Constellation design for earth observation based on the characteristics of the satellite ground track

Luo, Xin; Wang, Maocai; Dai, Guangming; Song, Zhiming

doi:10.1016/j.asr.2017.01.010

Cited by 12 publications

(2 citation statements)

References 10 publications

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“…The direct overhead monitoring for the disaster site was achieved after the reconfiguration, and results proved that their design performs better than the existing observation satellites. As for regional or specific target observation, repeating ground track orbit is a usual choice, which has been proved to have better partial coverage properties than the unrepeated one [15,16]. A ground track is considered as repeating or periodic if it repeats at a fixed time interval, and the interval is usually an integral multiple of one nodal day [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable Satellite Constellation Design for Disaster Monitoring Using Physical Programming

Yang

et al. 2020

International Journal of Aerospace Engineering

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Data collection by satellites during and after a natural disaster is of great significance. In this work, a reconfigurable satellite constellation is designed for disaster monitoring, and satellites in the constellation are made to fly directly overhead of the disaster site through orbital transfer. By analyzing the space geometry relations between satellite orbit and an arbitrary disaster site, a mathematical model for orbital transfer and overhead monitoring is established. Due to the unpredictability of disasters, target sites evenly spaced on the Earth are considered as all possible disaster scenarios, and the optimal reconfigurable constellation is designed with the intention to minimize total velocity increment, maximum and mean reconfiguration time, and standard deviation of reconfiguration times for all target sites. To deal with this multiobjective optimization, a physical programming method together with a genetic algorithm is employed. Numerical results are obtained through the optimization, and different observation modes of the reconfigurable constellation are analyzed by a specific case. Superiority of our design is demonstrated by comparing with the existing literature, and excellent observation performance of the reconfigurable constellation is demonstrated.

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Section: Introductionmentioning

confidence: 99%

Reconfigurable Satellite Constellation Design for Disaster Monitoring Using Physical Programming

Yang

et al. 2020

International Journal of Aerospace Engineering

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“…UASs have evolved rapidly in recent years due to diverse efforts in the field of electronics, optics, computer science, energy storage, etc. The improving of technologies such as Global Navigation Satellite Systems (GNSS) [2][3][4], Inertial Measurement Units (IMU) [5][6][7][8][9], Light Detection and Ranging (LiDAR) [10][11][12], Synthetic Aperture Radar (SAR) [13,14], imaging sensors [15][16][17][18], and robotics (UAV) [19][20][21][22] has contributed to the progress of UAS technology. UASs allow flight in difficult and inaccessible areas, avoiding risk to the crews of manned aircraft [23].…”

Section: Introductionmentioning

confidence: 99%