Journal ArticleDOI
Two-dimensional and full polarimetric imaging by a synthetic aperture FM-CW radar
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TLDR
In this paper, the authors applied the principle of radar polarimetry to a synthetic aperture frequency-modulated continuous wave (FM-CW) radar and presented results based on two-dimensional (2-D) full polarimetric imaging.Abstract:
This paper applies the principle of radar polarimetry to a synthetic aperture frequency-modulated continuous wave (FM-CW) radar and presents results based on two-dimensional (2-D) full polarimetric imaging. It is shown that the polarimetric target reflection coefficients obtained by the synthetic aperture FM-CW radar are elements of a Sinclair scattering matrix, although the coefficients are derived from a wide band signal. Using the scattering matrix optimization procedure, a 2- D polarimetric imaging experiment (including Co-Pol maximum, minimum, span, and phase imaging) of an orthogonally placed linear target set was successfully carried out in the laboratory. This result demonstrates the validity of S-band (8.2-9.2 GHz) FM-CW radar polarimetry, and it presents a demonstration of a full polarimetric 2-D FM-CW imaging radar systemread more
Citations
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Journal ArticleDOI
Signal Processing for FMCW SAR
TL;DR: A novel processing solution is presented, which solves the nonlinearity problem for the whole range profile of the FMCW SAR signal model and is applied to stripmap, spotlight, and single-transmitter/multiple-receiver digital-beamforming SAR operational mode.
Journal ArticleDOI
Subsurface fracture measurement with polarimetric borehole radar
TL;DR: An antenna compensation algorithm that is achieved by an inverse filtering method with the antenna transfer functions experimentally determined by crosshole measurements is presented, and reflections from subsurface fractures show significant depolarization in the polarimetric single-hole reflection measurements.
Journal ArticleDOI
Three-Dimensional Real-Time Through-the-Wall Radar Imaging With Diffraction Tomographic Algorithm
Wenji Zhang,Ahmad Hoorfar +1 more
TL;DR: The spectral expansion of the three-layered medium dyadic Green's function is employed to derive a linear relationship between the spatial Fourier transforms of the image and the scattered field under Born approximation and the image can be efficiently reconstructed with inverse fast Fourier transform (IFFT).
Book ChapterDOI
Synthetic Aperture Radar
TL;DR: In this paper, a Terrain Map Range Resolution Azimuth Resolution Geometric Factors Polarimetric SAR SAR Errors Height Measurement PolarIMetric Interferometry Phase Unwrapping References Problems are discussed.
Journal ArticleDOI
Radar Polarimetry Analysis Applied to Single-Hole Fully Polarimetric Borehole Radar
Jian-guo Zhao,Motoyuki Sato +1 more
TL;DR: The potential of polarimetric target decomposition techniques to fracture characterization is shown, which provides valuable information about water permeabilities of fractures in hydrogeological studies.
References
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Book
High Resolution Radar
TL;DR: In this paper, the authors apply the radar range equation to high-resolution radar high resolution radar design high range resolution waveforms and processing synthetic high-range resolution radar synthetic aperture radar inverse synthetic aperture Radar (ISAR) three dimensional imaging with monopulse radar target imaging with non-coherent radar systems applications for surveillance.
Patent
Synthetic aperture radar
Yoshihisa Hara,芳久 原 +1 more
TL;DR: In this article, the authors proposed to enhance the resolution without sacrificing the image quality by additionally providing a plurality of sub-apertures, hybrid synthetic units and phase shifters and providing two systems of transmitter, receiver and A/D converter.
Book
High Resolution Radar Cross-Section Imaging
TL;DR: In this paper, the fundamental imaging concepts instrumentation and signal processing for RCS imaging two-dimensional range, cross-range imaging of rotating objects focused synthetic-aperture processing tomographic imaging maximum entropy methods.
Book
Synthetic Aperture Radar
TL;DR: In this article, the authors provide a clear and concise introduction to radar signal processing for nonspecialists - those who want to perform image enhancement, parameter estimation, pattern recognition, and other computer-based information extraction techniques on the radar imagery as well as cartographers, agronomists, and oceanographers.
Journal ArticleDOI
On the basic principles of radar polarimetry: the target characteristic polarization state theory of Kennaugh, Huynen's polarization fork concept, and its extension to the partially polarized case
TL;DR: In this article, the target characteristic polarization state theory is developed for the coherent case using the three stage, the basis transformation, and the power (Mueller) matrix optimization procedures.
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