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As radio telescopes become more sensitive, the damaging effects of radio frequency interference (RFI) become more apparent. Near radio telescope arrays, RFI sources are often easily removed or replaced; the challenge lies in identifying…

天体物理仪器与方法 · 物理学 2018-08-01 Daniel Czech , Amit Mishra , Michael Inggs

In a search for short timescale astrophysical transients in time-domain data, radio-frequency interference (RFI) causes both large quantities of false positive candidates and a significant reduction in sensitivity if not correctly…

天体物理仪器与方法 · 物理学 2021-12-07 V. Morello , K. M. Rajwade , B. W. Stappers

Detecting and mitigating Radio Frequency Interference (RFI) is critical for enabling and maximising the scientific output of radio telescopes. The emergence of machine learning methods has led to their application in radio astronomy, and in…

天体物理仪器与方法 · 物理学 2026-01-23 Nicholas J. Pritchard , Andreas Wicenec , Mohammed Bennamoun , Richard Dodson

Radio frequency interference (RFI) poses a growing challenge to satellite communications, particularly in uplink channels of Low Earth Orbit (LEO) systems, due to increasing spectrum congestion and uncertainty in the location of terrestrial…

信号处理 · 电气工程与系统科学 2025-10-02 Fernando Moya Caceres , Akram Al-Hourani , Saman Atapattu , Kandeepan Sithamparanathan

For the LISA and Taiji missions, both transient and continuous data anomalies would pose significant challenges to the detection, estimation, and subsequent scientific interpretation of gravitational wave signals. As is indicated by the…

广义相对论与量子宇宙学 · 物理学 2024-11-12 Pengzhan Wu , Minghui Du , Peng Xu

A technique is described for removing interference from a signal of interest ("channel 1") which is one of a set of N time-domain instrumental signals ("channels 1 to N"). We assume that channel 1 is a linear combination of "true" signal…

广义相对论与量子宇宙学 · 物理学 2007-05-23 Bruce Allen , Wensheng Hua , Adrian Ottewill

The CHIME radio telescope operates in the frequency bandwidth of 400 to 800 MHz. The CHIME/FRB collaboration has a data pipeline that analyzes the data in real time, suppresses radio frequency interferences (RFI) and searches for FRBs.…

天体物理仪器与方法 · 物理学 2023-11-21 K. J. Luke

Detection and mitigation of radio frequency interference (RFI) is the first and also the key step for data processing in radio observations, especially for ongoing low frequency radio experiments towards the detection of the cosmic dawn and…

天体物理仪器与方法 · 物理学 2016-03-02 Yan Huang , Xiang-Ping Wu , Qian Zheng , Jun-Hua Gu , Haiguang Xu

The necessity of accurate channel estimation for Successive and Parallel Interference Cancellation is well known. Iterative channel estimation and channel decoding (for instance by means of the Expectation-Maximization algorithm) is…

信息论 · 计算机科学 2016-11-17 Francisco Lazaro Blasco , Francesco Rossetto

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

A channel delay spread larger than the cyclic prefix (CP) creates inter-carrier/symbol interference (ISI/ICI) in orthogonal frequency-division multiplexing (OFDM). Recent interests in low-latency applications have motivated the usage of…

信息论 · 计算机科学 2021-02-12 Renaud-Alexandre Pitaval

The widely used global navigation satellite systems (GNSSs) are vulnerable to radio frequency interference (RFI). Long-range navigation (Loran), a terrestrial navigation system, can compensate for this weakness; however, it suffers from low…

信号处理 · 电气工程与系统科学 2022-12-13 Jongmin Park , Pyo-Woong Son , Woohyun Kim , Joon Hyo Rhee , Jiwon Seo

Radio frequency interference (RFI) mitigation remains a major challenge in the search for radio technosignatures. Typical mitigation strategies include a direction-of-origin (DoO) filter, where a signal is classified as RFI if it is…

天体物理仪器与方法 · 物理学 2022-02-02 Pavlo Pinchuk , Jean-Luc Margot

Signal artefacts due to Radio Frequency Interference (RFI) are a common nuisance in radio astronomy. Conventionally, the RFI-affected data are tagged by an expert data analyst in order to warrant data quality. In view of the increasing data…

天体物理仪器与方法 · 物理学 2018-08-30 Paul Ray Burd , Karl Mannheim , Tobias März , Jonas Ringholz , Alexander Kappes , Matthias Kadler

Radio Frequency Interference (RFI) has historically plagued radio astronomy, worsening with the rapid spread of electronics and increasing telescope sensitivity. We present a multi-dimensional probabilistic framework for characterising the…

天体物理仪器与方法 · 物理学 2021-10-25 Isaac Sihlangu , Nadeem Oozeer , Bruce A. Bassett

Spiking Neural Networks (SNNs) promise efficient and dynamic spatio-temporal data processing. This paper reformulates a significant challenge in radio astronomy, Radio Frequency Interference (RFI) detection, as a time-series segmentation…

神经与进化计算 · 计算机科学 2026-01-23 Nicholas J. Pritchard , Andreas Wicenec , Mohammed Bennamoun , Richard Dodson

Future wireless networks and sensing systems will benefit from access to large chunks of spectrum above 100 GHz, to achieve terabit-per-second data rates in 6th Generation (6G) cellular systems and improve accuracy and reach of Earth…

信号处理 · 电气工程与系统科学 2024-02-14 Paolo Testolina , Michele Polese , Josep M. Jornet , Tommaso Melodia , Michele Zorzi

Radio-frequency interference (RFI) presents a significant obstacle to current radio interferometry experiments aimed at the Epoch of Reionization. RFI contamination is often several orders of magnitude brighter than the astrophysical…

天体物理仪器与方法 · 物理学 2025-03-05 Jade M. Ducharme , Jonathan C. Pober

Extensive radio frequency interference (RFI) monitoring is essential in the site selection process before constructing radio astronomy observatories, followed by mitigation strategies to minimize its adverse effects. Malaysia has an…

One of the fundamental challenges affecting the performance of communication systems is the undesired impact of noise on a signal. Noise distorts the signal and originates due to several sources including, system non-linearity and noise…

信号处理 · 电气工程与系统科学 2018-01-04 Adnan Quadri