A SAR imaging method based on generalized minimax-concave penalty
Sign Up to like & getrecommendations! Published in 2018 at "Science China Information Sciences"
DOI: 10.1007/s11432-018-9464-4
Abstract: Dear editor, Sparse signal processing offers a framework for synthetic aperture radar (SAR) imaging [1, 2]. As an efficient tool in sparse signal processing, L1 minimization is often used in the reconstruction of SAR images.… read more here.
Keywords: minimax concave; sar imaging; minimization; penalty ... See more keywords
A novel Scan SAR imaging method for maritime surveillance via Lp regularization
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Remote Sensing"
DOI: 10.1080/01431161.2017.1382744
Abstract: ABSTRACT In this article, a novel Scan mode synthetic aperture radar (SAR) imaging method for maritime surveillance is presented. Conventional Scan SAR is generally operated with severe azimuth resolution loss in order to cover a… read more here.
Keywords: sar imaging; imaging method; regularization; scan sar ... See more keywords
Fast Compressive Sensing-Based SAR Imaging Integrated With Motion Compensation
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Access"
DOI: 10.1109/access.2019.2911696
Abstract: Recently, compressive sensing (CS) has been applied in synthetic aperture radar (SAR) imaging, which is increasingly in the focus of study and shows great potential. In CS-based SAR imaging, motion errors of the moving platform… read more here.
Keywords: sar imaging; based sar; integrated motion; motion compensation ... See more keywords
Study on Precise Satellite Attitude Maneuvering Strategy for Ultrahigh Resolution Spaceborne SAR Imaging
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Access"
DOI: 10.1109/access.2021.3111193
Abstract: For future ultrahigh resolution spaceborne synthetic aperture radar (SAR), it requires the antenna beam capable of large angle scanning in azimuth to increase the azimuth bandwidth and to improve the resolution consequently. To achieve this… read more here.
Keywords: sar; resolution; sar imaging; resolution spaceborne ... See more keywords
Efficient 3-D Near-Field MIMO-SAR Imaging for Irregular Scanning Geometries
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3145370
Abstract: In this article, we introduce a novel algorithm for efficient near-field synthetic aperture radar (SAR) imaging for irregular scanning geometries. With the emergence of fifth-generation (5G) millimeter-wave (mmWave) devices, near-field SAR imaging is no longer… read more here.
Keywords: sar; irregular scanning; scanning geometries; sar imaging ... See more keywords
Least-Square-Based Nonuniform Borehole SAR Imaging for Subsurface Sensing
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing"
DOI: 10.1109/jstars.2018.2813338
Abstract: This paper presents the least-square-based nonuniform borehole synthetic aperture radar (SAR) imaging method with cosine accuracy factor for subsurface sensing. Based on the Stolt migration, the frequency-wavenumber spectrum of nonuniform data is efficiently approximated in… read more here.
Keywords: sar imaging; method; least square; proposed method ... See more keywords
Extended Autofocus Backprojection Algorithm for Low-Frequency SAR Imaging
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Geoscience and Remote Sensing Letters"
DOI: 10.1109/lgrs.2017.2711005
Abstract: Since the trajectory deviations of a radar platform cause serious phase errors that degrade the focusing quality of synthetic aperture radar (SAR) imagery, an autofocus method is very important for high-resolution airborne SAR imaging. In… read more here.
Keywords: autofocus backprojection; extended autofocus; sar imaging; frequency sar ... See more keywords
Sidelobe Control for Bistatic SAR Imaging
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DOI: 10.1109/lgrs.2021.3099174
Abstract: This letter presents coherent and incoherent nonlinear apodization methods for bistatic synthetic aperture radar (SAR) imaging. The methods are developed on the principle of nonlinear apodization for monostatic SAR imaging and a $\omega \,\,-\,\,k$ relationship… read more here.
Keywords: sar imaging; apodization methods; bistatic sar; sidelobe ... See more keywords
FMCW SAR Imaging Algorithm of Sliding Spotlight Mode
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Geoscience and Remote Sensing Letters"
DOI: 10.1109/lgrs.2021.3119848
Abstract: Under the frequency-modulated continuous wave (FMCW) system, the “stop-and-go” echo model of traditional pulse synthetic aperture radar (SAR) is no longer applicable. The range-azimuth coupling term introduced by fast time going term cannot be ignored,… read more here.
Keywords: imaging algorithm; sar imaging; fmcw sar; sliding spotlight ... See more keywords
SAR Imaging and Despeckling Based on Sparse, Low-Rank, and Deep CNN Priors
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DOI: 10.1109/lgrs.2021.3131201
Abstract: Synthetic aperture radar (SAR) generally suffers from enormous strains from large quantities of sampling data and serious interferences from the speckle noise. This letter proposes a novel deep network to address these problems. By utilizing… read more here.
Keywords: sparse low; imaging despeckling; low rank; sar imaging ... See more keywords
SAR Imaging From Azimuth Missing Raw Data via Sparsity Adaptive StOMP
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Geoscience and Remote Sensing Letters"
DOI: 10.1109/lgrs.2021.3132499
Abstract: Synthetic aperture radar (SAR) raw data missing occurs when the radar is interrupted for various reasons during the work. Different solutions have been proposed to this problem. In recent years, with the continuous deepening of… read more here.
Keywords: sar imaging; missing data; sparsity; raw data ... See more keywords