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An FPGA Based Solution for Computing a Local Stationarity Measure from Satellite Data

Dan Cristian Turicu, Octavian Cret, Marius Echim, Costel Munteanu
2022 IEEE Access  
This paper describes the implementation of an algorithm for computing a local stationarity measure (LSM) on FPGA devices.  ...  INDEX TERMS FPGA-based design, high-level synthesis (HLS), local stationarity measure (LSM), magnetic field monitoring, satellites on-board processing, weak stationarity test.  ...  An immediate future development is to use the components employed in this study to design an FPGA-based solution for the detection of discontinuities from in-situ data -an important aspect for solar system  ... 
doi:10.1109/access.2022.3143239 fatcat:kiuhr632ffelvbnpyuizcjsplq

A new design for a very low frequency space borne radio interferometer [article]

Divya Oberoi, Jean-Louis Pinçon
2003 arXiv   pre-print
This paper presents the concept design which emerged from a study to investigate the feasibility of a low frequency satellite based interferometer operating in the frequency range 0.1 -- 40 MHz titled  ...  to achieve better polarisation characteristics; direct digitisation of the entire radio frequency band of interest which eliminates the need for a local oscillator system; an overlap in the observing  ...  This research has made use of NASA's Astrophysics Data System Abstract Service.  ... 
arXiv:astro-ph/0312171v1 fatcat:xqtntl74ejaprifadugoq7gyvq

Towards a demonstrator for autonomous object detection on board Gaia

Shan Mignot, Jacobus M. Oschmann, Jr., Mark C. Clampin, Howard A. MacEwen
2010 Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave  
such an endeavour cannot be a solitary one.  ...  Many an intriguing stratagems have been devised by generations of men yearning for such freedom and, alas, of those who have succeeded little remains but awe for their genius or for their folly.  ...  If the poet may with one swift movement of his imagination sweep the reader off his feet to embark at their summons on a voyage to the blinking stars, for the  ... 
doi:10.1117/12.857118 fatcat:5z6jahmhszec3bgsvnmapxudym

TeraHertz Band Communication: An Old Problem Revisited and Research Directions for the Next Decade [article]

Ian F. Akyildiz, Chong Han, Zhifeng Hu, Shuai Nie, Josep M. Jornet
2022 arXiv   pre-print
Terahertz (THz) band communications are envisioned as a key technology for 6G and Beyond. As a fundamental wireless infrastructure, THz communication can boost abundant promising applications.  ...  Furthermore, in this paper, open challenges and new research directions still to be investigated for the THz band communication systems are presented, by covering diverse topics ranging from devices, channel  ...  Based on this VNA method, we have built a 140 GHz channel measurement system with Huawei, enabling the end-toend measurement solutions for an indoor meeting room [126] .  ... 
arXiv:2112.13187v3 fatcat:irt2ivosjncslbenh2fl4kwi54

Design of large polyphase filters in the Quadratic Residue Number System

Gian Carlo Cardarilli, Alberto Nannarelli, Yann Oster, Massimo Petricca, Marco Re
2010 2010 Conference Record of the Forty Fourth Asilomar Conference on Signals, Systems and Computers  
based on local data and on the data exchanged with the neighbors.  ...  We demonstrate the performance of the GPS AOA estimation algorithm for multiple satellites via a computer simulation example.  ... 
doi:10.1109/acssc.2010.5757589 fatcat:ccxnu5owr5fyrcjcqukumerueq

Terahertz Wireless Channels: A Holistic Survey on Measurement, Modeling, and Analysis [article]

Chong Han, Yiqin Wang, Yuanbo Li, Yi Chen, Naveed A. Abbasi, Thomas Kürner, Andreas F. Molisch
2022 arXiv   pre-print
correlation, and time-domain channel measurement based on THz pulses from time-domain spectroscopy (THz-TDS), are introduced and compared.  ...  First, the three most popular THz channel measurement methodologies, namely, frequency-domain channel measurement based on a vector network analyzer (VNA), time-domain channel measurement based on sliding  ...  A comparison for ray-tracing with FDTD in a very small intradevice channel has been presented in [187] . 3) Measurement-based: The measurement-based approach relies on channel measurement along with data  ... 
arXiv:2111.04522v2 fatcat:3rbgp3dscnawrj6qapvblbt4qi

A Survey of Prototype and Experiment for UAV Communications [article]

Qingheng Song, Yong Zeng, Jie Xu, Shi Jin
2020 arXiv   pre-print
For UAV-enabled aerial communication platforms, we present three scenarios, namely UAV-enabled aerial base stations, UAV-enabled aerial relays and UAV-enabled aerial data collection/dissemination.  ...  To facilitate the large-scale usage of UAVs for various applications in practice, we provide a comprehensive survey on the prototype and experiment for UAV communications.  ...  The ABSOLUTE project presented in [97] employed a Helikite to implement an aerial base station, the satellite-based backhaul was adopted.  ... 
arXiv:2007.00905v1 fatcat:ycbbaabegnf57d4p33ysrgbhvy

How can big data and machine learning benefit environment and water management: A survey of methods, applications, and future directions

Alexander Y. Sun, Bridget R Scanlon
2019 Environmental Research Letters  
The authors are grateful to Dr Michael Fienen and an anonymous reviewer for their constructive comments on the original manuscript.  ...  Acknowledgments The authors were partially supported by funding from Jackson School of Geosciences, the University of Texas at Austin.  ...  Each move generates an element (pixel) of the feature map obtained by computing a dot product between the kernel and a local region in the input (or receptive field).  ... 
doi:10.1088/1748-9326/ab1b7d fatcat:vx4thuy45vhlnmhu7bk2hwh2g4

