Aerial Triangulation

 

Screen Shot of Intergraph IMZ Station doing soft copy triangulation

To optimize schedule and minimize labor associated with extensive ground surveys, Optimal Geomatic offers complete in-house conventional and softcopy fully analytical aerial triangulation (FAAT) services, providing highly accurate control for map production. This process can further be enhanced when Airborne GPS supported data are available.

Once aerial photos have been obtained, all point selection, layouts and codings are determined by Optimal Geomaticīs experienced personnel according to industry standards.

Softcopy analytical aero triangulation is accomplished using MATCH-AT. Utilizing high resolution scanned images, this system minimizes film handling while matching ground points at variable pixel size. Interior orientation, control and pass point selection, and refined plate coordinate generation is accomplished in an automatic or semi-automatic process. Pass points are selected within MATCH-AT using auto-correlation within the image overlap areas. Increased numbers of pass points strengthen the model setup and reduce parallax.

Skilled technicians use advanced processing software that enables us to avoid gross errors, assuring that all measurements fall within required tolerances. Full strip and bundle adjustment calculations are performed for an entire project simultaneously.