Measurement data error precision evaluation method

The invention relates to the technical field of surveying and mapping, in particular to a measurement data error precision evaluation method. The method comprises the following steps: determining an initial measurement result according to observation data; determining an observation value error according to the observation data and the observation influence parameter; based on the observation value error, determining a variance covariance matrix of the observation value matrix error; determining the uncertainty of the measurement result according to the variance covariance matrix of the observation value matrix error and the relationship between the observation value error and the initial measurement result error; and obtaining a final measurement result according to the initial measurement result and the measurement result uncertainty. The problems that in the prior art, an A-class evaluation mode or a B-class evaluation mode is adopted in the error evaluation process, so that a measurement result is inaccur