GIS-based satellite coverage area rapid simulation method

Abstract

The invention discloses a GIS-based satellite coverage area rapid simulation method, which specifically comprises the following steps of: calculating geocentric angles of a satellite to-ground coverage domain and a satellite to-air coverage domain, and obtaining the geocentric longitude and geocentric latitude of a sub-satellite point by a spherical trigonometric formula; solving spatial data models of boundaries of the satellite to-ground coverage domain and the satellite to-air coverage domain; sequentially carrying out classification correction and Mercator projection processing on the spatial data models of the boundary of the satellite to-ground coverage domain and the boundary of the satellite to-air coverage domain to obtain spatial data models of the coverage domain boundaries on aMercator graph; and processing the spatial data models of the coverage domain boundaries on the Mercator graph through a GIS mapping technology to obtain a coverage domain Mercator projection graph of the satellite to a celestial sphere and a constellation coverage image generated by superposing a plurality of satellite coverage domains. The spatial data models of the coverage domain boundaries are classified and corrected, so that the geometric objects of the coverage domain boundaries can be created directly based on the azimuth angle algorithm for region filling, and coverage judgment point by point in the region is not needed.

Description

technical field [0001] The invention relates to the technical field of satellite network communication, in particular to a GIS-based fast simulation method for satellite coverage domains. Background technique [0002] Satellite coverage analysis is widely used in space missions such as satellite mission planning, reconnaissance, and constellation design. The visual display of satellite coverage domains on two-dimensional maps will be beneficial to the coverage analysis of satellites and constellations. At present, the visualization of coverage domains is mostly based on the grid point method. This method is based on dividing the coverage area by grid and solving the coverage point by point. The basic idea of ​​sampling coverage results is that point-by-point calculations are used in the coverage analysis process. [0003] Therefore, the coverage accuracy simulation is closely coupled with the grid division. When the grid division is fine, the coverage analysis accuracy is i...

AI Technical Summary

Problems solved by technology

[0003] Therefore, the coverage accuracy simulation is closely coupled with the grid division. When the grid division is fine, the coverage analysis accuracy is improved, but the calculation amount is increased. When the grid division is rough, the coverage analysis accuracy is reduced, and the calculation amount is reduced. Analytical efficiency and high analytical precision

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