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Relevant bibliographies by topics / Wave imaging / Dissertations / Theses

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Dissertations / Theses on the topic 'Wave imaging'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Valenciano, Alejandro A. "Imaging by wave-equation inversion /." May be available electronically:, 2008. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.

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2

Wintz, Timothée. "Super-resolution in wave imaging." Thesis, Paris Sciences et Lettres (ComUE), 2017. http://www.theses.fr/2017PSLEE052/document.

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Les différentes modalités d’imagerie par ondes présentent chacune des limitations en termes de résolution ou de contraste. Dans ce travail, nous modélisons l’imagerie ultrasonore ultrarapide et présentons des méthodes de reconstruction qui améliorent la précision de l’imagerie ultrasonore. Nous introduisons deux méthodes qui permettent d’augmenter le contraste et de mesurer la position super-résolue et la vitesse dans les vaisseaux sanguins. Nous présentons aussi une méthode de reconstruction des paramètres microscopiques en tomographie d’impédance électrique en utilisant des mesures multifréq

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3

Alomari, Zainab Rami Saleh. "Plane wave imaging beamforming techniques for medical ultrasound imaging." Thesis, University of Leeds, 2017. http://etheses.whiterose.ac.uk/18127/.

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In ultrasound array imaging, the beamforming operation is performed by aligning and processing the received echo signals from each individual array element to form a complete image. This operation can be performed in many different ways, where adaptive and non-adaptive beamformers are considered as the main categories. Adaptive beamformers exploit the statistical correlation between the received data to find a weighting value at the focal point, instead of using a fixed weighting window in non-adaptive beamforming. This results in a significant improvement in the image quality in terms of reso

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4

Schuetz, Christopher Arnim. "Optical techniques for millimeter-wave detection and imaging." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 179 p, 2007. http://proquest.umi.com/pqdweb?did=1397913011&sid=3&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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5

Nova, Lavado Enrique. "Millimeter-wave and terahertz imaging techniques." Doctoral thesis, Universitat Politècnica de Catalunya, 2013. http://hdl.handle.net/10803/129466.

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This thesis presents the development and assessment of imaging techniques in the millimeterwave (mmW) and terahertz frequency bands. In the first part of the thesis, the development of a 94 GHz passive screener based on a total-power radiometer (TPR) with mechanical beamscanning is presented. Several images have been acquired with the TPR screener demonstrator, either in indoor and outdoor environments, serving as a testbed to acquire the know-how required to perform the research presented in the following parts of the thesis. In the second part of the thesis, a theoretical research on the pe

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6

Baylosis, Benito E. "Acoustic imaging of ultrasonic wave propagation." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1994. http://handle.dtic.mil/100.2/ADA290390.

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7

Alexander, Naomi Ellen. "Millimetre-wave imaging and restoration techniques." Thesis, University of Reading, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.419819.

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8

Lévesque, Sylvain. "Acoustical imaging using wave propagation tomography." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/106041.

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9

Macfarlane, David G. "Close range passive millimetre wave imaging." Thesis, University of St Andrews, 2003. http://hdl.handle.net/10023/6482.

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This thesis describes the design and construction of a close range Passive Millimetre Wave (PMMW) scanning thermal imager. Whilst close range PMMW imager has previously been applied to concealed weapon detection at ranges of a few metres, the imager described herein is designed to focus on targets at a range of a few tens of centimetres. In particular, the main design aim was to produce higher resolution thermal maps suitable for medical imaging applications. Imaging at MMW frequencies offers greater penetration depths in lossy dielectric media than conventional infrared imagers, although ther

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10

Kasilingam, Dayalan P. Rutledge David B. "Topics in millimeter-wave imaging arrays /." Diss., Pasadena, Calif. : California Institute of Technology, 1987. http://resolver.caltech.edu/CaltechETD:etd-03012008-134009.

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11

Chen, Chun Hong. "Millimetre-Wave Imaging Scanning Techniques and Components." Thesis, University of Reading, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.485369.

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12

Levine, Ross M. "Ultrasonic guided wave imaging via sparse reconstruction." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/51829.

