The Research Of The Theory And The Method Of GPS Surveying Uncertainty Based On Fuzzy Set

Through the detailed practice and the data analysis, this dissertation had studiedthe insufficiency of the classical theory of error when appraises the GPS survey,showed clearly that the measurement errors of GPS under the influence of uncertainand fuzzy randomness, thus has caused the fuzziness of measurement errors and that ofuncertainty degree. On the basis of studying the fuzzy randomness of measurementuncertainty and the corresponding fuzzy compatibility theory, this dissertation studiedand established the measurement uncertainty with distribution function of uncertainty,for expressing the level of uncertainty or credibility of the observed values, and carriedout the analysis to the magnitude of the error of GPS, the dispersion degree, thecondition of systematic error and accidental error. This dissertation has studiedanalysis indices and measuring standard for rational measurement uncertainty of GPS.