Journal ArticleDOI
Analytic Physical Optics Solution for Bistatic, 3D Scattering From a Dihedral Corner Reflector
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TLDR
In this paper, an analytic scattering model for 3D bistatic scattering from a dihedral using geometrical optics (GO) and physical optics (PO) is derived, and the resulting parametric scattering model is presented in terms of the vertical and horizontal co-polarization and cross polarization responses that correspond to the outputs of industry-standard numerical prediction codes.Abstract:
We derive an analytic scattering model for 3D bistatic scattering from a dihedral using geometrical optics (GO) and physical optics (PO). We use GO to trace ray reflections, and we evaluate the PO integral(s) for the field scattered by each plate of the dihedral. Multiple cases of reflection geometry are considered to account for effects of the dihedral plate size and antenna aspect angles. The complex-valued (amplitude and phase) scattering response is derived. The resulting parametric scattering model is presented in terms of the vertical and horizontal co-polarization and cross-polarization responses that correspond to the outputs of industry-standard numerical prediction codes. Comparing the derived model to available codes for method of moments (MoM), shooting and bouncing rays (SBR), and parametric models (PM), we demonstrate that the derived solution achieves the same accuracy as SBR, approximates MoM, is more accurate than PM, and does so in fast computation time comparable to a PM.read more
Citations
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Journal ArticleDOI
A Cooperative MIMO Radar Network Using Highly Integrated FMCW Radar Sensors
TL;DR: An incoherent radar network based on integrated radar sensors with independently generated frequency- modulated continuous wave-modulated transmit signals, performing both monostatic and bistatic distance measurements is presented.
Journal ArticleDOI
Nonparametric Bayesian Attributed Scattering Center Extraction for Synthetic Aperture Radar Targets
TL;DR: A novel ASC feature extraction algorithm for SAR targets based on Lévy random fields in a nonparametric Bayesian framework and a reversible jump Markov chain Monte Carlo (RJ-MCMC) method to enable relatively fast posterior inference is presented.
Journal ArticleDOI
On the Modified Theory of Physical Optics
TL;DR: In this paper, it is shown that violations of the geometrical optics (GO), introduced in this technique, result in the MTPO solutions which do not satisfy the Helmholtz equation.
Journal ArticleDOI
An Accurate Bistatic Scattering Center Model for Extended Cone-shaped Targets
TL;DR: An accurate bistatic scattering center model for cone-shaped targets is proposed in this article, which includes not only the sliding scattering centers on the smooth surface and bottom edge, but also the scattering centers induced by creeping waves and traveling waves which are not considered in the previous models.
Journal ArticleDOI
Accurate Analysis of Target Characteristic in Bistatic SAR Images: A Dihedral Corner Reflectors Case
TL;DR: In this paper, the scattering characteristic of dihedral corner reflectors is accurately analyzed in bistatic synthetic aperture images and the variation of RCS with the changing opening angle is formulated and the method to design a proper bistatics radar for maximizing the detection capability is provided.
References
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Book
Radar Cross Section
TL;DR: In this paper, the authors show how the RCS gauge can be predicted for theoretical objects and how it can be measured for real targets, and the two most practical ways to reduce RCS are shaping and absorption.
Journal ArticleDOI
Attributed scattering centers for SAR ATR
Lee C. Potter,Randolph L. Moses +1 more
TL;DR: This paper presents a framework for feature extraction predicated on parametric models for the radar returns, and presents statistical analysis of the scattering model to describe feature uncertainty, and provides a least-squares algorithm for feature estimation.
Journal ArticleDOI
Canonical Scattering Feature Models for 3D and Bistatic SAR
TL;DR: In this paper, a 3D bistatic parametric model is proposed to describe the radar scattering responses of six canonical shapes: a rectangular plate, dihedral, trihedral, cylinder, top-hat, and sphere.
Journal ArticleDOI
On the derivation of bistatic RCS from monostatic measurements
TL;DR: In this article, the relationship between bistatic and monostatic RCS is discussed in terms of the combined effect of individual scattering centers on the target, where the concept of reradiation lobe patterns of the individual scattering centres is defined.