Results 21 to 30 of about 207,009 (229)
Range Ambiguity Suppression Approach for Quad-pol SAR Systems Based on Modified Azimuth Phase Coding
Leida xuebao, 2017 For conventional quadrature-polarimetric (quad-pol) Synthetic Aperture Radar (SAR) systems, as cross-polarized (cross-pol) channels are influenced by the strong co-polarized (co-pol) range ambiguous returns, the range ambiguity levels of cross ...
Zhu Xiaojing +4 more
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A spectroscopic method for the solution of the 180-deg azimuth ambiguity in magnetograms
The Astrophysical Journal, 1993 A spectroscopic method is proposed for removing the azimuth ambiguity intrinsically present in vector magnetograms. The method is based on the idea that the polarization observed in resonance lines (typically formed at the chromospheric level) depends not only on the magnetic field vector, but also on the anisotropy of the radiation field that is ...
Degl'Innocenti, Egidio +1 more
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IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingStaggered synthetic aperture radar (SAR) is compatible with quadrature-polarimetric (quad-pol) SAR, enabling ultrawide continuous swath quad-pol SAR imaging with fine azimuth resolution.
Ruizhen Song +4 more
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Compressed sensing using a non-uniformly sampled range-azimuth dictionary [PDF]
MATEC Web of Conferences, 2019 FM-bats are known to be able to sense the environment by echolocation. In this paper, assuming the objects in the environment can be characterized by a sparse representation of the echoes in range and azimuth, a compressed sensing algorithm using a range-
Yang Changsheng +3 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
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Remote SensingIn high-resolution and wide-swath (HRWS) synthetic aperture radar (SAR) imaging, the azimuth multi-channel technique effectively suppresses azimuth ambiguity, serving as a reliable approach for achieving wide-swath imaging.
Yihao Xu +4 more
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Analysis of the Azimuth Ambiguity and Imaging Area Restriction for Circular SAR Based on the Back-Projection Algorithm. [PDF]
Sensors (Basel), 2019 Circular synthetic aperture radar (CSAR) has a 360° observation capability on the central observation scenario. A typical way to process CSAR imaging is to cut data into small sub-apertures because most targets are only coherent at a very small ...
Du B +5 more
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AVOA technique for fracture characterization: resolving ambiguity [PDF]
Geofísica Internacional, 2008 A new computational technique of AVOA analysis (Amplitude Versus Offset and Azimuth) is developed which resolves an ambiguity in fracture-direction estimation.
T. Chichinina, V. Sabinin
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IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023 Multichannel spaceborne synthetic aperture radar (SAR) is a useful approach to overcome minimum antenna area constraint and achieve high-resolution and wide-swath imaging.
Pengnan Zheng +4 more
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Azimuth Unambiguity Suppression for Low-oversampled Staggered SAR Images
Leida xuebao, 2021 Low-oversampled staggered synthetic aperture radar can achieve continuously observed high-resolution and wide-swath imaging by utilizing the variable pulse repetition interval to distribute blind ranges.
Xingxing LIAO, Zhe LIU, Junjie WU
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