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Structural health monitoring (SHM) is concerned with the continuous, long-term assessment of structural integrity. One commonly investigated SHM technique uses guided ultrasonic waves, which travel through the structure and interact with damage. Measured signals are then analyzed in software for detection, estimation, and characterization of damage. One common configuration for such a system uses a spatially-distributed array of fixed piezoelectric transducers, which is inexpensive and can cover large areas. Typically, one or more sets of prerecorded baseline signals are measured when the stru

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13

Hornby, Anthony M. "Coherent imaging in guided wave laser resonators." Thesis, Heriot-Watt University, 1995. http://hdl.handle.net/10399/761.

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14

Zhang, Lianhong. "Millimetre wave imaging for concealed target detection." Thesis, Queen Mary, University of London, 2011. http://qmro.qmul.ac.uk/xmlui/handle/123456789/663.

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Concealed weapon detection (CWD) has been a hot topic as the concern about pub- lic safety increases. A variety of approaches for the detection of concealed objects on the human body based on earth magnetic ¯eld distortion, inductive magnetic ¯eld, acoustic and ultrasonic, electromagnetic resonance, MMW (millimetre wave), THz, Infrared, x-ray technologies have been suggested and developed. Among all of them, MMW holographic imaging is considered as a promising approach due to the relatively high penetration and high resolution that it can o®er. Typical concealed target detection methods are cl

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15

Meier, Dominik [Verfasser], and Leonhard M. [Akademischer Betreuer] Reindl. "Millimeter-wave tomographic imaging of composite materials." Freiburg : Universität, 2021. http://d-nb.info/1233197053/34.

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16

Zah, Chung-en Rutledge David B. "Millimeter-wave monolithic Schottky diode imaging arrays /." Diss., Pasadena, Calif. : California Institute of Technology, 1986. http://resolver.caltech.edu/CaltechETD:etd-03112008-080410.

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17

Franke, Daniel. "Fluorescent materials for short-wave infrared imaging." Thesis, Massachusetts Institute of Technology, 2018. https://hdl.handle.net/1721.1/121616.

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This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemistry, 2018<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 223-247).<br>Our understanding of the fundamental processes that drive biology and medicine is, in large part, based on our ability to visualize biological structures and monitor their transformations over time. Fluorescence imaging is one of the most transform

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18

Tew, R. "Imaging theory of surface-breaking discontinuities." Thesis, University of Oxford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380008.

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19

Pratt, Robert Gerhard. "Wave equation methods in cross-well seismic imaging." Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/11464.

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20

Zeitler, Armin. "Investigation of mm-wave imaging and radar systems." Phd thesis, Université Nice Sophia Antipolis, 2013. http://tel.archives-ouvertes.fr/tel-00832647.

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In the last decade, microwave and millimeter-wave systems have gained importance in civil and security applications. Due to an increasing maturity and availability of circuits and components, these systems are getting more compact while being less expensive. Furthermore, quantitative imaging has been conducted at lower frequencies using computational intensive inverse problem algorithms. Due to the ill-posed character of the inverse problem, these algorithms are, in general, very sensitive to noise: the key to their successful application to experimental data is the precision of the measuremen

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21

Mansfeld, Sebastian [Verfasser]. "Spin-Wave Optics: Refraction and Imaging / Sebastian Mansfeld." München : Verlag Dr. Hut, 2012. http://d-nb.info/1028785607/34.

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22

Owda, Amani Yousef. "Medical applications of microwave and millimetre-wave imaging." Thesis, Manchester Metropolitan University, 2018. http://e-space.mmu.ac.uk/622096/.

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This thesis presents a feasibility study of using microwave and millimetre wave radiations to assess burn wounds and the potential for monitoring the healing process under dressing materials, without their removal. As interaction of these types of radiations with the human body is almost exclusively with the skin, there is potential in others areas of medicine such as early skin cancer detection and the diagnosis of skin conditions such as eczema and psoriasis. This study involves developments of experimental methodologies, electromagnetic modelling, and measurements conducted on human skin (i

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23

Fagan, Andrew J. "Continuous wave NMR imaging in the solid state." Thesis, University of Aberdeen, 2004. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU185985.

