The present invention relates to the technical field of photoelectric theodolites, and specifically provides a method for solving and compensating a single error of a photoelectric
theodolite. The
sky area is divided into 60 sub-areas by star selection
software, and a star is selected in each sub-area as a reference star, one of the
theodolite points is controlled to point to the reference star, and the
azimuth deviation and elevation deviation corresponding to each reference star are calculated respectively, and an
axis system error pointing model of the electric
theodolite, an
azimuth error equation and an elevation
error equation of the photoelectric theodolite are established, and the
least squares estimate of the
azimuth single error and the
least squares estimate of the elevation single error are solved by the
least squares method, and the reference
stars with large fitting residuals are eliminated and repeatedly iterated to obtain the final single error of the photoelectric theodolite and compensate for it. The method of the present invention effectively reduces the influence of the theoretical position deviation of individual reference
stars on the calculation results, ensures the consistency of the single error in multiple measurement results, and thus improves the compensation accuracy of the single error of the photoelectric theodolite.