Abstract
Constellation-to-ground coverage analysis is an important problem in practical satellite applications. The classical net point method is one of the most commonly used algorithms in resolving this problem, indicating that the computation efficiency significantly depends on the high-precision requirement. On this basis, an improved cell area-based method is proposed in this paper, in which a cell is used as the basic analytical unit. By calculating the accuracy area of a cell that is partly contained by the ground region or partly covered by the constellation, the accurate coverage area can be obtained accordingly. Experiments simulating different types of coverage problems are conducted, and the results reveal the correctness and high efficiency of the proposed analytical method.
Highlights
With the rapid development of science and technology, satellite technology plays an increasingly important role in mobile communications [1], remote sensing detection [2], military reconnaissance [3], disaster monitoring [4], navigation [5], and other fields
With the deepening of the application field, the complexity of space missions has gradually increased, and an increasing number of space missions can no longer be completed by a single satellite
In Reference [17], the coverage of satellites in a period of time is regarded as a family of curves, the envelope of the family of curves is solved, and the correlation between the envelope and the boundary of the coverage is obtained. All these methods construct a mathematical model of the coverage problem and analyze the mathematical characteristics of the problem to represent the coverage problem
Summary
With the rapid development of science and technology, satellite technology plays an increasingly important role in mobile communications [1], remote sensing detection [2], military reconnaissance [3], disaster monitoring [4], navigation [5], and other fields. In Reference [17], the coverage of satellites in a period of time is regarded as a family of curves, the envelope of the family of curves is solved, and the correlation between the envelope and the boundary of the coverage is obtained All these methods construct a mathematical model of the coverage problem and analyze the mathematical characteristics of the problem to represent the coverage problem. The feature area analysis method divides the two-dimensional sphere into a series of regions based on the trajectories of the satellites in the constellation [28, 29] These types of methods involve the decomposition of the regional target and have several common characteristics. The fourth chapter is the simulation experiment, and the last chapter is the conclusion
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