The accuracy assessment of positional error of areonautical data declared by the standard criteria of international civil aviation organizational case study: U-tapao international airport Rayong Province
Abstract:
This research aims to measure the spatial data of aeronautical data using GPS and to
assess the accuracy of the spatial data of aeronautical data and the reference position of AIP
Thailand declared in 2009, according to the standard criteria of International Civil Aviation
Organization. This research surveyed by using static and kinetic GPS. The case study area was Utapao
International Airport, Rayong province.
The result compared the survey data with the reference position of AIP Thailand,
showed that the spatial data of landing at U-tapao International Airport has errors over the
standard criteria of International Civil Aviation Organization. After checking the cause of errors
found that 1. AIP Thailand declares the geographic coordinates, changes the second of arc into
the minute of arc that does not follow the standard criteria of Aeronautical data quality
requirements (latitude and longtitude) which determines the geographic coordinates of navigation
aids at 1/10 of Sec or at decimal 1 of Sec. 2. This error had variety of distance which may consist
of other factors caused the spatial data of aeronautical datas error, especially in position of MM
and Compass have the highest errors that were not measured repeat. 3. The Military Department
always updates the measure process including the coordinate reference pins. 4. The standard
criteria are high resolution, but the coordinates used in aeronautical data are raw data; for
example, if it changes only1 second of arc, it causes high error to 30.33 meters. Therefore, the
position of navigation aids is an important data; we should survey the position of navigation aids
regularly and study the error as the standard criteria for determining measured value in the same
way that is convenient for working and checking as the standard defined.