Design Method and Program of Satellite Constellation to Reduce the Revisit Cycle of Specific Regions

摘要

The present invention relates to orbital design of an artificial satellite, and more particularly, to increase observation opportunities and reduce the cost of operating a satellite group through an orbit design method that optimizes the revisit period of multiple satellites for a specific area. To this end, the satellite group orbit design method of the present invention is composed of a design method and a program in which a specific region and a satellite orbit crossing points are matched as a mission starting point. The program receives the latitude, longitude, the satellite''s orbital frequency, and the inclination angle for a specific area and calculates the initial average periphery angle and the ascending point, and corrects the inclination angle to match the intersection with the specific area using the satellite orbit parameter type motion equation It includes the step of. The step of correcting the inclination angle follows a fixed point iteration method in conjunction with Fast and Robust Self-intersections, a powerful program built into MATLAB. Accordingly, the present invention can optimize the increase of observation opportunities and reduction of satellite group operation costs by dramatically shortening the revisit period for a specific area compared to the existing Walker-Delta satellite arrangement technique.