Дисертації з теми "Scattering Remote sensing systems"
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Chen, Zhengxiao. "Microwave remote sensing of vegetation : Stochastic Lindenmayer systems, collective scattering effects, and neural network inversions /." Thesis, Connect to this title online; UW restricted, 1994. http://hdl.handle.net/1773/5854.
Повний текст джерелаRocadenbosch, Burillo Francesc. "Lidar sensing of the atmosphere: receiver design and inversion algorithms for an elastic system." Doctoral thesis, Universitat Politècnica de Catalunya, 1996. http://hdl.handle.net/10803/6909.
Повний текст джерелаLIDAR is an acronym of LIght Detection And Ranging. In the present case, the elastic lidar techniques are used to remotely sense the atmosphere and to derive quantitative information about its optical parameters.This thesis comprises the design and operation of an elastic lidar station based on a pulsed Nd:YAG laser operating at the 1064- and 532-nm wavelengths, in the parts concerning receiver, control systems, and inversion algorithms.Basically, it can be divided in three different parts: The first one (Chaps. 1, 2, and 3) encompasses the study of the elastic scattering (Rayleigh and Mie) in the atmosphere for link-budget purposes and gives some insight into the interweaving between physical variables such as temperature, pressure and humidity, and the scattering phenomena, letting apart any possible extrapolation to meteorological models. From this basis, extinction and backscatter figures for different atmospheric conditions can readily be assessed and, as result, a system link budget is presented. This includes lidar range study, signal-to-noise ratio assessment, and photodiode evaluation from custom-made libraries. At the end of the first part, the system specification is made. The second part of this work (Chaps. 4, 5, and 6) is concerned with the design and implemen-tation of receiver, synchronization, and control systems. The optoelectronic receiver is based on current-feedback amplifiers and features a very large gain-bandwidth product. As for the synchronization subsystem, two different units are presented with a view to a future scanning lidar system, which makes room for interspersed scans. Eventually, the control system designed is LabView based and features a distributed control philosophy. For that purpose, lidar bus protocols and signals are specified and built for the actual lidar station. Finally, the third part encircles the design of inversion algorithms with and without memory (Chaps. 7 and 8). Non-memory algorithms for homogeneous atmospheres are based on regression curve-fitting procedures, such as the slope-method and the least squares while in instances of inhomogeneous atmospheres they are based on Klett's method and appropriate calibrations. Memory algorithms are based on different stochastic models for the atmosphere and on non-linear Kalman filtering. In addition to these inversion procedures, error assessment plots are also derived and discussed. Chap. 9 describes the measurements carried out with the system this work has contributed to build and the results of applying to them the inversion algorithms discussed in the preceding chapters.The inversion of live-scenes involves pollution structure studies, cloud studies (ceilometry, cloud motion and wave clouds, basically), and hints overlap factor error sources.
Penner, Justin Frank. "Development of a Grond-Based High-Resolution 3D-SAR System for Studying the Microwave Scattering Characteristics of Trees." BYU ScholarsArchive, 2011. https://scholarsarchive.byu.edu/etd/2889.
Повний текст джерелаBismarck, Jonas von [Verfasser]. "Vibrational Raman Scattering of Liquid Water : Quantitative Incorporation into a Numeric Radiative Transfer Model of the Atmosphere-Ocean System and Analysis of its Impact on Remote Sensing Applications / Jonas von Bismarck." Berlin : Freie Universität Berlin, 2016. http://d-nb.info/1098185447/34.
Повний текст джерелаO'Bree, Terry Adam, and s9907681@student rmit edu au. "Investigations of light scattering by Australian natural waters for remote sensing applications." RMIT University. Applied Sciences, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080110.140055.
Повний текст джерелаAo, Chi On 1970. "Electromagnetic wave scattering by discrete random media with remote sensing applications." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/16782.
Повний текст джерелаIncludes bibliographical references (p. 171-182).
