Observational analysis investigates ocean tidal loading effects in GNSS time series, highlighting processing strategies for improved accuracy.
Key Points
Applying ocean tidal loading correction enhances GNSS solution stability, reducing RMS of station positions by at least 20%.
The double difference technique shows lower RMS values and better coherence with ocean tidal models compared to precise point positioning.
The precise point positioning method demonstrates greater sensitivity to systematic biases in solar-related tidal constituents, exceeding discrepancies of 2 mm.
Choosing the right GNSS processing technique is crucial for accurate ocean tidal loading displacement estimation in geodesy.