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The development of a continuous wave NMR imaging system and its application to the study of materials in the solid state is described. The three dimensional, multi-nuclear imaging capability of the system, together with its ability to image materials with extremely short T2* relaxation values, was demonstrated on materials of real scientific and industrial interest such as cements, polymers, rocks, clay minerals, wood, and fuel cells. Hardware and software modifications that were made to a prototype system are described. These included the installation of a new PC and multifunction in/out boar

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24

Zhang, Renyuan, and Siyang Cao. "3D Imaging Millimeter Wave Circular Synthetic Aperture Radar." MDPI AG, 2017. http://hdl.handle.net/10150/624963.

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In this paper, a new millimeter wave 3D imaging radar is proposed. The user just needs to move the radar along a circular track, and high resolution 3D imaging can be generated. The proposed radar uses the movement of itself to synthesize a large aperture in both the azimuth and elevation directions. It can utilize inverse Radon transform to resolve 3D imaging. To improve the sensing result, the compressed sensing approach is further investigated. The simulation and experimental result further illustrated the design. Because a single transceiver circuit is needed, a light, affordable and high

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25

Rebeiz, Gabriel M. Rutledge David B. Rutledge David B. "Monolithic millimeter-wave two-dimensional horn imaging arrays /." Diss., Pasadena, Calif. : California Institute of Technology, 1988. http://resolver.caltech.edu/CaltechETD:etd-11082007-111802.

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26

Guo, Yong Rutledge David B. Rutledge David B. "Millimeter-wave integrated-circuit horn-antenna imaging arrays /." Diss., Pasadena, Calif. : California Institute of Technology, 1992. http://resolver.caltech.edu/CaltechETD:etd-07242007-092924.

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27

Cao, Jun. "Toward a wave-equation based true-reflection imaging /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2008. http://uclibs.org/PID/11984.

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28

Nordenfur, Tim. "Comparison of Pushing Sequences for Shear Wave Elastography." Thesis, KTH, Skolan för teknik och hälsa (STH), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-124123.

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Shear wave elastography is a medical imaging modality in which tissue elasticity is estimated by measuring the speed of ultrasound-induced shear waves. This study aimed to implement four shear wave generating pushes and compare their performance according to chosen metrics. The focused push, unfocused push, unfocused comb push and line push were implemented on a Verasonics ultrasound system and tested on a polyvinyl alcohol phantom. Shear wave propagation was imaged using angle-compounded ultrafast imaging. Axial particle velocities were estimated using a 2D autocorrelator and then cross-corre

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29

Deruelle, Tristan. "Magnetic Resonance Elastography : towards prostate cancer imaging and slow compression wave imaging in softtissues." Electronic Thesis or Diss., Lyon, 2022. http://www.theses.fr/2022LYSE1068.

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Le cancer de la prostate est le deuxième cancer le plus prévalent chez l’homme dans le monde. Il est suspecté par un test de PSA et/ou un ressenti plutôt dur lors d’un toucher rectal. Lors du dépistage, une IRM multiparamétrique est recommandée pre-biopsie. Malheureusement, l’interprétation des images n’est pas aisée, même pour des spécialistes, et fait apparaître des faux-positifs. L’élastographie est une technique permettant d’estimer la rigidité des tissus lors de l’induction de petites vibrations. Cette technique permettrait d’avoir une cartographie 3D de la dureté de la prostate. Nous pen

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30

Leslie, Jennifer M. "P-wave seismic imaging through dipping transversely isotropic media." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0024/NQ49511.pdf.

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31

Whitmore, Norman Daniel. "An imaging hierarchy for common-angle plane wave seismograms /." Access abstract and link to full text, 1995. http://0-wwwlib.umi.com.library.utulsa.edu/dissertations/fullcit/9605996.

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32

Gregory, I. S. "The development of a continuous-wave terahertz imaging system." Thesis, University of Cambridge, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.599688.