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
The scattering of electromagnetic waves in medium with randomly distributed discrete scatterers is studied. Analytical and numerical solutions to several problems with implications for the active and passive remote sensing of the Earth environment are obtained. The quasi-magnetostatic (QMS) solution for a conducting and permeable spheroid under arbitrary excitation is presented. The spheroid is surrounded by a weakly conducting background medium. The magnetic field inside the spheroid satisfies the vector wave equation, while the magnetic field outside can be expressed as the gradient of the Laplace solution. We solve this problem exactly using the separation of variables method in spheroidal coordinates by expanding the internal field in terms of vector spheroidal wavefunctions. The exact formulation works well for low to moderate frequencies; however, the solution breaks down at high frequency due to numerical difficulty in computing the spheroidal wavefunctions. To circumvent this difficulty, an approximate theory known as the small penetration-depth approximation (SPA) is developed. The SPA relates the internal field in terms of the external field by making use of the fact that at high frequency, the external field can only penetrate slightly into a thin skin layer below the surface of the spheroid. For spheroids with general permeability, the SPA works well at high frequency and complements the exact formulation. However, for high permeability, the SPA is found to give accurate broadband results. By neglecting mutual interactions, the QMS frequency response from a collection of conducting and permeable spheroids is also studied.
(cont.) In a dense medium, the failure to properly take into account of multiple scattering effects could lead to significant errors. This has been demonstrated in the past from extensive theoretical, numerical, and experimental studies of electromagnetic wave scattering by densely packed dielectric spheres. Here, electromagnetic wave scattering by dense packed dielectric spheroids is studied both numerically through Monte Carlo simulations and analytically through the quasi-crystalline approximation (QCA) and QCA with coherent potential (QCA-CP). We assume that the spheroids are electrically small so that single-particle scattering is simple. In the numerical simulations, the Metropolis shuffling method is used to generate realizations of configurations for non-interpenetrable spheroids. The multiple scattering problem is formulated with the volume integral equation and solved using the method of moments with electrostatic basis functions. General expressions for the self-interaction elements are obtained using the low-frequency expansion of the dyadic Green's function, and radiative correction terms are included. Results of scattering coefficient, absorption coefficient, and scattering matrix for spheroids in random and aligned orientation configurations are presented. It is shown that independent scattering approximation can give grossly incorrect results when the fractional volume of the spheroids is appreciable.
(cont.) In the analytical approach, only spheroids in the aligned configuration are solved. Low-frequency QCA and QCA-CP solutions are obtained for the average Green's function and the effective permittivity tensor. For QCA-CP, the low-frequency expansion of the uniaxial dyadic Green's function is required. The real parts of the effective permittivities from QCA and QCA-CP are compared with the Maxwell-Garnett mixing formula. ...
by Chi On Ao.
Ph.D.
Oh, Han, and Hariharan G. Lalgudi. "Scalable Perceptual Image Coding for Remote Sensing Systems." International Foundation for Telemetering, 2008. http://hdl.handle.net/10150/606208.
Повний текст джерелаIn this work, a scalable perceptual JPEG2000 encoder that exploits properties of the human visual system (HVS) is presented. The algorithm modifies the final three stages of a conventional JPEG2000 encoder. In the first stage, the quantization step size for each subband is chosen to be the inverse of the contrast sensitivity function (CSF). In bit-plane coding, two masking effects are considered during distortion calculation. In the final bitstream formation step, quality layers are formed corresponding to desired perceptual distortion thresholds. This modified encoder exhibits superior visual performance for remote sensing images compared to conventional JPEG2000 encoders. Additionally, it is completely JPEG2000 Part-1 compliant, and therefore can be decoded by any JPEG2000 decoder.
Wanderley, Juliana Fernandes Camapum. "Colour-based recognition for remote sensing in environmental systems." Thesis, Coventry University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266844.
Повний текст джерелаMoreira, Gregori de Arruda. "Analyses of planetary boundary layer from remote sensing systems." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/85/85134/tde-15052018-122950/.
