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The proliferation of civilian and commercial unmanned aerial vehicles (UAVs) has heightened the demand for reliable radio frequency (RF)-based drone identification systems that can operate under dynamic and uncertain airspace conditions.…

Signal Processing · Electrical Eng. & Systems 2026-03-26 Julie Liu , Irshad A. Meer , Cicek Cavdar , Mustafa Ozger

Unmanned aerial vehicles (UAVs) are widely used due to their low cost and versatility, but they also pose security and privacy threats. Therefore, reliable detection for low-altitude UAVs is an important issue. The strong ground clutter…

Signal Processing · Electrical Eng. & Systems 2022-02-25 Zeyang Wu , Wenbo Wang , Yuexing Peng

The use of supervised learning with various sensing techniques such as audio, visual imaging, thermal sensing, RADAR, and radio frequency (RF) have been widely applied in the detection of unmanned aerial vehicles (UAV) in an environment.…

Signal Processing · Electrical Eng. & Systems 2021-04-15 Olusiji O Medaiyese , Martins Ezuma , Adrian P Lauf , Ismail Guvenc

Detecting Unmanned Aerial Vehicles (UAVs) in low-altitude environments is essential for perception and defense systems but remains highly challenging due to complex backgrounds, camouflage, and multimodal interference. In real-world…

Computer Vision and Pattern Recognition · Computer Science 2026-03-19 Shenghui Huang , Menghao Hu , Longkun Zou , Hongyu Chi , Zekai Li , Feng Gao , Fan Yang , Qingyao Wu , Ke Chen

The proliferation of unmanned aerial vehicles (UAVs) has created urgent demand for precise UAV monitoring. Existing RGB-based systems rely on spatial cues that degrade at small scales, particularly with high inter-type similarity,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-21 Yihang Luo , Jun Chen , Chao Xiao , Yingqian Wang , Zhaoxu Li , Qiang Ling , Xu He , Nuo Chen , Gaowei Guo , Hongge Li , Miao Li , Longguang Wang , Yulan Guo , Li Liu , Wei An , Zhijie Chen

Robust radio signal recognition is fundamental to spectrum management, electromagnetic space security, and intelligent wireless applications, yet existing deep-learning methods rely heavily on large labeled datasets and struggle to capture…

Signal Processing · Electrical Eng. & Systems 2026-04-14 Shilian Zheng , Jie Chen , Luxin Zhang , Xiaoniu Yang

The ubiquity of unmanned aerial vehicles (UAVs) or drones is posing both security and safety risks to the public as UAVs are now used for cybercrimes. To mitigate these risks, it is important to have a system that can detect or identify the…

Signal Processing · Electrical Eng. & Systems 2021-07-13 Olusiji O Medaiyese , Martins Ezuma , Adrian P Lauf , Ayodeji A Adeniran

Radio Frequency (RF) device fingerprinting has been recognized as a potential technology for enabling automated wireless device identification and classification. However, it faces a key challenge due to the domain shift that could arise…

Machine Learning · Computer Science 2024-03-08 Jun Chen , Weng-Keen Wong , Bechir Hamdaoui

Electroencephalography (EEG) - based air-writing recognition offers a human-computer interaction paradigm by decoding neural activity associated with handwriting movements. Despite its potential, reliable EEG-based air-writing recognition…

Signal Processing · Electrical Eng. & Systems 2026-03-23 Anant Jain , Ayush Tripathi

Utilizing widely distributed communication nodes to achieve environmental reconstruction is one of the significant scenarios for Integrated Sensing and Communication (ISAC) and a crucial technology for 6G. To achieve this crucial…

Signal Processing · Electrical Eng. & Systems 2024-04-24 Bohao Lu , Zhiqing Wei , Huici Wu , Xinrui Zeng , Lin Wang , Xi Lu , Dongyang Mei , Zhiyong Feng

Most recent UAV (Unmanned Aerial Vehicle) detectors focus primarily on general challenge such as uneven distribution and occlusion. However, the neglect of scale challenges, which encompass scale variation and small objects, continues to…

Computer Vision and Pattern Recognition · Computer Science 2024-09-12 Xuexue Li

As a pioneering work, PointContrast conducts unsupervised 3D representation learning via leveraging contrastive learning over raw RGB-D frames and proves its effectiveness on various downstream tasks. However, the trend of large-scale…

Computer Vision and Pattern Recognition · Computer Science 2023-03-27 Xiaoyang Wu , Xin Wen , Xihui Liu , Hengshuang Zhao

Most advanced unsupervised anomaly detection (UAD) methods rely on modeling feature representations of frozen encoder networks pre-trained on large-scale datasets, e.g. ImageNet. However, the features extracted from the encoders that are…

Computer Vision and Pattern Recognition · Computer Science 2023-10-25 Jia Guo , Shuai Lu , Lize Jia , Weihang Zhang , Huiqi Li

Radio Frequency (RF) fingerprinting offers a promising approach for drone identification and security, although it suffers from significant performance degradation when operating on different transmission channels. This paper presents…

Signal Processing · Electrical Eng. & Systems 2025-10-21 Fahrettin Emin Tiras , Hayriye Serra Altinoluk

Visual detection of Micro Air Vehicles (MAVs) has attracted increasing attention in recent years due to its important application in various tasks. The existing methods for MAV detection assume that the training set and testing set have the…

Robotics · Computer Science 2024-03-26 Yin Zhang , Jinhong Deng , Peidong Liu , Wen Li , Shiyu Zhao

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

The detection of non-cooperative unmanned aerial vehicles (UAVs) presents significant challenges for Integrated Sensing and Communication (ISAC) systems due to the inherent limitations of single-modal perception and the competition for…

Artificial Intelligence · Computer Science 2026-05-22 Wenfeng Wu , Luping Xiang , Kun Yang

State-of-the-art object detection methods applied to satellite and drone imagery largely fail to identify small and dense objects. One reason is the high variability of content in the overhead imagery due to the terrestrial region captured…

Computer Vision and Pattern Recognition · Computer Science 2023-11-01 Debojyoti Biswas , Jelena Tešić

Anomaly detection in multivariate time series (MTS) is hindered by dynamic inter-variable dependencies and feature entanglement under spectral noise, and in practice, is further complicated by the absence of anomaly labels. Existing…

Machine Learning · Computer Science 2026-05-25 Yunhua Pei , Zixing Song , Jin Zheng , John Cartlidge

The rise of unmanned aerial vehicle (UAV) operations, as well as the vulnerability of the UAVs' sensors, has led to the need for proper monitoring systems for detecting any abnormal behavior of the UAV. This work addresses this problem by…

Systems and Control · Electrical Eng. & Systems 2023-10-18 Antreas Palamas , Nicolas Souli , Tania Panayiotou , Panayiotis Kolios , Georgios Ellinas
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