254 research outputs found
RCS-Image Dataset
No full text<p>Note: There is a single zip file of the project available under the name "<a href="https://zenodo.org/api/files/30cdde03-6e96-4019-9a1a-bef54f3d2737/RCS%20Image%20Dataset.zip">RCS Image Dataset.zip </a>"</p>
<p>A synthetic dataset for object detection, semantic segmentation and depth recognition was created using images from a virtual environment in Unreal Engine. This dataset that could be used to retrain neural networks on virtual aerial images, for object detection, segmentation and depth planning.</p>
<p>There is ground truth for full pixel level semantic segmentation and object detction by way of bounding box coordinates in .exif files. The main labels present in the dataset are train truck and gas cylinders The size of the data is currently more than 10GB, with 1000 aerial images, from 100 different waypoints at 10 different heights. For each raw image, there is also an associated depth image, a segmented image, object ground truths with bounding box, and the metadata .exif file.</p>
<p>If you found this dataset useful for your reserach, please cite as,</p>
<pre>@article{smyth2018virtual,
title={A Virtual Environment with Multi-Robot Navigation, Analytics, and Decision Support for Critical Incident Investigation},
author={Smyth, David L and Fennell, James and Abinesh, Sai and Karimi, Nazli B and Glavin, Frank G and Ullah, Ihsan and Drury, Brett and Madden, Michael G},
journal={arXiv preprint arXiv:1806.04497},
year={2018}
}</pre>
<p> </p>Note: There is a single zip file of the project available under the name "RCS Image Dataset.zip
A Review on SAR Imaging Techniques for Low RCS Targets
No full textAbstract: The method known as synthetic aperture radar (SAR) is utilized for creating high-resolution photographs stationary scenes. SAR is an imaging radar framed on a moving platform. In radar signal processing discovery of a weakly observable target is one of the most interesting area. In this survey, we will discuss about radar systems. Typical applications of radar include synthetic aperture radar, military application, airborne and spaceborne operation, speed control, air traffic control, and remote sensing. We also study about various imaging techniques that are used. Finally, potential applications of SAR imaging techniques.
Keywords: SAR, detection, observable target, imaging techniques, radar system.
Title: A Review on SAR Imaging Techniques for Low RCS Targets
Author: Sakshi Latthe, Sagar Mohite, Latish Tagde, P.G. Chilveri, Nargis Akhter, A. Arockia Bazil Raj
International Journal of Computer Science and Information Technology Research
ISSN 2348-1196 (print), ISSN 2348-120X (online)
Vol. 10, Issue 4, October 2022 - December 2022
Page No: 69-85
Research Publish Journals
Website: www.researchpublish.com
Published Date: 27-December-2022
DOI: https://doi.org/10.5281/zenodo.7485765
Paper Download Link (Source)
https://www.researchpublish.com/papers/a-review-on-sar-imaging-techniques-for-low-rcs-targetsInternational Journal of Computer Science and Information Technology Research, ISSN 2348-1196 (print), ISSN 2348-120X (online), Research Publish Journals, Website: www.researchpublish.co
The Annals: Welcoming the future of Medicine
No full text10.47102/annals-acadmedsg.2021530Annals of the Academy of Medicine, Singapore5012877-87
RCS Estimation by Single Frequency Near-field Data
No full textRadar Cross Section (RCS) is a far-field quantity that describes the scattering ability of a target across the different directions. Nonetheless, for a number of reasons, it is convenient to use near-field data for RCS estimation. In this contribution, an imaging based method for monostatic RCS estimation is considered. In particular, a comparison between single-frequency and multi-frequency near-field data is presented
Shaping Analysis for Radar Cross Section (RCS) Reduction for Missiles
No full textA broadband RCS reduction study is proposed based on
shaping considerations . Geodesic Constant Method (GCM) developed by the author is proposed to be applied in conjunction with the GTD for application to hybrid surfaces, modelling the missiles
Radar cross section (RCS) modeling and simulation, part 1: a tutorial review of definitions, strategies, and canonical examples
