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Migration Routes of Satellite-Tracked Rough-Legged Buzzards from Japan: The Relationship between Movement Patterns and Snow Cover

Noriyuki M. Yamaguchi, Emiko Hiraoka, Naoya Hijikata, Hiroyoshi Higuchi
2017 Ornithological science  
Output from an experimental automated snow and ice mapping algorithm for North America, using visible and infrared imagery from NOAA's Geostationary Operational Environmental Satellite Imager and microwave  ...  This paper presents a brief overview of the current IMS and its near future prospects.  ... from the NOAA/NESDIS Operational Significant Event Imagery Team for processing of the AVHRR/3 Channel 3A imagery, and to Dorothy Hall (, NASA/GSFC, for information  ... 
doi:10.2326/osj.16.33 fatcat:jquq4bu7prh2jlalhotbyinkee

Performance analysis of polar-code transmission experiments over 7.8-km terrestrial free-space optical link using channel equalization

Shingo Fujia, E. Okamoto, H. Takenaka, H. Kunimori, H. Endo, M. Fujiwara, R. Shimizu, M. Sasaki, M. Toyoshima, Zoran Sodnik, Bruno Cugny, Nikos Karafolas
2021 International Conference on Space Optics — ICSO 2020  
Our experimental results revealed the advantage of polar codes over LDPC codes when channel state information (CSI) was not available.  ...  Performance analysis of polar-code transmission experiments over 7.8-km terrestrial free-space optical link using channel equalization," ABSTRACT Satellite laser communication is a promising solution to  ...  Section 3 details the atmospheric fluctuation model, which is typical for optical satellite communications.  ... 
doi:10.1117/12.2599963 fatcat:grbb2pdoxrcmxpjiotugzveysy

QEYSSAT: a mission proposal for a quantum receiver in space

T. Jennewein, J. P. Bourgoin, B. Higgins, C. Holloway, E. Meyer-Scott, C. Erven, B. Heim, Z. Yan, H. Hübel, G. Weihs, E. Choi, I. D'Souza (+6 others)
2014 Advances in Photonics of Quantum Computing, Memory, and Communication VII  
over high transmission losses and over a rapidly fluctuating channel.  ...  Figure 5 : 5 Fluctuations of count rates (a) and the QBER (b) for transmission of entangled photons over a 1 km free-space channel.  ... 
doi:10.1117/12.2041693 fatcat:si5ahk4ldjdelkaesv5blhoyhu

Strategies for achieving high key rates in satellite-based QKD

Sebastian Ecker, Bo Liu, Johannes Handsteiner, Matthias Fink, Dominik Rauch, Fabian Steinlechner, Thomas Scheidl, Anton Zeilinger, Rupert Ursin
2021 npj Quantum Information  
We therefore propose a model-based optimization of link parameters based on current channel and receiver conditions.  ...  This model and our field test will prove helpful in the design and operation of future satellite missions and advance the distribution of secret keys at high rates on a global scale.  ...  The link loss is influenced by the elevation angle of the satellite and ranges from 60 dB to 80 dB. For two Fig. 2 Sketch of the experimental setup.  ... 
doi:10.1038/s41534-020-00335-5 fatcat:hrxp6itzovdwbptg5zmw2umsu4

The COST 271 Action: conclusions and the way ahead

B. Zolesi, L. R. Cander
2004 Annals of Geophysics  
A brief summary is given of the major achievements of the COST 271 Action.  ...  New challenges have been identified that open the way for a proposal, which is outlined, for a follow-on to the COST 271 Action within the COST Telecommunications, Information Science and Technology framework  ...  -High-latitude scintillation effects: experimental work and modelling. -Equatorial scintillation effects: experimental work and modelling.  ... 
doi:10.4401/ag-3301 doaj:4aadfc0b861e4d8691988314677c2f6b fatcat:z5tvg2ole5er7mn7g4w3qaioey

EarthNet2021: A large-scale dataset and challenge for Earth surface forecasting as a guided video prediction task [article]

