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Pages 84-85

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From page 84...
... 84 Until the mid-1990s, FAA relied heavily on state and local survey requirements for airport construction projects. However, many airports created their own coordinate systems3 that were not "tied into" the geographic zone-based State Plane Coordinate System4 to accommodate horizontal and vertical survey control.
From page 85...
... A Brief History of FAA Aeronautical Surveys 85 for remote sensing measurements and mapping compilation (via aerial triangulation and traditional photogrammetry) as well as GIS standards for aggregating data from field surveys and remote sensing into geodatabases for airport- and airspace-related features and attribution.

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