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Robust Clutter Suppression and Ground Moving Target Imaging Method for a Multichannel SAR with High-Squint Angle Mounted on Hypersonic Vehicle

Jiusheng Han, Yunhe Cao, Tat-Soon Yeo, Fengfei Wang
2021 Remote Sensing  
This paper investigates a robust clutter suppression and detection of ground moving target (GMT) imaging method for a multichannel synthetic aperture radar (MC-SAR) with high-squint angle mounted on hypersonic  ...  and range cell migration (RCM).  ...  Data Availability Statement: The data presented in this study are available on request from the corresponding author. Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs13112051 fatcat:retw57trmzhvvhx4uxtbxsxdra

Robust GMTI Scheme for Highly Squinted Hypersonic Vehicle-Borne Multichannel SAR in Dive Mode

Jiusheng Han, Yunhe Cao, Wenhua Wu, Yang Wang, Tat-Soon Yeo, Shuai Liu, Fengfei Wang
2021 Remote Sensing  
GMTI scheme for the highly squinted HSV-MC-SAR in dive mode, is novel.  ...  Then, based on the proposed model, a robust GMTI scheme is derived in detail, paying particular attention to Doppler ambiguity arising from the high-speed and high-resolution wide-swath.  ...  In Section 2, an IERM is introduced. A robust GMTI scheme for the highly squinted HSV-MC-SAR with a dive orbit is derived in detail in Section 3.  ... 
doi:10.3390/rs13214431 fatcat:m6xkbn6xqvfsvfa2ekmgrruokm

Introduction to the Issue on Advanced Signal Processing Techniques for Radar Applications

Maria S. Greco, Yuri Abramovich, Jean-Philippe Ovarlez, Hongbin Li, Xiaopeng Yang
2015 IEEE Journal on Selected Topics in Signal Processing  
The new beamformer allows the suppression of ambiguities in multiple sets of received undersampled SAR data in the cross-range direction and reconstruction of the Doppler spectrum to form a single unambiguous  ...  In "A superresolution wide null beamformer for undersampled signal reconstruction in SIMO SAR" by K. Mak, A. Manikas, a superresolution beamformer is proposed.  ... 
doi:10.1109/jstsp.2015.2497458 fatcat:7tssxg3xw5g7pnxku5zjahhg7e

A HYBRID MULTICHANNEL PROCESSING METHOD FOR SPACEBORNE HYBRID PHASED-MIMO SAR WITH APPLICATION TO MULTI-DIRECTION SWATH IMAGING

Lele Zhang, Dianren Chen
2015 Progress in Electromagnetics Research B  
The method is optimal because it is a combination of two-dimension (2-D) advanced digital beamforming (DBF) technology and multichannel pre-filter technology for highresolution wide-swath SAR signal processing  ...  ambiguity and azimuth ambiguity deeply.  ...  ACKNOWLEDGMENT The authors would like to thank the editor and anonymous reviewers for their valuable time, comments, and suggestions to improve the quality and readability of this paper.  ... 
doi:10.2528/pierb15072705 fatcat:mm7whnmwbbalfntsjq2brai27i

Multidimensional Waveform Encoding: A New Digital Beamforming Technique for Synthetic Aperture Radar Remote Sensing

Gerhard Krieger, Nicolas Gebert, Alberto Moreira
2008 IEEE Transactions on Geoscience and Remote Sensing  
Index Terms-Adaptive radar, along-track interferometry (ATI), ambiguity reduction, digital beamforming, displaced phase centre antenna (DPCA), ground moving target indication (GMTI), high-resolution wide-swath  ...  This paper introduces the innovative concept of multidimensional waveform encoding for spaceborne synthetic aperture radar (SAR).  ...  ACKNOWLEDGMENT The authors would like to thank the anonymous reviewers for their valuable comments and suggestions to improve the readability of this paper.  ... 
doi:10.1109/tgrs.2007.905974 fatcat:ovmmog5dkngtjjoefu6ljc4psu

