Genetic Algorithm-Based Approach for Improving Temporal Resolution in Constellation Operation of National Satellites

• Published in: International journal of aeronautical and space sciences Vol. 26; no. 1; pp. 314 - 326
• Main Authors: Jung, Insik, Chung, Daewon
• Format: Journal Article
• Language: English
• Published: Seoul The Korean Society for Aeronautical & Space Sciences (KSAS) 01.01.2025; 한국항공우주학회
• Subjects: Aerospace Technology and Astronautics; Engineering; Fluid- and Aerodynamics; Original Paper; 항공우주공학; Satellite constellation; Temporal resolution; Integrated operation; Genetic algorithm; National satellite; Satellite information
• ISSN: 2093-274X; 2093-2480
• DOI: 10.1007/s42405-024-00761-1

The application of satellite information refers to the utilization of data generated by operational satellites that have been launched into orbit. Due to the recent rapid increase in the number of satellites in space, satellite information is growing exponentially. This growth underscores the necessity of finding effective ways to utilize this wealth of satellite data. In particular, it is anticipated that the number of individually developed national satellites will continue to rise, making it imperative to establish efficient methods for the fusion and application of satellite information through the configuration of satellite constellations and integrated operations of national satellites. In this paper, we propose a method to improve temporal resolution by employing a genetic algorithm for efficient fusion and application of satellite information. Additionally, we present a method for configuring national satellite constellations by adjusting the revisit times of operational satellites using the previously mentioned method. To mitigate the potential shortening of the lifespan of currently operational satellites due to fuel consumption, we altered the orbits of future satellites slated for launch. We also made adjustments to the Right Ascension of the Ascending Node (RAAN), a parameter that has minimal impact on payload. We conducted separate analyses for Electro Optical (EO) and Synthetic Aperture Radar (SAR) satellites, each with different imaging schedules. Our findings confirmed that it is possible to configure constellations of national satellites by modifying the revisit characteristics of both types of satellites.