Journal ArticleDOI
A survey of ionospheric effects on space-based radar
Zheng-Wen Xu,Jian Wu,Zhensen Wu +2 more
TLDR
In this paper, a survey of the potential ionospheric effects on the performance of space-based radar systems (SBRs) operating in the ambient ionosphere environment is presented.Abstract:
In this survey, we fully review almost all potential ionospheric effects on the performance of space-based radar systems (SBRs), which operate in the ambient ionosphere environment; in particular, we review the use of space-based synthetic aperture radar systems (SARs) for imaging. There are two families of effects involved. One is the effects of the background ionosphere (non-turbulent ionosphere), such as dispersion, group delay, refraction, Faraday rotation, and phase shift. The other is the effects due to ionospheric irregularities, such as refractive index fluctuation, phase perturbation, angle-of-arrival fluctuation, pulse broadening, clutter, and amplitude scintillation. These effects adversely affect SAR imaging in several respects, such as by causing image shift in the range, and degradations of the range resolution, azimuthal resolution, and/or the resolution in height (elevation). We also review ionospheric irregularity characteristics and descriptions, propagation channel statistics, ...read more
Citations
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Journal ArticleDOI
A tutorial on synthetic aperture radar
Alberto Moreira,Pau Prats-Iraola,Marwan Younis,Gerhard Krieger,Irena Hajnsek,Konstantinos Papathanassiou +5 more
TL;DR: This paper provides first a tutorial about the SAR principles and theory, followed by an overview of established techniques like polarimetry, interferometry and differential interferometric as well as of emerging techniques (e.g., polarimetric SARinterferometry, tomography and holographic tomography).
Journal ArticleDOI
Recent Trend and Advance of Synthetic Aperture Radar with Selected Topics
TL;DR: A short review is presented on the recent trend and development of SAR and related techniques with selected topics, including the fields of applications, specifications of airborne and spaceborne SARs, and information contents in and interpretations of amplitude data, interferometric SAR (InSar) data, and polarimetric SAR (PolSAR) data.
Journal ArticleDOI
Duration, magnitude, and frequency of subaerial volcano deformation events: New results from Latin America using InSAR and a global synthesis
TL;DR: In this paper, satellite-based interferometric synthetic aperture radar (InSAR) was used to make the first systematic search for deformation in all volcanic arcs of Latin America (including Mexico, Central America, the Caribbean, and the northern and southern Andes), spanning 2006-2008.
Journal ArticleDOI
Accuracy and Resolution of ALOS Interferometry: Vector Deformation Maps of the Father's Day Intrusion at Kilauea
TL;DR: Improved coherence combined with similar or better accuracy and resolution suggests that L-band ALOS will outperform C-band ERS in the recovery of slow crustal deformation.
Journal ArticleDOI
Toward Operational Compensation of Ionospheric Effects in SAR Interferograms: The Split-Spectrum Method
TL;DR: The results show how the split-spectrum method is able to systematically compensate the ionospheric phase in interferograms, with the expected accuracy, and can therefore be a valid element of the operational processor.
References
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Journal ArticleDOI
Two-frequency intensity cross-spectrum
TL;DR: In this paper, the intensity cross-spectrum (spatial Fourier transform of the two-frequency intensity correlation) for scintillations caused by a plane wave passing through a random phase screen is considered.
Journal ArticleDOI
Double passage analysis in random media using two-scale random propagators
R. Mazar,A. Bronshtein +1 more
TL;DR: In this article, an approximate analytical solution for the high-frequency propagator obtained by applying the multiscale expansion asymptotic procedure to the partial differential equation governing the propagation is presented.
Journal ArticleDOI
Statistics of pulse arrival time in turbulent media
C. H. Liu,K. C. Yeh +1 more
TL;DR: In this paper, the statistical moments for the pulse arrival time were derived in the limit of very strong scintillations such that the fluctuations are in the fully saturated regime, and it was shown that the mean arrival time can exceed the free space time delay by an appreciable value.
Journal ArticleDOI
Statistical temporal behaviour of pulse wave propagation through continuous random media
Zheng-Wen Xu,Jian Wu,Zhensen Wu +2 more
TL;DR: In this paper, the authors carried out a study on the temporal behavior of electromagnetic pulses propagating through random media using temporal moments and an analytic solution of a two-frequency mutual coherence function.
Journal ArticleDOI
Numerical Simulations and Moments of the Field from a Point Source in a Random Medium
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