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Diagnosing free electron laser (FEL) polarization is critical for polarization-modulated research such as x-ray free electron laser (XFEL) diffraction imaging and probing material magnetism. In an electron time-of-flight (eTOF)\…

仪器与探测器 · 物理学 2021-11-24 Zipeng Liu , Bangjie Deng , Haixiao Deng , Bo Liu

Pretrained diffusion models (DMs) have recently been popularly used in solving inverse problems (IPs). The existing methods mostly interleave iterative steps in the reverse diffusion process and iterative steps to bring the iterates closer…

机器学习 · 计算机科学 2024-11-07 Hengkang Wang , Xu Zhang , Taihui Li , Yuxiang Wan , Tiancong Chen , Ju Sun

Accurate blur estimation is essential for high-performance imaging across various applications. Blur is typically represented by the point spread function (PSF). In this paper, we propose a physics-informed PSF learning framework for…

计算机视觉与模式识别 · 计算机科学 2025-03-12 Liqun Chen , Yuxuan Li , Jun Dai , Jinwei Gu , Tianfan Xue

In this paper, we investigate the design of a novel multicarrier (MC) modulation on delay-Doppler (DD) plane, to couple the modulated signal with a doubly-selective channel having DD resolutions. A key challenge for the design of DD plane…

信息论 · 计算机科学 2022-06-28 Hai Lin , Jinhong Yuan

This paper introduces MipSLAM, a frequency-aware 3D Gaussian Splatting (3DGS) SLAM framework capable of high-fidelity anti-aliased novel view synthesis and robust pose estimation under varying camera configurations. Existing 3DGS-based SLAM…

计算机视觉与模式识别 · 计算机科学 2026-03-24 Yingzhao Li , Yan Li , Shixiong Tian , Yanjie Liu , Lijun Zhao , Gim Hee Lee

Accurate astrometry and photometry of saturated and coronagraphic point spread functions (PSFs) are fundamental to both ground- and space-based high contrast imaging projects. For ground-based adaptive optics imaging, differential…

天体物理学 · 物理学 2008-11-26 C. Marois , D. Lafreniere , B. Macintosh , R. Doyon

Distributed multiple-input multiple-output (D-MIMO) is a promising technology for simultaneous communication and positioning. However, phase synchronization between multiple access points in D-MIMO is challenging and methods that function…

The rapid adaptation of data driven AI models, such as deep learning inference, training, Vision Transformers (ViTs), and other HPC applications, drives a strong need for runtime precision configurable different non linear activation…

硬件体系结构 · 计算机科学 2026-02-12 Mukul Lokhande , Gopal Raut , Santosh Kumar Vishvakarma

Point cloud few-shot semantic segmentation (PC-FSS) aims to segment targets of novel categories in a given query point cloud with only a few annotated support samples. The current top-performing prototypical learning methods employ…

计算机视觉与模式识别 · 计算机科学 2024-08-27 Zhaoyang Li , Yuan Wang , Wangkai Li , Rui Sun , Tianzhu Zhang

Conventional shape sensing techniques using Fiber Bragg Grating (FBG) involve finding the curvature at discrete FBG active areas and integrating curvature over the length of the continuum dexterous manipulator (CDM) for tip position…

机器人学 · 计算机科学 2018-12-21 Shahriar Sefati , Rachel Hegeman , Farshid Alambeigi , Iulian Iordachita , Mehran Armand

Injecting magnetized plasma with changes in magnetization or injection rate necessitate a time variable magnetic field at the boundary of the simulation box. Naive implementation will lead to electromagnetic precursor waves that can affect…

等离子体物理 · 物理学 2017-11-22 Patrick Kilian , Felix Spanier

Many smartphone applications use inertial measurement units (IMUs) to sense movement, but the use of these sensors for pedestrian localization can be challenging due to their noise characteristics. Recent data-driven inertial odometry…

机器人学 · 计算机科学 2021-02-09 Scott Sun , Dennis Melamed , Kris Kitani

Computationally removing the motion blur introduced by camera shake or object motion in a captured image remains a challenging task in computational photography. Deblurring methods are often limited by the fixed global exposure time of the…

图像与视频处理 · 电气工程与系统科学 2022-04-18 Cindy M. Nguyen , Julien N. P. Martel , Gordon Wetzstein

There is considerable interest in the application of quantum information science to advance computations in plasma physics. Many of the topics in fusion plasma physics are classical in nature. In order to implement them on quantum computers…

等离子体物理 · 物理学 2024-06-12 Abhay K. Ram , George Vahala , Linda Vahala , Min Soe

In the 6G era, space-air-Ground integrated networks (SAGIN) are anticipated to deliver global coverage, necessitating support for a diverse array of emerging applications in high-mobility, hostile environments. Under such conditions,…

信息论 · 计算机科学 2023-07-20 Weijie Yuan , Shuangyang Li , Zhiqiang Wei , Yuanhao Cui , Jiamo Jiang , Haijun Zhang , Pingzhi Fan

The performance of Zak-OTFS modulation is critically dependent on the choice of the delay-Doppler (DD) domain pulse shaping filter. The design of pulses for $L^2(\mathbb{R})$ is constrained by the Balian-Low Theorem, which imposes an…

信息论 · 计算机科学 2025-10-21 Fathima Jesbin , Ananthanarayanan Chockalingam

Optical soliton pulses offer many applications within optical communication systems, but by definition a soliton is only subjected to second-order anomalous group-velocity-dispersion; an understanding of higher-order dispersion is necessary…

光学 · 物理学 2015-06-12 Matthew Marko , Andrzej Veitia , Xiujian Li , Jiangjun Zheng , Cheewei Wong

Long-distance measurements (10 m - 1000 m) with an accuracy of 10-7 is a challenge for many applications. We show that it is achievable with Frequency Shifted Feedback (FSF) laser interferometry technique, provided that the determination of…

光学 · 物理学 2015-06-05 Jean-Paul Pique

A front-end waveform digitization data acquisition system prototype for pulsed magnetic field generator in inertial confinement fusion is described. The pulse magnetic field is created by discharging a high-voltage capacitor through a small…

仪器与探测器 · 物理学 2018-06-12 Zhou He , Lian Chen , Feng Li , Weigang Yin , Ge Jin

The performance of GPS receivers with vector delay-locked tracking loop (VDLL) structure over a land mobile satellite (LMS) channel model for the simulation of multipath fading transmission is investigated. We apply vector delay-locked…

信号处理 · 电气工程与系统科学 2019-11-01 Jia-Chyi Wu , Dah-Jing Jwo , Chun-Yu Liu
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