Повний текст джерелаA Camada Limite Planetária (PBL - Planetary Boundary Layer) é uma parte relevante da atmosfera com uma extensão variável e que claramente desempenha um papel importante em áreas de estudo, como: a qualidade do ar ou a previsão do tempo. Sistemas de sensoriamento remoto passivo e ativo têm sido amplamente utilizado para analisar as características da PBL. A combinação de diferentes técnicas de sensoriamento remoto permite obter uma imagem completa da dinâmica desta camada. Neste estudo, analisamos o comportamento da PBL utilizando quatro tipos de sistemas de sensoriamento remoto: Radiômetro de Micro-ondas (MWR), Lidar Elástico (EL), Lidar Doppler (DL) e Ceilômetro. As medições foram realizadas em duas cidades, Granada (Espanha) e São Paulo (Brasil). Primeiramente, em Granada, a altura da PBL (PBLH) obtida a partir dos dados do MWR foi validada pela PBLH gerada pela análise dos dados de radiossondas, mostrando uma boa concordância. Em um segundo estágio, sistemas ativos de sensoriamento remoto foram usados para a obtenção da PBLH. Assim, o método do filtro de Kalman foi aplicado aos dados do EL enquanto o método da variância da velocidade vertical do vento foi aplicado aos dados do DL. As PBLH derivadas dessas abordagens foram comparadas com o PBLH fornecida pelo MWR, sendo que os resultados mostram uma boa concordância na maioria dos casos, embora algumas discrepâncias apareçam nas situações de mudanças intensas da PBL (crescimento e/ou diminuição). Em seguida, é realizada a análise dos dados das medidas coletadas com um ceilômetro e um radiômetro de micro-ondas durante quatro e cinco anos, respectivamente, em Granada. As metodologias aplicadas para a detecção da PBLH (método de gradiente para o ceilômetro e a combinação do método de parcela e do método de gradiente de temperatura para o radiômetro de micro-ondas) forneceram uma descrição satisfatória da estrutura da PBL em casos simples. Além disso, o comportamento da PBL foi caracterizado por um estudo estatístico das PBLH convectiva e estável, as quais foram obtidas a partir das medidas do radiômetro de micro-ondas. A análise do estudo estatístico realizado para a PBLH mostra algumas coincidências com outros estudos já realizados para a mesma variável, como o padrão diário e os ciclos anuais. Mas também há algumas diferenças, as quais são causadas por latitudes, topografia e clima distintos. Foi realizada também uma análise combinada de longo prazo da Camada Residual (gerada pelos dados do Ceilômetro) e da Camada Estável e Convectiva (obtida pelos dados do radiômetro de micro-ondas), oferecendo assim um quadro completo da evolução da PBL por combinação sinérgica de técnicas de sensoriamento remoto. Essa é a razão pela qual sistemas com alta resolução temporal e espacial, como os lidars, têm sido cada vez mais aplicados em estudos sobre essa região atmosférica. Neste trabalho, também foi realizada, em São Paulo, uma análise do sinal retroespalhado em três comprimentos de onda (355, 532 e 1064 nm), o qual provê informações da turbulência através da análise dos momentos de alta ordem (variância, assimetria e curtose). O comprimento de onda de 355 nm apresenta pouca aplicabilidade na metodologia proposta, devido à sua baixa intensidade (por conta da predominância do retroespalhamento molecular) e grande presença de ruído, enquanto o comprimento de onda de 532 nm apresentou resultados semelhantes aos fornecidos pelo comprimento de onda de 1064 nm, o qual foi usado como referência. Em seguida, foram analisados dois estudos de caso utilizando os comprimentos de onda de 532 e 1064 nm (em separado). Essa abordagem forneceu informações sobre a altura da PBL (derivada pelo método de variância (Menut et al., 1999), deslocamento de camadas de aerossol (assimetria) e nível de mistura em várias alturas (curtose), mostrando a viabilidade da metodologia proposta, quando os comprimentos de onda de 532 e 1064 nm são usados para a descrição da PBL a partir dos momentos de alta ordem. Além disso, demonstrou-se, com dados de DL, EL e MWR obtidos em Granada, como algumas variáveis (temperatura do ar, concentração de aerossóis, vento vertical, umidade relativa e radiação líquida) podem influenciar a dinâmica da PBL. Os momentos de alta ordem das distribuições de velocidade vertical derivadas dos dados do DL e o sinal retroespalhado obtido a partir do EL foram corrigidos por duas metodologias (first lag e correção de -2/3). Os perfis corrigidos apresentam pequenas diferenças quando comparados com os perfis não corrigidos, mostrando baixa influência do ruído e a viabilidade da metodologia proposta. Foi realizada uma análise detalhada de dois estudos de casos, o primeiro correspondendo a uma PBL bem definida, enquanto o segundo corresponde a uma situação com a presença de uma camada de nuvens e poeira saariana. Em ambos os casos, os resultados fornecidos pelos diferentes instrumentos acabaram se complementando, de modo que o uso sinérgico dos diferentes sistemas nos permitiu um monitoramento detalhado da PBL.
