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Title: The terrestrial/photogrammetric (TP) technique for the detection and compensation of systematic height errors in block aerial triangulation
Author: Abdel Rahim, Mohammed Mukhtar
ISNI:       0000 0001 3389 4520
Awarding Body: University of Glasgow
Current Institution: University of Glasgow
Date of Award: 1980
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The thesis is concerned with a new technique (the Terrestrial/ Photogrammetric (TP) technique) for the detection and compensation of systematic height errors in block aerial triangulation. This technique improves the height accuracy of such triangulation by reducing the original bridging distance using new bands of corrected photogrammetric tie points as height control, together with the original bands of the terrestrial height control. Various photogrammetric blocks with different characteristics and configurations have been tested in a comprehensive manner. The results show that the TP technique gives consistent results over a wide range of circumstances and that it is a most effective, simple and inexpensive method for the compensation of systematic errors. The technique shows that, in principle, a minimum of only two bands of terrestrial height control points together with an additional terrestrial height check point lying midway between them are enough to obtain the optimum height accuracy. That is to say, the terrestrial heights of only (2n + 3) points will be required to obtain the optimum height accuracy after the application of the TP technique, in any rectangular shaped photogrammetric block of parallel strips, where n is the number of these strips. The TP method promises therefore to have a great impact on aerial triangulation practice, since the requirements for ground control are less than any other triangulation method devised up till now - with a consequent economy in the overall provision of such control.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: Geomagnetism