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Ka-band low-Earth-orbit (LEO) downlinks can suffer second-scale reliability collapses during flare-driven ionospheric disturbances, where fixed fade margins and reactive adaptive coding and modulation (ACM) are either overly conservative or…

信号处理 · 电气工程与系统科学 2026-01-06 Houtianfu Wang , Haofan Dong , Hanlin Cai , Ozgur B. Akan

We survey recent progress achieved in understanding the impact of inelastic processes on coherent backscattering of light from cold atoms that are saturated by a powerful laser field.

量子物理 · 物理学 2009-11-13 Vyacheslav Shatokhin , Thomas Wellens , Cord Müller , Andreas Buchleitner

This review provides an overview of many recent advances in detector technologies for particle physics experiments. Challenges for new technologies include increasing spatial and temporal sensitivity, speed, and radiation hardness while…

仪器与探测器 · 物理学 2010-03-16 James E. Brau

This paper proposes a joint communication and indoor positioning (JCP) system based on visible light communication (VLC) designed for high-precision indoor environments. The framework supports 2D and 3D positioning using received signal…

信号处理 · 电气工程与系统科学 2025-08-07 A. Tarik Leblebici , Sumeyra Hassan , Erdal Panayirci , H. Vincent Poor

More than twenty institutes join the FCAL Collaboration in study of design of the very forward region of a detector for ILC and CLIC. Of particular importance is an accurate luminosity measurement to the level of 10-3, a requirement driven…

LiDAR-based vision systems are integral for 3D object detection, which is crucial for autonomous navigation. However, they suffer from performance degradation in adverse weather conditions due to the quality deterioration of LiDAR point…

计算机视觉与模式识别 · 计算机科学 2025-02-18 Xun Huang , Ziyu Xu , Hai Wu , Jinlong Wang , Qiming Xia , Yan Xia , Jonathan Li , Kyle Gao , Chenglu Wen , Cheng Wang

Visible Light Communication (VLC) is emerging as a means to network computing devices that ameliorates many hurdles of radio-frequency (RF) communications, for example, the limited available spectrum. Enabling VLC in wearable computing,…

网络与互联网体系结构 · 计算机科学 2018-03-26 Ambuj Varshney , Luca Mottola , Thiemo Voigt

The first part of the physics programme of the integrated FCC (Future Circular Colliders) proposal includes measurements of Standard Model processes in $e^+e^-$ collisions (FCC-ee) with an unprecedented precision. In particular, the…

高能物理 - 实验 · 物理学 2019-10-31 Georgios Voutsinas , Emmanuel Perez , Mogens Dam , Patrick Janot

The cosmic neutrino background is a key prediction of Big Bang cosmology which has not been observed yet. The movement of the earth through this neutrino bath creates a force on a pendulum, as if it was exposed to a cosmic wind. We revise…

宇宙学与河外天体物理 · 物理学 2017-07-04 Valerie Domcke , Martin Spinrath

This paper presents an analysis of the asymmetric relaying system which provides communication between hybrid outdoor sub-system and indoor visible light communications (VLC) access points. The outdoor sub-system represents a hybrid…

网络与互联网体系结构 · 计算机科学 2022-09-23 Milica Petkovic , Aleksandra Cvetkovic , Milan Narandzic

When scientific experiments require transmission of powerful laser or radio beams through the atmosphere the Federal Aviation Administration (FAA) requires that precautions be taken to avoid inadvertent illumination of aircraft. Here we…

天体物理仪器与方法 · 物理学 2015-05-14 W. A. Coles , T. W. Murphy , J. F. Melser , J. K. Tu , G. A. White , K. H. Kassabian , K. Bales , B. B. Baumgartner

While multi-modal 3D semantic occupancy prediction typically enhances robustness by fusing camera and LiDAR inputs, its effectiveness is fundamentally constrained by environmental variability. Specifically, camera sensors suffer from severe…

计算机视觉与模式识别 · 计算机科学 2026-05-18 A. Enes Doruk , Abdelaziz Hussein , Hasan F. Ates

The Earth's atmosphere is comprised of turbulent layers that result in speckled and blurry images from ground-based visible and infrared observations. Adaptive Optics (AO) systems are employed to measure the perturbed wavefront with a…

Lightning, a common feature of severe meteorological conditions, poses significant risks, from direct human injuries to substantial economic losses. These risks are further exacerbated by climate change. Early and accurate prediction of…

机器学习 · 计算机科学 2026-02-17 Md Sultanul Arifin , Abu Nowshed Sakib , Yeasir Rayhan , Tanzima Hashem

The GREAT observations need frequency-selective calibration across the passband for the residual atmospheric opacity at flight altitude. At these altitudes the atmospheric opacity has both narrow and broad spectral features. To determine…

天体物理仪器与方法 · 物理学 2012-03-09 Xin Guan , Jürgen Stutzki , Urs U. Graf , Rolf Güsten , Yoko Okada , Miguel Angel Requena Torres , Robert Simon , Helmut Wiesemeyer

Foreground removal presents a significant obstacle in both current and forthcoming intensity mapping surveys. While numerous techniques have been developed that show promise in simulated datasets, their efficacy often diminishes when…

宇宙学与河外天体物理 · 物理学 2024-08-14 Jiacheng Ding , Xin Wang , Ue-Li Pen , Xiao-Dong Li

Coupled-bunch instabilities excited by the interaction of the particle beam with its surroundings can seriously limit the performance of circular particle accelerators. These instabilities can be cured by the use of active feedback systems…

加速器物理 · 物理学 2016-01-21 M. Lonza , H. Schmickler

A good and robust sensor data fusion in diverse weather conditions is a quite challenging task. There are several fusion architectures in the literature, e.g. the sensor data can be fused right at the beginning (Early Fusion), or they can…

计算机视觉与模式识别 · 计算机科学 2024-10-30 Andreas Pfeuffer , Klaus Dietmayer

Precise and reliable climate projections are required for climate adaptation and mitigation, but Earth system models still exhibit great uncertainties. Several approaches have been developed to reduce the spread of climate projections and…

Autonomous vehicles (AVs) rely on environment perception and behavior prediction to reason about agents in their surroundings. These perception systems must be robust to adverse weather such as rain, fog, and snow. However, validation of…

机器人学 · 计算机科学 2022-03-29 Harrison Delecki , Masha Itkina , Bernard Lange , Ransalu Senanayake , Mykel J. Kochenderfer