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Scientific progress in the terahertz (0.1-10 THz) region of the electromagnetic spectrum has been impeded by a lack of coherent sources and detectors. Recent developments have seen the emergence of novel optoelectronic devices, which have generated considerable interest. One such approach is the coherent emission and detection of continuous-wave (cw) THz radiation by mixing two cw visible or near-infrared lasers in a semiconductor. The photomixer efficiency is dependent upon the carrier dynamics of the semiconductor material, in addition to the electronic properties of the antenna and electrod

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33

Morgan, Stephen P. "Continuous wave optical techniques for imaging through scattering media." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319966.

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34

Cheng, Qiao. "Compressive sensing for microwave and millimeter-wave array imaging." Thesis, Queen Mary, University of London, 2018. http://qmro.qmul.ac.uk/xmlui/handle/123456789/31704.

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Compressive Sensing (CS) is a recently proposed signal processing technique that has already found many applications in microwave and millimeter-wave imaging. CS theory guarantees that sparse or compressible signals can be recovered from far fewer measure- ments than those were traditionally thought necessary. This property coincides with the goal of personnel surveillance imaging whose priority is to reduce the scanning time as much as possible. Therefore, this thesis investigates the implementation of CS techniques in personnel surveillance imaging systems with different array configurations

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35

Yang, Heng S. M. Massachusetts Institute of Technology. "Ultrasound shear wave elastography imaging with external mechanical vibration." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/113749.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 105-107).<br>Ultrasound shear wave elastography (SWE) imaging is gaining wide acceptance in clinical practice as both a non-invasive and quantitative diagnostic modality. Most commercial SWE systems generate shear waves using acoustic radiation force (ARF), which requires complex hardware and is therefore only available on high-end and premium systems. External mechanical vibration (EMV) is an alternative to indu

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36

Smith, David Michael Patrick. "Aspects of small airborne passive millimetre-wave imaging systems." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/3979.

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Thesis (PhD (Electrical and Electronic Engineering))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: Passive millimetre-wave (PMMW) imaging is a technique that uses radiometers to detect thermal radiation emitted and reflected by metallic and non-metallic objects. While visual and infra-red emissions are attenuated by atmospheric constituents, PMMW emissions are transmitted, resulting in consistent contrast between different objects from day to night in clear weather and in low-visibility conditions to form images for a range of security and inclement weather applications. The use

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37

Turola, Massimo. "Investigation of plenoptic imaging systems : a wave optics approach." Thesis, City University London, 2016. http://openaccess.city.ac.uk/15183/.

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Conventional imaging devices only capture a part of the total information carried by the light. A new generation of imaging devices, plenoptic systems, use an array of micro lenses to codify the light coming from an object into a four dimensional function called the light field. The final image is then obtained after post processing computations on the light field. In this work plenoptic imaging devices are analysed using a wave optics approach. A platform to simulate light propagating under the Fresnel approximation in a generic optical system was developed in MATLAB. An optical system can be

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38

Samluk, Jesse Paul. "Millimeter wave far-field imaging via optical upconversion techniques." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 106 p, 2008. http://proquest.umi.com/pqdweb?did=1597632791&sid=10&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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39

Stein, Edwin Lee Jr. "Design and development of passive millimeter-wave imaging systems." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 123 p, 2009. http://proquest.umi.com/pqdweb?did=1885755721&sid=3&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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40

Jaruwatanadilok, Sermsak. "Optical wave propagation and imaging in descrete random media /." Thesis, Connect to this title online; UW restricted, 2003. http://hdl.handle.net/1773/5839.

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41

Majhi, Subhra. "Ultrasonic Wave based Monitoring and Imaging of Civil Infrastructure." Thesis, Curtin University, 2019. http://hdl.handle.net/20.500.11937/78313.

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Australian infrastructure which is predominantly close to the coast are at risk of corrosion. The prevalent visual monitoring of infrastructure warrant alleviation. Ultrasonic waves rely on interaction of waves with the substrate structure. In reinforced concrete infrastructure, they can travel through embedded rebar or surrounding concrete. Processing these wave have revealed their traits. Representative images coalescing these waves are developed. A synergistic wave based monitoring scheme through rebar and concrete is presented to disseminate corrosion.

