Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 19 of 19 for “"radar images"”.
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Feature extraction from millimetre wave radar images
… segmentation and classification of features on images of wound terrain generated from an airborne millimetre wave radar. The principles of operation of the radar are established and it is shown how an image is produced from this particular radar. The parameters such as wavelength, antenna size …
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Sea surface wave reconstruction from marine radar images
The X-band marine radar is one type of remote sensing technology which is being increasingly used to measure sea surface waves nowadays. In this thesis, how to reconstruct sea surface wave elevation maps from X-band marine radar images and do wave field prediction over short term in real time are …
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Target model generation from multiple synthetic aperture radar images
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
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Target identification theory for synthetic aperture radar images using physics-based signatures
Thesis (Sc.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.
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Optoelectronic Multifractal Wavelet Analysis for Fast and Accurate Detection of Rainfall in Weather Radar Images
… of non-precipitation echoes present in weather radar signals and accurate detection of rainfall. The process employs multifractal analysis using directional Gabor wavelets for accurate detection of the rain events. An optoelectronic joint transform correlator is proposed to provide ultra fast …
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Ground-penetrating radar images of a dye tracer test within the unsaturated zone at the Susquehanna-Shale Hills CZO
Dye tracer and time-lapse ground-penetrating radar (GPR) were used to image preferential flow paths in the shallow, unsaturated zone on hillslopes in two adjacent watersheds within the Susquehanna-Shale Hills Critical Zone Observatory (CZO). At each site we injected about 50 L of water mixed with …
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Application of the backward-smoothing extended Kalman filter to attitude estimation and prediction using radar observations
… spacecraft from a sequence of discrete-time radar images. The raw range-Doppler returns are collected using a ground-based sensor, which is owned and operated by the SSAG, and processed into a set of range/cross-range images. A three-dimensional geometric model is, through computer graphics …
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Motion Compensation of Interferometric Synthetic Aperture Radar
… flight path of a synthetic aperture radar (SAR) lead to inaccurate and defocused radar images. This thesis is an investigation into the improvement of the motion compensation algorithm created for the BYU inteferometric synthetic aperture radar, YINSAR. The existing BYU SAR processing …
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Three applications of satellite borne repeat pass SAR interferometry in Southern Africa
… involves using the phase information inherent in radar images to extract elevation and elevation change information. The process requires very careful co-registration of a pair of complex images of the same scene, followed by the multiplication of the one image by the complex conjugate of the …
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Bayesian super-resolution with application to radar target recognition
… to facilitate automatic target recognition using images generated from a group of associated radar systems. Target recognition algorithms require access to a database of previously recorded or synthesized radar images for the targets of interest, or a database of features based on those images. …
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Development of an aerodynamic/RCS framework for the preliminary design of a hypersonic aircraft
… to changes in every other component. Including Radar Cross Section (RCS) considerations further complicates matters. During preliminary design, this requires the rapid analysis of different aircraft configurations to investigate component interactions and determine performance trends. This …
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Studies of Seismic Sources in Antarctica Using an Extensive Deployment of Broadband Seismographs
… of the exposed volcanic line as well as radar images featuring a recent ash layer supporting the continued magmatic activity in the ECR. My final investigation is into a new type of icequake in East Antarctica associated with wind-glazed small-scale crevasse features. The wave trains are …
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Identification, Characterization and Analysis of Wrench Related Faulting in Southwestern Warren County, Kentucky
… Recent analysis of well log, seismic, and Radar images indicate extensive faulting in the Woodburn area indicative of wrench-fault related activity. A convincing surface expression of the deeper structure can be discerned from Radar imaging, aeromagnetic, and topographic maps of the region. …
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Surface reconstruction from interferometric ISAR data
… the interpretation of Inverse Synthetic Aperture Radar (ISAR) images is to construct a three dimensional (3D) model of the object being imaged. Generally, such models are constructed manually by an analyst based on a series of radar images and whatever other information is available. However, …
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High Angular Resolution Beam Steering Terahertz Antenna Arrays for Imaging Applications
… for many applications, including imaging, radar, communications and other sensing applications due to bandwidth availability, penetration of dielectric materials, and short wavelength, enabling smaller structures. There is particular application in automotive radar imaging, where a narrow …
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Desarrollo de un modelo de geoprocesamiento para la valoración productiva y tributaria de tierras agrícolas en Venezuela
… procesamiento de un DEM derivado de las imágenes radar SRTM, de imágenes Landsat ETM+ y de información climatológica del área. En definitiva se seleccionaron 19 variables como predictoras del modelo y se obtuvo un ajuste a nivel regional con un pseudo R2 de 0.48, estadísticamente significativo …
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Novel measurement system based on electromagnetic sensors on board unmanned aerial vehicles for subsurface imaging and antenna measurement applications
… centran en dos campos de aplicación: subsurface radar imaging (i.e. obtención de imágenes radar bajo la superficie) y medida de antenas en condiciones de operación. Estas aplicaciones se han denominado aplicaciones más allá de lo visible, ya que la capacidad de penetración en medios opacos de los …
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An investigation of complex deformation patterns detected by using InSAR at Llaima and Tendürek volcanoes
… in East Turkey by using synthetic aperture radar interferometry (InSAR). Through modeling of the deformation sources with the extracted displacement data, it was possible to gain insights into potential subsurface processes occurring at these two volcanoes that had been barely studied …
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Predikce deště z meteoradaru
… se zabývá předpovědí počasí s využitím meteoradarových snímků a některých dalších souvisejících faktorů prostřednictvím výpočetního modelu neuronové sítě. Klade si za cíl prozkoumat možnosti predikce pomocí tohoto modelu a experimentálně stanovit co nejúspěšnější konfiguraci modelu pro …