Results 11 to 20 of about 810,336 (297)
Satellite RNAs and Satellite Viruses of Plants [PDF]
Viruses, 2009 The view that satellite RNAs (satRNAs) and satellite viruses are purely molecular parasites of their cognate helper viruses has changed. The molecular mechanisms underlying the synergistic and/or antagonistic interactions among satRNAs/satellite viruses, helper viruses, and host plants are beginning to be comprehended. This review aims to summarize the
Yau-Heiu Hsu +2 more
exaly +4 more sources
Experimental Attitude Estimation Using Real-time Magnetometer Calibrated Data [PDF]
علوم، فناوری و کاربردهای فضایی, 2022 Magnetometer is one of the main sensors in Attitude Determination and Control Subsystem (ADCS) of Low Earth Orbit (LEO) satellites and since it is operable in all times during an orbital period, it can be utilized in almost all functional modes like ...
Zeinab Talebi +2 more
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Journal 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
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Self-organising satellite constellation in geostationary Earth orbit [PDF]
, 2015 This paper presents a novel solution to the problem of autonomous task allocation for a self-organizing satellite constellation in Earth orbit. The method allows satellites to cluster themselves above targets on the Earth’s surface.
Colombo, Camilla +3 more
core +3 more sources
Satellites of Satellites: The Case for Carina and Fornax [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 Abstract We use the Auriga cosmological simulations of Milky Way (MW)-mass galaxies and their surroundings to study the satellite populations of dwarf galaxies in ΛCDM. As expected from prior work, the number of satellites above a fixed stellar mass is a strong function of the mass of the primary dwarf.
Stephen A Pardy +8 more
openaire +5 more sources
Long-term Performance Evaluation for Ionospheric Delay Correction of BeiDou Navigation Satellite System [PDF]
E3S 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
International 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
Research on attitude control strategy of single engine failure in the first-stage flight phase of new generation launch vehicle [PDF]
MATEC 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
Future 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
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Evaluation of Sea Surface Temperatures Derived From the HY-1D Satellite
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022 Global sea surface temperatures (SSTs) are detected by the Chinese ocean color and temperature scanner (COCTS) instruments aboard the HaiYang (HY)-1C and HY-1D satellites.
Xiaomin Ye +6 more
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