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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
51

A ground clutter processor for the Royal Observatory's 10-cm meteorological radar

李忠琛, Li, Chung-sum, Peter. January 1983 (has links)
published_or_final_version / Electrical Engineering / Doctoral / Doctor of Philosophy
52

Preliminary assessment of the use of radiometer and radar measurements in atmospheric probing

Bolduc, Gilles. January 1980 (has links)
No description available.
53

Small scale radar structure of Alberta hailstorms.

Chisholm, Alexander James January 1966 (has links)
A radar study of two Alberta hailstorms has revealed the existence of small cellular radar echoes with durations of 10-30 minutes. These cells were found to group together to form storm families which existed for several hours. New cells invariably formed on the southern end of the storm family and migrated northward through the storm to dissipate on the northern boundary. [...]
54

Forecasting the onset of snow with weather radar

Mattheou, Nikolaos Haralabos. January 1978 (has links)
No description available.
55

Cloudy condition assessment within an AIRS pixel by combining MODIS and ARM ground-based lidar and radar measurements

Adhikari, Loknath. January 2007 (has links)
Thesis (M.S.)--University of Wyoming, 2007. / Title from PDF title page (viewed on Feb. 6, 2009). Includes bibliographical references (p. 60-65).
56

Synthetic-aperture radar imaging of the ocean surface : theoretical considerations, and experiments with simulated and actual SAR imagery

Vachon, Paris W. January 1987 (has links)
Three key areas of controversy in synthetic-aperture radar (SAR) imaging of ocean surface waves are considered: first, the nature of Bragg scattering; second, the role, magnitude, and calculation of the scene coherence time; and third, the relevant ocean wave velocities for coherent Doppler modulations. This work begins with a re-derivation and extension of existing SAR imaging theory for point and diffuse targets. Generic, relatively simple, closed-form expressions for the impulse response, the resolution, and the image bandwidth summarize this unified treatment. Theoretical differences between the imagery of point and diffuse targets are pointed out. Based upon these fundamental differences, a statistical testing procedure is formulated to address the question of scene target density. Background ocean surface wave theory is outlined in preparation for discussions of SAR ocean imaging. Of central importance is the role of the phase velocity, which is the speed of translation of the mean pattern of reflectivity, and the orbital motion, which leads to coherent (phase) modulation, and hence to velocity bunching, acceleration defocus, and target decorrelation. Based upon this theoretical background, one- and two-dimensional simulation models are developed. The one-dimensional simulation addresses the effects of various parameters upon the mean image contrast in a velocity bunching model and guides the development of the two-dimensional simulation. The two-dimensional simulation is unique because each target which constitutes the scene is explicitly considered. This leads to a degree of control and flexibility which is not available from actual SAR imagery. Qualitative and quantitative comparisons are drawn between the simulated and actual SAR imagery to address the key areas of controversy. The assertion that Bragg scattering is a coherent process is defended, despite inability to conclusively verify this using SEASAT data. Comparisons between simulation and C-SAR imagery of waves propagating into ice verify the roles of the scene coherence time and the wave phase velocity. / Science, Faculty of / Earth, Ocean and Atmospheric Sciences, Department of / Graduate
57

Sizes and intensities of mesoscale precipitation areas as depicted by digital radar data.

Freeman, Larry Eugene January 1976 (has links)
Thesis. 1976. M.S.--Massachusetts Institute of Technology. Dept. of Meteorology. / Microfiche copy available in Archives and Science. / Bibliography: leaf 86. / M.S.
58

Statistics of gradients of precipitation intensity derived from digitized radar data

Riley, Gerald Francis January 1976 (has links)
Thesis. 1976. M.S.--Massachusetts Institute of Technology. Dept. of Meteorology. / Microfiche copy available in Archives and Science. / Bibliography: leaf 76. / by Gerald Francis Riley, Jr. / M.S.
59

Electromagnetic scattering from non-spherical hydrometeors with applications in radar meteorology /

Bringi, Viswanathan Naganathan January 1976 (has links)
No description available.
60

Small scale radar structure of Alberta hailstorms.

Chisholm, Alexander James January 1966 (has links)
No description available.

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