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Corresponding Author

Abou Halima, Hisham

Subject Area

Civil and Environmental Engineering

Article Type

Original Study

Abstract

The redundancy number is usually used as the internal reliability measure. It is commonly stated in literature that the value of redundancy number ranges between zero and one. This study, however, indicates that the redundancy number may be beyond that range for correlated observations. Therefore, the internal reliability can not correctly be indicated by the redundancy number. A new suitable internal reliability measure is discussed thoroughly. Finally, three numerical examples representing different surveying problems such as, vertical and horizontal geodetic networks as well as theodolite angle observations were given in order to illustrate the app ication land the efficiency or the proposed reliability measure.

Keywords

Correlated observations; Internal reliability. Redundancy number. Marginal detectable error; External reliability; Redundancy matrix, Reliability matrix, ; Reliability number; Internal reliability factor; Absorption factor

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