ACCURACY OF ANGULAR MEASUREMENT WITH

VARIOUS TARGETS AT DIFFERENT DISTANCES

 

By

 

Abdalla Elsadig Ali^[1]

Dafer Ali Algarni^[2]

 

 

 

ABSTRACT

 

Five commonly used survey targets were tested for angular measurement accuracy using various target-distance-theodolite combinations. The results show that for distances less than 300 m, the geodetic target, the steel nail and the plumb bob string perform fairly equally. For distances more than that, all targets tend to converge to a common accuracy value. The results of the experiment may  therefore appeal to surveyors, civil engineers, and other field measuring scientists who are interested in creating and applying land and/or geographic information systems (LIS/GIS) in their respective disciplines, that cheap and simple mensuration equipment can be used to an advantage to collect survey data for such systems.

 

 

 

Published in the Journal of "Surveying and Land Information Systems", United States of America, 2000, Vol. 60, No. 4, pp. 243-250.