Ultra Wide Swath Imaging with Multi-Channel ScanSAR

Nicolas Gebert, Gerhard Krieger, Marwan Younis, Federica Bordoni, Alberto Moreira
2008 IGARSS 2008 - 2008 IEEE International Geoscience and Remote Sensing Symposium  
A possible realization based on the combination of multi-aperture SAR signal reconstruction in azimuth with digital beamforming on receive in elevation is given in [1].  ...  Finally, first results for a multi-channel TOPS system are presented and an optimized TOPS processing approach is introduced.  ...  Optimized TOPS Squinted Processing In conventional operation, the burst length in TOPS was chosen to ensure an overall bandwidth equal to the band N·PRF covered by the reconstruction filters (cf.  ... 
doi:10.1109/igarss.2008.4780017 dblp:conf/igarss/GebertKYBM08 fatcat:arxzgoncifhl3dibyeuqnk2jeu

A Novel Time-Domain Frequency Diverse Array HRWS Imaging Scheme for Spotlight SAR

Yuhao Wen, Zhimin Zhang, Zhen Chen, Jinsong Qiu, Mingshan Ren, Xiangrui Meng
2022 Remote Sensing  
Generally in spotlight mode, scatterers dispersively distributed in azimuth have different Doppler histories, in which the range ambiguity resolution for strip-map SAR fails.  ...  This introduces a range-angle-dependence to the transmission steering vector, which is exploited for range ambiguity resolution in strip-map SAR.  ...  To minimize the ambiguity to signal ratio of the p 1 -th range region, the beamforming weighting factors can be obtained by solving the following optimization problem:    min w p 1 w p 1 H R −p 1 w  ... 
doi:10.3390/rs14051085 fatcat:whpvfn5z35bbxhcozpyrpqhe6u

Hybrid Phased-MIMO SAR: Mode Design and Performance Analysis

Lele Zhang, Dianren Chen
2016 International Journal of Signal Processing, Image Processing and Pattern Recognition  
However, multidirectional scanning imaging will produce overlapped echoes and ambiguities on receive, then this paper presents the advanced processing scheme based on two-dimension (2-D) digital beamforming  ...  This means that such systems open up an entirely new field of SAR operation and introduce a new de gree of freedom in SAR system design.  ...  Acknowledgments The authors would like to thank the editor and anonymous reviewers for their valuable time, comments, and suggestions to improve the quality and readability of this paper.  ... 
doi:10.14257/ijsip.2016.9.9.06 fatcat:5cbfit7zarfxbp34srctdsulee

Digital Beamforming on Receive: Techniques and Optimization Strategies for High-Resolution Wide-Swath SAR Imaging

Nicolas Gebert, Gerhard Krieger, Alberto Moreira
2009 IEEE Transactions on Aerospace and Electronic Systems  
In this context, the analytic expressions for both the residual ambiguities and the SNR scaling factor are generalized to cascaded beamforming networks.  ...  The impact of Doppler aliasing is investigated and an analytic expression for the residual azimuth ambiguities is derived.  ...  Besides, alternative concepts not directly building on conventional SAR are brought up, as a squinted SAR configuration in combination with beamforming [8] .  ... 
doi:10.1109/taes.2009.5089542 fatcat:zhjycr7vnzdr5fksiw2pqaedoe

DBF Processing in Range-Doppler Domain for MWE SAR Waveform Separation Based on Digital Array-Fed Reflector Antenna

Shenjing Wang, Yifan Sun, Feng He, Zaoyu Sun, Pengcheng Li, Zhen Dong
2020 Remote Sensing  
Therefore, we propose a DBF method which is processed in range-Doppler domain. The method enables waveform separation without ambiguity at the receiver.  ...  A combination of multidimensional waveform encoding (MWE) technique and digital beamforming (DBF) technology at the receiving end can greatly improve the MIMO SAR system performance, especially ambiguity  ...  Geometric model for Range-Doppler domain digital beamforming (DBF).  ... 
doi:10.3390/rs12193161 fatcat:f4dhnrs5orfwtfag7esmna67gy

