Structural monitoring guide
GNSS/GPS Structural Movement Monitoring
Satellite positioning for slow or large-scale structural movement.
Structural note: monitoring data is evidence, not a declaration of safety. Applicable codes, inspections and qualified structural engineering remain necessary for consequential decisions.
What this topic covers
Satellite positioning for slow or large-scale structural movement.
Core monitoring ideas
High-precision GNSS can track movement relative to stable references.
Sky visibility, multipath and atmospheric effects influence quality.
GNSS is most useful where movement scale and required precision suit the method.
Interpretation limits
Sensor placement should follow the structural question rather than a generic grid spacing.
Evidence and data quality
Calibration, mounting and sensor health are part of the measurement system and must be tracked.
Lifecycle use
Combining complementary sensor types can reduce ambiguity when one measurement alone cannot explain a change.