Accession Number : AD0764254

Title :   Analytical Aerotriangulation Based on the Simultaneous Adjustment of Photogrammetric and Geodetic Observations.

Descriptive Note : Final rept. 11 Apr 69-20 Jun 73,

Corporate Author : ILLINOIS UNIV URBANA DEPT OF CIVIL ENGINEERING

Personal Author(s) : Wong,Kam W.

Report Date : 20 JUN 1973

Pagination or Media Count : 13

Abstract : A mathematical solution was successfully developed and a computer program called SAPGO was coded in FORTRAN IV computer language for the combined, simultaneous adjustment of photogrammetric and geodetic observations. Tests with both real and fictitious data showed that geodetic measurements such as straight-line distances, astronomic azimuths, horizontal geodetic angles and elevation differences may be used to control an aerotriangulation solution. Program SAPGO uses no auxiliary computer storage device, and can handle a maximum of 40 photos with a 400K core memory. A second computer program called SAPOMFL was developed for the solution of large photo blocks. At the present time, this program can only accept ground coordinates as controls. It features a highly efficient equation solver, a data sorting program to minimize bandwidth, a subprogram for computing initial approximation and a sophisticated data management system to minimize core storage requirement. (Author)

Descriptors :   (*PHOTOGRAMMETRY, TRIANGULATION), (*GEODESICS, TRIANGULATION), AERIAL PHOTOGRAPHY, SURVEYING(GEOGRAPHIC), COMPUTER PROGRAMS

Subject Categories : Cartography and Aerial Photography
      Geodesy

Distribution Statement : APPROVED FOR PUBLIC RELEASE