Thompson, James. "Identifying Subsurface Tile Drainage Systems Utilizing Remote Sensing Techniques." University of Toledo / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1290141705.
Повний текст джерелаDambe, Natalia. "Riverine flooding using GIS and remote sensing." Master's thesis, Faculty of Engineering and the Built Environment, 2020. https://hdl.handle.net/11427/31738.
Повний текст джерелаDandini, Paolo. "Cirrus occurrence and properties determined from ground-based remote sensing." Thesis, University of Hertfordshire, 2017. http://hdl.handle.net/2299/17860.
Повний текст джерелаDemir, Metin Aytekin. "Perturbation theory of electromagnetic scattering from layered media with rough interfaces." The Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=osu1174660001.
Повний текст джерелаBhang, Kon Joon. "Remote Sensing Approach for Hydrologic Assessments of Complex Lake Systems." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1212787335.
Повний текст джерелаDemir, Metin A. "Perturbation theory of electromagnetic scattering from layered media with rough interfaces." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1174660001.
Повний текст джерелаLi, Wen-Hao. "Significance of multiple scattering in remotely sensed images of natural surfaces /." Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/6743.
Повний текст джерелаAggarwal, Vikas. "Remote sensing and imaging in a reconfigurable computing environment." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0012171.
Повний текст джерелаAlmond, Simon John. "Remote sensing within GIS for woodland inventory and monitoring." Thesis, University of Portsmouth, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386832.
Повний текст джерелаWestin, Benjamin Alexander. "Applications in Remote Sensing Using the Method of Ordered Multiple Interactions." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/19346.
Повний текст джерелаequations describing surface scattering which is both computationally efficient and reliably
convergent. The method has been applied in a variety of ways to solving the electromagnetic
scattering from perfectly-conducting rough surfaces. A desire to more accurately predict
the scattering from natural terrain has led to the representation of the surface material as
penetrable instead of conductive.
For this purpose, the Method of Ordered Multiple Interactions is applied to numerically
solve the electromagnetic scattering from randomly-rough dielectric surfaces. A primary
consequence of the penetrable surface material is the introduction of a pair of coupled integral equations in place of the single integral equation used to solve the problem with a perfectly conducting surface. The method is tested and analyzed by developing independent scattering solutions for canonical cases in a transform domain and by comparing results with solutions from other techniques.
The dielectric implementation of the Method of Ordered Multiple Interactions is used to solve
the electromagnetic scattering from a class of randomly-rough dielectric surfaces. This allows
for the characterization of the effect of a number of transmitter and surface parameters in the
scattering problem, observing bistatically and also specifically in the backscatter direction.
MOMI is then applied as a method to examine subsurface penetration characteristics from
a similar family of rough surfaces. Characteristics of the environment parameters and the
scattered field itself are examined, and the numerical challenges associated with observing
beneath the surface are identified and addressed.
