Results 101 to 110 of about 4,477,022 (227)

Formation Control of Networked Spacecraft in Deep Space Without Velocity Measurement

工程科学与技术, 2011
:This paper considers the formation control and attitude control problems of networked spacecraft flying in deep space.The control objectives are to design a coupled controller under which each spacecraft can track its ...
doaj  

ELFIN Statistics of Electron Strong Diffusion in the Inner Magnetosphere

Journal of Geophysical Research: Space Physics, Volume 131, Issue 11, November 2026.
Abstract Pitch‐angle diffusion of trapped electrons driven by whistler‐mode and EMIC waves and by field‐line curvature scattering (FLCS) plays an important role in energetic and relativistic electron loss from the inner magnetosphere. The strong diffusion regime, characterized by a nearly full loss cone, rarely occurs, but is expected to account for a ...
Emile Saint‐Girons, Didier Mourenas, Anton V. Artemyev, Xiao‐Jia Zhang, Vassilis Angelopoulos   +4 more
wiley   +1 more source

Induction Signals From Europa's Subsurface Ocean: Contributions of Time Variations in the Plasma Interaction

Journal of Geophysical Research: Space Physics, Volume 131, Issue 11, November 2026.
Abstract The magnetic perturbations generated by Europa's plasma interaction undergo oscillatory variations since Jupiter's magnetospheric current sheet periodically sweeps across the moon. We determine the inductive response of Europa's subsurface ocean to this excitation signal and compare it to the field induced by the time‐varying yet locally ...
Lucas Liuzzo, Sven Simon, C. Michael Haynes, Andrew R. Poppe   +3 more
wiley   +1 more source

Photometric Characterization of the Moon's Silicic Sites: Insights Into the Origin of Silica‐Rich Magmas

Journal of Geophysical Research: Planets, Volume 131, Issue 11, November 2026.
Abstract Lunar “red spots” have been inferred to be regions of extrusive silicic volcanism based on the analysis of remote sensing observations that suggest SiO2 ${\mathrm{S}\mathrm{i}\mathrm{O}}_{2}$‐rich, FeO‐poor composition and morphologies similar to terrestrial silicic domes.
S. R. Burnette, K. L.  Donaldson Hanna, A. Dove, J. M. Sunshine, L. Santori, S. N. Valencia   +5 more
wiley   +1 more source

Vision-Based Relative Attitude and Position Estimation for Small Satellites with Robust Filtering Technique

Engineering Proceedings
Relative satellite navigation is critical for formation flying, rendezvous, and docking. This study augments a vision-based relative navigation framework with a robust multiplicative extended Kalman filter (RMEKF) that adaptively scales the measurement ...
Elif Koc, Halil Ersin Soken
doaj   +1 more source

When Laboratory Studies of Plumes Shed the Veil of the Enceladus' Interior

Journal of Geophysical Research: Planets, Volume 131, Issue 11, November 2026.
Abstract Since the discovery by Cassini of plumes of water vapor and icy particles erupting from the South Polar Terrain (SPT) of Enceladus, numerous numerical models have been proposed to explain the mechanism driving these plumes, and how they relate to the thermodynamic conditions inside the underlying crevasses.
Yaël R. A. Bourgeois, Stéphanie M. Cazaux, Fabrizio Giordano   +2 more
wiley   +1 more source

Laboratory Experiments Identify Meteoritic Organic Precursors for Chlorinated Compounds Detected by the Sample Analysis at Mars (SAM) Instrument at Gale Crater

Journal of Geophysical Research: Planets, Volume 131, Issue 11, November 2026.
Abstract The Viking missions landed two spacecraft on Mars each equipped with a pyrolysis‐gas chromatograph‐mass spectrometer system capable of detecting signs of life. Although working as intended, detections of chloromethane and dichloromethane were initially attributed to terrestrial contamination.
A. Mojarro, J. Herrera, A. Sistiaga, S. S. O’Reilly, J. C. Aponte, A. Buch, J. L. Eigenbrode, D. P. Glavin, C. Freissinet, M. Millan, C. Szopa, R. E. Summons   +11 more
wiley   +1 more source

Dynamical Solar Wind Forecasting Using In Situ Solar Wind Speed Observations

Space Weather, Volume 24, Issue 11, November 2026.
Abstract Accurate prediction of the ambient solar wind at Earth is a key requirement for space‐weather forecasting but is limited by uncertainties in coronal boundary conditions and, to a lesser extent, heliospheric transport. We present a quantitative assessment of a solar wind forecast that uses near‐Earth in situ solar wind observations to estimate ...
M. J. Owens, L. A. Barnard, H. Turner, C. N. Arge   +3 more
wiley   +1 more source

Review of Spacecraft Pose-Estimation Techniques for Close-Proximity Operations

IEEE Access
The accurate estimation of spacecraft pose during close-proximity operations is a fundamental capability required for various space missions, including on-orbit servicing, debris management, and formation flying.
Kenny Vishal, Vishnu G. Nair, Jeane Marina D'Souza   +2 more
doaj   +1 more source

The May 2024 Storm: The Cusps and Dayside Magnetopause in Simulated Soft X‐Rays

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract The coronal mass ejection (CME) arriving at Earth on 10 May 2024 caused the most intense geomagnetic storm in the last two decades, resulting in highly unusual cusp and magnetopause dynamics. We simulate soft X‐Ray emission due to solar wind charge exchange with exospheric neutrals to image the global dayside dynamics, focusing on the impact ...
J. Ng, L.‐J. Chen, B. Burkholder, D. Sibeck, F. S. Porter, K. H. Pham, V. G. Merkin, H. Connor, J. W. Bonnell, S. Petrinec, Y. Zou, B. Alterman, G. Cucho‐Padin   +12 more
wiley   +1 more source