Research on formation of microsatellite communication with genetic algorithm

Area of Science:

• Spacecraft Formation Flying
• Satellite Communication Systems
• Optimization Algorithms

Background:

• Microsatellites require precise formation control for missions like 3D Earth mapping.
• Existing intersatellite communication systems face challenges in maintaining stability and data integrity.

Purpose of the Study:

• To develop an optimized design for stable circular microsatellite formations.
• To establish an efficient intersatellite communication system for formation-flying satellites.

Main Methods:

• An improved generic algorithm was employed for optimizing space circular formation order.
• A direct spread spectrum communication system was designed and simulated for Low Earth Orbit (LEO) satellites.
• Link calculations and transmitter power were determined based on specific formation-flying requirements.

Main Results:

• The optimized formation design ensures long-term stability under various disturbances.
• Simulations demonstrated effective intersatellite communication at 1 km distance and 1 Mbps data rate.
• Low-Density Parity-Check (LDPC) codes significantly improved communication performance compared to convolutional codes.

Conclusions:

• The proposed method provides a robust approach for stable microsatellite formation control.
• The developed communication system meets the demands of formation-flying microsatellites.
• This research lays a significant theoretical foundation for advanced formation flying and intersatellite communication.