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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Proceedings ArticleDOI
A Novel Ionospheric TEC Estimation Method Based on L-Band ISAR Signal Processing
Jixiang Fu,Dan Xu,Mengdao Xing +2 more
TL;DR: A novel ionospheric TEC estimation method base on L-band inverse synthetic aperture radar (ISAR) signal processing, which is a two-step strategy, validates the robustness and effectiveness of the proposed method.
Proceedings ArticleDOI
Second-order statistics of electromagnetic pulse propagation through the turbulent ionosphere
TL;DR: In this article, a two-position, two-frequency and two-time mutual coherence function of the received signals after propagating through random media was derived by using an analytic solution for a plane wave recently obtained by iteration of an integral equation and the power impulse response, spectra and delay-Doppler scattering function were also derived.
Proceedings ArticleDOI
The wideband ionospheric sounder cubesat experiment (WISCER)
TL;DR: A preliminary design study to assess the possibility of flying a wideband ionospheric sounder cubesat experiment (WISCER) on a low cost cubesat designed to measure and evaluate the ionospherical channel in anticipation of the development of operational, space-based, low frequency systems.
Journal ArticleDOI
Monitoring of Ionospheric Scintillation Phenomena Using Synthetic Aperture Radar (sar)
TL;DR: In this paper, a scintillation event was observed by L-band Advanced Land Observation Satellite (ALOS)-2 Phased Array L-type SAR (PALSAR) over southern India on March 23, 2015.
Journal ArticleDOI
On the Capacity of Mid-latitude High Frequency Ionospheric Channel
TL;DR: This paper derives a closed form expression of the average capacity for Mid-latitude High Frequency (HF) ionospheric channels by evaluating the variance of the amplitude attenuation versus the Doppler spread and then the channel capacity.
References
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Synthetic aperture radar interferometry
Paul A. Rosen,S. Hensley,Ian Joughin,F.K. Li,Soren N. Madsen,Ernesto Rodriguez,Richard M. Goldstein +6 more
TL;DR: In this paper, the authors present a review of the techniques of interferometry, systems and limitations, and applications in a rapidly growing area of science and engineering, including cartography, geodesy, land cover characterization, and natural hazards.
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