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Radio Frequency Fingerprint Identification (RFFI) technology uniquely identifies emitters by analyzing unique distortions in the transmitted signal caused by non-ideal hardware. Recently, RFFI based on deep learning methods has gained…

信号处理 · 电气工程与系统科学 2024-11-07 Ying Zhang , Qiang Li , Hongli Liu , Liu Yang , Jian Yang

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…

天体物理仪器与方法 · 物理学 2023-08-08 Sonia Ghosh , Mayuri Sathyanarayana Rao , Saurabh Singh

Radio frequency fingerprint identification (RFFI) is a promising device authentication approach by exploiting the unique hardware impairments as device identifiers. Because the hardware features are extracted from the received waveform,…

信号处理 · 电气工程与系统科学 2024-12-12 Lingnan Xie , Linning Peng , Junqing Zhang

Radio interferometry calibration and Radio Frequency Interference (RFI) removal are usually done separately. Here we show that jointly modelling the antenna gains and RFI has significant benefits when the RFI follows precise trajectories,…

天体物理仪器与方法 · 物理学 2025-02-19 Chris Finlay , Bruce A. Bassett , Martin Kunz , Nadeem Oozeer

With the ongoing growth in radio communications, there is an increased contamination of radio astronomical source data, which hinders the study of celestial radio sources. In many cases, fast mitigation of strong radio frequency…

信号处理 · 电气工程与系统科学 2024-03-08 Zaid Bin Tariq , Teviet Creighton , Louis P. Dartez , Naofal Al-Dhahir , Murat Torlak

With the upcoming commensal surveys for Fast Radio Bursts (FRBs), and their high candidate rate, usage of machine learning algorithms for candidate classification is a necessity. Such algorithms will also play a pivotal role in sending…

天体物理仪器与方法 · 物理学 2020-06-26 Devansh Agarwal , Kshitij Aggarwal , Sarah Burke-Spolaor , Duncan R. Lorimer , Nathaniel Garver-Daniels

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…

机器学习 · 计算机科学 2020-12-11 Yang Liu , Tiexing Wang , Yuexin Jiang , Biao Chen

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…

计算机视觉与模式识别 · 计算机科学 2024-03-13 Chuangchuang Tan , Yao Zhao , Shikui Wei , Guanghua Gu , Ping Liu , Yunchao Wei

Radio Frequency Interference (RFI) greatly reduces sensitivity of radio observations to astrophysical signals and creates false positive candidates in searches for radio transients. Real signals are missed while considerable computational…

天体物理仪器与方法 · 物理学 2025-10-06 Joseph W. Kania , Kevin Bandura , Duncan R. Lorimer , Richard Prestage

A technique is described that is used to improve the detection of radio-frequency interference in astronomical radio observatories. It is applied on a two-dimensional interference mask after regular detection in the time-frequency domain…

天体物理仪器与方法 · 物理学 2012-03-01 A. R. Offringa , J. J. van de Gronde , J. B. T. M. Roerdink

We introduce a new class of iterative image reconstruction algorithms for radio interferometry, at the interface of convex optimization and deep learning, inspired by plug-and-play methods. The approach consists in learning a prior image…

图像与视频处理 · 电气工程与系统科学 2022-09-28 Matthieu Terris , Arwa Dabbech , Chao Tang , Yves Wiaux

Image forgery has become a critical threat with the rapid proliferation of AI-based generation tools, which make it increasingly easy to synthesize realistic but fraudulent facial content. Existing detection methods achieve near-perfect…

计算机视觉与模式识别 · 计算机科学 2026-01-21 Wyatt McCurdy , Xin Zhang , Yuqi Song , Min Gao

Radio Frequency Interference (RFI) of impulsive nature is created by sources like sparking on high-power transmission lines due to gap or corona discharge and automobile sparking, and it affects the entire observing frequency bands of…

天体物理仪器与方法 · 物理学 2023-05-10 Kaushal D. Buch , Ruta Kale , Mekhala Muley , Sanjay Kudale , Ajithkumar B.

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…

网络与互联网体系结构 · 计算机科学 2022-12-01 Francesca Meneghello , Michele Rossi , Francesco Restuccia

The detection of fast radio bursts (FRBs) in radio astronomy is a complex task due to the challenges posed by radio frequency interference (RFI) and signal dispersion in the interstellar medium. Traditional search algorithms are often…

天体物理仪器与方法 · 物理学 2024-10-07 Yong-Kun Zhang , Di Li , Yi Feng , Chao-Wei Tsai , Pei Wang , Chen-Hui Niu , Hua-Xi Chen , Yu-Hao Zhu

Radio Frequency Fingerprinting Identification (RFFI) is a lightweight physical layer identity authentication technique. It identifies the radio-frequency device by analyzing the signal feature differences caused by the inevitable minor…

密码学与安全 · 计算机科学 2025-01-28 Donghong Cai , Jiahao Shan , Ning Gao , Bingtao He , Yingyang Chen , Shi Jin , Pingzhi Fan

Time-frequency analysis is an important and challenging task in many applications. Fourier and wavelet analysis are two classic methods that have achieved remarkable success in many fields. However, they also exhibit limitations when…

机器学习 · 计算机科学 2024-10-25 Feng Zhou , Antonio Cicone , Haomin Zhou

Searching for fleeting radio transients like fast radio bursts (FRBs) with wide-field radio telescopes has become a common challenge in data-intensive science. Conventional algorithms normally cost enormous time to seek candidates by…

Remote sensing image (RSI) denoising is an important topic in the field of remote sensing. Despite the impressive denoising performance of RSI denoising methods, most current deep learning-based approaches function as black boxes and lack…

计算机视觉与模式识别 · 计算机科学 2025-06-02 Jingjing Liu , Jiashun Jin , Xianchao Xiu , Jianhua Zhang , Wanquan Liu

This paper presents DeepCRF, a new framework that harnesses deep learning to extract subtle micro-signals from channel state information (CSI) measurements, enabling robust and resilient radio-frequency fingerprinting (RFF) of…

信号处理 · 电气工程与系统科学 2024-11-12 Ruiqi Kong , He Chen