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Intelligent reflecting surface (IRS) and unmanned aerial vehicle (UAV) have emerged as two promising technologies to boost the performance of wireless communication networks, by proactively altering the wireless communication channels via…

信息论 · 计算机科学 2021-03-30 Changsheng You , Zhenyu Kang , Yong Zeng , Rui Zhang

We synthesize both optical RGB and synthetic aperture radar (SAR) remote sensing images from land cover maps and auxiliary raster data using generative adversarial networks (GANs). In remote sensing, many types of data, such as digital…

计算机视觉与模式识别 · 计算机科学 2021-05-26 Gerald Baier , Antonin Deschemps , Michael Schmitt , Naoto Yokoya

The intelligent reflecting surface (IRS) is a planar array with massive reconfigurable passive elements, which can align the reflecting signals at the receivers via controlling the phase shifts at each element independently. Since IRS can…

信号处理 · 电气工程与系统科学 2020-10-22 Silei Wang , Qiang Li , Sissi Xiaoxiao Wu , Jingran Lin

In this paper, we investigate a self-sensing intelligent reflecting surface (IRS) aided millimeter wave (mmWave) integrated sensing and communication (ISAC) system. Unlike the conventional purely passive IRS, the self-sensing IRS can…

信号处理 · 电气工程与系统科学 2023-11-15 Zijian Chen , Ming-Min Zhao , Min Li , Fan Xu , Qingqing Wu , Min-Jian Zhao

Reconfigurable Intelligent Surfaces (RIS) emerge as promising technologies in future radar and wireless communication domains. This letter addresses the passive sensing issue utilizing wireless communication signals and RIS amidst…

信号处理 · 电气工程与系统科学 2024-02-22 Peng Chen , Zhimin Chen , Pu Miao , Yun Chen

In this paper, we propose a multi-RIS-aided wireless imaging framework in 3D facing the distributed placement of multi-sensor networks. The system creates a randomized reflection pattern by adjusting the RIS phase shift, enabling the…

图像与视频处理 · 电气工程与系统科学 2023-11-21 Fuhai Wang , Chun Wang , Rujing Xiong , Zhengyu Wang , Tiebin Mi , Robert Caiming Qiu

Timely and accurate detection of defects and contaminants in solar panels is critical for maintaining the efficiency and reliability of photovoltaic (PV) systems. While recent studies have applied deep learning to PV inspection, fair…

计算机视觉与模式识别 · 计算机科学 2026-01-07 Ashen Rodrigo , Isuru Munasinghe , Pubudu Sanjeewani , Asanka Perera

A rotational modulator (RM) gamma-ray imager is capable of obtaining significantly better angular resolution than the fundamental geometric resolution defined by the ratio of detector diameter to mask-detector separation. An RM imager…

天体物理仪器与方法 · 物理学 2010-10-15 B. Budden , G. L. Case , M. L. Cherry

Generative machine learning offers new opportunities to better understand complex Earth system dynamics. Recent diffusion-based methods address spectral biases and improve ensemble calibration in weather forecasting compared to…

This letter presents the first experimental results of our three-dimensional (3D) millimeter-wave (mm-wave) Compressive-Reflector-Antenna (CRA) imaging system. In this prototype, the CRA is 3D-printed and coated with a metallic spray to…

Reconfigurable intelligent surface (RIS) is a promising solution to boost coverage sustainably by reflecting waves from a transmitter to a receiver and acting as a low-power and passive relay. In this paper, for the first time, we…

信息论 · 计算机科学 2023-07-14 Philippe Ratajczak , Eric Séguenot , Dinh-Thuy Phan-Huy

Aiming at the limited battery capacity of widely deployed low-power smart devices in the Internet-of-things (IoT), this paper proposes a novel intelligent reflecting surface (IRS) empowered unmanned aerial vehicle (UAV) simultaneous…

信号处理 · 电气工程与系统科学 2022-10-28 Zhendong Li , Wen Chen , Huanqing Cao , Hongying Tang , Kunlun Wang , Jun Li

We consider the problem of detecting the locations of targets in the far field by sending probing signals from an antenna array and recording the reflected echoes. Drawing on key concepts from the area of compressive sensing, we use an…

信息论 · 计算机科学 2013-04-25 Max Hügel , Holger Rauhut , Thomas Strohmer

Image alignment plays a crucial role in solar physics research, primarily involving translation, rotation, and scaling. \G{The different wavelength images of the chromosphere and transition region have structural complexity and differences…

天体物理仪器与方法 · 物理学 2025-03-17 Yun Wang , KaiFan Ji , Zhenyu Jin , Hui Liu

Intelligent reflecting surface (IRS) has garnered growing interest and attention due to its potential for facilitating and supporting wireless communications and sensing. This paper studies a semi-passive IRS-enabled sensing system, where…

信号处理 · 电气工程与系统科学 2024-02-06 Qiaoyan Peng , Qingqing Wu , Wen Chen , Shaodan Ma , Ming-Min Zhao , Octavia A. Dobre

With increasing interest in mmWave and THz communication systems, an unmanned aerial vehicle (UAV)-mounted intelligent reflecting surface (IRS) has been suggested as a key enabling technology to establish robust line-of-sight (LoS)…

信号处理 · 电气工程与系统科学 2023-10-02 Doyoung Kim , Seongah Jeong , Jinkyu Kang

Autonomous surface vessels for floating-waste removal operate under varying hydrodynamics, external disturbances, and challenging water-surface perception. We present a field-validated system that combines camera-based polarimetric…

机器人学 · 计算机科学 2026-05-05 Luis F. W. Batista , Stéphanie Aravecchia , Cédric Pradalier

Neural Radiance Fields (NeRF) have demonstrated exceptional capabilities in reconstructing complex scenes with high fidelity. However, NeRF's view dependency can only handle low-frequency reflections. It falls short when handling complex…

计算机视觉与模式识别 · 计算机科学 2024-11-08 Chen Gao , Yipeng Wang , Changil Kim , Jia-Bin Huang , Johannes Kopf

Accurate wave-optical simulation in electron microscopy is severely constrained by the extreme sampling requirements imposed by short wavelengths and relatively large convergence angles. Conventional implementations of the angular spectrum…

光学 · 物理学 2026-03-18 Zdeněk Nekula , Jakub Bělín , Andrea Konečná

Rotatable antenna (RA) enhances wireless coverage through directional gain steering, yet suffers from performance degradation under physical blockages. Intelligent reflecting surface (IRS) establishes reflective paths to bypass obstacles,…

信息论 · 计算机科学 2026-01-19 Guoying Zhang , Qingqing Wu , Ziyuan Zheng , Qiaoyan Peng , Yanze Zhu , Wen Chen , Penghui Huang