Results 21 to 30 of about 1,621,990 (261)
Improved Multi-GNSS PPP Software for Upgrading the DEMETRA Project Time Monitoring Service
Sensors, 2019 The H2020 DEMETRA project provides short latency clock monitoring services to the time users using the Atomium precise point positioning (PPP) software developed by the Royal Observatory of Belgium.
Wei Huang +3 more
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Navigation, 2023 There is growing interest in designing a future lunar navigation satellite system (LNSS) while utilizing a SmallSat platform. However, many design decisions, e.g., regarding the satellite clock and lunar orbit, are yet to be finalized. In our prior work,
Sriramya Bhamidipati +2 more
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Modelling and Assessment of Single-Frequency PPP Time Transfer with BDS-3 B1I and B1C Observations
Remote Sensing, 2022 BDS-3 is now providing global positioning, navigation and timing (PNT) services. BDS-3 has new B1C, B2a and B2b signals compared to BDS-2. This work presents two single-frequency (SF) PPP time transfer models using BDS-3, B1C and B1I observations, and ...
Shengli Wang +5 more
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Study of Fast and Reliable Time Transfer Methods Using Low Earth Orbit Enhancement
Remote SensingThe Global Navigation Satellite System (GNSS) can be utilized for long-distance and high-precision time transmission. With the ongoing development of low Earth orbit (LEO) satellites and the rapidly changing geometric relationships between them, the ...
Mingyue Liu +6 more
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Improving the day-boundary discontinuities in BDS-3 carrier-phase time and frequency transfer
Geo-spatial Information ScienceThe BeiDou global satellite navigation system (BDS) is an important tool for precise remote time and frequency transfer. The current day-boundary discontinuity in the data process of the BDS-3 carrier phase (CP) time transfer limits the exploitation of ...
Pengfei Zhang +4 more
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IEEE Photonics Journal, 2020 The data transmission between 5G floating base stations will be an important application area of the free space optical (FSO) link, but the problem of atmospheric disturbance will directly affect the application effect.
Xiaonan Yu +10 more
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Real Time Network FileS Transfer Protocol (RTFTP) [PDF]
Engineering and Technology Journal, 2013 In recent days there is a need to keep environment updated. The paper present flexible and simple protocol for updating file system for personal computer through internet.
Alaa Noori Mazher
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Comparison of immediate versus delayed frozen embryo transfer on reproductive outcome
Clinical and Experimental Obstetrics & Gynecology, 2021 The aim of this study was to compare impact of immediate versus delayed frozen frozen embryo transfer on reproductive outcome in patients undergoing IVF treatment.
Arzu Yurci +3 more
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Chirped frequency transfer: a tool for synchronization and time transfer
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2014 We propose and demonstrate the phase-stabilized transfer of a chirped frequency as a tool for synchronization and time transfer. Technically, this is done by evaluating remote measurements of the transferred, chirped frequency. The gates of the frequency counters, here driven by a 10-MHz oscillation derived from a hydrogen maser, play a role analogous ...
Sebastian M F, Raupach, Gesine, Grosche
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Optimal Population Transfers in a Quantum System for Large Transfer Time [PDF]
IEEE Transactions on Automatic Control, 2008 Transferring the state of a quantum system to a given distribution of populations is an important problem with applications to Quantum Chemistry and Atomic Physics. In this work we consider exact population transfers that minimize the L^2 norm of the control which is typically the amplitude of an electromagnetic field.
Symeon Grivopoulos, Bassam Bamieh
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