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
More filters
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
More filters
Journal ArticleDOI
Dispersive distortions of transionospheric broadband VHF signals
TL;DR: In this article, the dispersive distortions of broadband signals propagating through the Earth's ionosphere are examined in relation to their influence on the range resolution of radars with frequencies from 100 MHz to 30 GHz.
Proceedings ArticleDOI
Time-of-arrival measurement for transionospheric EMP
TL;DR: In this paper, an ionospheric-delay correction model that measures the time of arrival (TOA) of a transionospheric electromagnetic pulse (EMP) is presented, where the pulsebroadening effect due to the dispersive ionosphere is incorporated into the ionosphere group-delay model to provide an improved delay correction in measurements of EMP.
Proceedings ArticleDOI
An algorithm for estimation of Faraday rotation for P-band polarimetric SAR
A.I. Zakharov,N.A. Armand +1 more
TL;DR: The peculiarities of the use of the P radio frequency band for spaceborne SAR observations are discussed with emphasis on the Faraday rotation of the plane of radiowaves traveling in the ionosphere.
Journal ArticleDOI
Effects of two-way decorrelation on radar detection in scintillation
TL;DR: In this article, the statistics of two-way scintillation are derived for the case where the uplink and downlink both experience Rayleigh fading and where there is arbitrary correlation between the Scintillation on the two paths.
Journal ArticleDOI
Frequency cross-spectrum of intensity fluctuations produced by a deep-phase screen
TL;DR: In this paper, the frequency cross-spectrum for intensity fluctuations arising in a wave that has traversed a deeply modulated phase-changing screen is investigated in the case when the incident wave field is non-monochromatic.
Related Papers (5)
On the detection of Faraday rotation in linearly polarized L-band SAR backscatter signatures
Anthony Freeman,S.S. Saatchi +1 more
Prediction, Detection, and Correction of Faraday Rotation in Full-Polarimetric L-Band SAR Data
Franz J. Meyer,Jeremy B. Nicoll +1 more