Results 41 to 50 of about 30,391 (147)

Separating and quantifying facility-level methane emissions with overlapping plumes for spaceborne methane monitoring [PDF]

Atmospheric Measurement Techniques
Quantifying facility-level methane emission rates using satellites with fine spatial resolution has recently gained significant attention. However, the prevailing quantification algorithms usually require the methane column plume from a solitary point ...
Y. Pang, Y. Pang, L. Tian, D. Hu, S. Gao, G. Liu, G. Liu   +6 more
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Design Study for a Quasisynchronous CDMA Sensor Data Collection System: An LEO Satellite Uplink Access Technique Based on GPS

International Journal of Distributed Sensor Networks, 2015
With the development of the LEO satellite communication technology, highly dependable wireless communication and sensor data collection using LEO satellites have been getting much attention for emergency, marine research, and forest fire disaster in the ...
Yijun Chen, Sheng Ding, Zhouchen Xie, Zhuangping Qi, Xuwen Liang   +4 more
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A Local Pre-Rerouting Algorithm to Combat Sun Outage for Inter-Satellite Links in Low Earth Orbit Satellite Networks

Applied Sciences
Satellite networks show the development trend in global coverage, flexible access, and reliable transmission. They are the key to building a wide coverage, massive connection, three-dimensional, all-round, all-weather, space-, air- and ground-integrated ...
Jifeng Jin, Lin Shang, Zijian Yang, Haiwang Wang, Guotong Li   +4 more
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Beam Coverage Comparison of LEO Satellite Systems Based on User Diversification

IEEE Access, 2019
To achieve global network coverage and the need for high-speed communication, the idea of providing Internet access from space has made a strong comeback in recent years.
Shiyi Xia, Quanjiang Jiang, Cheng Zou, Guotong Li   +3 more
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STGLR: A Spacecraft Anomaly Detection Method Based on Spatio-Temporal Graph Learning

Sensors
Anomalies frequently occur during the operation of spacecraft in orbit, and studying anomaly detection methods is crucial to ensure the normal operation of spacecraft. Due to the complexity of spacecraft structures, telemetry data possess characteristics
Yi Lai, Ye Zhu, Li Li, Qing Lan, Yizheng Zuo   +4 more
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Short-Period Characteristics Analysis of On-Orbit Solar Arrays

Aerospace
Based on the analysis of solar array current data from a certain MEO-orbiting satellite, this paper reveals its short-period fluctuation characteristics and underlying mechanisms.
Huan Liu, Chenjie Kong, Yuan Shen, Baojun Lin, Xueliang Wang, Qiang Zhang   +5 more
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On-Orbit Life Prediction and Analysis of Triple-Junction Gallium Arsenide Solar Arrays for MEO Satellites

Aerospace
This paper focuses on the triple-junction gallium arsenide solar array of a MEO (Medium Earth Orbit) satellite that has been in orbit for 7 years. Through a combination of theoretical and data-driven methods, it conducts research on anti-radiation design
Huan Liu, Chenjie Kong, Yuan Shen, Baojun Lin, Xueliang Wang, Qiang Zhang   +5 more
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Force–Position Coordinated Compliance Control in the Adhesion/Detachment Process of Space Climbing Robot

Aerospace
Adhesion-based space climbing robots, with their flexibility and multi-functional capabilities, are seen as a promising candidate for in-orbit maintenance.
Changtai Wen, Pengfei Zheng, Zhenhao Jing, Chongbin Guo, Chao Chen   +4 more
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SDGSAT-1 pendulum mirror coupling control technology

International Journal of Digital Earth
Aiming at the on-orbit high-precision attitude control problem of coupling the periodic motion of the thermal infrared oscillating mirror of the Sustainable Development Scientific Goals Satellite-1 (SDG Satellite-1, SDGSAT-1) with the motion of the ...
Xianghua Xie, Yingquan Yang, Yining Wang, Lingling Yan, Bihong Fu, Liang Chang   +5 more
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Energy Adaptability Analysis Based on the Stall Fault of Solar Array Drive Assembly for Medium Earth Orbit Satellite

Energies
In response to the stalling fault of the solar array drive assembly (SADA) in an in-orbit MEO satellite, an analysis and research on the energy balance algorithm are conducted.
Chenjie Kong, Huan Liu, Baojun Lin, Xueliang Wang, Qiang Zhang, Yabin Wang   +5 more
doaj   +1 more source