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42

Brooker, Graham Michael. "Long-Range Imaging Radar for Autonomous Navigation." Thesis, The University of Sydney, 2005. http://hdl.handle.net/2123/658.

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This thesis describes the theoretical and practical implementation of a long-range high-resolution millimetre wave imaging radar system to aid with the navigation and guidance of both airborne and ground-based autonomous vehicles. To achieve true autonomy, a vehicle must be able to sense its environment, comprehensively, over a broad range of scales. Objects in the immediate vicinity of the vehicle must be classified at high resolution to ensure that the vehicle can traverse the terrain. At slightly longer ranges, individual features such as trees and low branches must be resolved to al

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43

Brooker, Graham Michael. "Long-Range Imaging Radar for Autonomous Navigation." University of Sydney. Aerospace, Mechanical and Mechatronic Engineering, 2005. http://hdl.handle.net/2123/658.

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This thesis describes the theoretical and practical implementation of a long-range high-resolution millimetre wave imaging radar system to aid with the navigation and guidance of both airborne and ground-based autonomous vehicles. To achieve true autonomy, a vehicle must be able to sense its environment, comprehensively, over a broad range of scales. Objects in the immediate vicinity of the vehicle must be classified at high resolution to ensure that the vehicle can traverse the terrain. At slightly longer ranges, individual features such as trees and low branches must be resolved to al

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44

Deng, Kai. "Imaging Resolution of the 410-km and 660-km Discontinuities." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/50424.

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The structure of seismic discontinuities at depths of about 410 km and 660 km provides important constraints on mantle convection as the associated mineral phase transformations in the transition zone are sensitive to thermal perturbations. Teleseismic P-to-S receiver functions have been widely used to map the depths of the two discontinuities. In this study, we investigate the resolution of receiver functions in imaging topographic variations of the 410-km and 660-km discontinuities based on wave propagation simulations using a Spectral Element Method (SEM). We investigate finite-frequency e

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45

Patrick, Mark Adam. "Illumination Strategies to Reduce Target Orientation Requirements and Speckle in Millimeter Wave Imaging." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1397656078.

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46

Vogel, Patrick, Martin Andreas Rückert, Peter Klauer, Walter H. Kullmann, Peter Michael Jakob, and Volker Christian Behr. "Traveling Wave Magnetic Particle Imaging for determining the iron-distribution in rock: Traveling Wave Magnetic Particle Imaging for determining the iron-distribution in rock." Diffusion fundamentals 22 (2014) 12, S.1-5, 2014. https://ul.qucosa.de/id/qucosa%3A13518.

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Determining the composition of solid materials is of high interest in areas such as material research or quality assurance. There are several modalities at disposal with which various parameters of the material can be observed, but of those only magnetic resonance imaging (MRI) or computer tomography (CT) offer anon-destructive determination of material distribution in 3D. A novel non-destructive imaging method is Magnetic Particle Imaging (MPI), which uses dynamic magnetic fields for a direct determination of the distribution of magnetic materials in 3D. With this approach, it is possibl

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47

Papakosta, Paraskevi. "Design and development of mechanical passive millimetre wave imaging scanning systems." Thesis, University of Reading, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325129.

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48

Zeitler, Armin [Verfasser]. "Investigation of mm-wave imaging and radar systems / Armin Zeitler." Ulm : Universität Ulm. Fakultät für Ingenieurwissenschaften und Informatik, 2013. http://d-nb.info/1035757885/34.

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49

Nguyen, Khoa Minh. "Key receiver circuits for digital beamforming in millimeter-wave imaging." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/64587.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 123-129).<br>Millimeter-wave (MMW) frequencies have wavelengths small enough to offer sufficient spatial resolution for certain imaging applications. Advances in silicon processes have developed devices that can operate at these frequencies, which has led to the potential for low cost MMW imaging, provided that the circuit design can meet the performance specifications for these applications. In t

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50

Tufekci, Sinan. "Combined Surface-Wave and Resistivity Imaging for Shallow Subsurface Characterization." Ohio University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1250891786.

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