Sökning: "spatial spectral analysis"
Visar resultat 21 - 25 av 78 avhandlingar innehållade orden spatial spectral analysis.
21. High-End Performance with Low-End Hardware : Analysis of Massive MIMO Base Station Transceivers
Sammanfattning : Massive MIMO (multiple-input–multiple-output) is a multi-antenna technology for cellular wireless communication, where the base station uses a large number of individually controllable antennas to multiplex users spatially. This technology can provide a high spectral efficiency. LÄS MER
22. Quantitative EEG analysis : temporal variability and clinical applications
Sammanfattning : The quantification of the EEG power (qEEG) in different frequency bands, and their spatial distribution improve the sensitivity of the technique, although questions have been raised about the reproducibility of the results. The aim of the present work was to study the reproducibility of some quantitative parameters in clinical routine EEG, and their clinical application in the study of patients with type I diabetes. LÄS MER
23. Spectral Mammography with X-Ray Optics and a Photon-Counting Detector
Sammanfattning : Early detection is vital to successfully treating breast cancer, and mammography screening is the most efficient and wide-spread method to reach this goal. Imaging low-contrast targets, while minimizing the radiation exposure to a large population is, however, a major challenge. LÄS MER
24. Fundamental Studies on Direct Injection Nebulisers for Sample Introduction in ICP Spectrometry : Aerosol Properties, ICP Characteristics and Analytical Performance
Sammanfattning : The performance of different types of nebulisers: Vulkan direct injection nebuliser (Vulkan DIN), direct injection high efficiency nebuliser (DIHEN), microconcentric nebuliser coupled to cyclonic or double pass spray chamber (MCN-C or MCN-DP, respectively) was investigated and compared when used for sample introduction to ICP-MS or ICP-OES. With ICP-OES, in axial viewing mode, intensity distributions across the radius of the plasma (radial intensity profiles) were determined for different spectral lines with Esum 1. LÄS MER
25. Spatially Adaptive Analysis and Segmentation of Polarimetric SAR Data
Sammanfattning : In recent years, Polarimetric Synthetic Aperture Radar (PolSAR) has been one of the most important instruments for earth observation, and is increasingly used in various remote sensing applications. Statistical modelling and scattering analysis are two main ways for PolSAR data interpretation, and have been intensively investigated in the past two decades. LÄS MER