Feasibility of Providing High-Precision GNSS Correction Data Through Non-Terrestrial Networks

Real-time kinematic (RTK) and precise point positioning (PPP)-RTK techniques are essential for safety-critical applications like structural health monitoring (SHM) and open-pit mining operations, among others. These applications often operate in remote areas lacking the necessary traditional communication infrastructure for high-precision Global Navigation Satellite Systems (GNSS). This article explores non-terrestrial networks (NTNs) as a viable solution, specifically using low Earth orbit (LEO) satellite constellations to deliver RTK and PPP-RTK correction data through NTN. We evaluate the convergence time of these techniques and the required link capacity through real-world experiments, relating these findings to actual LEO satellite communication access duration and intervals. Our results demonstrate that these communication periods provide sufficient time for achieving convergence in high-precision GNSS navigation solutions.