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Environmental Sciences
Jingyu Cong, Xianpeng Wang, Xiang Lan, Mengxing Huang, Liangtian Wan
Summary: This paper proposes a fast joint direction-of-arrival and range estimation framework using a deep super-resolution neural network to accelerate radar imaging process, with simulations and experiments validating the computational efficiency and effectiveness of the framework.
Article
Geochemistry & Geophysics
Qing Yang, Zhongyu Li, Junao Li, Yuping Xiao, Hongyang An, Junjie Wu, Yiming Pi, Jianyu Yang
Summary: Bistatic synthetic aperture radar (BiSAR) is gaining more attention due to its forward-looking imaging capability and configuration flexibility. For BiSAR moving target imaging (MTIm), the noncooperative motion of the target causes unknown range cell migration (RCM) and additional phase modulation. To address these challenges, an optimal polar format refocusing method is proposed for BiSAR MTIm.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
Article
Engineering, Electrical & Electronic
Mashud Hyder, Kaushik Mahata, Shah Mahdi Hasan
Summary: Frequency diverse array (FDA) radar transmits different frequencies from different antenna elements, continuously changing the orientation of the beam and making it easier to scan surrounding space. It can detect the range and direction of targets simultaneously, with resolution depending on array geometry. A new signal transmission scheme for bistatic FDA radar is proposed in this study, showing improved detection and localization performance compared to existing methods. The method produces initial estimates using a fast algorithm, with variances close to the Cramer Rao bound.
DIGITAL SIGNAL PROCESSING
(2021)
Article
Computer Science, Information Systems
Fangqing Wen, Junpeng Shi, Guan Gui, Haris Gacanin, Octavia A. Dobre
Summary: This article proposes a novel framework for the three-dimensional (3-D) positioning of unmanned aerial vehicles (UAVs) using a bistatic multiple-input multiple-output (MIMO) radar to measure the two-dimensional (2-D) angle-of-departure (2D-AoD) and 2D-AoA. The proposed framework is computationally friendly and capable of positioning anonymous UAVs.
IEEE INTERNET OF THINGS JOURNAL
(2023)
Article
Environmental Sciences
Yuehao Guo, Xianpeng Wang, Jinmei Shi, Lu Sun, Xiang Lan
Summary: For bistatic FDA-MIMO radar, a real-valued parameter estimation algorithm based on high-order singular value decomposition is proposed to tackle target parameter estimation. The algorithm utilizes subarray division, forward-backward averaging, and unitary transformation techniques to decouple direction of departure (DOD) and range information. The algorithm also reduces the dimension of spatial spectrum and eliminates phase ambiguity by using the frequency increment between subarrays.
Article
Chemistry, Analytical
Zhiyuan You, Guoping Hu, Hao Zhou, Guimei Zheng
Summary: Based on the low-rank matrix reconstruction theory, this paper proposes a joint DOD and DOA estimation method for coherent targets using a bistatic coprime array MIMO radar. The proposed method effectively improves the angular resolution and degree of freedom for coherent signals by extending the array aperture with virtual sensor interpolation, generating the covariance matrix, reconstructing the Toeplitz matrix, and establishing a matrix optimization recovery model. The automatic pairing of DOD and DOA is achieved using the reduced dimension multiple signal classification algorithm. However, the effectiveness of this method is limited by the signal-to-noise ratio.
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
Tong Ding, Juan Zhang, Shiyang Tang, Linrang Zhang, Yachao Li
Summary: A large time-bandwidth product bistatic radar is advantageous for high-resolution target detection and motion parameter estimation, but it introduces scale factor and inner-pulse Doppler in radar echoes when detecting high-speed targets. This paper proposes an iterative coherent integration method based on a precise echo signal model to achieve accurate motion parameter estimation and target detection in a space-air-based bistatic radar system.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
Article
Engineering, Aerospace
Michael Gottinger, Peter Gulden, Martin Vossiek
Summary: This article presents a novel concept and signal processing scheme for full-duplex radar systems to address phase noise issues and achieve coherent measurements in a bistatic setup. Experimental results show that this new concept enables bistatic measurements with the same sensitivity and performance as homodyne radar systems.
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
(2021)
Article
Engineering, Electrical & Electronic
Oded Bialer, Amnon Jonas, Tom Tirer
Summary: This paper proposes a novel code optimization method to reduce the side-lobes of the radar's ambiguity function, improving the probability of detection in the case of multiple targets. By analyzing the ambiguity function side-lobes and developing an optimization algorithm, the optimized code achieves an improvement in side-lobes attenuation and probability of detection compared to reference codes.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Sheng Chen, Yongbo Zhao, Yili Hu, Xiaojiao Pang
Summary: This paper discusses beamspace target height estimation for bistatic multiple-input multiple-output (MIMO) radars. The proposed three-dimensional beamspace maximum likelihood data fusion (3D-BMLF) algorithm provides a low computational burden and good estimation accuracy for target height estimation. It is suitable for engineering applications in a bistatic MIMO radar.
DIGITAL SIGNAL PROCESSING
(2022)
Article
Engineering, Biomedical
Abudusaimi Abuduaini, Nobuyuki Shiraki, Naoki Honma, Takeshi Nakayama, Shoichi Iizuka
Summary: This article presents a frequency error elimination technique suitable for unsynchronized bistatic MIMO radar and evaluates its effectiveness through experiments.
IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS
(2022)
Article
Engineering, Electrical & Electronic
Yibin Liu, Chunyang Wang, Guimei Zheng, Yuwei Song
Summary: This paper investigates the joint estimation problem of direction of departure, direction of arrival, and range for bistatic meter-wave FDA-MIMO radar. It proposes a reduced dimension MUSIC algorithm and provides the computational complexity analysis and Cramer Rao bound derivation. The simulation results demonstrate the effectiveness of the proposed algorithms.
DIGITAL SIGNAL PROCESSING
(2022)
Article
Geochemistry & Geophysics
Jun Pan, Zhi-Kang Ni, Cheng Shi, Zhijie Zheng, Shengbo Ye, Guangyou Fang
Summary: This study proposes a motion compensation method based on multiframe data fusion for correcting the echo of through-wall moving targets. By establishing a geometric model and using geometric solution, the compensated signal is obtained. Experimental results show that this method can achieve good focus images and reduce positioning errors.
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Haobo Zhang, Hongliang Zhang, Boya Di, Kaigui Bian, Zhu Han, Lingyang Song
Summary: This paper proposes a MetaRadar scheme using reconfigurable intelligent surfaces (RIS) to improve the detection accuracy of radar systems by customizing channel conditions through adjusting the phase shifts of RIS. A waveform and phase shift optimization (WPSO) algorithm is designed to effectively solve the multi-target detection problem, and the performance of the proposed MetaRadar scheme is analyzed theoretically. Simulation results show that the detection performance of the MetaRadar scheme is significantly better than that of the traditional radar schemes.
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
(2022)
