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An Advanced Azimuth Ambiguity Suppression Scheme for Azimuth Multichannel SAR System
IEEE Geoscience and Remote Sensing LettersRobert Wang, Pingping Lu, Yonghua Cai
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Azimuth Ambiguity Suppression for SAR via Variable PRF and Complex Image Deconvolution
IEEE Geoscience and Remote Sensing Letters, 2023Boyuan Dong, Zhaoxi Chen
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IEEE Transactions on Geoscience and Remote Sensing, 2018
Azimuth ambiguity may introduce false targets into synthetic aperture radar images, particularly likely in inshore and oceanic observation. To suppress the azimuth ambiguities for any acquisition mode, a new model is developed to describe the impact of spatially variant azimuth antenna pattern weighting on azimuth ambiguities.
Peng Xiao, Chunsheng Li, Ze Yu
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Azimuth ambiguity may introduce false targets into synthetic aperture radar images, particularly likely in inshore and oceanic observation. To suppress the azimuth ambiguities for any acquisition mode, a new model is developed to describe the impact of spatially variant azimuth antenna pattern weighting on azimuth ambiguities.
Peng Xiao, Chunsheng Li, Ze Yu
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Azimuth Ambiguity Suppression for Azimuth Multichannel SAR Based on Subband Rearrangement
IEEE Transactions on Aerospace and Electronic SystemsZe Yu, Yukun Guo, Xianxun Yao
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Azimuth Ambiguity Detection and Suppression in SAR Images
IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019We propose a novel SAR azimuth ambiguity suppression method. The proposed method is a post process for a SAR image; namely, it does not require any modification to the SAR image formation process nor the SAR system design. Noting that the azimuth ambiguity is blurred in the SAR image, the proposed algorithm refocuses the image to focus the azimuth ...
Noboru Oishi, Kei Suwa
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Suppression of Azimuth Ambiguities with Constellation of Micro-satellites
2006 CIE International Conference on Radar, 2006To achieve wide-swath and full azimuth resolution in space-borne Synthetic Aperture Radar (SAR), a space-borne radar usually utilizes low Pulse Repetition Frequency (PRF) with a small aperture in azimuth. Consequently, the azimuth ambiguities are inevitable.
Wei Jing, Mengdao Xing, Zheng Bao
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Azimuth Ambiguity Suppression for Multichannel Geosynchronous Spaceborne-Airborne Bistatic SAR
IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018Due to the high altitude illuminator and the separation of the receivers and transmitter, Geosynchronous (GEO) spaceborne-airborne bistatic SAR (GEO BiSAR) is more flexible and accessible in remote sensing applications. However, by introducing a high speed airborne platform as receiver, azimuth spectrum aliasing occurs. In order to suppress the azimuth
Hongyang An +5 more
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Suppressing the azimuth ambiguities in synthetic aperture radar images
IEEE Transactions on Geoscience and Remote Sensing, 1993A method for removing the azimuth ambiguities from synthetic aperture radar (SAR) images is proposed. The basic idea is to generate a two-dimensional reference function for SAR processing which provides, in addition to the matched filtering for the unaliased part of the received signal, the deconvolution of the azimuth ambiguities.
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Azimuth ambiguity suppression for spaceborne SAR based on PRF micro-variation
2013 IEEE International Geoscience and Remote Sensing Symposium - IGARSS, 2013Spaceborne synthetic aperture radar (SAR) has been proved highly significant for remote sensing of the Earth. The image quality is constrained by the system design and the image processing technology, azimuth ambiguity is one of the most important factors.
Min Liu, Ze Yu 0002, Chunsheng Li
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Azimuth ambiguity suppression based on minimum mean square error estimation
2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2015An innovative algorithm to suppress the strong azimuth ambiguity in single-look complex (SLC) synthetic aperture radar (SAR) images is presented. The basic idea is to construct a subspace with low ambiguous power and project the original image to the aforementioned subspace to suppress the azimuth ambiguity by the minimum mean square error estimation ...
Youming Wu +3 more
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