Visibility optimization of satellite constellations using a hybrid method

For the visibility optimization problem of satellite constellations, this paper presents an efficient hybrid optimization method taking multiple constraints into account. To reduce the time needed for the optimization, the satellite constellation is assumed to have a specific configuration. The opti...

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Vydáno v:Acta astronautica Ročník 163; s. 250 - 263
Hlavní autoři: Han, Chao, Bai, Shengzhou, Zhang, Sihang, Wang, Xinwei, Wang, Xiaohui
Médium: Journal Article
Jazyk:angličtina
Vydáno: Elmsford Elsevier Ltd 01.10.2019
Elsevier BV
Témata:
Computer simulation
Coverage function
Hybrid two-step algorithm
Linear adaptive method
Numerical simulations
Optimization
Satellite constellations
Satellites
Visibility
Visibility model
Visibility model
Hybrid two-step algorithm
Coverage function
Linear adaptive method
ISSN:0094-5765, 1879-2030
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Shrnutí:For the visibility optimization problem of satellite constellations, this paper presents an efficient hybrid optimization method taking multiple constraints into account. To reduce the time needed for the optimization, the satellite constellation is assumed to have a specific configuration. The optimization includes two steps. The first step searches for optima over a large scale, while the second step is designed to obtain the accurate optimal solution based on the result of the first-step optimization. Based on the analysis of the coverage performance function, a linear adaptive population method is proposed for the first step. When compared with the traditional optimization method, calculation time can be efficiently reduced while ensuring an accurate optimization. Several numerical simulations are conducted for validation. It proves to be a practical choice for engineering applications. •Different types of satellite load sensors and different coverage performance indices are considered.•Constraints of double- or more-level coverage are discussed.•The trend of the number of local maximum points of one-level coverage to the ground point are analyzed.•A novel hybrid two-step optimization method is proposed.
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ISSN:0094-5765
1879-2030
DOI:10.1016/j.actaastro.2019.01.025