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Related papers: Radio Frequency Interference Detection Using Effic…

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This paper explores the use of ambient radio frequency (RF) signals for human presence detection through deep learning. Using WiFi signal as an example, we demonstrate that the channel state information (CSI) obtained at the receiver…

Machine Learning · Computer Science 2020-12-11 Yang Liu , Tiexing Wang , Yuexin Jiang , Biao Chen

Accurate detection of retinal vessels plays a critical role in reflecting a wide range of health status indicators in the clinical diagnosis of ocular diseases. Recently, advances in deep learning have led to a surge in retinal vessel…

Computer Vision and Pattern Recognition · Computer Science 2025-11-11 Jiawen Liu , Yuanbo Zeng , Jiaming Liang , Yizhen Yang , Yiheng Zhang , Enhui Cai , Xiaoqi Sheng , Hongmin Cai

Detecting the redshifted global 21-cm signal from the cosmic dawn (CD) remains a major challenge due to strong terrestrial Radio Frequency Interference (RFI), particularly dominated by Frequency Modulation (FM) transmissions in the 88-110…

Instrumentation and Methods for Astrophysics · Physics 2026-05-22 Yogen Pranesh , Mayuri Sathyanarayana Rao , Saurabh Singh

Change detection, i.e. identification per pixel of changes for some classes of interest from a set of bi-temporal co-registered images, is a fundamental task in the field of remote sensing. It remains challenging due to unrelated forms of…

Computer Vision and Pattern Recognition · Computer Science 2021-09-20 Foivos I. Diakogiannis , François Waldner , Peter Caccetta

The Search for Extraterrestrial Intelligence (SETI) attempts to address the possibility of the presence of technological civilizations beyond the Earth. Benefiting from high sensitivity, large sky coverage, an innovative feed cabin for…

RFI mitigation is a critically important issue in radio astronomy using existing instruments as well as in the development of next-generation radio telescopes, such as the Square Kilometer Array (SKA). Most designs for the SKA involve…

Astrophysics · Physics 2015-06-24 N. D. R. Bhat , J. M. Cordes , S. Chatterjee , T. J. W. Lazio

This research addresses the challenge of developing a universal deepfake detector that can effectively identify unseen deepfake images despite limited training data. Existing frequency-based paradigms have relied on frequency-level…

Computer Vision and Pattern Recognition · Computer Science 2024-03-13 Chuangchuang Tan , Yao Zhao , Shikui Wei , Guanghua Gu , Ping Liu , Yunchao Wei

The forthcoming generation of radio telescope arrays promises significant advancements in sensitivity and resolution, enabling the identification and characterization of many new faint and diffuse radio sources. Conventional manual…

Instrumentation and Methods for Astrophysics · Physics 2024-08-21 Chiara Stuardi , Claudio Gheller , Franco Vazza , Andrea Botteon

The "search for extraterrestrial intelligence" (SETI) commensal surveys aim to scan the sky to find possible technosignatures from the extraterrestrial intelligence (ETI). The mitigation of radio frequency interference (RFI) is an important…

Instrumentation and Methods for Astrophysics · Physics 2023-08-21 Yu-Chen Wang , Zhen-Zhao Tao , Zhi-Song Zhang , Cheqiu Lyu , Tingting Zhang , Tong-Jie Zhang , Dan Werthimer

The growing need for electromagnetic spectrum to support the next generation (xG) communication networks increasingly generate unwanted radio frequency interference (RFI) in protected bands for radio astronomy. RFI is commonly mitigated at…

Signal Processing · Electrical Eng. & Systems 2022-11-01 Shuvam Chakraborty , Gregory Hellbourg , Maqsood Careem , Dola Saha , Aveek Dutta

Radio frequency fingerprint identification (RFFI) is a promising device authentication technique based on the transmitter hardware impairments. In this paper, we propose a scalable and robust RFFI framework achieved by deep learning powered…

Signal Processing · Electrical Eng. & Systems 2021-07-08 Guanxiong Shen , Junqing Zhang , Alan Marshall , Joseph Cavallaro

In the realm of deep learning, spatial attention mechanisms have emerged as a vital method for enhancing the performance of convolutional neural networks. However, these mechanisms possess inherent limitations that cannot be overlooked.…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Xin Zhang , Chen Liu , Degang Yang , Tingting Song , Yichen Ye , Ke Li , Yingze Song

Computer vision researchers have extensively worked on fundamental infrared visual recognition for the past few decades. Among various approaches, deep learning has emerged as the most promising candidate. However, Infrared Small Object…

Computer Vision and Pattern Recognition · Computer Science 2025-05-28 Imad Ali Shah , Fahad Mumtaz Malik , Muhammad Waqas Ashraf

Ground-based 21-cm experiments targeting the global signal from the periods of Cosmic Dawn (CD) and Epoch of Reionization (EoR) are susceptible to adverse effects presented by i) the ionosphere ii) antenna chromaticity induced by objects in…

Instrumentation and Methods for Astrophysics · Physics 2023-08-08 Sonia Ghosh , Mayuri Sathyanarayana Rao , Saurabh Singh

We present DeepCSI, a novel approach to Wi-Fi radio fingerprinting (RFP) which leverages standard-compliant beamforming feedback matrices to authenticate MU-MIMO Wi-Fi devices on the move. By capturing unique imperfections in off-the-shelf…

Networking and Internet Architecture · Computer Science 2022-12-01 Francesca Meneghello , Michele Rossi , Francesco Restuccia

Detecting manipulated media has now become a pressing issue with the recent rise of deepfakes. Most existing approaches fail to generalize across diverse datasets and generation techniques. We thus propose a novel ensemble framework,…

Computer Vision and Pattern Recognition · Computer Science 2025-10-07 Vrushank Ahire , Aniruddh Muley , Shivam Zample , Siddharth Verma , Pranav Menon , Surbhi Madan , Abhinav Dhall

Radio frequency interference (RFI) already limits the sensitivity of existing radio telescopes in several frequency bands and may prove to be an even greater obstacle for future generation instruments to overcome. I aim to create a…

Instrumentation and Methods for Astrophysics · Physics 2015-03-17 P. A. Fridman

We investigated the use of a U-Net convolutional neural network for denoising simulated medium-resolution spectroscopic observations of stars. Simulated spectra were generated under realistic observational conditions resembling the Subaru…

Instrumentation and Methods for Astrophysics · Physics 2025-04-04 Balázs Pál , László Dobos

Medical image segmentation is a critical task in healthcare applications, and U-Nets have demonstrated promising results. This work delves into the understudied aspect of receptive field (RF) size and its impact on the U-Net and Attention…

Image and Video Processing · Electrical Eng. & Systems 2024-06-25 Vincent Loos , Rohit Pardasani , Navchetan Awasthi