An Overview of Advances in Signal Processing Techniques for Classical and Quantum Wideband Synthetic Apertures [article]

Peter Vouras, Kumar Vijay Mishra, Alexandra Artusio-Glimpse, Samuel Pinilla, Angeliki Xenaki, David W. Griffith, Karen Egiazarian
2022 arXiv   pre-print
This guide is intended to aid newcomers in navigating the most critical issues in SA analysis and further supports the development of new theories in the field.  ...  In general, new techniques and setups are required to harness the potential of wide SAs in space and bandwidth.  ...  Official contribution of the U.S. government; not subject to copyright in the United States.  ... 
arXiv:2205.05602v1 fatcat:74vr5wq6zjcjdf7wtitpbbfquu

Antenna Beampattern with Range Null Control Using Weighted Frequency Diverese Array

Yi Liao, Hu Tang, Xiaolong Chen, Wen-Qin Wang, Mengdao Xing, Zhi Zheng, Jian Wang, Qing Huo Liu
2020 IEEE Access  
To address this problem, this paper proposes a weight designing method to control the nulls distribution among range bins in the mainbeam.  ...  However, current publications pay more attention to the dot-shaped beam forming, which is not suitable for the rangedependent jamming signal suppression.  ...  Additionally, the range ambiguity problem often appears in the spaceborne SAR imaging, especially for the high-resolution wideswath case.  ... 
doi:10.1109/access.2020.2979942 fatcat:na2ytawhg5co5ou52hdzhu4lbi

Radar and Sonar Imaging and Processing (2nd Edition)

Andrzej Stateczny, Witold Kazimierski, Krzysztof Kulpa
2021 Remote Sensing  
The sequence of articles included in the SI deal with a broad profile of aspects of the use of radar and sonar images in line with the latest scientific trends, in which the latest developments in science  ...  The 14 papers (from 29 submitted) published in the Special Issue "Radar and Sonar Imaging Processing (2nd Edition)" highlight a variety of topics related to remote sensing with radar and sonar sensors.  ...  Acknowledgments: We would like to thank all the authors who contributed to the Special Issue and the staff in the editorial office.  ... 
doi:10.3390/rs13224656 fatcat:qvxifyoi6fev3ejsbz5hkrcv7a

Curvilinear Flight Synthetic Aperture Radar (CF-SAR): Principles, Methods, Applications, Challenges, and Trends

Zhanye Chen, Shiyang Tang, Yi Ren, Ping Guo, Yu Zhou, Yan Huang, Jun Wan, Linrang Zhang
2022 Remote Sensing  
Finally, the challenges faced by CF-SAR are summarized, and some future trends for the study of CF-SAR are explored.  ...  Hopefully, this paper will serve as a reference for SAR researchers/engineers and stimulate the future development and actual application of CF-SAR.  ...  Notably, this Doppler ambiguity contains Doppler center blur and Doppler spectrum ambiguity, as sketched in Figure 14 .  ... 
doi:10.3390/rs14132983 fatcat:f3tdvycgzjgqdbs5pwmd74kxdy

Sub-Nyquist SAR via Fourier Domain Range-Doppler Processing

Kfir Aberman, Yonina C. Eldar
2017 IEEE Transactions on Geoscience and Remote Sensing  
In this paper, we introduce a new algorithm, equivalent to the well-known Range-Doppler method, to process SAR data using the Fourier series coefficients of the raw signals.  ...  The proposed recovery algorithms form a new CS-SAR imaging method that can be applied to high-resolution SAR data acquired at sub-Nyquist rates in range and azimuth.  ...  ACKNOWLEDGMENT The authors would like to thank the anonymous reviewers for their constructive remarks, which helped improve the  ... 
doi:10.1109/tgrs.2017.2723620 fatcat:semuhrgncrckdej3vehh7sro2i
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