Results 11 to 20 of about 90,052 (317)

Learning reference governor for constrained spacecraft rendezvous and proximity maneuvering [PDF]

open access: yes, 2023
Spacecraft automated rendezvous, proximity maneuvering, and docking (ARPOD) play significant roles in many space missions, including on-orbit servicing and active debris removal.
Ilya Kolmanovsky   +7 more
core   +1 more source

Planning natural repointing manoeuvres for nano-spacecraft [PDF]

open access: yes, 2014
In this paper the natural dynamics of a rigid body are exploited to plan attitude manoeuvres for a small spacecraft. By utilising the analytical solutions of the angular velocities and making use of Lax pair integration, the time evolution of the ...
Biggs, James   +4 more
core   +1 more source

Safety Design for the China Space Station

open access: yesSpace: Science & Technology, 2023
The safety of a space station under normal and abnormal conditions can be ensured only by comprehensively identifying various hazards of the space station during its whole mission cycle and formulating control measures against each hazard.
Wei Li   +5 more
doaj   +1 more source

Large aperture scanning membrane phased array antenna for geosynchronous Earth orbit synthetic aperture radar applications

open access: yesThe Journal of Engineering, 2019
A large aperture membrane phased array antenna with an array antenna and transmit/receive (T/R) modules is presented for geosynchronous Earth orbit synthetic aperture radar applications.
Mingming Xu   +5 more
doaj   +1 more source

Multi-Task Learning and Multimodal Fusion for Road Segmentation

open access: yesIEEE Access, 2023
The road segmentation task is to extract the road surface from the image at pixel level. In road segmentation for remote sensing images, deep learning-based methods have shown high-quality results in various scenarios.
Bowen Cheng   +4 more
doaj   +1 more source

Operations for Autonomous Spacecraft

open access: yes2022 IEEE Aerospace Conference (AERO), 2022
Onboard autonomy technologies such as planning and scheduling, identification of scientific targets, and content-based data summarization, will lead to exciting new space science missions. However, the challenge of operating missions with such onboard autonomous capabilities has not been studied to a level of detail sufficient for consideration in ...
Rebecca Castaño   +22 more
openaire   +2 more sources

Baseline designing and implementation approach for a Geo-SAR tomography system

open access: yesThe Journal of Engineering, 2019
This study proposes a new method to design and implement the baseline of a geosynchronous Earth orbit synthetic aperture radar (Geo-SAR) tomography system. Due to the satellite's orbital property, its ideal revisit cycle is 1 day, and it could be changed
Zhao Bingji   +4 more
doaj   +1 more source

On-orbit Space Technology Experiment and Verification Project Outlook of China’s Tiangong Space Station

open access: yesSpace: Science & Technology, 2023
China’s Tiangong space station has been completed in 2022 to support large-scale multidisciplinary space science research and technology experiments. With a large payload capacity and long operating time, Tiangong space station has many irreplaceable ...
Zhao Yin   +5 more
doaj   +1 more source

Research on Sand-dust Separation Technology Based on Gas-solid Two-phase Numerical Simulation [PDF]

open access: yesE3S Web of Conferences, 2020
The separation technology in the large-scale sand-dust environment ground simulation test system applicable to the environmental adaptability and reliability verification of aerospace electromechanical products is studied.
Zhang Lei, Wang Junwei, Li Guohua
doaj   +1 more source

Six-axis decentralized control design for spacecraft formation flying mission [PDF]

open access: yes, 2006
This contribution addresses the control design for the three-spacecraft formation flying interferometry mission Pegase. The operational mode considered is the high-precision nulling phase.
Sebastian Gaulocher   +8 more
core   +1 more source

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