The Method of Ordered Multiple Interactions is then incorporated as a major component of
a larger solution which computes the total scattering when a dielectric object is buried just
beneath the rough surface. This hyrid approach uses MOMI and the Method of Moments to
iteratively account for multiple interactions between the target and the dielectric interface,
enabling the study of scattering from the combined environment of a rough surface and the
embedded object, as well as the individual scattering events which combine to form the
steady-state solution.
Ph. D.
Wallerman, Jörgen. "Remote sensing aided spatial prediction of forest stem volume /." Umeå : Dept. of Forest Resource Management and Geomatics, 2003. http://epsilon.slu.se/s271.pdf.
Повний текст джерелаSarton, Christopher J. "Autopilot using differential thrust for ARIES autonomous underwater vehicle." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Jun%5FSarton.pdf.
Повний текст джерелаStephen, Haroon. "Microwave Remote Sensing of Saharan Ergs and Amazon Vegetation." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1461.pdf.
Повний текст джерелаRatilal, Purnima 1971. "Remote sensing of submerged objects and geomorphology in continental shelf waters with acoustic waveguide scattering." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/91377.
Повний текст джерелаIncludes bibliographical references (p. 347-354).
The long range imaging of submerged objects, seafloor and sub-seafloor geomorphology in continental shelf waters using an active sonar system is explored experimentally and theoretically. A unified model for 3-D object scattering and reverberation that takes into account the coupling between propagation and scattering in a stratified medium is developed from wave theory. The conditions necessary for scattering in a waveguide to become diffuse is derived directly from Green's Theorem. Simulations with the unified model indicate that the detection of submerged target echoes above diffuse seafloor reverberation is highly dependent upon waveguide properties, bandwidth, array aperture, measurement geometry, and the scattering properties of the target. Analysis with the unified model shows that it is theoretically plausible for coherent returns from the scattering of evanescent waves by extended but discrete sub-bottom geologic features to stand significantly above diffuse or incoherent returns arising from small-scale roughness of the waveguide boundaries. A long-range bistatic sonar system was deployed in a field experiment and used to image extensive networks of buried river channels and inclined sub-seafloor strata over tens of kilometers in nearreal time. Such a capability is of great advantage in geophysical applications. Since buried river channels are expected to be ubiquitous in continental shelf environments, sub-seafloor geomorphology will play a major role in producing "false alarms" or cluster in long-range sonar systems that search for submerged objects such as underwater vehicles.
(cont.) A generalized extinction theorem for object scattering in a stratified medium is derived that can be applied to detect and classify objects from the total field in the forward scatter direction in a waveguide. Analytic expressions are derived for the attenuation and dispersion in the forward propagated field due to scattering from random surface and volume inhomogeneities in a waveguide. The unified model is applied to show that the active sonar equation is not in general valid for scattering in a waveguide. It is shown that the sonar equation may be made approximately valid in a waveguide by lowering the active frequency of operation sufficiently for the given measurement scenario to simplify analysis for target classification and localization.
by Purnima Ratilal.
Ph.D.
Dobbs, Brian M. "The incorporation of atmospheric variability into DIRSIG /." Online version of thesis, 2006. https://ritdml.rit.edu/dspace/handle/1850/3014.
Повний текст джерелаFrey, Elizabeth G. "An examination of distributional assumptions in LANDSAT TM imagery /." Online version of thesis, 1995. http://hdl.handle.net/1850/12253.
Повний текст джерелаCharlebois, Daniel. "A planning system based on plan re-use and its application to geographical information systems and remote sensing." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/nq20994.pdf.
Повний текст джерелаZhang, Zhibo. "Computation of the scattering properties of nonspherical ice crystals." Texas A&M University, 2004. http://hdl.handle.net/1969.1/1267.
Повний текст джерелаHong, Kan. "Remote sensing of strong emotions using electro-optical imaging technique." Thesis, Cranfield University, 2012. http://dspace.lib.cranfield.ac.uk/handle/1826/8035.
Повний текст джерелаLicenciado, Jose Luis Alvarex-Perez. "Two novel studies of electromagnetic scattering in random media in the context of radar remote sensing." Thesis, University of Nottingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368345.
