Aerotriangulation research conducted by the Wisconsin Department of Transportation to determine the minimum control configuration that would yiedl accurate photographic control with error-detection capability is described. A new aerotriangulation program package developed for the department's photogrammetry system was used. Conclusions are based on the results of four projects in which 1:3000-scale photography was used at a flying height of 457 m (1500 ft). In the test procedure, an adjustment that used all available control was taken as a basis of comparison in determining a minimum control standard, with redundancy, to allow for detection of single and multiple errors. Accuracies were determined based on the standard deviation of discrepancies among withheld-control points and pass-point movement. The relation between analytical instrumentation, control configuration, and program capabilities has resulted in standards that produce equal adjustments to different projects. The results indicate that the bridging distance between successive vertical wing points and successive horizontal picture points can be as much as six models and all control points can be in double-overlap areas. The new program package has greatly reduced field survey time and increased design flexibility. (Author)

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 1-4
  • Monograph Title: Aerial surveys, geometrics, surface drainage, ecological impacts and safety appurtenances
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00316648
  • Record Type: Publication
  • ISBN: 0309029910
  • Files: TRIS, TRB
  • Created Date: Oct 27 1980 12:00AM