LPS-Positional Improvement of OSNI large scale digital vector-topographical data

Tender description

To improve the absolute positional accuracy of the large scale data based on the ETRS89 coordinate reference system, while retaining the existing, geometry (lines/polygons), attribution, symbology, geometrical fidelity and topological stability of the database; • Improve the positional quality of map detail and subsequently improve the relative and absolute positional accuracy. • Maintain the specification of the large scale mapping (guidance on how minor detail will be addressed is included in appendix 2). • To ensure the position of all map detail is realigned to exactly match its position on the stereo imagery provided (i.e. on key).