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This paper jointly optimizes the flying location and wireless communication transmit power for an unmanned aerial vehicle (UAV) conducting covert operations. This is motivated by application scenarios such as military ground surveillance…

Information Theory · Computer Science 2020-10-20 Shihao Yan , Stephen V. Hanly , Iain B. Collings

Assessing wireless coverage is a fundamental task for public network operators and private deployments, whose goal is to guarantee quality of service across the network while minimizing material waste and energy consumption. These maps are…

Networking and Internet Architecture · Computer Science 2025-02-26 Mattia Merluzzi , Giuseppe Di Poce , Paolo Di Lorenzo

Networks of multiple radars are typically used for improving the coverage and tracking accuracy. Recently, such networks have facilitated deployment of commercial radars for civilian applications such as healthcare, gesture recognition,…

Signal Processing · Electrical Eng. & Systems 2020-04-07 S. Hamed Javadi , Alfonso Farina

Optical imaging relies on the ability to illuminate an object, collect and analyze the light it scatters or transmits. Propagation through complex media such as biological tissues was so far believed to degrade the attainable depth as well…

Optics · Physics 2010-09-24 S. M. Popoff , G. Lerosey , M. Fink , A. C. Boccara , S. Gigan

Estimating camera poses is a fundamental task for 3D reconstruction and remains challenging given sparsely sampled views (<10). In contrast to existing approaches that pursue top-down prediction of global parametrizations of camera…

Computer Vision and Pattern Recognition · Computer Science 2024-04-05 Jason Y. Zhang , Amy Lin , Moneish Kumar , Tzu-Hsuan Yang , Deva Ramanan , Shubham Tulsiani

Camera pose estimation in large-scale environments is still an open question and, despite recent promising results, it may still fail in some situations. The research so far has focused on improving subcomponents of estimation pipelines, to…

Computer Vision and Pattern Recognition · Computer Science 2020-10-02 Luca Ferranti , Xiaotian Li , Jani Boutellier , Juho Kannala

This work proposes a jointly optimized trajectory generation and camera control approach, enabling an autonomous agent, such as an unmanned aerial vehicle (UAV) operating in 3D environments, to plan and execute coverage trajectories that…

Satellite communication is envisioned as a key enabler of future 6G networks, yet its wide coverage with high link attenuation poses significant challenges for physical layer security. In this paper, we investigate secure multi-beam,…

Information Theory · Computer Science 2025-08-29 Zhaole Wang , Naijin Liu , Xiao Tang , Shuai Yuan , Chenxi Wang , Zhi Zhai , Qinghe Du , Jinxin Liu

Multi-camera SLAM systems offer a plethora of advantages, primarily stemming from their capacity to amalgamate information from a broader field of view, thereby resulting in heightened robustness and improved localization accuracy. In this…

Robotics · Computer Science 2024-04-02 Han Song , Cong Liu , Huafeng Dai

Neural Radiance Fields (NeRF) recently emerged as a new paradigm for object representation from multi-view (MV) images. Yet, it cannot handle multi-scale (MS) images and camera pose estimation errors, which generally is the case with…

Computer Vision and Pattern Recognition · Computer Science 2022-10-11 Nishant Jain , Suryansh Kumar , Luc Van Gool

Beam divergence control is a key factor in maintaining reliable coverage in indoor optical wireless communication (OWC) systems as receiver height varies.Conventional systems employ fixed divergence angles, which result in significant…

Optimization and Control · Mathematics 2026-02-04 Hossein Safi , Rizwana Ahmad , Iman Tavakkolnia , Harald Haas

The sixth generation (6G) mobile communication networks are expected to offer a new paradigm of cellular integrated sensing and communication (ISAC). However, due to the intrinsic difference between sensing and communication in terms of…

Information Theory · Computer Science 2022-01-26 Ruoguang Li , Zhiqiang Xiao , Yong Zeng

We present a model for layered security with applications to the protection of sites such as stadiums or large gathering places. We formulate the problem as one of maximizing the capture of illegal contraband. The objective function is…

Other Computer Science · Computer Science 2022-04-20 Tsvetan Asamov , Emre Yamangil , Endre Boros , Paul Kantor , Fred Roberts

In this paper, a high coverage algorithm termed enhanced camera assisted received signal strength ratio (eCA-RSSR) positioning algorithm is proposed for visible light positioning (VLP) systems. The basic idea of eCA-RSSR is to utilize…

Signal Processing · Electrical Eng. & Systems 2020-04-15 Lin Bai , Yang Yang , Chunyan Feng , Caili Guo , Julian Cheng

State-of-the-art visual recognition and detection systems increasingly rely on large amounts of training data and complex classifiers. Therefore it becomes increasingly expensive both to manually annotate datasets and to keep running times…

Computer Vision and Pattern Recognition · Computer Science 2014-12-02 Stefan Mathe , Cristian Sminchisescu

It is always a challenging task for multi-agent systems to achieve efficient and robust coverage in uncertain environments. The absence of global positioning information on the uncertain environment introduces significant complexity to the…

Optimization and Control · Mathematics 2025-12-22 Chao Zhai , Yanlin Li

This paper addresses a drawback of massive multiple-input multiple-output Maximum Ratio Transmission beamforming. In some propagation conditions, when the base station serves the same target user equipment for a long period, it reduces the…

Signal Processing · Electrical Eng. & Systems 2022-06-16 Nour Awarkeh , Dinh-Thuy Phan-Huy , Raphael Visoz , Marco Di Renzo

Using RF signals for wireless sensing has gained increasing attention. However, due to the unwanted multi-path fading in uncontrollable radio environments, the accuracy of RF sensing is limited. Instead of passively adapting to the…

Signal Processing · Electrical Eng. & Systems 2020-11-26 Jingzhi Hu , Hongliang Zhang , Kaigui Bian , Marco Di Renzo , Zhu Han , Lingyang Song

In recent years, multi-modal fusion has attracted a lot of research interest, both in academia, and in industry. Multimodal fusion entails the combination of information from a set of different types of sensors. Exploiting complementary…

Machine Learning · Computer Science 2020-08-27 Siddharth Roheda , Hamid Krim , Benjamin S. Riggan

6D pose estimation of textureless objects is a valuable but challenging task for many robotic applications. In this work, we propose a framework to address this challenge using only RGB images acquired from multiple viewpoints. The core…

Robotics · Computer Science 2023-02-23 Jun Yang , Wenjie Xue , Sahar Ghavidel , Steven L. Waslander