Analytic aerotriangulation: triplets and sub-blocks; including use of auxiliary data: Phase III: Final technical report

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Survey Dept., School of Civil Engineering, Cornell University, 1965 - Photography - 129 pages
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The feasibility of using triplets and sub-blocks as opposed to the conventional stereopairs is investigated. A procedure for triplet aerotriangulation consisting of: (1) triplet relative orientation; (2) triplet assembly; and (3) transformation to ground control has been developed, programmed and tested using FORTRAN language and proven suitable for a 10k computer. The program uses the coplanarity equation for the condition for relative orientation. Both fictitious and real photographic data were tested. Triplets are proven to be much stronger than conventional stereopairs for extending control. A procedure for ninephotograph sub-block aerotriangulation consisting of: (1) sub-block relative orientation and coordinate computation; (2) sub-block assembly for a pair of sub-blocks; and (3) transformation to ground control has been developed, programmed and tested using FORTRAN language with fictitious photography on a 32k electronic computer. The program is based on the colinearity equation and also will perform aerotriangulation of strips using triplets. It requires 60 percent side lap of strips and provides many advantages over a general block triangulation solution. Theoretical developments are presented which allow incorporation of auxiliary exposure station data in the sub-block relative orientation. (Author).

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Contents

SUBBLOCK AEROTRIANGULATION
5
COMPUTER PROGRAMS
67
iv
81

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