Monopulse radarsare one of the most accurate tracking radars used to guide various platforms. Detection and tracking of surface targets with these radars are performed in order to point strike targets. Sea clutter presents challenges for detecting floated targets and in addition to affecting detection height, it can cause errors in monopulse angle finding. In this paper, the airborne monopulse ...

The application of terahertz time-domain spectroscopy (THz-TDS) and imaging to differentiate flat and curved surfaces in reflection via the THz Gouy phase shift is demonstrated. For a THz-TDS system that is aligned for reflection from a flat surface, the presence of a curved surface displaces the image focal plane from the detector plane, resulting in a Gouy phase shift. The potential of utiliz...

In this work we develop the basic idea that the mechanical properties of a curved Gibbsian dividing surface are characterized, not only by the surface tension, but also by surface moments. It is shown that an additional surface bending moment term is to be introduced in the interfacial balance of the force moments at a spherical dividing surface. The existence of surface bending moment leads to...

Shape-from-Texture is the problem of estimating an object’s shape by examining the apparent distortions in the surface texture of the object due to image capture. A new method is described for estimating the tilt angle of local surface patches, based on an analysis of the spectral inertia. The effectiveness of the method is demonstrated on synthetic images generated using the Brodatz textures, ...

Title of dissertation: LENGTH SPECTRAL RIGIDITY OF NON-POSITIVELY CURVED SURFACES Jeffrey Frazier, Doctor of Philosophy, 2012 Dissertation directed by: Professor William Goldman Department of Mathematics Length spectral rigidity is the question of under what circumstances the geometry of a surface can be determined, up to isotopy, by knowing only the lengths of its closed geodesics. It is known...

This work focuses on creating a framework for objectively evaluating the performance of range image segmen-tation algorithms. The algorithms are evaluated in terms of correct segmentation, over-and under-segmentation, missed and noise regions. A set of images with ground truth was created for this work. The images were captured using a structured light scanner. Images used in the evaluation con...

In an effort to begin to understand the mechanics of various forms of biologically packaged DNA, we develop the Euler-Lagrange equations for the equilibrium path of an elastic line constrained to a surface but otherwise relaxed. We find, in contrast to a statement by Hilbert and Cohn-Vossen [1], that whether or not the solutions are geodesic curves of the surface depends on the boundary conditi...