A low-noise, high-dynamic-range, digital receiver for radio astronomy applications: an efficient solution for observing radio-bursts from Jupiter, the Sun, pulsars, and other astrophysical plasmas below 30 MHz

V. B. Ryabov, D. M. Vavriv, P. Zarka, B. P. Ryabov, R. Kozhin, V. V. Vinogradov, L. Denis
2010 Astronomy and Astrophysics  
A new two-channel digital receiver that can be used for observing both stationary and sporadic radio sources in the decameter wave band is presented.  ...  Two examples of using the receiver with the UTR-2 array (Ukraine) are reported: S-bursts from Jupiter and low-frequency wide-band single pulses from the pulsar PSR0809+74  ...  The fixed-point, digital signal processor TMS320C6416 provides an additional computing power, and is used to control the data transfer from the FPGA to the PCI-X controller and perform extra calculations  ... 
doi:10.1051/0004-6361/200913335 fatcat:q6mzvybayrc45edqwczce3yjby

Evaluating the Quality of Experience Performance Metric for UAV-Based Networks

Abdukodir Khakimov, Evgeny Mokrov, Dmitry Poluektov, Konstantin Samouylov, Andrey Koucheryavy
2021 Sensors  
In this work, we consider a UAV-assisted cell in a single user scenario. We consider the Quality of Experience (QoE) performance metric calculating it as a function of the packet loss ratio.  ...  The system consists of two independent blocks, separately emulating connections between the User Equipment (UE) and unmanned aerial vehicle (UAV) and between the UAV and Base station (BS).  ...  Acknowledgments: For the research, infrastructure of the 5G Lab RUDN (Russia) was used. Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/s21175689 pmid:34502580 pmcid:PMC8434049 fatcat:3m23zyigbjghxc3mgvwqfwil6y

Implementation of Fog computing for reliable E-health applications

Razvan Craciunescu, Albena Mihovska, Mihail Mihaylov, Sofoklis Kyriazakos, Ramjee Prasad, Simona Halunga
2015 2015 49th Asilomar Conference on Signals, Systems and Computers  
Specifically, we introduce a concept for sparse joint activity, channel and data detection in the context of the Coded ALOHA (FDMA) protocol.  ...  The final evaluation is done with computer simulation of a multi-cell system.  ...  We consider for the first time the localization of a passive agent node based on a single impedance measurement at a single anchor.  ... 
doi:10.1109/acssc.2015.7421170 dblp:conf/acssc/CraciunescuMMKP15 fatcat:qm6mki5z6bcvrfimkmqjyrxaxm

Performance Analysis of Long Short-Term Memory-based Markovian Spectrum Prediction

Niranjana Radhakrishnan, Sithamparanathan Kandeepan, Xinghuo Yu, Gianmarco Baldini
2021 IEEE Access  
To this end, we analyze the LSTM prediction outputs over simulated Markov-model-based spectrum data and spectrum measurements data.  ...  Dynamic Spectrum Access (DSA) solutions equipped with spectrum prediction can enable proactive spectrum management and tackle the increasing demand for radio frequency (RF) bandwidth.  ...  For instance, in [11] , an LSTM based framework predicts the Power Spectral Density (PSD) values over measured datasets from terrestrial and satellite networks.  ... 
doi:10.1109/access.2021.3125725 fatcat:ahc446r3dfe63la3ky6cyutghy

Ping-pong beam training for reciprocal channels with delay spread

Elisabeth de Carvalho, Jorgen Bach Andersen
2015 2015 49th Asilomar Conference on Signals, Systems and Computers  
The proposed detection scheme does not assume prior knowledge on image statistics and draws all inferences from the data measurements. .  ...  Massive Machine Type Communication characterized by low data-rates and low activity devices requires new physical layer solutions.  ...  We consider for the first time the localization of a passive agent node based on a single impedance measurement at a single anchor.  ... 
doi:10.1109/acssc.2015.7421451 dblp:conf/acssc/CarvalhoA15 fatcat:mqokuvnh3zg45licnfbgxyvxfu

Journal of Computer Science IJCSIS June 2021 Full Volume

2021 Zenodo  
from computer science, mobile & wireless computing, networking and information security.  ...  The core vision of IJCSIS is to promote knowledge and technology advancement for the benefit of academia, professional research communities and industry practitioners.  ...  Local propagation algorithm has computed a concise representation of potential solutions for a given hybrid constraint system and return sets of landmark-based of all variables in HCSP.  ... 
doi:10.5281/zenodo.5556913 fatcat:yineojxcujg4jnvqt6i742dhii

A Data-Driven Approach to Identify Flight Test Data Suitable to Design Angle of Attack Synthetic Sensor for Flight Control Systems

Angelo Lerro, Alberto Brandl, Manuela Battipede, Piero Gili
2020 Aerospace (Basel)  
Results give an evidence of the validity of the methods for the MIDAS project that can be easily adopted for generic synthetic sensor design for flight control system applications.  ...  The second method, called Similar Flight Test Data Pruning (SFDP), deals with data reduction based on the isolation of quasi-unique points.  ...  Moreover, MFPs also provides a measurement of a local flow angle in addition to pressure measurement.  ... 
doi:10.3390/aerospace7050063 fatcat:7cfi6mltbzdshfrg4gd4jj6fei
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