Research Article

Correction of Misalignment Errors in the Integrated GNSS and Accelerometer System for Structural Displacement Monitoring

Table 1

Key parameters of GNSS RTK positioning.

ParameterSettings

ObservationsDouble-differenced dual-frequency carrier-phase and pseudorange (GPS L1 and L2), Galileo E1 and E5A, and BDS (B1 and B2)
Cutoff angle12°
Observation weighting schemeAn elevation-dependent scheme based on the cosecant function
Baseline lengthAbout 100 m
Estimation methodKalman filter
Antenna phase center offsetsCorrected with Antex igs14.atx [38]
Atmospheric delaysEliminated in double-differencing
AmbiguityEstimated and fixed to integers with Lambda