scholarly journals Calculation of the radar cross-section of complex objects for the problem of modeling a synthetic aperture radar

2019 ◽  
Vol 516 ◽  
pp. 012047
Author(s):  
A N Leukhin ◽  
A A Voronin ◽  
V I Bezrodnyi
Keyword(s):  
Synthetic Aperture Radar ◽  
Cross Section ◽  
Radar Cross Section ◽  
Synthetic Aperture ◽  
Complex Objects ◽  
Aperture Radar

scholarly journals Herramientas software en el mundo del electromagnetismo computacional

TecnoLógicas ◽  
2011 ◽  
pp. 7
Author(s):  
Lorena Lozano-Plata
Keyword(s):  
Synthetic Aperture Radar ◽  
Cross Section ◽  
Radar Cross Section ◽  
Synthetic Aperture ◽  
Inverse Synthetic Aperture Radar ◽  
Sobre Todo ◽  
Aperture Radar

A partir de los años 80 y durante décadas, las herramientas de simulación empleadas en el mundo electromagnético computacional han tenido una gran demanda, pero hoy en día, gracias a los avances tecnológicos relacionados sobre todo con la computación y los métodos numéricos, ha hecho posible que, con mayor facilidad, se pueda investigar y realizar simulaciones electromagnéticas. Estas herramientas software abarcan un amplio margen de análisis y diseño, como son: el estudio de la compatibilidad electromagnética entre equipos en diferentes entornos, el diseño y análisis de antenas, análisis y diseño de circuitos, componentes pasivos de microondas, cálculo de la sección radar (Radar Cross Section, RCS) y de imágenes ISAR (Inverse Synthetic Aperture Radar), análisis de antenas embarcadas sobre estructuras complejas, análisis Doppler, radio propagación tanto en entornos exteriores como en interiores, análisis de sistemas radio y estudio del acoplo entre antenas, etc.

scholarly journals Incidence angle normalization of Wide Swath SAR data for oceanographic applications

2016 ◽  
Vol 8 (1) ◽  
Author(s):  
Konstantinos Topouzelis ◽  
Suman Singha ◽  
Dimitra Kitsiou
Keyword(s):  
Synthetic Aperture Radar ◽  
Cross Section ◽  
Incidence Angle ◽  
Radar Cross Section ◽  
Sea Surface ◽  
Synthetic Aperture ◽  
Progressive Reduction ◽  
Sar Images ◽  
Wide Swath

AbstractA backscattering trend in the range direction of the signal received by Synthetic Aperture Radar (SAR) in Wide Swath (WS) mode results in a progressive reduction of brightness over images from near to far range, which affects the detection and classification of sea surface features on wide swath SAR images. The aim of the present paper is to investigate methods for limiting the issue of Normalized Radar Cross-Section (NRCS or

scholarly journals Optimal radar cross section estimation in synthetic aperture radar with planar antenna array

2021 ◽  
pp. 50-59
Author(s):  
Valeriy Volosyuk ◽  
Simeon Zhyla ◽  
Vladimir Pavlikov ◽  
Dmitriy Vlasenko ◽  
Vladimir Kosharskiy ◽  
...  
Keyword(s):  
Synthetic Aperture Radar ◽  
Antenna Array ◽  
Cross Section ◽  
Radar Cross Section ◽  
Scattering Coefficient ◽  
Synthetic Aperture ◽  
Statistical Characteristics ◽  
Planar Antenna ◽  
Antenna Aperture ◽  
Planar Antenna Array

The optimization problem of statistical synthesis of the method for radar cross section estimation in synthetic aperture radar with planar antenna array is solved. The desired radar cross section is given as a statistical characteristic of a spatially inhomogeneous complex scattering coefficient of the studying media. In fact it is developed new methods of inverse problems solution not with respect to the restoration of coherent images in the form of spatial distribution of complex scattering coefficient but with respect to the statistical characteristics of inhomogeneous (spatially nonstationary) random processes. The electrophysical parameters of surfaces and their statistical characteristics are considered as functions of spatial coordinates. The maximum likelihood method was chosen as the optimization method. The obtained results make it possible to determine the multichannel structure, the optimal method of surface observation and the potential spatial resolution in aerospace scatterometric radars with antenna array. Optimal operations for processing space-time signals are determined and a modified method for synthesizing antenna aperture is proposed, which in contrast to the classical algorithm for synthesizing antenna aperture that integrates the product of the received signal and the reference signal equal to a single signal additionally implements the decorrelation of signals reflected from the earth's surface, The new operation of the scattered signals decorrelation consists in their integration with the space-time inverse correlation function. To confirm the reliability of the results obtained, simulation modeling of the classical method for the synthesis of coherent images and the proposed optimal one was carried out. From the analysis of the results it flows that propose method has higher quality and smaller size of spackle noise. The results obtained in the article can be used to develop and substantiate the requirements for the tactical and technical characteristics of promising aerospace-based scatterometric radars with planar phased antenna arrays.

scholarly journals Polarimetric radar cross section under SAR geometry

2013 ◽  
Vol 11 ◽  
pp. 277-282 ◽  
Author(s):  
N. Phruksahiran ◽  
M. Chandra
Keyword(s):  
Electromagnetic Wave ◽  
Electric Field ◽  
Synthetic Aperture Radar ◽  
Cross Section ◽  
Radar Cross Section ◽  
Field Approximation ◽  
Synthetic Aperture ◽  
Polarimetric Radar ◽  
Conducting Surface ◽  
New Approach

Abstract. In this paper, the radar cross section of canonical scatter, with perfectly conducting surface, under the synthetic aperture radar geometry and polarized electromagnetic wave, has been considered and a new approach of polarized scattered electric field approximation for its evaluation has been developed.

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