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621.396.969 --- Radar --- Radar cross sections --- Cross sections, Radar --- Radar cross section measurements --- Radar echo areas --- RCS (Radar) --- Signal processing --- Detectors --- Electronic systems --- Pulse techniques (Electronics) --- Radio --- Remote sensing --- Applications of radar --- Radar cross sections. --- Radar. --- 621.396.969 Applications of radar
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In this book, the RCS of a parallel-fed linear and planar dipole array is derived using an approximate method. The signal propagation within the phased array system determines the radar cross section (RCS) of phased array. The reflection and transmission coefficients for a signal at different levels of the phased-in scattering array system depend on the impedance mismatch and the design parameters. Moreover the mutual coupling effect in between the antenna elements is an important factor. A phased array system comprises of radiating elements followed by phase shifters, couplers, and terminating load impedance. These components lead to respective impedances towards the incoming signal that travels through them before reaching receive port of the array system. In this book, the RCS is approximated in terms of array factor, neglecting the phase terms. The mutual coupling effect is taken into account. The dependence of the RCS pattern on the design parameters is analyzed. The approximate model is established as an efficient method for RCS estimation of phased arrays. This book presents a detailed formulation of approximate method to determine RCS of phased arrays, which is explained using schematics and illustrations. This book should help the reader understand the impinging signal path and its reflections/transmissions within the phased array system.
Engineering. --- Physics. --- Microwaves. --- Optical engineering. --- Electrical engineering. --- Microwaves, RF and Optical Engineering. --- Theoretical, Mathematical and Computational Physics. --- Communications Engineering, Networks. --- Radar cross sections. --- Signal processing --- Digital techniques. --- Digital signal processing --- Cross sections, Radar --- Radar cross section measurements --- Radar echo areas --- RCS (Radar) --- Digital communications --- Digital electronics --- Telecommunication. --- Hertzian waves --- Electric waves --- Electromagnetic waves --- Geomagnetic micropulsations --- Radio waves --- Shortwave radio --- Electric communication --- Mass communication --- Telecom --- Telecommunication industry --- Telecommunications --- Communication --- Information theory --- Telecommuting --- Mathematical physics. --- Electric engineering --- Engineering --- Physical mathematics --- Physics --- Mechanical engineering --- Mathematics
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This book presents the detailed analytical formulation for the RCS of parallel-fed linear dipole array in the presence of mutual coupling. The radar cross section (RCS) of an object represents its electromagnetic (EM) scattering properties for a given incident wave. The analysis of scattered field is critical in military and defence arenas, especially while designing low-observable platforms. It is well-known that the presence of an antenna/array on the target influences its echo area significantly. The primary cause for such scattering of the incident signals is reflection that occurs within the antenna aperture and its feed network. In this book, the RCS estimation is done based on the signal path within the antenna system. The scattered field is expressed in terms of array design parameters including the reflection and transmission coefficients. The computed results show the variation in the RCS pattern with and without mutual coupling. The effect of finite dipole-length, inter-element spacing, scan angle, array configuration, amplitude distribution and terminating load impedance on the RCS pattern is studied. It is shown that the array RCS can be controlled by choosing optimum design parameters, including terminating impedance and geometric configuration. This book explains each step of the RCS estimation and analysis of dipole array with detailed schematics, tables and illustrations. Moreover, it includes parametric analysis of RCS estimation and control. This book provides an insight into the phenomenon of scattering within the phased array system.
Engineering. --- Physics. --- Microwaves. --- Optical engineering. --- Electrical engineering. --- Microwaves, RF and Optical Engineering. --- Theoretical, Mathematical and Computational Physics. --- Communications Engineering, Networks. --- Radar cross sections. --- Magnetic dipoles. --- Dipoles, Magnetic --- Doublets, Magnetic --- Magnetic doublets --- Cross sections, Radar --- Radar cross section measurements --- Radar echo areas --- RCS (Radar) --- Dipole moments --- Signal processing --- Telecommunication. --- Hertzian waves --- Electric waves --- Electromagnetic waves --- Geomagnetic micropulsations --- Radio waves --- Shortwave radio --- Electric communication --- Mass communication --- Telecom --- Telecommunication industry --- Telecommunications --- Communication --- Information theory --- Telecommuting --- Mathematical physics. --- Electric engineering --- Engineering --- Physical mathematics --- Physics --- Mechanical engineering --- Mathematics
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"This monograph is intended for scientists and engineers working in the field of radar and computational electrodynamics. The book content is the result of works by group of authors who represent the scientific school of applied electrodynamics that had been established in the 1960s by Professor I.V. Sukharevsky within the Govorov Military Radiotechnical Academy. Representatives of this school went on studying electromagnetic wave scattering from objects of various nature consequently in Kharkiv Military University, United Scientific Research Institute of Ukrainian Armed Forces, and Kharkiv Ivan Kozhedub University of Air Force"--
Radar --- Electromagnetic waves --- Radar cross sections. --- Radar targets. --- Data processing. --- Scattering. --- Targets, Radar --- Cross sections, Radar --- Radar cross section measurements --- Radar echo areas --- RCS (Radar) --- Signal processing --- Scattering (Physics) --- Detectors --- Electronic systems --- Pulse techniques (Electronics) --- Radio --- Remote sensing --- Electromagnetics and Microwaves --- Communications System Design --- Aerospace Engineering --- ENG --- ElectricalEngineering --- MechanicalEngineering --- SCI-TECH --- STM --- Computational Electrodynamics --- Electromagnetic Scattering Theory --- Electromagnetic Wave Scattering --- Physical Optics Approximation --- Radar Cross-Section Prediction --- Radar Detection Algorithms --- Radar Microwaves --- Radar Recognition Algorithms --- Radar Scattering Computation --- Radar Scattering Software --- RCS Prediction --- Reduction of Radar Observability --- Sergey V. Nechitaylo --- Stealth Technology --- Valery M. Orlenko --- Vitaly A. Vasilets
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This book discusses the active and passive radar cross section (RCS) estimation and techniques to examine the low observable aerospace platforms. It begins with the fundamentals of RCS, followed by the dielectric, magnetic and metamaterials parameters of the constituent materials and then explains various methods and the emerging trends followed in this area of study. The RCS estimation of phased array including the mutual coupling effect is also presented in detail in the book. The active RCS reduction is carefully touched upon through the performance of phased arrays, sidelobe cancellers and mitigation of multipath effect. Providing information on various adaptive algorithms like least mean square (LMS), recursive least square (RLS) and weighted least square algorithms, the authors also mention the recent developments in the area of embedded antennas, conformal load bearing antenna, metamaterials and frequency selective surface (FSS) based RCS reduction.
Radar cross sections. --- Adaptive antennas. --- Antenna arrays. --- Radar --- Echo suppression (Telecommunication) --- Stealth aircraft. --- Interference. --- Aircraft, Stealth --- Invisible military airplanes --- Low-observables military airplanes --- Low radar signature military airplanes --- Low signatures military airplanes --- Military airplanes, Undetectable --- Undetectable military airplanes --- Jet planes, Military --- Stealth technology --- Echo cancellation (Telecommunication) --- Echo control (Telecommunication) --- Suppression, Echo (Telecommunication) --- Telecommunication --- Radio noise --- Signal processing --- Telecommunication systems --- Jamming (Radar) --- Radar interference --- Electric interference --- Arrays, Antenna --- Antennas (Electronics) --- Large space structures (Astronautics) --- Cross sections, Radar --- Radar cross section measurements --- Radar echo areas --- RCS (Radar) --- Echo suppression --- Jamming
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