Results 1 to 10 of about 2,425,563 (382)

Signal estimation in cognitive satellite networks for satellite-based industrial internet of things [PDF]

open access: yes, 2021
Satellite industrial Internet of Things (IIoT) plays an important role in industrial manufactures without requiring the support of terrestrial infrastructures.
Chen, Yunfei   +5 more
core   +1 more source

Science Objectives and Design of Ionospheric Monitoring Instrument Ionospheric Anomaly Monitoring by Magnetometer And Plasmaprobe (IAMMAP) for the CAS500-3 Satellite

open access: yesJournal of Astronomy and Space Sciences, 2022
The Ionospheric Anomaly Monitoring by Magnetometer And Plasma-probe (IAMMAP) is one of the scientific instruments for the Compact Advanced Satellite 500-3 (CAS 500-3) which is planned to be launched by Korean Space Launch Vehicle in 2024.
Kwangsun Ryu   +12 more
doaj   +1 more source

Research on attitude control strategy of single engine failure in the first-stage flight phase of new generation launch vehicle [PDF]

open access: yesMATEC Web of Conferences, 2021
The successful launching of the new generation of launch vehicle is of great practical significance to the development of China Space, and the cryogenic liquid engine commonly used in the launch vehicle has a certain probability of failures, which may ...
Liao Guorui, Liu Jinjie, Dou Tianheng
doaj   +1 more source

Refracting RIS-Aided Hybrid Satellite-Terrestrial Relay Networks: Joint Beamforming Design and Optimization

open access: yesIEEE Transactions on Aerospace and Electronic Systems, 2022
Reconfigurable intelligent surface (RIS) has been viewed as a promising solution in constructing reconfigurable radio environment of the propagation channel and boosting the received signal power by smartly coordinating the passive elements’ phase shifts
Zhi Lin   +6 more
semanticscholar   +1 more source

Progress and Challenges in Intelligent Remote Sensing Satellite Systems

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Due to advances in remote sensing satellite imaging and image processing technologies and their wide applications, intelligent remote sensing satellites are facing an opportunity for rapid development.
Bing Zhang   +6 more
semanticscholar   +1 more source

Long-term Performance Evaluation for Ionospheric Delay Correction of BeiDou Navigation Satellite System [PDF]

open access: yesE3S Web of Conferences, 2019
Ionospheric delay is one of the main errors in the satellite navigation and positioning system. At present, ionospheric delay correction model and grid ionospheric information are provided to correct the error in BeiDou Navigation Satellite System (BDS).
Liu Chen   +5 more
doaj   +1 more source

Application of the Improved Grey Wolf Algorithm in Spacecraft Maneuvering Path Planning

open access: yesInternational Journal of Aerospace Engineering, 2022
In many space missions, spacecraft are required to have the ability to avoid various obstacles and finally reach the target point. In this paper, the path planning of spacecraft attitude maneuver under boundary constraints and pointing constraints is ...
Changqing Wu   +4 more
doaj   +1 more source

Massive MIMO Transmission for LEO Satellite Communications [PDF]

open access: yesIEEE Journal on Selected Areas in Communications, 2020
Low earth orbit (LEO) satellite communications are expected to be incorporated in future wireless networks, in particular 5G and beyond networks, to provide global wireless access with enhanced data rates.
Li You   +5 more
semanticscholar   +1 more source

Research on Routing Equalization Algorithm of Inter-Satellite Partition for Low-Orbit Micro-Satellites

open access: yesFuture Internet, 2022
Low-orbit micro-satellite technology has developed rapidly in recent years due to its advantages of low time delay, low cost and short research period.
Hengfei Cheng   +7 more
doaj   +1 more source

Satellite imaging reveals increased proportion of population exposed to floods

open access: yesNature, 2021
Flooding affects more people than any other environmental hazard and hinders sustainable development1,2. Investing in flood adaptation strategies may reduce the loss of life and livelihood caused by floods3.
B. Tellman   +7 more
semanticscholar   +1 more source

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