Unless accounted for, annual signals in geodetic data can significantly bias estimation of site velocities. For high accuracy applications, annual and semi-annual sinusoidal signals should be estimated simultaneously with site velocity and initial position. Minimum velocity bias is theoretically predicted at integer-plus-half years, as confirmed by tests with real data. Below 2.5 years, the velocity bias can bècome unacceptably large, and simultaneous estimation does not necessarily improve velocity estimates.
CITATION STYLE
Blewitt, G., & Lavallée, D. (2002). Bias in Geodetic Site Velocity due to Annual Signals: Theory and Assessment (pp. 499–500). https://doi.org/10.1007/978-3-662-04709-5_83
Mendeley helps you to discover research relevant for your work.