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ISSN 2095-283X · China Science Publishing & Media Ltd. (CSPM) · 1,145 articles in the index
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Journal Article
Moving Target Detection Using Distributed MIMO Radar Based on Low-bit Quantization under the Background of Generalized Gaussian Noise
Signal-level cooperative detection based on multichannel observations is a pivotal technique in distributed Multiple-Input Multiple-Output (MIMO) radar for probing targets via the joint processing of multiple echo channels. However, such cooperative processing imposes substantial demands on…
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Journal Article
Tomographic SAR 3D Imaging Method Based on Geometry and Polarization Joint Constraints
Tomographic Synthetic Aperture Radar (TomoSAR) is a key technique for 3D reconstruction of urban buildings. Although existing methods improve imaging quality by incorporating geometric constraints and have evolved into Polarimetric TomoSAR (PolTomoSAR) with multi-polarization capabilities…
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Journal Article
A Survey on Earth Observation Multimodal Large Language Models: Framework, Core Technologies, and Future Perspectives
In recent years, the rapid development of Multimodal Large Language Models (MLLMs) and their applications in earth observation have garnered significant attention. Earth observation MLLMs achieve deep integration of multimodal information, including optical imagery, Synthetic Aperture Radar (SAR)…
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Journal Article
The Concept and System of Very Large Baseline Spaceborne Interferometric Synthetic Aperture Radar
Spaceborne Interferometric Synthetic Aperture Radar (InSAR) enables surface elevation measurement and deformation monitoring by measuring phase differences along the radar line of sight. However, meeting the future demand for higher-precision measurements remains challenging: analytical models…
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Journal Article
Sub-band Contrast and Entropy of SAR Images: Concepts and Applications to Interference Detection and Suppression
Spaceborne Synthetic Aperture Radar (SAR) data may be prone to interrupted-sampling repeater jamming and many common unintentional interferences, such as linear frequency modulated pulses. In this paper, we first divide a single-look complex SAR image into multiple sub-band images of equal…
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Journal Article
A Low-complexity Beampattern Shaping Method for Large-scale Rectangular Phased Arrays
To address the high computational complexity of beamforming in large-scale rectangular phased arrays, this paper proposes a low-complexity beampattern shaping method based on dimension decoupling, which markedly enhances design efficiency and beampattern adjustment flexibility. By fully exploiting…
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Journal Article
Joint Space-polarization Jamming Suppression Algorithm Based on Dimensional Decomposition for Digital Array Antenna
To address beam pattern distortion and monopulse angle estimation precision degradation associated with adaptive beamforming processing in the presence of mainlobe self-defense or escort jamming, a joint Space-Polarization Jamming Suppression method based on Dimensional Decomposition (SPJS-DD) is…
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Journal Article
A Review of the Current Developments in Monopulse Imaging Technology
In recent years, with the increasing diversification of mission requirements, radar imaging has expanded from conventional side-looking and squint-looking modes to the forward-looking mode. In this regard, the monopulse imaging method offers several advantages, including its forward-looking imaging…
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Journal Article
Demonstration of Spaceborne Multi-static SAR Tomography and Forest Height Estimation
Synthetic Aperture Radar Tomography (TomoSAR), by virtue of its three-dimensional (3D) resolution capability, can be used to study the 3D structure of semitransparent targets, such as forests, icebergs, and snowpacks. Currently, TomoSAR measurements, especially spaceborne TomoSAR, are mostly…
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Journal Article
Space-varying Motion Error Compensation for UAV-mounted through-the-wall SAR Based on SSA Algorithm
Small rotorcraft Unmanned Aerial Vehicles (UAVs), owing to their compact size, lightweight nature, and excellent maneuverability, are often used as platforms for Synthetic Aperture Radar (SAR) systems. These UAVs exhibit great potential in complex environment detection at low altitudes. However…
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Journal Article
A Moving Target Tracking Method Based on Adaptive Tensor Decomposition in Bistatic MIMO Radar
Moving target tracking is a fundamental task in bistatic Multiple-Input Multiple-Output (MIMO) radar systems, as it is essential for improving sensing accuracy and real-time adaptability in dynamic environments. This paper proposes a tracking algorithm based on Adaptive Tensor Decomposition (ATD)…
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Journal Article
Identification Method for Icosahedron Triangular Trihedral Corner Reflector and Vessels Based on Polarization Feature-range Joint Matrix
In the field of radar target recognition, the introduction of Icosahedron Triangular Trihedral Corner Reflector (ITTCR) has increased the difficulty of target identification tasks, especially under moderate to high sea states. Under such conditions, the undulating sea surface can couple with an…
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Journal Article
Optimization of Active-passive Interference Strategies for Rainbow Deep Q-network Joint Dichotomy Approach
The development of intelligent jamming decision-making technology has substantially enhanced the survival and confrontation capabilities of sensitive targets on the battlefield. However, existing jamming decision-making algorithms only consider active jamming while neglecting the optimization of…
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Journal Article
Multichannel Radar Forward-looking Imaging Method Based on Dual-network Cooperation
The challenge of distinguishing multiple targets and mitigating image blurry caused by Doppler gradient disappearance in the forward-looking direction of moving platforms is addressed through a multichannel radar forward-looking imaging method based on dual-network collaboration. The proposed…
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Journal Article
Resource Allocation and Precise Tracking Algorithm for Multiple Maneuvering Targets
In radar systems that track multiple maneuvering targets, conventional approaches often suffer from performance degradation due to suboptimal resource allocation and insufficient utilization of prior information. To address this challenge and significantly enhance tracking performance under…
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Journal Article
Data Acquisition for Detecting Low-observable Targets at Sea by Using the Holographic Staring Radar
Detecting targets despite sea clutter is crucial in military and civilian applications. In complex marine environments, sea clutter exhibits target-like spikes and inherently broad-spectrum characteristics, posing a significant challenge for marine radars in detecting Low-Slow-Small (LSS) targets…
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Journal Article
Research on Joint Design of Transceiver for MIMO Radar-communication Integration under Extended Clutter
In light of challenges related to weak target detection and limited communication performance in extended clutter environments, this paper proposes a joint design of a transmit waveform and receive filter within a Multiple-Input Multiple-Output (MIMO) Radar Communication Integration (RCI) system…
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Journal Article
RM Operator Learning-driven Non-line-of-sight 3D Imaging Method for Millimeter Wave Radar
Non-Line-Of-Sight (NLOS) millimeter wave radar 3D imaging leverages electromagnetic wave propagation characteristics such as reflection, diffraction, scattering, and penetration to detect, locate, and image hidden targets in occluded environments. It holds significant potential for applications in…
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Journal Article
Sparse Matching Filtering Algorithm for Tomographic SAR Imaging
Synthetic Aperture Radar Tomography (TomoSAR) has emerged as the primary technique for generating 3D SAR point clouds. In practice, ignoring the quadratic phase distribution in the elevation dimension causes defocusing artifacts due to inherent Fresnel diffraction in tomographic SAR processing. By…
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Journal Article
Review of Deep Learning for SAR 3D Imaging
With the increasing demands on imaging accuracy, efficiency, and robustness in modern three-Dimensional (3D) Synthetic Aperture Radar (SAR) imaging systems, the performance of traditional 3D imaging methods, such as matched filtering and compressed sensing, has become limited in these aspects. In…
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