This study successfully determined the optimal design parameters for a cost-effective regional Low Earth Orbit (LEO) satellite system dedicated to Earth Observation (EO) data transmission. By employing a multi-objective optimization framework, we explored trade-offs between economic efficiency, reliable communication, and data throughput capacity. The resulting Pareto fronts provide valuable insights into the most effective satellite configurations for various regional scenarios.
Key Findings:
Multi-Objective Optimization Effectiveness: The NSGA-II algorithm effectively identified design vectors that balance orbital parameters and technical specifications, leading to optimal satellite configurations that simultaneously achieve economic efficiency, QoS, and capacity.
Cost-Effective and Efficient Solutions: Lower altitude orbits with a higher number of satellites offer a more cost-effective and efficient solution, providing sufficient QoS and data capacity while reducing launch costs.
OPT vs. RF Performance: While OPT systems are slightly more expensive, they offer significantly higher data throughput and power efficiency. OPT is particularly suitable for regions with favorable weather conditions, such as Uzbekistan, where high data transfer rates and power efficiency are essential for applications like agriculture.
Regional Optimization: The choice between OPT and RF depends on regional atmospheric conditions. OPT is less suitable for regions with challenging weather, like Catalonia, where RF offers greater resilience to adverse conditions.
Cross-Border Collaboration: Sharing ground resources, such as ground observation stations, between countries presents opportunities for optimizing satellite operations. This could benefit regions with less favorable weather conditions.
Achievement of Research Objectives and Questions:
The study successfully addressed the objectives outlined in Chapter 1 and the research questions posed at the outset. Specifically, it:
* Identified satellite configurations that minimize costs while maintaining satisfactory performance.
* Maximized the link margin to ensure robust and reliable communication.
* Achieved the required data throughput capacity, particularly through the use of OPT technology.
* Determined optimal orbital parameters, satellite count, and specifications.
Conclusion:
This study emphasizes the importance of balancing orbital parameters, satellite count, and communication technology to optimize performance across economic, technical, and operational metrics. The results demonstrate that carefully selected satellite configurations can provide effective solutions across diverse geographic regions, reinforcing the robustness of the proposed framework. These insights offer valuable guidance for developing scalable and cost-effective regional satellite services.
A Multi-Objective Optimization Approach to Balancing Trade-Offs in Regional LEO Satellite Link Design for the New Space Era
Samandarov, B. (Author). 19 Nov 2024
Student thesis: Doctoral thesis
Student thesis: Doctoral thesis