Premium
ANALYTICAL AERIAL TRIANGULATION BLOCK ADJUSTMENT; THE DIRECT HEIGHT SOLUTION INCORPORATING TIE‐STRIPS
Author(s) -
Smith A. D. N.,
Miles M. J.,
Verrall P.
Publication year - 1967
Publication title -
the photogrammetric record
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.638
H-Index - 51
eISSN - 1477-9730
pISSN - 0031-868X
DOI - 10.1111/j.1477-9730.1967.tb00884.x
Subject(s) - triangulation , strips , block (permutation group theory) , section (typography) , computer science , plan (archaeology) , algorithm , mathematics , calculus (dental) , geometry , geology , orthodontics , medicine , paleontology , operating system
The historical development of analytical aerial triangulation block adjustment is mentioned by way of introduction. The advantages of separating the plan and height adjustments are given and the observation equations of a typical adjustment section are analysed to show that this convenient practice is justified in normal circumstances. The principles of a direct solution of the normal equations suitable for a moderate‐sized computer, are explained and developed in detail for the height adjustment. The advantages of tie‐strips in the height adjustment are demonstrated and the difficulties which then arise are discussed. An approximate method which overcomes these difficulties is developed. Details of the computer programmes used are given in Appendix B.