Multi-Objective Design of a Lunar GNSS
نویسندگان
چکیده
Abstract The success of future lunar missions depends on quality positioning, navigation, and timing (PNT) information. Earthbound GNSS signals can be received at distances but suffer from poor geometric dilution precision (GDOP) provide no coverage the far side. This article explores design space a dedicated system in orbit by using multi-objective evolutionary algorithm framework to optimize GDOP, availability, segment cost, station-keeping ΔV, robustness single-satellite failure. Results show that Pareto approximate solutions achieve global GDOP availability (GDOP ≤ 6.0) greater than 98% contain minimum 24 satellites near-circular polar orbits an altitude ~2 radii. impact failure outage is analyzed no-maneuver scenario considered. Design rules characterizing optimal are identified trade-offs between maneuver frequency, performance, lifetime discussed.
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ژورنال
عنوان ژورنال: Navigation: journal of the Institute of Navigation
سال: 2022
ISSN: ['0028-1522', '2161-4296']
DOI: https://doi.org/10.33012/navi.504