2.2 GeoSAR TLM geodatabase finishing
After primary collection with PurVIEW is accomplished, the GeoSAR TLM geodatabase is made ready for delivery using a robust finishing process. Fugro analysts perform continuity validation using topology tools that diagnose and fix most common problems in network features such waterways, roads or power lines. Hydrographic features are compiled and merged. Proper names and/or numbers are attributed to features. Contours are produced from both the of GeoSAR’s X- and P-band DEMs. Lastly, the compiled features are checked for position and scale consistency with the rest of the GeoSAR TLM geodatabase. Generally, Fugro EarthData adheres to USGS mapping standards for 1:24,000 and 1:50,000 mapping scales.
Lastly, PurVIEW serves as a viewer, query, and analysis engine for the completed GeoSAR TLM data. Geodatabase queries can be executed on feature codes or any common attribute. Using ESRI’s ArcGIS service framework, GeoSAR TLM geodata are co-registered to a common projection, ellipsoid, and datum, and displayed together on the fly. Accuracies obtained are comparable to photogrammetrically compiled geospatial data.