Results 21 to 30 of about 1,722 (145)

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, Zhonghua Du, Chun Cheng, Qingtao Wang   +3 more
doaj   +1 more source

Upgrade and automation of the JPL Table Mountain Facility tropospheric ozone lidar (TMTOL) for near-ground ozone profiling and satellite validation [PDF]

Atmospheric Measurement Techniques, 2019
As part of international efforts to monitor air quality, several satellite missions such as the Tropospheric Monitoring Instrument (TROPOMI) were deployed and others, like Tropospheric Emissions: Monitoring Pollution (TEMPO), are planned for the near ...
F. Chouza, T. Leblanc, M. Brewer, P. Wang   +3 more
doaj   +1 more source

Meteorological and air quality measurements in a city region with complex terrain: influence of meteorological phenomena on urban climate

Meteorologische Zeitschrift, 2023
On 8 and 9 July 2018 extensive observations were conducted under fair-weather conditions in the German city of Stuttgart and its surroundings. This intensive observation period, part of the four weeks Urban Climate Under Change (UC)2 campaign, intended ...
Abdul Samad, Olga Kiseleva, Christopher Claus Holst, Robert Wegener, Meinolf Kossmann, Gregor Meusel, Alina Fiehn, Thilo Erbertseder, Ralf Becker, Anke Roiger, Peter Stanislawsky, Dieter Klemp, Stefan Emeis, Norbert Kalthoff, Ulrich Vogt   +14 more
doaj   +1 more source

The future of Earth observation in hydrology [PDF]

Hydrology and Earth System Sciences, 2017
In just the past 5 years, the field of Earth observation has progressed beyond the offerings of conventional space-agency-based platforms to include a plethora of sensing opportunities afforded by CubeSats, unmanned aerial vehicles (UAVs), and smartphone
M. F. McCabe, M. Rodell, D. E. Alsdorf, D. G. Miralles, R. Uijlenhoet, W. Wagner, W. Wagner, A. Lucieer, R. Houborg, N. E. C. Verhoest, T. E. Franz, J. Shi, H. Gao, E. F. Wood   +13 more
doaj   +1 more source

An Improved Electron Pre-Sheath Model for TSS-1R Current Enhancement Computations

Aerospace, 2017
This report presents improvements of investigations on the Tethered Satellite System (TSS)-1R electron current enhancement due to magnetic limited collections.
Chunpei Cai
doaj   +1 more source

Dynamics and Control of a Tethered Satellite System Based on the SDRE Method

International Journal of Aerospace Engineering, 2016
This paper presents the nonlinear dynamic modeling and control of a tethered satellite system (TSS), and the control strategy is based on the state-dependent Riccati equation (SDRE).
Yong-Lin Kuo
doaj   +1 more source

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.
openaire   +2 more sources

Dynamic Analysis of Tethered Satellites with a Payload Moving Along a Flexible Tether

Applied Sciences
This study investigates the dynamic behavior of a three-body tethered satellite system with a flexible tether, focusing on a scenario in which a payload is transported along the tether connecting two satellites.
Yohan Ahn, Woojae Jang, Jeonga Lee, Jintai Chung   +3 more
doaj   +1 more source

Dynamics and Staged Deployment Strategy for a Spinning Tethered Satellite System

Aerospace
This paper investigates flexible multibody dynamic modeling and a staged deployment strategy for large-scale spinning tethered satellite systems, targeting deployment instability, inefficiencies, and tension-induced fracture risks.
Yue Zhang, Kai Chen, Jiawen Guo, Cheng Wei   +3 more
doaj   +1 more source

Putting It All Together: Adding Value to the Global Ocean and Climate Observing Systems With Complete Self-Consistent Ocean State and Parameter Estimates

Frontiers in Marine Science, 2019
In 1999, the consortium on Estimating the Circulation and Climate of the Ocean (ECCO) set out to synthesize the hydrographic data collected by the World Ocean Circulation Experiment (WOCE) and the satellite sea surface height measurements into a complete
Patrick Heimbach, Patrick Heimbach, Patrick Heimbach, Ichiro Fukumori, Christopher N. Hill, Rui M. Ponte, Detlef Stammer, Carl Wunsch, Carl Wunsch, Jean-Michel Campin, Bruce Cornuelle, Ian Fenty, Gaël Forget, Armin Köhl, Matthew Mazloff, Dimitris Menemenlis, An T. Nguyen, Christopher Piecuch, David Trossman, Ariane Verdy, Ou Wang, Hong Zhang   +21 more
doaj   +1 more source