Premium
A COMPARISON OF SOME BLOCK ADJUSTMENT SYSTEMS IN CURRENT USE
Author(s) -
Smith A. B.
Publication year - 1984
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.1477-9730.1984.tb00504.x
Subject(s) - block (permutation group theory) , clarity , triangulation , block model , relaxation (psychology) , current (fluid) , computer science , algorithm , mathematics , engineering , psychology , social psychology , biochemistry , chemistry , mining engineering , geometry , electrical engineering
Eight aerial triangulation block adjustment systems were tested using two blocks of Ordnance Survey data. The iterative relaxation methods could not cope with the standard patterns of control. Bundle methods, especially with additional parameters, gave significantly better results than model adjustments. Ease of data handling and clarity of output are considered to be more important factors than absolute accuracy in choosing a block adjustment system.