Articles with "satellite ground" as a keyword



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Theoretical analysis and experimental study of constraint boundary conditions for acquiring the beacon in satellite–ground laser communications

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Published in 2017 at "Optics Communications"

DOI: 10.1016/j.optcom.2017.06.076

Abstract: Abstract Acquisition and recognition for the beacon is the core technology of establishing the satellite optical link. In order to acquire the beacon correctly, the beacon image should be recognized firstly, excluding the influence of… read more here.

Keywords: laser; satellite ground; laser communications; beacon ... See more keywords
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Synergy of Satellite‐ and Ground‐Based Aerosol Optical Depth Measurements Using an Ensemble Kalman Filter Approach

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Published in 2020 at "Journal of Geophysical Research"

DOI: 10.1029/2019jd031884

Abstract: Satellite‐ and ground‐based remote sensing are two widely used techniques to measure aerosol properties. However, neither is perfect in that satellite retrievals suffer from various sources of uncertainties, and ground observations have limited spatial coverage.… read more here.

Keywords: ground; ground based; kalman filter; aerosol optical ... See more keywords
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Satellite-to-ground optical communications using small optical transponder (SOTA) – received-power fluctuations

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Published in 2017 at "Optics Express"

DOI: 10.1364/oe.25.028319

Abstract: In this paper, experimental results related to the received-power fluctuations in a LEO satellite-to-ground laser-communication link using the Small Optical TrAnsponder (SOTA) are presented. The data is compared to the theoretical expectations based on the… read more here.

Keywords: optical transponder; received power; satellite ground; small optical ... See more keywords
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Accurate beacon positioning method for satellite-to-ground optical communication.

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Published in 2017 at "Optics express"

DOI: 10.1364/oe.25.030996

Abstract: In satellite laser communication systems, accurate positioning of the beacon is essential for establishing a steady laser communication link. For satellite-to-ground optical communication, the main influencing factors on the acquisition of the beacon are background… read more here.

Keywords: ground optical; communication; optical communication; satellite ground ... See more keywords
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Synchronization using quantum photons for satellite-to-ground quantum key distribution.

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Published in 2021 at "Optics express"

DOI: 10.1364/oe.433631

Abstract: Time synchronization is crucial for quantum key distribution (QKD) systems. In order to compensate for the time drift caused by the Doppler effect and adapt to the unstable optical link in satellite-to-ground QKD, previous demonstrations… read more here.

Keywords: synchronization; satellite ground; quantum key; key distribution ... See more keywords
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Total Ozone Trends in East Asia from Long-Term Satellite and Ground Observations

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Published in 2021 at "Atmosphere"

DOI: 10.3390/atmos12080982

Abstract: The ozone concentration in the atmosphere has been recovering with the reduction in atmospheric ozone-depleting substances (ODS). However, ODS remain in the atmosphere for long periods, slowing recovery. Furthermore, greenhouse gas-induced climate change complicates ozone… read more here.

Keywords: climate; east asia; satellite ground; ozone ... See more keywords
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On-Demand Anonymous Access and Roaming Authentication Protocols for 6G Satellite–Ground Integrated Networks

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Published in 2023 at "Sensors"

DOI: 10.3390/s23115075

Abstract: Satellite–ground integrated networks (SGIN) are in line with 6th generation wireless network technology (6G) requirements. However, security and privacy issues are challenging with heterogeneous networks. Specifically, although 5G authentication and key agreement (AKA) protects terminal… read more here.

Keywords: authentication; ground integrated; roaming authentication; satellite ground ... See more keywords
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Comparison of EEJ Longitudinal Variation from Satellite and Ground Measurements over Different Solar Activity Levels

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Published in 2021 at "Universe"

DOI: 10.3390/universe7020023

Abstract: The longitudinal variability and local time of equatorial electrojet (EEJ) current using simultaneous data recorded by ground and satellite magnetometers at different levels of solar activity were investigated. In this study, we used data from… read more here.

Keywords: satellite ground; ground data; ground; solar activity ... See more keywords
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Classification of Meteorological Satellite Ground System Applications

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Published in 2017 at "Applied Categorical Structures"

DOI: 10.4236/acs.2017.73028

Abstract: Meteorological satellite ground application system carries a large number of applications. These applications deal with a variety of tasks. In order to classify these applications according to the resource consumption and improve the rational allocation… read more here.

Keywords: satellite ground; meteorological satellite; system; resource consumption ... See more keywords