.
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Influence of the satellite spatial resolution and scan time on convective storms'overshooting tops detection
Růžičková, Markéta ; Setvák, Martin (advisor) ; Pešice, Petr (referee)
This paper deals with the possibilities of convective storms' overshooting tops detection as seen from satellites. These tops are characterized by a rapid development, their size is only a few kilometres in diameter and they are connected with the presence of hazardous weather. They can be identified as small clusters of very low temperatures in satellite imagery, but this nature depends on the scan time and the scan frequency of the specific satellite and on the other features presence at tops of convective storm. The temporal variability of minimum IR brightness temperatures at the cloud tops of selected convective storms is studied in this paper, namely on the basis of the Meteosat Second Generation (MSG) satellite datasets. But the main emphasis of this work is to analyse the influence of the operative meteorological satellites' spatial resolution on the minimal IR brightness temperature, which is related to height of the cloud top. The datasets acquired by the sensors SEVIRI, AVHRR and MODIS have been chosen for these purposes. Mostly the convective storms that occurred over the Europe in the year 2008 have been diagnosed. The scan time difference must be taken into account when datasets from MSG and the other polar orbit satellites are compared and this difference should be minimal. The minimum IR...
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Detection of weak cathodoluminescence
Horák, Petr ; Schauer, Petr
The major problem of the cathodoluminescent study of poly[methyl(phenyl)silylene] (PMPSi) is the susceptibility of the material investigated to the degradation. The process of degradation causes strong decrease of the CL intensity. Measurement in the synchronous mode can recover signals in the presence of an overwhelming noise and background and can provide high resolution measurement over several orders of magnitude.
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Study of the contrast mechanisms nonconductive and wet samples in ESEM
Linhart, Jan
This paper deals with the study of the contrast mechanisms of the nonconductive and wet samples in environmental scanning electron microscopy (ESEM). The aim of this work is interpretation of contrast mechanisms dependent on conditions of the primary electron beam and methods of signal electrons detection and determination of the optimal detection method.
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