A Low-Power, Ambiguous Synthetic Aperture Radar Concept for Continuous Ship Monitoring
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022 This article addresses the design of a low-cost synthetic aperture radar (SAR) for a single dedicated application, namely illegal vessel detection, which can be implemented using a small satellite and is characterized by reduced transmit power and high ...
Nertjana Ustalli +2 more
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First Spaceborne Demonstration of Digital Beamforming for Azimuth Ambiguity Suppression [PDF]
IEEE Transactions on Geoscience and Remote Sensing, 2013 Over the past years, the use of multiple antenna apertures combined with digital beamforming (DBF) has been spotlighted as a promising solution for the fundamental restriction for high-resolution and wide-swath spaceborne synthetic aperture radar (SAR) imaging.
Junghyo Kim +4 more
openaire +3 more sources
ERROR ESTIMATION AND UNAMBIGUOUS RECONSTRUCTION FOR CHINESE FIRST DUAL-CHANNEL SPACEBORNE SAR IMAGING [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 Multichannel synthetic aperture radar (SAR) is a significant breakthrough to the inherent limitation between high-resolution and wide-swath (HRWS) faced with conventional SAR.
T. Jin, T. Jin, X. Qiu, D. Hu, C. Ding
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Azimuth-Resolved Circular Dichroism of Metamaterials
, 2022 Chiral optical metamaterials have attracted a great deal of attention due to their intriguing properties with respect to fundamental research and practical applications.
Shuliang Ren +19 more
core +1 more source
Tomographic Performance of Multi-Static Radar Formations: Theory and Simulations
Remote Sensing, 2021 3D imaging of Earth’s surface layers (such as canopy, sub-surface, or ice) requires not just the penetration of radar signal into the medium, but also the ability to discriminate multiple scatterers within a slant-range and azimuth resolution cell.
Ilgin Seker, Marco Lavalle
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Probabilistic analysis of ambiguities in radar echo direction of arrival from meteors [PDF]
Atmospheric Measurement Techniques, 2020 Meteors and hard targets produce coherent radar echoes. If measured with an interferometric radar system, these echoes can be used to determine the position of the target through finding the direction of arrival (DOA) of the incoming echo onto the radar.
D. Kastinen, D. Kastinen, J. Kero
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New Approach for Unambiguous High-Resolution Wide-Swath SAR Imaging
International Journal of Antennas and Propagation, 2014 The high-resolution wide-swath (HRWS) SAR system uses a small antenna for transmitting waveform and multiple antennas both in elevation and azimuth for receiving echoes.
Yueguan Lin +3 more
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FMCW sparse array imaging and restoration for microwave gauging [PDF]
Advances in Radio Science, 2012 The application of imaging radar to microwave level gauging represents a prospect of increasing the reliability of target detection. The aperture size of the used sensor determines the underlying azimuthal resolution.
S. Kolb, R. Stolle
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Precise Ambiguity Performance Evaluation for Spaceborne SAR with Diverse Waveforms
Remote Sensing, 2023 The ambiguity suppression is a technical challenge for the present generation of spaceborne synthetic aperture radar (SAR) systems since this kind of suppression does not take the high spatial resolution and wide coverage into account simultaneously. The
Guodong Jin +7 more
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1T‐to‐2H Phase Evolution During Epitaxial Growth of Transition Metal Dichalcogenides
Advanced Materials, EarlyView.During MOCVD growth of MoS2 and WSe2, a transient metallic 1T phase emerges in early, edge‐rich, chalcogen‐deficient domains and declines as the films ultimately coalesce as 2H material. Together, experiments and ReaxFF simulations link domain size, edge stoichiometry, and vacancies to this evolution.
Andrew R. Graves +8 more
wiley +1 more source