Guidelines for ensuring the reliability of cameral evaluation of the authenticity of as-built survey maps

Aim. The paper aims to demonstrate a unique method of evaluating the authenticity of as-built survey maps using Microsoft Excel and verification results. The authenticity of the horizontal and vertical deviations of building structures documented in geodetic designs is evaluated by comparing the diagram of control point value distribution with a normal probability plot (Gaussian distribution). The verification of the developed method presented in the paper is based on a quantile plot, as well as calculations using three different methods involving the analysis of the parameters and statistical characteristics of the sought sample.

Methods. The paper used the cameral method of evaluating as-built survey maps, as well as methods of mathematical statistics for verifying the research findings.

Results. The hypothesis of normal distribution of the sample of control point deviations of the examined building structures was verified and confirmed using the following methods: quantile plotting; verification of the three sigma rule; analysis of the index of skewness and kurtosis; verification of the hypothesis of normal distribution per Pearson’s chi-squared test. That allows ensuring the reliability and verifiability of the results as regards the registration control of as-built drawings. The paper also substantiates the practical applicability of the method of evaluating the authenticity of asbuilt survey maps developed by the authors.

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