Повний текст джерелаÁlvarez-Pérez, José Luis. "Two novel studies of electromagnetic scattering in random media in the context of radar remote sensing /." Köln : DLR, Bibliotheks- und Informationswesen, 2003. http://www.gbv.de/dms/bs/toc/377331473.pdf.
Повний текст джерелаTiemann, Christopher O. "Acoustic scattering and remote sensing in the Strait of Gibraltar : the role of internal solitary waves /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2000. http://wwwlib.umi.com/cr/ucsd/fullcit?p3035909.
Повний текст джерелаStjernman, Anders. "Design and development of a microwave multifrequency polarimetric scatterometer for biosphere remote sensing." Doctoral thesis, Umeå universitet, Rymdfysik, 1995. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-100377.
Повний текст джерелаDiss. Umeå : Umeå universitet, 1995
digitalisering@umu
Kramer, Tyler Christian. "The Polarimetric Impulse Response and Convolutional Model for the Remote Sensing of Layered Vegetation." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/41732.
Повний текст джерелаMaster of Science
Makkeasorn, Ammarin. "MULTISENSOR FUSION REMOTE SENSING TECHNOLOGY FOR ASSESSING MULTITEMPORAL RESPONSES IN ECOHYDROLOGICAL SYSTEMS." Doctoral diss., University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4068.
Повний текст джерелаPh.D.
Department of Civil and Environmental Engineering
Engineering and Computer Science
Environmental Engineering PhD
Meißner, Henry. "Determination and Improvement of Spatial Resolution obtained by Optical Remote Sensing Systems." Doctoral thesis, Humboldt-Universität zu Berlin, 2021. http://dx.doi.org/10.18452/22348.
Повний текст джерелаAlthough acquisition of resolving power and effective spatial resolution is a well-studied field of research, there are still several scientific questions to be answered when it comes to a standardized determination. Therefore, this thesis provides a description of a framework for the imaging process of remote sensing sensors mathematically and methodologically including imaging components and subsequent processes. Furthermore, a detailed review for different structures and methods to measure spatial resolution is included. Aforementioned framework then is utilized to identify related issues to a standardized process obtaining spatial resolution parameters as an image quality criterion to support an upcoming standard DIN 18740-8. With respect to define the norm-procedure every measurement influence is quantified where possible and in other cases arrangements are specified to diminish their influence. Moreover, the development of an associated software measurement tool has been accomplished as part of this thesis, which also supports the norm for aerial image quality, spatial resolution in particular. As part of a further objective of this thesis, a super-resolution approach to improve spatial resolution of aerial images has been developed and evaluated. The related software tool is able to combine different super-resolution techniques and includes known image quality parameter in subsequent calculations. The novel super-resolution approach improves spatial resolution of aerial imagery and true ortho-mosaics by taking a set of multiple low-resolved raw images (color filter array), their optimized exterior and interior orientation parameters and the derived 3D-surface as input. Then, one or more super-resolved images are calculated as a hybrid of classic super-resolution method and demosaicing while considering photogrammetric back-projections onto the 3D-surface. Thereby, limitations of image co-registration with commonly used optical flow approaches can be neglected.
Smith, H. Todd. "A systems engineering approach to designing a remote sensing satellite simulation system." Master's thesis, This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-02162010-020240/.
Повний текст джерелаChen, Ming. "Characterization of Pedestrian Electromagnetic Scattering at 76-77GHz." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1385579499.
Повний текст джерелаAlmutairi, Abdullah. "An investigation of the role of image properties in influencing the accuracy of remote sensing change detection analysis." Morgantown, W. Va. : [West Virginia University Libraries], 2004. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3596.
Повний текст джерелаTitle from document title page. Document formatted into pages; contains xiii, 129 p. : ill. (some col.), maps (some col.). Includes abstract. Includes bibliographical references (p. 86-95).
Jones, Phillip J. "Cooperative area surveillance strategies using multiple unmanned systems." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28134.
