Radar target classification based on range profiles and isar images

Evaluation of tsunami scenarios for western Peloponnese, Greece Yalçıner, Ahmet Cevdet; Dilmen, D. I.; Aytore, B.; Ayca, A.; Insel, I.; Zaytsev, A. (2014-06-01) Tsunami hazard assessment of the eastern part of the Mediterranean Sea is the current interest of the countries having, a coastline in this region. Considering today's increasing population on the coasts and historical tsunamis, it is essential to estimate the probable tsunami risk, which might occur, to be able to mitigate the risk before the actual tsunami event happens. For this purpose, European Union funded project., SEAHELLARC is formed to develop a methodology and tools for seismic and tsunami safety...
GPU-Accelerated Shooting and Bouncing Ray Method for Inverse Synthetic Aperture Radar Imaging Bural, Berk; ÖZGÜN, ÖZLEM; YILMAZ, ASIM EGEMEN; Kuzuoğlu, Mustafa (2022-01-01) The most time-consuming part of the conventional Shooting and Bouncing Ray (SBR) method is the ray tracing process, which increases the computation time because of the large number of ray tubes used to model the incident wave and the large number of triangles used to model the surface mesh. In this study, an accelerated SBR method is presented to reduce the computational burden. Acceleration is done both by reducing the amount of ray-triangle intersection tests with the help of octree decomposition of 3D me...
CLUSTER ALGEBRAS AND SYMMETRIC MATRICES Seven, Ahmet İrfan (2015-02-01) In the structural theory of cluster algebras, a crucial role is played by a family of integer vectors, called c-vectors, which parametrize the coefficients. It has recently been shown that each c-vector with respect to an acyclic initial seed is a real root of the corresponding root system. In this paper, we obtain an interpretation of this result in terms of symmetric matrices. We show that for skew-symmetric cluster algebras, the c-vectors associated with any seed defines a quasi-Cartan companion for the ...
Feedback motion planning of unmanned surface vehicles via random sequential composition Ege, Emre; Ankaralı, Mustafa Mert (SAGE Publications, 2019-08-01) In this paper, we propose a new motion planning method that aims to robustly and computationally efficiently solve path planning and navigation problems for unmanned surface vehicles (USVs). Our approach is based on synthesizing two different existing methodologies: sequential composition of dynamic behaviours and rapidly exploring random trees (RRT). The main motivation of this integrated solution is to develop a robust feedback-based and yet computationally feasible motion planning algorithm for USVs. In ...
Height Estimation for Ballistic Platforms using Differential Measurements Vural, Aydin; Sengul, Orhan; Demir, Şimşek; Hizal, Altunkan (2013-10-01) Use of radio waves is a very common choice for proximity fuzes. The stand-off distance for fuzes varies between a lower and an upper limit depending on the electromagnetic reflectivity of terrain (target). If the reflectivity of the terrain is comparably higher, the return power at the receiver reaches to the threshold level more quickly and the stand-off distance increases. The work presented here introduces an approach to estimate the height of airborne ballistic platforms more precisely compared with the...

Citation Formats

İ. Çalışkan, “Radar target classification based on range profiles and isar images,” M.S. - Master of Science, Middle East Technical University, 2003.