“Analysis of Operational Costs for Navigation Satellite Constellations Based on LEO and MEO Orbits With the Geometric Dilution of Precision (GDOP) Criterion”. Development Engineering Conferences Center Articles Database 1, no. 5 (September 4, 2025). Accessed September 13, 2025. https://pubs.bcnf.ir/index.php/Articles/article/view/302.