Повний текст джерелаCommittee Chair: Dr. George Vachtsevanos; Committee Member: Ayanna Howard; Committee Member: Dr. Thomas Michaels; Committee Member: Eric Johnson; Committee Member: Linda Wills.
Alrowaijeh, Jamal Salem. "Fluidic Energy Harvesting and Sensing Systems." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/96241.
Повний текст джерелаPHD
Shih, Shih-En 1964. "Direct and inverse scattering models for electromagnetic remote sensing of time-varying sea ice and snow cover." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/17461.
Повний текст джерелаVita.
Includes bibliographical references (p. 175-184).
by Shih-En Shih.
Ph.D.
Zurk, Lisa M. "Electromagnetic wave propagation and scattering in dense, discrete random media with application to remote sensing of snow /." Thesis, Connect to this title online; UW restricted, 1995. http://hdl.handle.net/1773/5981.
Повний текст джерелаHuang, Junyi. "Investigation on landslide susceptibility using remote sensing and GIS methods." HKBU Institutional Repository, 2014. https://repository.hkbu.edu.hk/etd_oa/33.
Повний текст джерелаDucey, Craig David. "Hierarchical Image Analysis and Characterization of Scaling Effects in Remote Sensing." PDXScholar, 2010. https://pdxscholar.library.pdx.edu/open_access_etds/399.
Повний текст джерелаBall, Jessica Lynne. "Field and numerical investigations of lava dome hydrothermal systems and their effects on dome stability." Thesis, State University of New York at Buffalo, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3612916.
Повний текст джерелаThis study investigates the potential for hydrothermal alteration and circulation in lava domes using combined analytical, remote sensing and numerical modeling approaches. This has been accomplished in three parts: 1) A comprehensive field, geochemical and remote sensing investigation was undertaken of the hydrothermal system in the Santiaguito lava dome complex in Guatemala. The Santiaguito domes were found to contain mainly hydrous silica alteration, which is unlikely to weaken dome rock, but the summit of Santa Maria was found to contain pervasive argillic alteration (clay minerals), which do pose more of a collapse-related hazard. These results were confirmed by hot spring geochemistry which indicated that water in the domes was responsible for some rock dissolution but had a residence time too short to allow for secondary mineralization. 2) A finite element numerical modeling approach was developed which was designed to simulate the percolation of meteoric water in two dome geometries (crater-confined and 'perched'), and the results were compared to the surface expression of hydrothermal systems on existing lava domes. In both cases, we concluded that simulated domes which lacked a high-temperature (magmatic) heat source could not develop a convecting hydrothermal system and were dominated by gravitational water flow. In these low-temperature simulations, warm springs (warmer high fluid fluxes) were produced at the base of the dome talus and cool springs were dispersed lower down the slope/substrate; fumaroles (high vapor fluxes) were confined to the dome summits. Comparison with existing dome cross sections indicates that the simulations were accurate in predicting fumarole locations and somewhat accurate at predicting spring locations, suggesting that springs may be subject to permeability contrasts created by more complicated structural features than were simulated in this study. 3) The results of the numerical modeling were used to calculate alteration potential in the simulated domes, indicating the most likely areas where alteration processes might either reduce the strength of a dome or reduce permeability that could contribute to internal pressurization. Rock alteration potential in low-temperature lava domes was found to be controlled by material permeability and the presence or absence of a sustained heat source driving hydrothermal circulation. High RAI values were preserved longer in low-permeability domes, but were more strongly developed in domes with higher permeabilities. Potential for mineral dissolution was highest at the base of the dome core, while the potential for mineral precipitation is highest at the dome core-talus interface. If precipitated minerals are impermeable, the dome core/talus interface would be a likely location for accumulation of gases and initiation of gas-pressurization-related collapse; if alteration is depositing weak (i.e. clay) minerals in this area, the dome core/talus interface might be a candidate for collapses occurring as the result of alteration processes.
