Results 11 to 20 of about 2,030 (237)
Extensive Regional Telecommunications Coverage in Emergency Condition Using Satellite and Tethered-Balloon Equipped with Antenna Pointing Mechanism – Part 2: Operation Modes and Controller Design [PDF]
فصلنامه علوم و فناوری فضایی, 2022 In this paper, in order to provide telecommunication coverage for a wide geographical area, the use of a network consisting of an LEO satellite and a Tethered-Balloon equipped with antenna pointing mechanism is proposed.
Javad Ranjbar, Mohammad Fathi
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Satellite Swarm-Based Antenna Arrays for 6G Direct-to-Cell Connectivity
IEEE Access, 2023 Direct connectivity in L/S frequency bands between satellites and common mobile terrestrial user equipment (UE), such as smartphones, is an essential feature for future 6G non-terrestrial networks.
Diego Tuzi +2 more
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Stability of a tethered satellite system [PDF]
29th Aerospace Sciences Meeting, 1991 am(S,ao.d6) a($,,) as a function of wing area, wing inclination and boom length The Tethers in Space program will provide an important new c The aerodynamic damping derivative = -2 facility for conducting experiments in regions remote from the (A rough approximation only; this was developed Space Shuttle Orbiter.
Santangelo, Andrew Dominic +1 more
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Micro Satellite Orbital Boost by Electrodynamic Tethers [PDF]
Micromachines, 2021 In this manuscript, a method for maneuvering a spacecraft using electrically charged tethers is explored. The spacecraft’s velocity vector can be modified by interacting with Earth’s magnetic field. Through this method, a spacecraft can maintain an orbit indefinitely by reboosting without the constraint of limited propellant.
Peter Yao, Timothy Sands
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ON CONTROL OF TETHERED SATELLITE SYSTEMS
IFAC Proceedings Volumes, 1985 Abstract The dynamics of tethered satellite systems is rather complex and consists of various rotational and vibrational degrees of freedom. While designing its control system, some of these degrees of freedom may be modeled while the others are likely to be left unmodeled to reduce complexity and cost.
A.K. Misra, D.M. Xu, V.J. Modi
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IEEE Access, 2021 Orbital perturbations caused by the space environment will induce deviations compared with the prescribed motion trajectory or dynamic performance of the tethered satellite system (TSS).
Zhengfeng Bai, Xin Jiang
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On the dynamics of a tethered satellite system [PDF]
Archive for Rational Mechanics and Analysis, 1994 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wang, Li-Sheng +2 more
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In-plane adaptive retrieval control for a noncooperative target by tethered space robots
International Journal of Advanced Robotic Systems, 2016 Using tether to replace rigid arms, the tethered space robot has more flexibility and security than the traditional space robot, which gives it a wide application prospect in the satellite retrieval.
Zhongjie Meng +3 more
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Application of cloud particle sensor sondes for estimating the number concentration of cloud water droplets and liquid water content: case studies in the Arctic region [PDF]
Atmospheric Measurement Techniques, 2021 A cloud particle sensor (CPS) sonde is an observing system attached with a radiosonde sensor to observe the vertical structure of cloud properties. The signals obtained from CPS sondes are related to the phase, size, and number of cloud particles.
J. Inoue +6 more
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Endangered Species Research, 2021 We present evidence of predator interactions with 8 juvenile loggerhead sea turtles Caretta caretta equipped with pop-up satellite archival transmitting tags (PSATs) following incidental capture in the Northwest Atlantic.
KE Hall, MC James
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