Results 1 to 10 of about 207,009 (229)
Motion Phase Compensation Methods for Azimuth Ambiguity Suppression in HRWS SAR [PDF]
Remote Sensing, 2021 The azimuth multi-channel synthetic aperture radar (SAR) is widely used in marine observation, because of its excellent imaging ability of high-resolution and wide-swath (HRWS) signals.
Junying Yang +4 more
doaj +3 more sources
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022 In this article, an azimuth ambiguity suppression method based on ambiguity area imaging and detection is proposed, which is suitable for various imaging modes such as strip, spot, and multichannel modes.
Xiaolan Qiu, Xuejiao Wen
exaly +5 more sources
An Azimuth Ambiguity Suppression Method for SAR Based on Time-Frequency Joint Analysis
Remote SensingAzimuth ambiguity caused by spectral aliasing severely degrades the quality of Synthetic Aperture Radar (SAR) images. To suppress azimuth ambiguity while preserving image details as much as possible, this paper proposes an azimuth ambiguity suppression ...
Ze Yu, Xianxun Yao, Jindong Yu
exaly +4 more sources
Remote Sensing, 2020 Hybrid quadrature polarimetric (hybrid quad-pol) synthetic aperture radar (SAR) is proposed as a potential candidate for the full-polarimetric SAR mode. It allows balanced range ambiguity performance and simplified system structure.
Pengfei Zhao, Dacheng Liu, Robert Wang
exaly +4 more sources
Accurate Reconstruction and Suppression for Azimuth Ambiguities in Spaceborne Stripmap SAR Images [PDF]
IEEE Geoscience and Remote Sensing Letters, 2017 In this letter, an accurate mathematical model for azimuth ambiguity in stripmap synthetic aperture radar (SAR) images is first constructed, with an azimuth ambiguity factor (AAF) defined as the residual amplitude and phase terms of ambiguities. Next, a novel framework for reconstructing and suppressing azimuth ambiguity is proposed based on the ...
Chanika Sukawattanavijit +2 more
exaly +6 more sources
Impact of Azimuth Ambiguities on Interferometric Performance [PDF]
IEEE Geoscience and Remote Sensing Letters, 2012 The impact of azimuth ambiguities on interferometric performance in terms of phase bias and standard deviation of the interferometric phase is analyzed, resorting to the interferogram statistics for jointly circular Gaussian processes. The theoretical results are validated through simulation and compared with measurements on a TanDEM-X interferogram ...
Michelangelo Villano, Gerhard Krieger
exaly +3 more sources
Azimuth Phase Coding by Up and Down Chirp Modulation for Range Ambiguity Suppression
IEEE Access, 2019 High range ambiguity level will impair the spaceborne SAR image quality and hamper following SAR image applications. The range ambiguity suppression effect of the up and down chirp modulation on spaceborne SAR images is analyzed in this paper.
Weixian Tan, Wei Xu, Pingping Huang
exaly +3 more sources
Remote Sensing, 2021 Azimuth ambiguities, or ghosts on SAR images, represent one of the main obstacles for SAR applications involving coastal monitoring activities such as ship detection.
Joong-Sun Won
exaly +3 more sources
Remote Sensing, 2021 Hybrid and ±π/4 quadrature-polarimetric (quad-pol) synthetic aperture radar (SAR) systems operating from space can obtain all polarimetric components simultaneously but suffer from severe azimuth ambiguities in the cross-polarized (cross-pol) measurement
Pengfei Zhao +4 more
doaj +2 more sources
Remote Sensing, 2021 Quadrature-polarimetric synthetic aperture radar (quad-pol SAR) has extensive applications, including climate zones classification, extraction of surface roughness, soil moisture mapping, moving target indication, and rice mapping.
Yanyan Zhang +5 more
doaj +1 more source