Christian Requena-Mesa, Vitus Benson, Markus Reichstein, Jakob Runge, Joachim Denzler
2021 arXiv   pre-print
Satellite images are snapshots of the Earth surface. We propose to forecast them. We frame Earth surface forecasting as the task of predicting satellite imagery conditioned on future weather.  ...  Additionally we frame EarthNet2021 as a challenge allowing for model intercomparison. Resulting forecasts will greatly improve (>x50) over the spatial resolution found in numerical models.  ...  Experimental design, dataset creation pipeline, EarthNet toolkit package, baseline channel-net model, website, documentation, manuscript. M.R.  ... 
arXiv:2104.10066v1 fatcat:w6fg5gzhmvdr5ank4jfhbustg4

Performance Analysis of DPSK Optical Communication for LEO-to-Ground Relay Link Via a GEO Satellite

Hyung-Chul Lim, Jong Uk Park, Mansoo Choi, Chul-Sung Choi, Jae-Dong Choi, Jongah Kim
2020 Journal of Astronomy and Space Sciences  
and channel capacity.  ...  In this study, the performance of inter-satellite communication links and downlinks was investigated for the new Korean experimental communication system in terms of link margin, bit error rate (BER),  ...  ACKNOWLEDGEMENTS This work was supported by the Korea Astronomy and Space Science Institute through the "Operation of Ground Based Laser Ranging System" project funded by the Ministry of Science and ICT  ... 
doi:10.5140/jass.2020.37.1.11 doaj:e311c64835b74e038898efa9b2ea4afe fatcat:dhe6l36cvfdvhfoks5465sigpi

Transport protocols for Internet-compatible satellite networks

T.R. Henderson, R.H. Katz
1999 IEEE Journal on Selected Areas in Communications  
A key part of the experimental method is the use of traffic models empirically derived from Internet traffic traces.  ...  Through analysis, simulation, and experiments, we quantify the performance of state-of-the-art TCP implementations in a satellite environment.  ...  We are grateful to Bruce Mah and Steve Gribble for providing HTTP traffic trace data.  ... 
doi:10.1109/49.748815 fatcat:dvimd4kbuneebhxp2npxle3z3e

An optimized initialization for LDPC decoding over GF(q) in impulsive noise environments

Haoqiang Liu, Hongbo Zhao, Xiaowen Chen, Wenquan Feng
2021 PLoS ONE  
Modern navigation satellite communication has the characteristic of high transmitting rate.  ...  To verify the performance of the proposed initialization, extensive experiments are performed in terms of convergence, validity, and robustness.  ...  We investigate the problem of LDPC decoding in impulsive noise environments for navigation communication and formalize the impulsive noise as the Class A noise model. 2.  ... 
doi:10.1371/journal.pone.0250930 pmid:33956886 pmcid:PMC8101722 fatcat:jnrvgssnxzeevkgqsufra5wmse

Development of the Technology to Identify Firebreak Plowing Objects Based on the Satellite Data of the Earth Remote Sensing

Eugene A. Maltsev
2017 Journal of Siberian Federal University Engineering & Technologies  
This work describes the technology to identify firebreak plowing objects based on the satellite data of the Earth Remote Sensing within the medium and high special resolution. Citation: Maltsev E.A.  ...  Development of the technology to identify firebreak plowing objects based on the satellite data of the earth remote sensing,  ...  Experimental Research over Technology of FPO Identification Pursuant to main stages of the technology the expert selected the input satellite ERS data with the value of cloudiness being 5% using the catalogue  ... 
doi:10.17516/1999-494x-2017-10-6-812-818 fatcat:d2cszi4hefa3vlzkkpl6sfqqbi

The Technology to Identify Firebreak Plowing Objects Based on the Satellite Data of the Earth Remote Sensing

