Results 11 to 20 of about 60,625 (298)

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

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

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

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

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

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

Stochastic Subspace Method for Experimental Modal Analysis

open access: yesMATEC Web of Conferences, 2016
The formula of stochastic subspace identification method is deduced in details and the program is written out. The two methods are verified by a vibration test on a 5-floor rigid frame model.
Liu Dazhi   +5 more
doaj   +1 more source

Thermal Characteristic of Novel Insulation Materials Designed for Solar Simulator

open access: yesEnergies, 2022
The solar simulator is an important device for simulating solar irradiation in cold black and vacuum environments and has a wide range of application prospects.
Wenjing Ding   +4 more
doaj   +1 more source

Research on nanosatellite thermal cycling test applicability

open access: yesMATEC Web of Conferences, 2017
In order to verify the spacecraft performance in extreme temperature and vacuum, and to screen spacecraft early defect, generally spacecraft TV (Thermal Vacuum) test should be carried out before launch.
Li Xiyuan   +5 more
doaj   +1 more source

Back projection algorithm-based GEO SAR real-time quick Look imaging system

open access: yesThe Journal of Engineering, 2019
Geosynchronous earth orbit synthetic aperture radar (GEO SAR) has the advantages of short revisit period and wide observation range. However, compared with low earth orbit SAR (LEO SAR), GEO SAR has the distinct characteristics of long synthetic aperture
Qingjun Zhang   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy