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The performance of irregular phased array architectures is assessed in the context of multi-user multiple-input multiple-output (MU-MIMO) communications operating beyond 100 GHz. Realizing half-wavelength spaced planar phased arrays is…

信号处理 · 电气工程与系统科学 2025-09-30 Yigit Ertugrul , Kamil Yavuz Kapusuz , Claude Desset , Sofie Pollin

Several modern accelerator facilities require the synchronization of equipment, which is distributed over large distances, down to the femto-second scale. This document describes the resulting problems, gives a basic description of concepts…

加速器物理 · 物理学 2020-05-18 Alessandro Gallo

Long-term monitoring and exploration of extreme environments, such as underwater storage facilities, is costly, labor-intensive, and hazardous. Automating this process with low-cost, collaborative robots can greatly improve efficiency.…

机器人学 · 计算机科学 2025-03-05 Shuang Chen , Yifeng He , Barry Lennox , Farshad Arvin , Amir Atapour-Abarghouei

In this work, we propose using camera arrays coupled with coherent illumination as an effective method of improving spatial resolution in long distance images by a factor of ten and beyond. Recent advances in ptychography have demonstrated…

计算机视觉与模式识别 · 计算机科学 2015-11-29 Jason Holloway , M. Salman Asif , Manoj Kumar Sharma , Nathan Matsuda , Roarke Horstmeyer , Oliver Cossairt , Ashok Veeraraghavan

TeraHertz (THz) communications are envisioned as a promising technology, owing to its unprecedented multi-GHz bandwidth. One fundamental challenge when moving to new spectrum is to understand the science of radio propagation and develop an…

信息论 · 计算机科学 2021-02-01 Yi Chen , Yuanbo Li , Chong Han , Ziming Yu , Guangjian Wang

Longitudinal oscillations of bunched beams in synchrotrons have been analyzed by accelerator physicists for decades, and a closed theory is well-known [1]. The first modes of oscillation are the coherent dipole mode, quadrupole mode, and…

加速器物理 · 物理学 2010-11-18 Harald Klingbeil , Dieter Lens , Monika Mehler , Bernhard Zipfel

Low-latency instance segmentation of LiDAR point clouds is crucial in real-world applications because it serves as an initial and frequently-used building block in a robot's perception pipeline, where every task adds further delay.…

计算机视觉与模式识别 · 计算机科学 2024-07-26 Andreas Reich , Mirko Maehlisch

In this review, we discuss the use of continuous variable spectroscopy techniques for investigating quantum coherence and light-matter interactions in semiconductor systems with ultrafast dynamics. We focus on multichannel homodyne…

介观与纳米尺度物理 · 物理学 2023-06-05 Carolin Lüders , Franziska Barkhausen , Matthias Pukrop , Elena Rozas , Jan Sperling , Stefan Schumacher , Marc Aßmann

A pair of coupled erbium doped fiber ring lasers is used to explore the dynamics of coupled spatiotemporal systems. The lasers are mutually coupled with a coupling delay less than the cavity round-trip time. We study synchronization between…

混沌动力学 · 物理学 2009-11-11 L. B. Shaw , I. B. Schwartz , E. A. Rogers , R. Roy

In this paper, we study complete synchronization of the complex dynamical networks described by linearly coupled ordinary differential equation systems (LCODEs). The coupling considered here is time-varying in both the network structure and…

动力系统 · 数学 2013-11-12 Xinlei Yi , Wenlian Lu , Tianping Chen

Satellite image composition plays a critical role in remote sensing applications such as data augmentation, disaste simulation, and urban planning. We propose HarmoniDiff-RS, a training-free diffusion-based framework for harmonizing…

计算机视觉与模式识别 · 计算机科学 2026-04-22 Xiaoqi Zhuang , Jefersson A. Dos Santos , Jungong Han

In this paper we report for the first time on the necessity of the refinement of the concept of generalized chaotic synchronization. We show that the state vectors of the interacting chaotic systems being in the generalized synchronization…

混沌动力学 · 物理学 2013-02-19 Alexey A. Koronovskii , Olga I. Moskalenko , Alexander E. Hramov

Recent measurements of the coherent synchrotron radiation (CSR) effects indicated that the observed beam emittance growth and energy modulation are often bigger than previous predictions based on Gaussian longitudinal charge distributions.…

加速器物理 · 物理学 2007-05-23 R. Li

We show that the threshold of complete synchronization in a lattice of coupled non-smooth chaotic maps is determined by linear stability along the directions transversal to the synchronization subspace. We examine carefully the…

混沌动力学 · 物理学 2010-11-25 Rodrigo Frehse Pereira , Sandro Ely de Souza Pinto , Sergio Roberto Lopes

In this paper, we investigate performance improvements of low-power long-range (LoRa) modulation when a gateway is equipped with multiple antennas. We derive the optimal decision rules for both coherent and non-coherent detections when…

信号处理 · 电气工程与系统科学 2021-06-23 The Khai Nguyen , Ha H. Nguyen , Ebrahim Bedeer

We explore the problem of real-time stereo matching on high-res imagery. Many state-of-the-art (SOTA) methods struggle to process high-res imagery because of memory constraints or speed limitations. To address this issue, we propose an…

计算机视觉与模式识别 · 计算机科学 2019-12-17 Gengshan Yang , Joshua Manela , Michael Happold , Deva Ramanan

In this paper we present several techniques for characterizing longitudinal impedances based on transient measurements of the growth rates and tune shifts of unstable coupled-bunch modes. These techniques are applicable to measurement of…

加速器物理 · 物理学 2008-11-26 D. Teytelman , J. Fox , S. Prabhakar , J. Byrd

After a sudden disturbance, the energy balance of generators is disturbed, and the power outputs of synchronous generators vary as their rotor angles shift from their equilibrium points. This trend essentially presents the versatile…

信号处理 · 电气工程与系统科学 2020-01-07 Faycal Znidi , Hamzeh Davarikia , Mohammad Arani , Masoud Barati

This paper aims to review the measure synchronization, a weak form of synchronization observed in coupled Hamiltonian systems, briefly. This synchronization is characterized by a Hamiltonian system that displays either quasiperiodic or…

混沌动力学 · 物理学 2023-11-10 Anupam Ghosh

We investigate the connection between the dynamics of synchronization and the modularity on complex networks. Simulating the Kuramoto's model in complex networks we determine patterns of meta-stability and calculate the modularity of the…

无序系统与神经网络 · 物理学 2009-11-11 Alex Arenas , Albert Diaz-Guilera