Evgenii A. Maltsev, Yuri A. Maglinets, Gennady M. Tsibulskii, G.M. Tsibulsky, M.V. Noskov, E.A. Lupyan, L.G. Sverdlik, A.K. Sagatelian, V.I. Kharuk, V.B. Kashkin
2019 E3S Web of Conferences  
The technology uses a model of the firebreak plowing object, vegetation indexes and spatial relations between objects.  ...  This work describes the technology to identify firebreak plowing objects of agriculture fields based on the satellite data of the Earth Remote Sensing within the medium and high spatial resolution.  ...  Experimental research has been completed over the proposed technology within the agricultural areas of Krasnoyarsk Territory.  ... 
doi:10.1051/e3sconf/20197501006 fatcat:jc2cnqbwvncxjfl2pbv5ep6xbm

Mobile internet access using satellite networks

P. Loreti, M. Luglio, R. Kapoor, J. Stepanek, M. Gerla, F. Vatalaro, M. A. Vazquez-Castro
2004 International Journal of Satellite Communications And Networking  
To this end, we develop a satellite channel propagation model that includes shadowing from surrounding building skylines based on actual data in a built-up area.  ...  Using these tools, we analyse various Internet applications and the performance of various TCP schemes in different topologies.  ...  We also performed simulations for HTTP (version 1.0) transfer over TCP Tahoe for the inclined constellation to get a comparative analysis between the ideal channel and the mobile channel.  ... 
doi:10.1002/sat.779 fatcat:xtbpukv7rvb2pm4mqsio4swvsy

A Cloud Classification Method Based on a Convolutional Neural Network for FY-4A Satellites

Yuhang Jiang, Wei Cheng, Feng Gao, Shaoqing Zhang, Shudong Wang, Chang Liu, Juanjuan Liu
2022 Remote Sensing  
The classification development relies heavily on human recourses and does not fully utilize the data-driven advantages of computer models.  ...  The experimental results show that the CLP-CNN network can complete a cloud classification task of 800 × 800 pixels in 0.9 s.  ...  Acknowledgments: The authors would like to thank the China National Satellite Meteorological Center, the Himawari-8 data website, and the CloudSat data website, which are freely accessible to the public  ... 
doi:10.3390/rs14102314 fatcat:6wlhiehr6rc3rjiac3fae6g3d4

Retrieval of aerosol optical depth from satellite measurements using single- and dual-view algorithms

Gerrit de Leeuw, Cristina R. Gonzalez, Jolanta Kusmierczyk-Michulec, Rob Decae, Pepijn Veefkind, Klaus P. Schaefer, Olga Lado-Bordowsky, Adolfo Comeron, Richard H. Picard
2003 Remote Sensing of Clouds and the Atmosphere VII  
The AOD at wavelengths in the UV can be determined both over water and over land, using the same principle of a dark surface.  ...  This principle has been used for the retrieval ofaerosol optical depth (AOD) over water from satellite observations in the near-infrared.  ...  Modeling work on LOTOS is undertaken with Peter Builtjes, Maarten van Loon and Martijn Schaap (TNO-MEP) and on TM3 with Peter van Velthoven, Ge Verver and Bas Henzing (KNMI).  ... 
doi:10.1117/12.462574 fatcat:k24nvwytfzdlblszn3lkwso5nm

The Brazilian wide field imaging camera (WFI) for the China/Brazil earth resources satellite: CBERS 3 and 4

S. H. Evangelista, A. G. Santos, L. C. N. Scaduto, E. G. Carvalho, R. G. Modugno, R. Cartolano, D. Segoria, M. A. Stefani, J. C. Castro Neto, Naoto Kadowaki
2018 International Conference on Space Optics — ICSO 2010  
The purpose of this paper is to present the optical system developed for the Wide Field imaging Camera -WFI that will be integrated to the CBERS 3 and 4 satellites (China Brazil Earth resources Satellite  ...  In particular, we will present the optical analysis based on the Modulation Transfer Function (MTF) obtained during the Engineering Model phase (EM) and the optical tests performed to evaluate the requirements  ...  Three satellites of this program (CBERS 1, 2 and 2B) were already launched and satisfactory results were obtained.  ... 
doi:10.1117/12.2309103 fatcat:mggoev53vffw5anj2mqbyaoody
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