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Fan Zhong - IEEE Xplore Author Profile

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Millimeter-wave (mmWave) automotive multiple-input multiple-output forward looking synthetic aperture radar technology (FL-MIMO-SAR) can achieve high-resolution images for advanced driver assistance systems (ADAS). However, the conventional FL-MIMO-SAR imaging methods suffer from high sidelobe, noise interference, and the relatively low imaging resolution in the FL region. To tackle these challeng...Show More
Millimeter-wave (mmW) automotive radar imaging technology shows significant promise in advanced driver assistance systems (ADAS). Super-resolution imaging methods can be employed the limited aperture length of automotive radar to improve azimuth (angular) resolution. However, automotive radar images typically exhibit large dynamic range (LDR) and large scene (LS), leading to pay extensive computat...Show More
Reconstructing three-dimensional synthetic aperture radar (3D SAR) images from the sparsely sampled echo measurements holds significant importance in simplifying the system complexity and sensing costs. The conventional compressed sensing-based imaging algorithms address the problem by suspecting the sparsity of the imaging space, showing good reconstruction performance but failing to tackle the i...Show More
Sparse aperture inverse synthetic aperture radar (SA-ISAR) aims to reconstruct target images by undersampled data. Traditional algorithms are limited in their application scope and exhibit weak capabilities in reconstructing target details. To address these issues, an adaptive threshold sensing (ATS) sparse reconstruction algorithm based on alternating direction method of multiplier (ADMM), named ...Show More
Tomographic synthetic aperture radar (TomoSAR) shows great potential for high-quality 3-D mapping, especially in urban areas. As TomoSAR reconstruction methods advance into the deep learning (DL) era, current studies have demonstrated DL’s strengths in both precision and efficiency. However, for reconstructing urban areas with prominent spatial features from building structures, current studies fo...Show More
Synthetic aperture radar (SAR) can obtain high-resolution images without being affected by environmental visibility. The compressed sensing (CS) technique is considered to be a strong candidate for simplifying SAR system complexity and improving imaging quality. With CS, SAR imaging is addressed by optimizing an augmented object function with data fidelity and feature-oriented priors; however, it ...Show More
This article focuses on a reliable and high-resolution synthetic aperture radar (SAR) imaging algorithm for lightweight autonomous aerial vehicle (AAV)-borne video-SAR. By combining a spatiotemporal staggered sampling technique and a multiframe enhancement reconstruction network, the proposed spatiotemporal staggered projection algorithm can solve the contradiction between low data transmission ra...Show More
Concealed moving target imaging is an important task in the fields of autonomous driving, urban combat, city anti-terrorism, etc. However, existing radar imaging techniques mainly focus on line-of-sight (LOS) targets and struggle to sense non-line-of-sight (NLOS) moving targets. In this paper, a joint NLOS model and inverse synthetic aperture radar (ISAR) algorithm, dubbed corner motion target ima...Show More
Millimeter-wave (mmW) automotive synthetic aperture radar (Auto-SAR) technology holds significant promise for advanced driver assistance systems (ADASs). Sparse imaging methods can improve the quality of Auto-SAR images, such as suppressing sidelobes and noise. However, the $l_{1}$ convex regularization-based sparse imaging methods suffer from the bias estimation, which reduces the target amplit...Show More
Ship detection in synthetic aperture radar (SAR) remote sensing images is a fundamental yet challenging task in Earth observation and measurement. However, existing deep learning (DL)-based SAR ship detectors mostly struggle with unreasonable anchor assignment and limited localization quality, hindering the further accuracy increase of ship detection in SAR remote sensing images. To address the ab...Show More
Scattering diagnosis requires the spatial distribution of the target's scattering coefficient, which can be obtained through radar imaging, specifically 3-D array synthetic aperture radar, known for its high-quality, flexible measurements. Recent advancements in sparsity-based imaging methods have addressed traditional method limitations like limited resolution and interferences. However, they pre...Show More
In this study, we address the challenges associated with video synthetic aperture radar (Video SAR) shadow tracking, a technique used for continuous monitoring of ground moving targets. Due to challenges such as changes in shadow appearance, low contrast between shadow and background, and scene occlusion in Video SAR, existing methods often encounter extensive matching errors in the data associati...Show More
