Accession Number : AD0717105

Title :   MUSAT IV. Volume 1.

Descriptive Note : Final technical rept. Jun 67-Nov 70,

Corporate Author : RAYTHEON CO ALEXANDRIA VA AUTOMETRIC OPERATION

Personal Author(s) : Elassal,Atef A. ; Brewer,Ronald K. ; Gracie,Gordon ; Crombie,Michael A.

Report Date : NOV 1970

Pagination or Media Count : 159

Abstract : An efficient, general analytical triangulation program for frame photography was developed and programmed in FORTRAN V for the UNIVAC 1108 computer. The program features a free formatting technique for ease of data input and offers a wide variety of input/output options to cover the needs of both research and production oriented users. Preprocessing of image coordinates, including corrections for film deformation, radial and tangential lens distortion, and atmospheric refraction, is provided in several forms. Blunder and data editing features are incorporated, an diagnostic and error messages are given with each phase of the triangulation process. A rigorous least squares adjustment with error propagation facility is provided to handle blocks of virtually unlimited size. The mathematical model, based primarily on the collinearity condition, can be constrained by range measurements between any two points in object space and by groups of points having equal elevation, as well as by conventional ground control. Data weighting is provided, whereby input parameter precision estimates dictate the influence the input parameters will have on the least squares adjustment. The solution of the normal system of equations is accomplished with the AUTORAY algorithm. (Author)

Descriptors :   (*PHOTOGRAMMETRY, DATA PROCESSING), LEAST SQUARES METHOD, MATRICES(MATHEMATICS), COMPUTER PROGRAMMING, TRIANGULATION

Subject Categories : Cartography and Aerial Photography
      Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE