SouthPAN SBAS-aided real-time high-rate GNSS PPP for hazard early warning and structural health monitoring

This study presents the first comprehensive evaluation of SouthPAN-SBAS-aided real-time precise point positioning (RT-PPP) for high-rate applications. A single-axis shake table was used to simulate harmonic oscillations and earthquake-induced ground motions, and GNSS data was collected at 20 Hz. Solution accuracy was evaluated by comparison with relative GNSS positioning, post-processed PPP, conventional RT-PPP, and Linear Variable Differential Transformer (LVDT) reference. Results indicate that SBAS-aided RT-PPP accurately captures oscillation frequencies and dynamic displacements. These findings demonstrate the strong potential of SouthPAN SBAS–assisted RT-PPP for GNSS seismology and structural health monitoring in the Australia–New Zealand and broader Asia–Pacific region.