Practical Issue Analyses and Imaging Approach for Hypersonic Vehicle-Borne SAR With Near-Vertical Diving Trajectory

Tang, Shiyang; Zhang, Xintian; He, Zixuan; Chen, Zhanye; Du, Wangwang; Li, Yinan; Zhang, Juan; Guo, Ping; Zhang, Linrang; So, Hing Cheung

doi:10.1109/tgrs.2023.3254164

Cited by 3 publications

(1 citation statement)

References 39 publications

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“…In contrast to RGB images [1][2][3][4], multispectral images [5], and others [6], the hyperspectral image possesses several hundreds of bands that can construct a continuous spectral curve. Based on the differences in spectral curves, different feature types are easy to discriminate.…”

Section: Introductionmentioning

confidence: 99%

Hyperspectral Anomaly Detection via Low-Rank Representation with Dual Graph Regularizations and Adaptive Dictionary

Cheng,

Mu,

Lin

et al. 2024

Remote Sensing

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In a hyperspectral image, there is a close correlation between spectra and a certain degree of correlation in the pixel space. However, most existing low-rank representation (LRR) methods struggle to utilize these two characteristics simultaneously to detect anomalies. To address this challenge, a novel low-rank representation with dual graph regularization and an adaptive dictionary (DGRAD-LRR) is proposed for hyperspectral anomaly detection. To be specific, dual graph regularization, which combines spectral and spatial regularization, provides a new paradigm for LRR, and it can effectively preserve the local geometrical structure in the spectral and spatial information. To obtain a robust background dictionary, a novel adaptive dictionary strategy is utilized for the LRR model. In addition, extensive comparative experiments and an ablation study were conducted to demonstrate the superiority and practicality of the proposed DGRAD-LRR method.

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Section: Introductionmentioning

confidence: 99%

Hyperspectral Anomaly Detection via Low-Rank Representation with Dual Graph Regularizations and Adaptive Dictionary

Cheng,

Mu,

Lin

et al. 2024

Remote Sensing

View full text Add to dashboard Cite

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Efficient BiSAR PFA Wavefront Curvature Compensation for Arbitrary Radar Flight Trajectories

Shi,

Mao,

Jakobsson

et al. 2023

IEEE Trans. Geosci. Remote Sensing

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Thorough Understanding and 3D Super-Resolution Imaging for Forward-Looking Missile-Borne SAR via a Maneuvering Trajectory

Gu,

Guo,

Zhao

et al. 2024

Remote Sensing

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For missile-borne platforms, traditional SAR technology consistently encounters two significant shortcomings: geometric distortion of 2D images and the inability to achieve forward-looking imaging. To address these issues, this paper explores the feasibility of using a maneuvering trajectory to enable forward-looking and three-dimensional imaging by analyzing the maneuvering characteristics of an actual missile-borne platform. Additionally, it derives the corresponding resolution characterization model, which lays a theoretical foundation for future applications. Building on this, the paper proposes a three-dimensional super-resolution imaging algorithm that combines axis rotation with compressed sensing. The axis rotation not only realizes the dimensionality reduction of data, but also can expand the observation scenario in the cross-track dimension. The proposed algorithm first focuses on the track-vertical plane to extract 2D position parameters. Then, a compressed sensing-based process is applied to extract reflection coefficients and super-resolution cross-track position parameters, thereby achieving precise 3D imaging reconstruction. Finally, numerical simulation results confirm the effectiveness and accuracy of the proposed algorithm.

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Practical Issue Analyses and Imaging Approach for Hypersonic Vehicle-Borne SAR With Near-Vertical Diving Trajectory

Cited by 3 publications

References 39 publications

Hyperspectral Anomaly Detection via Low-Rank Representation with Dual Graph Regularizations and Adaptive Dictionary

Hyperspectral Anomaly Detection via Low-Rank Representation with Dual Graph Regularizations and Adaptive Dictionary

Efficient BiSAR PFA Wavefront Curvature Compensation for Arbitrary Radar Flight Trajectories

Thorough Understanding and 3D Super-Resolution Imaging for Forward-Looking Missile-Borne SAR via a Maneuvering Trajectory

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