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In terahertz (THz) massive multiple-input multiple-output (MIMO) systems, the combination of huge bandwidth and massive antennas results in severe beam split, thus making the conventional phase-shifter based hybrid precoding architecture…

Information Theory · Computer Science 2022-11-29 Jiabao Gao , Caijun Zhong , Geoffrey Ye Li , Joseph B. Soriaga , Arash Behboodi

Currently, numerous remote sensing satellites provide a huge volume of diverse earth observation data. As these data show different features regarding resolution, accuracy, coverage, and spectral imaging ability, fusion techniques are…

Image and Video Processing · Electrical Eng. & Systems 2018-10-29 Hossein Bagheri , Michael Schmitt , Pablo d'Angelo , Xiao Xiang Zhu

Stereo matching of high-resolution satellite images (HRSI) is still a fundamental but challenging task in the field of photogrammetry and remote sensing. Recently, deep learning (DL) methods, especially convolutional neural networks (CNNs),…

Computer Vision and Pattern Recognition · Computer Science 2023-05-03 Shenhong Li , Sheng He , San Jiang , Wanshou Jiang , Lin Zhang

The Square Kilometre Array (SKA) project consists of delivering two largest radio telescope arrays being built by the SKA Observatory (SKAO), which is an intergovernmental organization bringing together nations from around the world with…

Instrumentation and Methods for Astrophysics · Physics 2022-10-03 Tao An , Xiaocong Wu , Baoqiang Lao , Shaoguang Guo , Zhijun Xu , Weijia Lv , Yingkang Zhang , Zhongli Zhang

Pulsar data analysis pipelines have historically been comprised of bespoke software systems, supporting the off-line analysis of data. However modern data acquisition systems are making off-line analyses impractical. They often output…

Instrumentation and Methods for Astrophysics · Physics 2018-10-16 R. J. Lyon , B. W. Stappers , L. Levin , M. B. Mickaliger , A. Scaife

Hyperspectral 3D imaging captures both depth maps and hyperspectral images, enabling comprehensive geometric and material analysis. Recent methods achieve high spectral and depth accuracy; however, they require long acquisition times often…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Suhyun Shin , Seungwoo Yoon , Ryota Maeda , Seung-Hwan Baek

This article presents a new Domain Specific Embedded Language (DSEL) dedicated to Software-Defined Radio (SDR). From a set of carefully designed components, it enables to build efficient software digital communication systems, able to take…

Computation and Language · Computer Science 2022-08-04 Adrien Cassagne , Romain Tajan , Olivier Aumage , Camille Leroux , Denis Barthou , Christophe Jégo

We present a foundational, scalable algorithm architecture for processing data from aperture synthesis radio telescopes. The analysis leading to the architecture is rooted in the theory of aperture synthesis, signal processing and numerical…

Instrumentation and Methods for Astrophysics · Physics 2026-04-28 S. Bhatnagar , U. Rau , M. Hsieh , J. Kern , R. Xue

We describe principal components of the new spectroscopic data pipeline for the multi-object MMT/Magellan Infrared Spectrograph (MMIRS). The pipeline is implemented in IDL and C++. The performance of the data processing algorithms is…

Instrumentation and Methods for Astrophysics · Physics 2012-12-18 Igor Chilingarian , Warren Brown , Daniel Fabricant , Brian McLeod , John Roll , Andrew Szentgyorgyi

The last decades have seen a surge of interests in distributed computing thanks to advances in clustered computing and big data technology. Existing distributed algorithms typically assume {\it all the data are already in one place}, and…

Machine Learning · Computer Science 2019-05-07 Donghui Yan , Yingjie Wang , Jin Wang , Guodong Wu , Honggang Wang

Physical reservoir computing (PRC) is a promising brain-inspired computing architecture for overcoming the von Neumann bottleneck by utilizing the intrinsic dynamics of physical systems. However, a major obstacle to its real-world…

Emerging Technologies · Computer Science 2026-03-06 Jiaxuan Chen , Ryo Iguchi , Sota Hikasa , Takashi Tsuchiya

Spectrum resources are facing huge demands and cognitive radio (CR) can improve the spectrum utilization. Recently, power spectral density (PSD) map is defined to enable the CR to reuse the frequency resources regarding to the area. For…

Information Theory · Computer Science 2016-12-12 Mohammad Eslami , Farah Torkamani-Azar , Esfandiar Mehrshahi

Next generation radio interferometric telescopes are entering an era of big data with extremely large data sets. While these telescopes can observe the sky in higher sensitivity and resolution than before, computational challenges in image…

Instrumentation and Methods for Astrophysics · Physics 2019-12-17 Luke Pratley , Jason D. McEwen , Mayeul d'Avezac , Xiaohao Cai , David Perez-Suarez , Ilektra Christidi , Roland Guichard

The Wide Field Survey Telescope (WFST) is a dedicated photometric surveying facility built jointly by the University of Science and Technology of China (USTC) and the Purple Mountain Observatory (PMO). Since many of its scientific…

Instrumentation and Methods for Astrophysics · Physics 2026-01-26 Minxuan Cai , Zelin Xu , Lulu Fan , Zhen Wan , Binyang Liu , Xu Kong , Weida Hu , Lei Hu , Qing-feng Zhu , Guoliang Li , Jie Lin , Min Fang , Ji-an Jiang , Yongquan Xue , Xianzhong Zhen , Tinggui Wang

There are more than 80,000 character categories in Chinese while most of them are rarely used. To build a high performance handwritten Chinese character recognition (HCCR) system supporting the full character set with a traditional…

Computer Vision and Pattern Recognition · Computer Science 2023-05-26 Dongnan Gui , Kai Chen , Haisong Ding , Qiang Huo

Considering the expensive radio frequency (RF) chain, huge training overhead and feedback burden issues in massive MIMO, in this letter, we propose a mixed-timescale per-group hybrid precoding (MPHP) scheme under an adaptive…

Signal Processing · Electrical Eng. & Systems 2018-03-22 Yinglei Teng , Min Wei , An Liu , Vincent Lau , Yong Zhang

Data stream processing systems (DSPSs) enable users to express and run stream applications to continuously process data streams. To achieve real-time data analytics, recent researches keep focusing on optimizing the system latency and…

Databases · Computer Science 2024-06-18 Shuhao Zhang , Feng Zhang , Yingjun Wu , Bingsheng He , Paul Johns

The observation and research of the solar radio emission have unique scientific values in solar and space physics and related space weather forecasting applications, since the observed spectral structures may carry important information…

Instrumentation and Methods for Astrophysics · Physics 2017-09-20 Qing-Fu Du , Lei Chen , Yue-Chang Zhao , Xin Li , Yan Zhou , Jun-Rui Zhang , Fa-Bao Yan , Shi-Wei Feng , Chuan-Yang Li , Yao Chen

The Dragonfly Spectral Line Mapper (DSLM) is a semi-autonomous, distributed-aperture based telescope design, featuring a modular setup of 120 Canon telephoto lenses, and equal numbers of ultra-narrowband filters, detectors, and other…

Instrumentation and Methods for Astrophysics · Physics 2024-06-24 Imad Pasha , Seery Chen , Deborah Lokhorst , William P. Bowman , Zili Shen , Qing Liu , Evgeni I. Malakhov , Roberto Abraham , Pieter G. van Dokkum