improving positional accuracy
in ESRI ArcGIS
Positional accuracy improvement campaigns are currently
undertaken by many of the European national mapping agencies.
The availability of highly accurate positional information from
GPS allows for the transformation of the existing cadastral or
topographic base maps to the WGS84/ETRS89 reference systems.
While the long term benefit of this step to an improved absolute
accuracy is obvious, many users will now have to deal with
integration problems when superimposing the updated base maps
with their existing data.
To help you out in such situations we offer the geodetic
adjustment and positional accuracy improvement (PAI) component
KATHOM is implemented as a generic extension to ESRI ArcGIS and
can be used for the adjustment of arbitrary ArcGIS Features.
Furthermore, KATHOM can also be used as a PAI component for the 3A
Land Management products of AED-SICAD.
superior adjustment component, KATHOM includes all
necessary functions for PAI updates of primary base maps (e.g.
cadastral) as well as the consecutive update of associated user
data, e.g. utility networks or environmental data:
Automatic feature matching of existing and
updated map geometries (determine shift vectors).
Automatic snooping and verification of
geometrical constraints (straight lines, perpendicular lines,
arcs, angles, distances, parallels).
Simultaneous least squares adjustment of
shift vectors and geometrical constraints, leading to
consistent coordinates preserving the relative accuracy and
intrinsic geometric relations of your data.
For further information on KATHOM please contact
us via Email