Metrology for long distance surveying : A joint attempt to improve traceability of long distance measurements

• Based on the current state of technology, distance measurements over a few hundred metres in air with relative uncertainties significantly better than 10_6 are still an almost impossible challenge. In the European Joint Research Project (JRP) “Metrology for long distance surveying” measurement uncertainties in GNSS-based and optical distance metrology are going to be thoroughly investigated, novel technologies and primary standards developed and guidelines to improve surveying practice in the field worked out. A better understanding and a decrease of measurement uncertainty is also targeted for the critical local tie measurement at geodetic fundamental stations.

Keyword

Calibration

EDM

GNSS

Local ties

Long distance

Reference baseline

Surveying

Surveys

Units of measurement

Long distance measurement

Measurement uncertainty

Primary standards

Relative uncertainty

Uncertainty analysis

Publication and Content Type

ref (subject category)

kon (subject category)