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Radio interferometry invariably suffers from an incomplete coverage of the spatial Fourier space, which leads to imaging artifacts. The current state-of-the-art technique is to create an image by Fourier-transforming the incomplete…

Instrumentation and Methods for Astrophysics · Physics 2024-12-19 F. Geyer , K. Schmidt , J. Kummer , M. Brüggen , H. W. Edler , D. Elsässer , F. Griese , A. Poggenpohl , L. Rustige , W. Rhode

As radio telescopes become sensitive, radio frequency interference (RFI) is more and more serious for interesting signals of radio astronomy. There exist demands for developing an automatic, accurate and efficient RFI mitigation method.…

Instrumentation and Methods for Astrophysics · Physics 2023-12-27 Qingguo Zeng , Xue Chen , Xiangru Li , J. L. Han , Chen Wang , D. J. Zhou , Tao Wang

This paper investigates the problem of classification of unmanned aerial vehicles (UAVs) from radio frequency (RF) fingerprints at the low signal-to-noise ratio (SNR) regime. We use convolutional neural networks (CNNs) trained with both RF…

Signal Processing · Electrical Eng. & Systems 2020-09-22 Ender Ozturk , Fatih Erden , Ismail Guvenc

Radio frequency interference (RFI) is a significant problem for current and future radio telescopes. We describe here a method for post-correlation cancellation of RFI for the special case of an extended source observed with an…

Astrophysics · Physics 2015-06-24 Geoffrey C. Bower

The search for extraterrestrial intelligence (SETI) commensal surveys aim to scan the sky to detect technosignatures from extraterrestrial life. A major challenge in SETI is the effective mitigation of radio frequency interference (RFI), a…

Instrumentation and Methods for Astrophysics · Physics 2026-01-21 Li-Li Zhao , Xiao-Hang Luan , Xin Chao , Yu-Chen Wang , Jian-Kang Li , Zhen-Zhao Tao , Tong-Jie Zhang , Hong-Feng Wang , Dan Werthimer

Because of the denser active use of the spectrum, and because of radio telescopes higher sensitivity, radio frequency interference (RFI) mitigation has become a sensitive topic for current and future radio telescope designs. Even if quite…

Instrumentation and Methods for Astrophysics · Physics 2017-03-03 Dumez-Viou Cédric , Weber Rodolphe , Ravier Philippe

Upcoming 21cm surveys with the SKA1-LOW telescope will enable imaging of the neutral hydrogen distribution on cosmological scales in the early Universe. These surveys are expected to generate huge imaging datasets that will encode more…

Cosmology and Nongalactic Astrophysics · Physics 2020-04-22 Tumelo Mangena , Sultan Hassan , Mario G. Santos

Radio frequency fingerprint identification (RFFI) is becoming increasingly popular, especially in applications with constrained power, such as the Internet of Things (IoT). Due to subtle manufacturing variations, wireless devices have…

Signal Processing · Electrical Eng. & Systems 2024-10-11 Lu Yang , Seyit Camtepe , Yansong Gao , Vicky Liu , Dhammika Jayalath

Imminent radio telescope observatories provide massive data rates making deep learning based processing appealing while simultaneously demanding real-time performance at low-energy; prohibiting the use of many artificial neural network…

Neural and Evolutionary Computing · Computer Science 2025-11-21 Nicholas J. Pritchard , Andreas Wicenec , Richard Dodson , Mohammed Bennamoun , Dylan R. Muir

Radio astronomy relies on bespoke, experimental and innovative computing solutions. This will continue as next-generation telescopes such as the Square Kilometre Array (SKA) and next-generation Very Large Array (ngVLA) take shape. Under…

Instrumentation and Methods for Astrophysics · Physics 2026-01-13 Nicholas J. Pritchard , Richard Dodson , Andreas Wicenec

Modern radio astronomy instruments generate vast amounts of data, and the increasingly challenging radio frequency interference (RFI) environment necessitates ever-more sophisticated RFI rejection algorithms. The "needle in a haystack"…

Signal Processing · Electrical Eng. & Systems 2024-01-22 Peter Xiangyuan Ma , Steve Croft , Chris Lintott , Andrew P. V. Siemion

Radio Frequency Interference (RFI) is a growing concern in the radio astronomy community. Single-dish telescopes are particularly susceptible to RFI. Several methods have been developed to cope with RF-polluted environments, based on…

Instrumentation and Methods for Astrophysics · Physics 2018-05-23 R. Finger , F. Curotto , R. Fuentes , R. Duan , L. Bronfman , D. Li

This paper presents the effects of radio frequency interference (RFI) mitigation on a radio telescope's sensitivity and beam pattern. It specifically explores the impact of subspace-projection mitigation on the phased array feed (PAF) beams…

Instrumentation and Methods for Astrophysics · Physics 2024-05-28 Liroy Lourenco , Aaron P Chippendale

The integration of Artificial Intelligence (AI) in medical diagnostics is often hindered by model opacity, where high-accuracy systems function as "black boxes" without transparent reasoning. This limitation is critical in clinical…

Image and Video Processing · Electrical Eng. & Systems 2024-09-23 Pascal Passigan , Vayd Ramkumar

Radio frequency fingerprint identification (RFFI) is an emerging device authentication technique that relies on intrinsic hardware characteristics of wireless devices. We designed an RFFI scheme for Long Range (LoRa) systems based on…

Signal Processing · Electrical Eng. & Systems 2021-01-06 Guanxiong Shen , Junqing Zhang , Alan Marshall , Linning Peng , Xianbin Wang

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

State-of-the-art object detection approaches such as Fast/Faster R-CNN, SSD, or YOLO have difficulties detecting dense, small targets with arbitrary orientation in large aerial images. The main reason is that using interpolation to align…

Computer Vision and Pattern Recognition · Computer Science 2020-06-01 Wentong Liao , Xiang Chen , Jingfeng Yang , Stefan Roth , Michael Goesele , Michael Ying Yang , Bodo Rosenhahn

Deep convolutional neural networks (DCNNs) are an influential tool for solving various problems in the machine learning and computer vision fields. In this paper, we introduce a new deep learning model called an Inception- Recurrent…

Computer Vision and Pattern Recognition · Computer Science 2017-04-26 Md Zahangir Alom , Mahmudul Hasan , Chris Yakopcic , Tarek M. Taha

Radio frequency fingerprint identification (RFFI) can classify wireless devices by analyzing the signal distortions caused by the intrinsic hardware impairments. State-of-the-art neural networks have been adopted for RFFI. However, many…

Signal Processing · Electrical Eng. & Systems 2022-07-08 Guanxiong Shen , Junqing Zhang , Alan Marshall , Mikko Valkama , Joseph Cavallaro

Machine learning research in GNSS radio frequency interference (RFI) detection often lacks a clear empirical justification for the choice of deep learning architectures over simpler machine learning approaches. In this work, we argue for a…

Signal Processing · Electrical Eng. & Systems 2025-04-15 Viktor Ivanov , Richard C. Wilson , Maurizio Scaramuzza