40 research outputs found
Artificial neural network-based inversion technique for extracting ocean surface wave spectra from SAR images
No full textInternational Geoscience and Remote Sensing Symposium (IGARSS)31193-1195IGRS
Performance Analysis of Multivariate Super-resolution Processing of Polarimetric Synthetic Aperture Radar Tomography
No full textINDEPENDENT COMPONENT ANALYSIS OF POLARIMETRIC SAR DATA FOR SEPARATING GROUND AND VEGETATION COMPONENTS
No full text
Independent component analysis of polarimetric SAR data for separating ground and vegetation components
No full textMatrix inversion in spatial frequency analysis of electromagnetic scattering and radiation
No full textNarrowband Bistatic Synthetic Aperture Radar Ambiguity Function Analysis and Design using Angular Harmonics
No full textTopics in Millimeter-Wave Imaging Arrays
Get PDFIn this thesis two different types of antenna arrays are investigated as possible configurations for two-dimensional diffraction limited imaging arrays. The first configuration is the "fly's-eye" array of microlenses. It is shown that this configuration may be utilized to achieve diffraction limited imaging with theoretical coupling efficiencies of around 50%. The other configuration is the two-dimensional horn array. It is shown that in this configuration, wide-angled horns etched into silicon achieve theoretical coupling efficiencies of 60%. A design for a two-dimensional imaging array, using horn elements of aperture size 1.5λ0 was suggested. Also covered in this thesis are the radiation losses and the substrate-mode losses of coplanar transmission lines. It is shown that at millimeter-wave frequencies these losses are prohibitively high. Finally in the appendix a simulation of Schottky diode mixers is described as a possible design tool for analyzing millimeter-wave detector circuits.</p