Due to the reduction of imaging accuracy caused by the approximations of signal models, traditional synthetic aperture radar (SAR) moving target motion parameter estimation methods based on frequency-domain imaging algorithms may suffer from the problem of accuracy reduction. To solve this problem, a novel moving target motion parameter estimation scheme is proposed for dual-channel SAR based on t...Show More
Effective ship detection in synthetic aperture radar (SAR) imagery is crucial for maritime safety and surveillance. Despite the advancements in deep learning for SAR ship detection, significant challenges remain, particularly in large scenes. These challenges are twofold: the detection of extremely small ships is often hindered by inadequate feature extraction, and the presence of inshore ships is...Show More
Frequency-modulated continuous wave (FMCW) radar is an excellent sensor; however, the widespread popularity and application of millimeter-wave (mmW) automotive radar, greatly increases the risk of mutual interference between vehicles, weakening the abilities of automotive radar to sense the environment. As a result, efficiently suppressing interference has been a challenge. To address this issue, ...Show More
The widespread application of frequency-modulated continuous-wave (FMCW) radars leads to a significant increase in the risk of mutual interference. Conventional compressed sensing (CS)-based interference mitigation methods are limited by large computational capacity, troublesome parameter settings, and inefficient data processing. The supervised deep learning approach can overcome the above challe...Show More
The regularization-based approaches offer promise in improving synthetic aperture radar (SAR) imaging quality while reducing system complexity. However, the widely applied $\ell _{1}$ regularization model is hindered by their hypothesis of inherent sparsity, causing unreal estimations of surface-like targets. Inspired by the edge-preserving property of total variation (TV), we propose a new comp...Show More
Spaceborne Synthetic Aperture Radar(SAR) can be mounted on space vehicles to collect information on the entire planet with all-day and all-weather imaging capacity. However, the spaceborne SAR sensor may suffer from severe interferences resulting in image degradation, which puts forward an urgent need for interference identification and mitigation. This paper proposes a high-precision interference...Show More
The Synthetic Aperture Radar (SAR) system has undergone significant advancements, transitioning into a multi-functional platform with various modes. This study introduces a novel imaging mode that enables the simultaneous acquisition of height and intensity features, addressing the diverse requirements of different regions. Referred to as non-common band imaging, this mode optimizes bandwidth allo...Show More
The tomographic Synthetic Aperture Radar (SAR) reconstruction based on deep learning (DL) can achieve high precision and efficiency, making it a promising method for various applications. However, current deep learning-based methods perform reconstruction by separately processing each range-azimuth resolution unit, which limits the utilization of features between resolution units and ignores the t...Show More
Near-field three-dimensional synthetic aperture radar (Near-field 3D-SAR) is a powerful imaging technique with diverse applications in scattering diagnosis, person/parcel imaging, building monitoring, forest monitoring, and more. This paper provides an overview of the imaging methods employed in Near-field 3D-SAR, focusing on the underlying methodologies, imaging models, and solving flowcharts. By...Show More
Inverse Synthetic Aperture Radar (ISAR) target recognition is an important branch of ISAR image research. The traditional ISAR recognition mission is done based on monostatic radar. However, the monostatic ISAR can only generate a single view image of the target. In this paper, to improve the recognition accuracy, a method of joint target recognition for Multi-station ISAR (MS-ISAR) via Multi-stat...Show More
Non-line-of-sight (NLOS) imaging of moving targets is of tremendous interest in the fields of urban sensing and autonomous driving. In this paper, a novel NLOS inverse synthetic aperture radar (ISAR) imaging method is proposed for moving targets by automotive millimeter-wave (MMW). In this scheme, an imaging model of the moving target in urban scenes is developed and analyzed. A low-frequency filt...Show More
The near-field array three-dimensional SAR can obtain the three-dimensional electromagnetic scattering characteristics of targets and present the imaging results in the form of point cloud. In recent years, it has been gradually used in the field of target RCS measurement. However, there are some problems in near-field array three-dimensional SAR images, such as interference, sidelobe and missing ...Show More
Point cloud upsampling and surface reconstruction work has important implications in model generation and target recognition, indoor navigation and autonomous driving. In this paper, an auto-encoder(AE) network based on octree convolution network are proposed for target surface reconstruction with millimeter-wave (MMW) radar and LIDAR. In the scheme, we learn to generate point cloud data by a two-...Show More