Results 11 to 20 of about 15,749 (218)
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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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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Tethered Satellite System Stability [PDF]
, 1989 Abstract : Issues of stability of the Tethered Satellite System (TSS) during station-keeping, de- ployment and retrieval are considered. The basic nonlinear equations of motion of the TSS are derived using the system Lagrangian. Using the Hopf bifurcation theorem, tension control laws are established which guarantee the stability of the system during ...
Liaw, Der-Cherng, Abed, Eyad H.
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First Tethered Satellite System: Satellite Gyro Drift On-Flight Identification
IFAC Proceedings Volumes, 1994 This paper, to be considered as an application of existing stochastic estimator theories, presents the design of the algorithm used to identify on flight the initial bias of the TSS-1 Satellite gyro drift rates. This algorithm utilises the Space Shuttle Orbiter as an inertial stable platform and correlates its residual angular rates with the satellite ...
Bruno MUSETTI, Paolo MARTELLA
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The development of the Atmospheric Measurements by Ultra-Light Spectrometer (AMULSE) greenhouse gas profiling system and application for satellite retrieval validation [PDF]
Atmospheric Measurement Techniques, 2020 We report in this paper the development of an embedded ultralight spectrometer (<3 kg) based on tuneable diode laser absorption spectroscopy (with a sampling rate of 24 Hz) in the mid-infrared spectral region.
L. Joly +15 more
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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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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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On Tethered Satellite System Current Enhancement
, 2023 Improvements of investigations on the Tethered Satellite System (TSS)-1R electron current enhancement due to magnetic limited collections are reported. New analytical expressions are obtained for the potential and temperature changes across the pre-sheath. The mathematical treatments in this work are more rigorous than one past approach.
Cai, C., Cai, S., Cooke, D. L.
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Oxpecker: A Tethered UAV for Inspection of Stone-Mine Pillars
Drones, 2023 This paper presents a state-of-the-art tethered unmanned aerial vehicle (TUAV) for structural integrity assessment of underground stone mine pillars. The TUAV, powered by its tether, works in tandem with an unmanned ground vehicle (UGV) that hosts the ...
Bernardo Martinez Rocamora +5 more
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Ecological Solutions and Evidence, 2023 We have evaluated the feasibility of using GPS satellite transmitters on invasive bigheaded carp species, silver carp and bighead carp, that could determine patterns of movement, identify potential feeding and spawning areas, and inform a comprehensive ...
Andrew Mathis, Kevin Irons, James Lamer
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