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1 - 12 de 15 resultados para “hema singh”
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  • Invasive Alien Plants in Urban Ecosystems

    Emerging Concerns and Socio-Ecological Dimensions

    Edición de Rishikesh Singh, Rahul Bhadouria, Sachchidanand Tripathi, Ravinder Kumar Kohli, Hema Singh ...
    Series series Earth and Environmental Science (R0)
    This book provides a collection of contemporary researches focused on the challenges, impacts and precautionary measures to be taken to address invasive alien plant species in urban systems. The current scenario of rapid urbanization and anthropogenic disturbances across the globe are supplemental to the expansion of invasive alien plant species. Urban ecosystems are strangely under-explored in ... Leer más

    $152.99 USD

  • Optimization of Multilayered Radar Absorbing Structures (RAS) using Nature Inspired Algorithm

    de Vineetha Joy, Vishal G. Padwal, Hema Singh, Raveendranath U. Nair ...
    Stealth technology is a crucial pre-requisite in the combat zone, where swiftness, surprise and initiative are the decisive elements for survivability. The supreme goal here is to reduce the visibility of military vehicles by shaping, application of radar absorbing materials, passive cancellation, active cancellation etc. With respect to multilayered radar absorbing structures (RAS), this book ... Leer más

    $70.99 USD

  • Low Radar Cross Section HIS-Based Phased Array

    Radiation and Scattering Analysis

    de Hema Singh, Avinash Singh ...
    The design and development of low radar cross section (RCS) phased array has been a challenging subject in stealth technology. The frequency selective surface elements act as absorbers in specific frequency band and facilitate gain enhancement and reduction of antenna RCS. This book presents a comprehensive EM design and analysis of such low-profile patch arrays with high impedance surface-based ... Leer más

    $88.99 USD

  • Fundamentals of RCS Prediction Methodology using Parallelized Numerical Electromagnetics Code (NEC) and Finite Element Pre-processor

    de Vineetha Joy, G. L. Rajeshwari, Hema Singh, Raveendranath U. Nair ...
    Series series Engineering (R0)
    This book presents a novel methodology for the computation of RCS of metallic structures using a parallelized version of NEC in conjunction with a finite element preprocessor which has been strategically incorporated for simplifying geometry modelling catering to NEC guidelines. It includes a thorough overview of the theoretical background of NEC including all relevant aspects of formulation and ... Leer más

    $49.99 USD

  • Probe Suppression in Conformal Phased Array

    de Hema Singh, Mausumi Dutta, P. S. Neethu ...
    Series series Engineering (R0)
    This book considers a cylindrical phased array with microstrip patch antenna elements and half-wavelength dipole antenna elements. The effect of platform and mutual coupling effect is included in the analysis. The non-planar geometry is tackled by using Euler's transformation towards the calculation of array manifold. Results are presented for both conducting and dielectric cylinder. The optimal ... Leer más

    $49.99 USD

  • RCS Estimation of Linear and Planar Dipole Phased Arrays: Approximate Model

    de Hema Singh, Rakesh Mohan Jha, R. Chandini ...
    Series series Engineering (R0)
    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 ... Leer más

    $49.99 USD

  • Fundamentals of EM Design of Radar Absorbing Structures (RAS)

    de Reshma George, Hema Singh, Harish Singh Rawat, Ebison Duraisingh Daniel J ...
    Series series Engineering (R0)
    This book presents a detailed analytical formulation, and step-by-step design procedure for the electromagnetic (EM) design of radar absorbing structures (RAS). It discusses both the equivalent circuit model and Smith chart approach with illustrations to provide a clear understanding of the steps involved in designing multilayered RAS according to the desired specifications. This book is a ... Leer más

    $49.99 USD

  • Plasma-based Radar Cross Section Reduction

    de Hema Singh, Simy Antony, Rakesh Mohan Jha ...
    Series series Engineering (R0)
    This book presents a comprehensive review of plasma-based stealth, covering the basics, methods, parametric analysis, and challenges towards the realization of the idea. The concealment of aircraft from radar sources, or stealth, is achieved through shaping, radar absorbing coatings, engineered materials, or plasma, etc. Plasma-based stealth is a radar cross section (RCS) reduction technique ... Leer más

    $49.99 USD

  • Radar Cross Section of Dipole Phased Arrays with Parallel Feed Network

    de Hema Singh, H. L. Sneha, Rakesh Mohan Jha ...
    Series series Engineering (R0)
    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 ... Leer más

    $49.99 USD

  • Parallel-Fed Planar Dipole Antenna Arrays for Low-Observable Platforms

    de Hema Singh, Chandini R., Rakesh Mohan Jha ...
    Series series Engineering (R0)
    This book focuses on determination of scattering of parallel-fed planar dipole arrays in terms of reflection and transmission coefficients at different levels of the array system. In aerospace vehicles, the phased arrays are often in planar configuration. The radar cross section (RCS) of the vehicle is mainly due to its structure and the antennas mounted over it. There can be situation when the ... Leer más

    $49.99 USD

  • Active Cancellation of Probing in Linear Dipole Phased Array

    de Hema Singh, N. Bala Ankaiah, Rakesh Mohan Jha ...
    Series series Engineering (R0)
    In this book, a modified improved LMS algorithm is employed for weight adaptation of dipole array for the generation of beam pattern in multiple signal environments. In phased arrays, the generation of adapted pattern according to the signal scenario requires an efficient adaptive algorithm. The antenna array is expected to maintain sufficient gain towards each of the desired source while at the ... Leer más

    $49.99 USD

  • EM Design and Analysis of Dipole Arrays on Non-planar Dielectric Substrate

    de Hema Singh, R. Chandini, Rakesh Mohan Jha ...
    Series series Engineering (R0)
    This book presents a simple and systematic description of EM design of antenna arrays. Printed dipole antennas are known to be simple yet more efficient than wire antennas. The dielectric substrate and the presence of ground plane affect the antenna performance and the resonant frequency is shifted. This book includes the EM design and performance analysis of printed dipole arrays on planar and ... Leer más

    $49.99 USD