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 20 of 31 for “"Radar imaging"”.
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Synthetic Aperture Radar Imaging Simulated in MATLAB
… of generating images using synthetic aperture radar (SAR) simulations coded in MATLAB. The project is supervised by Dr. John Saghri and sponsored by Raytheon Space and Airborne Systems. SAR is a type of imaging radar in which the relative movement of the antenna with respect to the target is …
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Implementation of Range Autofocus for SAR Radar Imaging
<p>The range calculation for an FMCW radar depends on accurate linear modulation. In some circumstances, linear modulation may not be available and must be corrected for. This paper describes an autofocus technique used to correct for phase error due to non-linearities in the components of a FMCW …
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High Resolution Simulation of Synthetic Aperture Radar Imaging
… more realistic simulation of Synthetic Aperture Radar (SAR) that has the ability to image detailed targets, and that can be used for Automatic Target Recognition (ATR). This thesis project is part of ongoing SAR ATR research at California Polytechnic State University (Cal Poly) sponsored by …
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Radar Imaging Applications for Mining and Landmine Detection
… hidden targets of concern. Ground-penetrating radar (GPR) is used to detect and characterize hidden targets that pose safety hazards at Earth's surface, within shallow soil, and within rock. The resulting images detect unexploded ordnance (UXO) and detect fractures that pose collapse hazards in …
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Discrete-time band-limited extrapolation algorithms for radar imaging systems
This thesis is a study of band-limited extrapolation algorithms. In the one-dimensional case, we examine the Weighted-Norm, Iterative Weighted-Norm, Control-Point, Data Segmentation, and Cascade Form algorithms. Each modifies the reconstruction subspace used in the extrapolation. The basic …
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Numerical techniques for electromagnetic applications in microelectronic and radar imaging systems
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.
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Microwave scattering and synthetic aperture radar imaging of targets buried in random media
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1993.
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A compressed sensing approach to block-iterative equalization: connections and applications to radar imaging reconstruction
… recursions are illustrated under a novel 3D MIMO Radar formulation, where the CAMP algorithm is shown to fail with respect to important performance measures.
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Adapting Seismic Processing Techniques for Data Preconditioning in Radar Imaging of Highly Dissipative and Dispersive Media
… frequency electromagnetic waves for biomedical imaging applications has interested researchers for decades. Promising results have been reported for several approaches to microwave breast imaging, including radar-based imaging applied to realistic numerical breast phantoms and patient studies. …
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Using an Agilent E5071B Vector Network Analyzer and Rotating Platform
… technology has become very famous amongst the radar imaging community. This system is well suited for tomographic imaging as it offers high special resolution and a low probability of detection. Some of the UWB applications include ground penetrating radar, medical imaging and some military …
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Ionospheric imaging with compressed sensing
… from compressed sensing can benefit ionospheric imaging in two ways. Compressed sensing suggests signal reconstruction techniques that take advantage of sparsity, offering us new ways of interpreting data, especially for undersampled problems. One example is radar imaging. We explain how …
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Benchmarking and analysis of the SRC-6E reconfigurable computing system
… the SRC-6E reconfigurable computing system for a radar signal processing application and documents the process of creating and importing VHDL code to configure the user definable logic on the SRC-6E. A false-target radar-imaging algorithm was chosen and implemented on the SRC-6E. Data from …
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High Angular Resolution Beam Steering Terahertz Antenna Arrays for Imaging Applications
… technology 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 …
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Fast Algorithm for Modeling of Rain Events in Weather Radar Imagery
Weather radar imagery is important for several remote sensing applications including tracking of storm fronts and radar echo classification. In particular, tracking of precipitation events is useful for both forecasting and classification of rain/non-rain events since non-rain events usually appear …
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Orthogonally coded MIMO array for Ka-band (26.5 - 40 GHz) millimeter-wave imaging
… paper introduces a multi-static millimeter wave imaging system that utilizes binary phase-shift keying (BPSK) modulation of the intermediate frequency (IF) signals with orthogonal codes, commonly called code division multiple access (CDMA). This method allows the array to distinguish the radar …
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Tomographic processing of synthetic aperture radar signals for enhanced resolution
Spotlight-mode synthetic aperture radar imaging is studied from the viewpoint of tomographic signal processing which allows the relaxation of the nearly-universal assumption that plane waves pass over the ground patch. This allows high-quality image reconstruction in the face of arbitrary amounts …
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A GEOMETRIC VARIATIONAL APPROACH TO SHAPE INVERSION FOR RADAR
… for dense shape reconstruction of scenes using radar. For a given scene and antennas taking measurements from the scene, our method iteratively estimates the scene shape using the measurements. To this end, we use a deformable shape evolution approach which seeks to match the received signal to …
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Naming Venus: An Exploration of Goddesses, Heroines, and Famous Women
… came just fifty years ago with the invention of radar imaging, leading to the discovery (and naming) of hundreds of new features in a relatively short length of time.</p> <p>The rapid naming of Venus is a case study on the impact of planetary nomenclature — the process of naming features on other …
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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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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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