Results 21 to 30 of about 1,971 (165)
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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Vibroimpact Dynamics of a Tethered Satellite System
Shock and Vibration, 2017 This paper presents the vibroimpact dynamics of an in-plane tethered subsatellite caused by sudden braking during deployment or retrieval. The full dynamics of the subsatellite are composed of its free-flight and the instantaneous impacts.
B. S. Yu, H. Wen
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Космические аппараты и технологии, 2022 The problem of controlling a rotating hub-spoke tethered formation system in low Earth orbit is considered, in which microsatellites are located radially around the central spacecraft (hub) and connected to it by tethers (spokes). To analyze the dynamics
S. Chen, Yu. M. Zabolotnov
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Dynamics and Control of Tethered Satellite System in Elliptical Orbits under Resonances
International Journal of Aerospace Engineering, 2020 This paper studies resonance motions of a tethered satellite system (TSS) in elliptical orbits. A perturbation analysis is carried out to obtain all possible resonance types and corresponding parameter relations, including internal resonances and ...
Zhaojun Pang +3 more
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Remote Sensing, 2022 One of the most important parameters in the atmosphere, the neutral temperature, becomes difficult to measure at high altitudes such as the exosphere. Therefore, based on the assumption of static equilibrium and isothermal atmosphere, a new method was ...
Yingyun Lin +3 more
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Journal of Advances in Modeling Earth Systems, 2021 A description and assessment of the first release of the Arctic Subpolar gyre sTate Estimate (ASTE_R1), a data‐constrained ocean‐sea ice model‐data synthesis, is presented. ASTE_R1 has a nominal resolution of 1/3° and spans the period 2002–2017.
An T. Nguyen +5 more
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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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Dynamics of structures of clusters of tethered satellite
MATEC Web of Conferences, 2016 In this paper, we study the nonlinear dynamics of clusters of tethered satellites via numerical step-by-step time integration of the differential equations of motion. The basic algorithm is Central Difference explicit method.
Brasil R.-M.-L.-R.-F. +3 more
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Analysis of capability of air pollution monitoring from an unmanned aircraft
Aviation, 2014 Satellite monitoring systems can be used for remote monitoring of the atmosphere over a given area but they do not provide information on the state of pollution at a given time.
Augustyn Chwaleba +3 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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