Research on the technology for processing errors of photoelectric theodolite based on error design idea
2012
The errors existing in photoelectric theodolite were studied according to the error design idea , that is,the correction of
theodolite errors was achieved by analyzing the effect of errors actively instead of processing the data with error
passively. Aiming at the shafting error, the relationship between different errors was analyzed by the error model based
on coordinate transformation, and the real-time error compensation method based on the normal-reversed measuring
method and levelness auto-detection was supposed. As to the eccentric error of dial, the idea of eccentric residual error
was presented and its influence to measuring precision was studied, then the dynamic compensation model was build, so
the influence of eccentric error of dial to measuring precision can be eliminated. For the centering deviation in the
process of measuring angle, the compensation method based on the error model was supposed, in which the centering
deviation was detected automatically based on computer vision. The above method based on error design idea reduced
the influence to measuring result by software compensation method effectively, and improved the automation degree of
azimuth angle measuring of theodolite, at the same time the precision was not depressed.
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