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

Table 1

Key parameters of GNSS RTK positioning.

Parameter	Settings
Observations	Double-differenced dual-frequency carrier-phase and pseudorange (GPS L1 and L2), Galileo E1 and E5A, and BDS (B1 and B2)
Cutoff angle	12°
Observation weighting scheme	An elevation-dependent scheme based on the cosecant function
Baseline length	About 100 m
Estimation method	Kalman filter
Antenna phase center offsets	Corrected with Antex igs14.atx [38]
Atmospheric delays	Eliminated in double-differencing
Ambiguity	Estimated and fixed to integers with Lambda