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Computer Science, Information Systems
Hua Lin, Chao Zeng, Hai Zhang, Ge Jiang
Summary: This paper proposes a novel method HPCT for estimating the motion parameters of low-observable high-speed maneuvering targets, utilizing Hough transform and polynomial Chirplet transform for parameter correction and compensation.
Article
Geochemistry & Geophysics
Penghui Huang, Xiang-Gen Xia, Muyang Zhan, Xingzhao Liu, Guisheng Liao, Xue Jiang
Summary: A novel ISAR imaging algorithm is proposed in this article for maneuvering targets with moderate reflection intensity, effectively handling the impact of target motion on ISAR image quality, and the effectiveness and superiority of the algorithm are validated through the imaging results of simulated and real measured data.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
Article
Geochemistry & Geophysics
Dong You, Guang-Cai Sun, Mengdao Xing, Yachao Li, Zheng Bao
Summary: This letter proposes a new method for focusing ground maneuvering targets and estimating motion parameters using a synthetic aperture radar system. The method utilizes techniques such as Hough transform and adaptive polynomial Fourier transform to estimate and compensate for the motion parameters, resulting in successful focusing of the target.
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
(2022)
Article
Engineering, Aerospace
Qilei Zhang, Yongsheng Zhang, Bin Sun, Zhen Dong, Lei Yu
Summary: This article proposes a long-time coherent integration (LTCI) algorithm based on subband keystone transform (SKT) and extended Lv's distribution (ELVD) to estimate motion parameters and reconstruct high-SNR high-resolution range profile (HRRP) in low SNR conditions. The effectiveness of the proposed algorithm is confirmed by simulation examples and experimental data.
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
(2023)
Article
Engineering, Aerospace
Ammar Ahmed, Yimin D. Zhang, Braham Himed
Summary: This article focuses on the challenging task of target altitude estimation in over-the-horizon radar and proposes a method for joint estimation of ionosphere height and target altitude, enabling direct estimation of target altitude and ionosphere parameters.
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
(2022)
Article
Engineering, Electrical & Electronic
Zhi Sun, Xiaolong Li, Guolong Cui, Wei Yi, Lingjiang Kong
Summary: This paper proposes a novel fast approach for reliable detection and estimation of maneuvering radar targets with complex motions, addressing issues of range cell migration and Doppler frequency spread. Through a series of transformations and estimation processes, it achieves a balance between computational burden and detection/estimation capabilities, while eliminating the effects of blind speed side-lobes and improving overall performance.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2021)
Article
Geochemistry & Geophysics
Jianbing Xiang, Xiaolei Lv, Xikai Fu, Ye Yun
Summary: This article proposes a novel detection and estimation algorithm based on adaptive sparse modified-Lv's transform for effectively analyzing radar echo signals from marine targets with micromotion in a complex marine environment. The algorithm demonstrates good performance and robustness, effectively reducing false alarms and suppressing cross terms for multitarget detection. Experiment results show that it can effectively detect and estimate multitargets under heavy sea clutter and low signal-to-clutter ratio background.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
Article
Geochemistry & Geophysics
Jingtao Ma, Jinpei Yu, Guang Liang, Siyue Sun, Xinglong Jiang, Penghui Huang
Summary: A new method is proposed in this letter to address the issue of invalid target parameter estimation caused by irregular signal sampling in a new-style radar. The method utilizes random pulse resampling and coherent integration to reconstruct the signal and eliminate residual coupling between range and azimuth.
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
(2022)
Article
Environmental Sciences
Mingming Tian, Guisheng Liao, Shengqi Zhu, Xiongpeng He, Yongjun Liu, Yunpeng Li
Summary: The proposed algorithm in this paper efficiently solves the issues of defocused images of ground maneuvering targets in a SAR system by using DPT, KT, and MFP techniques. It effectively addresses problems such as Doppler ambiguity, high-order RM, and DFM, resulting in well-refocused images of maneuvering targets with good motion parameter estimation precision.
Article
Computer Science, Information Systems
Yimin D. Zhang, Ammar Ahmed, Braham Himed
Summary: This paper proposes an improved method for altitude estimation of aircraft targets using Doppler signatures. The method enhances the resolution of multipath Doppler signatures and considers the impact of ionospheric layer motion on target parameter estimation. By applying a frequency focused transform and a high-resolution spectrum estimation technique, the proposed method achieves accurate estimation with reduced complexity. Simulation results confirm its effectiveness.
Article
Environmental Sciences
Wenhao Zhang, Yajun Li, Zhengqi Zheng, Lin Xu, Zhicheng Wang
Summary: High frequency radar has a wide monitoring range and low range resolution, which can contain multiple targets or outlier interference phenomena. The key to multi-target detection in background clutter is determining the attributes of targets or outliers. This paper proposes a new method for multi-target detection based on the ordered statistics constant false alarm detector (OS-CFAR), utilizing the sparse characteristics of the target and introducing regularization processing to eliminate interfering targets. Simulation and measured data demonstrate the effectiveness of the algorithm in counteracting interference and providing reliable target detection.
Article
Engineering, Electrical & Electronic
Ziying Hu, Wei Wang, Fuwang Dong
Summary: In this study, an accurate imaging and motion estimation method based on multiple-input-multiple-out (MIMO) radar is proposed to tackle the image deterioration problem in radar imaging for ship target. By establishing a multidimensional signal model and employing a preprocessing strategy based on the space-time adaptive processing (STAP) theory, sea clutter interference can be effectively reduced.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Geochemistry & Geophysics
Xin Li, Libing Huang, Shunsheng Zhang, Wen-Qin Wang
Summary: This letter proposes two long-time coherent integration algorithms with low computational cost for target detection by utilizing phase compensation and time-reversal transform. Simulations verify the effectiveness of the algorithms and show that they have much lower computational burden compared to existing methods such as GRFT and GDKT.
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
(2022)
Article
Geochemistry & Geophysics
Mingxing Wang, Xiaolong Li, Zerui Zhang, Guolong Cui, Tat Soon Yeo
Summary: This article explores coherent integration and parameter estimation in high-speed target detection using bistatic MIMO radar. It proposes a multichannel coherent integration methodology in the RFT domain to overcome range migration and phase and envelope differences. The proposed method is effective in detecting targets at low SNRs.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2023)
Article
Geochemistry & Geophysics
Jiang Qian, Shaoyin Huang, Lu Wang, Guoan Bi, Xiaobo Yang
Summary: In this paper, we propose a new super-resolution inverse synthetic aperture radar (ISAR) imaging method based on deep-learning-assisted time-frequency analysis (TFA). The linear TFA assisted by the pretrained network can achieve sharply focused and denoised target image with super-resolution. Experimental results demonstrate the superiority of the proposed method over traditional ones.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