The results of this study are all geared toward answering two broad questions: Where are hydrothermal alteration processes likely to occur or be focused within lava domes? and What effect could these processes have on dome stability? In the specific case of the Santiaguito dome complex, the combination of a quickly-recharged, low-temperature hydrothermal system in the inactive domes actually indicated a low possibility of collapse related to alteration minerals. This result was reinforced by the results of the numerical modeling, which indicated that domes are unlikely to develop sustained hydrothermal convection without the presence of a significant (magmatic) heat source and—in the case of Santiaguito—are likely to produce more hydrous silica alteration minerals when they also lack a source of acidic gases. Models of alteration potential do detail, however, that both shallow and deep dome collapses are still a possibility with a low-temperature hydrothermal system, given either a) a source of acidic gases to drive the formation of clay minerals (which are most likely to be deposited at the core/talus interface of a dome, or b) enough deposition of silica minerals in pore spaces to lower permeability in dome rock and promote internal gas pressurization. The results of this study are not limited to lava domes, as the volcanic edifices on which they rest are composed of the same materials that comprise lava domes and are therefore susceptible to the same hydrothermal processes. Further simulations of both lava domes and their associated edifices, including mineral species models, could help constrain under what conditions a lava dome or volcano is likely to develop areas of weak mineral precipitates (such as clay minerals) which could provide sites for collapse, or develop an impermeable cap of silicate minerals which could trap rising vapor and contribute to the pressurization of the edifice in question (which can in turn lead to collapse).
Bryant, Roderick C. "Optimal systems for echo-location /." Title page, abstract and table of contents only, 1985. http://web4.library.adelaide.edu.au/theses/09PH/09phb915.pdf.
Повний текст джерелаAl-Rousan, Naief Mahmoud. "System calibration, geometric accuracy testing and validation of DEM and orthoimage data extracted from spot stereo-pairs using commercially available image processing systems." Thesis, University of Glasgow, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264262.
Повний текст джерелаPrasert, Sunyaruk. "Multi angle imaging with spectral remote sensing for scene classification." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Mar%5FPrasert.pdf.
Повний текст джерелаThesis Advisor(s): Richard C. Olsen. Includes bibliographical references (p. 95-97). Also available online.
Tyoda, Zipho. "Landslide susceptibility mapping : remote sensing and GIS approach." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/79856.
Повний текст джерелаLandslide susceptibility maps are important for development planning and disaster management. The current synthesis of landslide susceptibility maps largely applies GIS and remote sensing techniques. One of the most critical stages on landslide susceptibility mapping is the selection of landslide causative factors and weighting of the selected causative factors, in accordance to their influence to slope instability. GIS is ideal when deriving static factors i.e. slope and aspect and most importantly in the synthesis of landslide susceptibility maps. The integration of landslide causative thematic maps requires the selection of the weighting method; in order to weight the causative thematic maps in accordance to their influence to slope instability. Landslide susceptibility mapping is based on the assumption that future landslides will occur under similar circumstances as historic landslides. The weight of evidence method is ideal for landslide susceptibility mapping, as it calculates the weights of the causative thematic maps using known landslides points. This method was applied in an area within the Western Cape province of South Africa, the area is known to be highly susceptible to landslide occurrences. A prediction rate of 80.37% was achieved. The map combination approach was also applied and achieved a prediction rate of 50.98%. Satellite remote sensing techniques can be used to derive the thematic information needed to synthesize landslide susceptibility maps and to monitor the variable parameters influencing landslide susceptibility. Satellite remote sensing techniques can contribute to landslide investigation at three distinct phases namely: (1) detection and classification of landslides (2) monitoring landslide movement and identification of conditions leading up to an event (3) analysis and prediction of slope failures. Various sources of remote sensing data can contribute to these phases. Although the detection and classification of landslides through the remote sensing techniques is important to define landslide controlling parameters, the ideal is to use remote sensing data for monitoring of areas susceptible to landslide occurrence in an effort to provide an early warning. In this regard, optical remote sensing data was used successfully to monitor the variable conditions (vegetation health and productivity) that make an area susceptible to landslide occurrence.
Sahar, Liora. "Using remote-sensing and gis technology for automated building extraction." Diss., Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/37231.
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