The GDOP is a quantity that determines the positioning solution accuracy and solely depends on the spatial geometry of the satellites. The constellations performance is examined using simulations, and the figures of merit include total coverage time, revisit time, and geometric dilution of precision (GDOP) percentiles. The preliminary results of this study include 268 LEO constellations, aimed at regional navigation in an approximately 1000 km Ã- 1000 km area centered at the geographic coordinates degrees. Thus, this paper is aimed at developing a LEO constellation optimization and design method, using genetic algorithms and gradient-based optimization. Thus, a nano-satellites-based regional navigation satellite system in Low Earth Orbit (LEO), with significantly reduced launching, building and maintenance costs, can be considered. For applications that require only regional coverage, the continuous and global coverage that existing systems provide may be unnecessary. The state-of-the-art navigation satellite systems are located in medium Earth orbits and geosynchronous Earth orbits and are characterized by high launching, building and maintenance costs. Global and regional satellite navigation systems are constellations orbiting the Earth and transmitting radio signals for determining position and velocity of users around the globe. Regional positioning using a low Earth orbit satellite constellation
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |