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This paper presents research findings on handling faulty measurements (i.e., outliers) of global navigation satellite systems (GNSS) for vehicle localization under adverse signal conditions in field applications, where raw GNSS data are…

Robotics · Computer Science 2025-10-16 Haoming Zhang

Neural network (NN) based methods are applied to the detection of radio frequency interference (RFI) in post-correlation,post-calibration time/frequency data. While calibration doesaffect RFI for the sake of this work a reduced dataset…

Instrumentation and Methods for Astrophysics · Physics 2020-07-31 Kyle Harrison , Amit Kumar Mishra

Radio frequency interference (RFI) detection and excision are key steps in the data-processing pipeline of the Five-hundred-meter Aperture Spherical radio Telescope (FAST). Because of its high sensitivity and large data rate, FAST requires…

Instrumentation and Methods for Astrophysics · Physics 2020-06-14 Zhicheng Yang , Ce Yu , Jian Xiao , Bo Zhang

The vulnerabilities associated with modern systems relying on Global Navigation Satellite Systems (GNSS) due to intentional and unintentional interference is an increasing threat. Since radio frequency interference (RFI) significantly…

Signal Processing · Electrical Eng. & Systems 2022-08-25 Arul Elango , Ahmed Al-Tahmeesschi , Mikko Saukkoriipi , Titti Malmivirta , Laura Ruotsalainen

Studying the universe through radio telescope observation is crucial. However, radio telescopes capture not only signals from the universe but also various interfering signals, known as Radio Frequency Interference (RFI). The presence of…

Instrumentation and Methods for Astrophysics · Physics 2024-04-02 Fei Gu , Longfei Hao , Bo Liang , Song Feng , Shoulin Wei , Wei Dai , Yonghua Xu , Zhixuan Li , Yihang Dao

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

Radio Frequency Interference (RFI) from anthropogenic radio sources poses significant challenges to current and future radio telescopes. Contemporary approaches to detecting RFI treat the task as a semantic segmentation problem on radio…

Neural and Evolutionary Computing · Computer Science 2026-01-23 Nicholas J Pritchard , Andreas Wicenec , Mohammed Bennamoun , Richard Dodson

The rapid development of new generation radio interferometers such as the Square Kilometer Array (SKA) has opened up unprecedented opportunities for astronomical research. However, anthropogenic Radio Frequency Interference (RFI) from…

Instrumentation and Methods for Astrophysics · Physics 2022-03-02 Haomin Sun , Hui Deng , Feng Wang , Ying Mei , Tingting Xu , Oleg Smirnov , Linhua Deng , Shoulin Wei

Accurate channel state information (CSI) is a critical bottleneck in modern wireless networks, with pilot overhead consuming 11\% to 21\% of transmission bandwidth and feedback delays causing severe throughput degradation under mobility.…

Signal Processing · Electrical Eng. & Systems 2026-02-11 Muhammad Umer , Muhammad Ahmed Mohsin , Ahsan Bilal , John M. Cioffi

Global Navigation Satellite System (GNSS) is essential for autonomous driving systems, unmanned vehicles, and various location-based technologies, as it provides the precise geospatial information necessary for navigation and situational…

Robotics · Computer Science 2025-05-27 Jianan Lou , Rong Zhang

In recent years, radio frequency (RF) sensing has gained increasing popularity due to its pervasiveness, low cost, non-intrusiveness, and privacy preservation. However, realizing the promises of RF sensing is highly nontrivial, given…

Signal Processing · Electrical Eng. & Systems 2021-10-29 Tianyue Zheng , Zhe Chen , Shuya Ding , Jun Luo

Addressing airport traffic jams is one of the most crucial and challenging tasks in the remote sensing field, especially for the busiest airports. Several solutions have been employed to address this problem depending on the airplane…

Computer Vision and Pattern Recognition · Computer Science 2021-08-31 W. T. Alshaibani , Mustafa Helvaci , Ibraheem Shayea , Hafizal Mohamad

We propose a novel approach for mitigating radio frequency interference (RFI) signals in radio data using the latest advances in deep learning. We employ a special type of Convolutional Neural Network, the U-Net, that enables the…

Instrumentation and Methods for Astrophysics · Physics 2017-01-16 Joel Akeret , Chihway Chang , Aurelien Lucchi , Alexandre Refregier

The increasing reliance on Global Navigation Satellite Systems (GNSS), particularly the Global Positioning System (GPS), underscores the urgent need to safeguard these technologies against malicious threats such as spoofing and jamming. As…

Cryptography and Security · Computer Science 2025-01-07 Ali Ghanbarzade , Hossein Soleimani

Reinforcement learning (RL) has seen great advancements in the past few years. Nevertheless, the consensus among the RL community is that currently used methods, despite all their benefits, suffer from extreme data inefficiency, especially…

Machine Learning · Computer Science 2020-04-01 Kacper Kielak

Functional near-infrared spectroscopy (fNIRS) is a non-invasive technique for monitoring brain activity. To better understand the brain, researchers often use deep learning to address the classification challenges of fNIRS data. Our study…

Signal Processing · Electrical Eng. & Systems 2024-11-25 Zhihao Cao

While many systems have been developed to train Graph Neural Networks (GNNs), efficient model inference and evaluation remain to be addressed. For instance, using the widely adopted node-wise approach, model evaluation can account for up to…

Machine Learning · Computer Science 2022-11-29 Peiqi Yin , Xiao Yan , Jinjing Zhou , Qiang Fu , Zhenkun Cai , James Cheng , Bo Tang , Minjie Wang

We present a novel neural network (NN) method for the detection and removal of Radio Frequency Interference (RFI) from the raw digitized signal in the signal processing chain of a typical radio astronomy experiment. The main advantage of…

Instrumentation and Methods for Astrophysics · Physics 2022-11-30 Benjamin R. B. Saliwanchik , Anže Slosar

Flagging of Radio Frequency Interference (RFI) is an increasingly important challenge in radio astronomy. We present R-Net, a deep convolutional ResNet architecture that significantly outperforms existing algorithms -- including the default…

Instrumentation and Methods for Astrophysics · Physics 2020-10-14 Alireza Vafaei Sadr , Bruce A. Bassett , Nadeem Oozeer , Yabebal Fantaye , Chris Finlay
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