No full textUluışık, Çaǧatay (Dogus Author), Sevgi, Levent (Dogus Author)Modeling and simulation strategies for radar cross section (RCS) prediction are reviewed, and a novel FDTD-based virtual RCS prediction tool is introduced in this two-part paper. Part 1 is reserved for a tutorial review. Concepts and definitions related to RCS modeling are outlined. Analytical approaches, i.e., high-frequency asymptotics (HFA), as well as powerful time- and frequency-domain numerical methods, are given. Canonical examples using the finite-difference time-domain (FDTD) Method, the method of moments (MoM), and physical optics (PO) are presented.IEEE Antennas and Propagation Societ
MATLAB-Based 3-D MoM and FDTD codes for the RCS analysis of realistic objects
No full textUslu, Mehmet Alper (Dogus Author) -- Sevgi, Levent (Dogus Author)Three-dimensional (3-D) MAT-LAB-based codes are developed for radar cross-section (RCS) modeling and simulation (MODSIM) using method of moments (MoM) and finite-difference time-domain (FDTD) approaches. Any object can realistically and comparatively be investigated. Electrical engineering education and training necessities electromagnetic (EM) MODSIM approaches [1]–[2][3]. Modeling and simulation has long been discussed in this magazine both as feature articles and as tutorials in this column. Multipurpose two-dimensional (2-D) FDTD-based education/training tools have been developed and shared with the reader [4], [5]. A series of articles [6]–[7][8] discussed RCS modeling and simulation and presented 3-D FDTD-based RCS packages. Finally, MATLAB-based 2-D FDTD codes were introduced to the use of the reader who is interested in EM MODSIM.IEEE Antennas and Propagation Societ
Roles of Reactive Carbonyl Species (RCS) in Plant Response to Abiotic Stress
No full textAbiotic and biotic stress conditions lead to production of reactive carbonyl species (RCS) which are lipid peroxide derivatives and have detrimental effects on plant cells especially at high concentrations. There are several molecules that can be classified in RCS; among them, 4-hydroxy-(E)-2-nonenal (HNE) and acrolein are widely recognized and studied because of their toxicity. The toxicity mechanisms of RCS are well known in animals but their roles in plant systems especially signaling aspects in metabolism need to be addressed. This chapter focuses on the production mechanisms of RCS in plants as well as how plants scavenge and modify them to prevent irreversible damage in the cell. We aimed to get a comprehensive look at the literature to summarize the signaling roles of RCS in plant metabolism and their interaction with other signaling mechanisms such as highly recognized reactive oxygen species (ROS) signaling. Changing climate promotes more severe abiotic stress effects on plants which also decrease yield on the field. The effects of abiotic stress conditions on RCS metabolism are also gathered in this chapter including their signaling roles during abiotic stresses. Different methods of measuring RCS in plants are also presented in this chapter to draw more attention to the study of RCS metabolism in plants. © The Author(s), under exclusive license to Springer Science+Business Media, LLC, part of Springer Nature 2024
Benign reversible encephalopathy syndrome after bevacizumab therapy for metastatic ovarian cancer
No full text[No abstract available]Allen JA, 2006, ARCH NEUROL-CHICAGO, V63, P1475, DOI 10.1001-archneur.63.10.1475; Glusker P, 2006, NEW ENGL J MED, V354, P980; Kastrup O, 2012, J NEUROL, V259, P1383, DOI 10.1007-s00415-011-6362-9; Roth C, 2011, Pract Neurol, V11, P136, DOI 10.1136-practneurol-2011-000010; Seet RCS, 2012, QJM-INT J MED, V105, P69, DOI 10.1093-qjmed-hcr139; Tlemsani C, 2011, TARGET ONCOL, V6, P253, DOI 10.1007-s11523-011-0201-x1
Numerical research on the RCS of plasma
No full textIn this paper, the interaction between plasma and electromagnetic waves is studied. it demonstrates that high reflection coefficient requires low collision frequency and high plasma density. If its density is overdensed, the scattering characteristics of nonmagnetized collisionless cold plasma and metal conductor are comparable. As all example, the parameters of a plasma sphere with required RCS is given. The scattering characteristics of plasma with a large space scale are also discussed.Engineering, Electrical & ElectronicTelecommunicationsCPCI-S(ISTP)
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