Leveling measuring method

Abstract

The invention provides a leveling survey method adopting the technical proposal that a level gauge is positioned over an arbitrary position near an observation route for observation and reading without attending to the equidistance condition of the foresight and the backsight distances as well as the accumulative value of the foresight and the backsight distances difference when obtaining height reading and distance reading of the scale in the process of adopting the level gauge for measurement. The accuracy of measurement under the condition of equaling to or even exceeding the traditional sight distance symmetry is acquired from adjustment with consideration of the i angle error of the level gauge as unknown quantity in the process of data processing, thereby making the leveling survey easier and quicker. The leveling survey method of the invention has the broad promotion prospect, and can be used in high precision leveling survey such as geodesy and engineering survey.

Description

technical field [0001] The invention belongs to the field of surveying and mapping, in particular to a leveling measurement method. Background technique [0002] In the traditional standard of grade leveling, due to the existence of i-angle error of the leveling instrument, the front and rear sight distances are required to be symmetrical, so as to offset the influence of i-angle error on the measurement results as much as possible. Also due to the unreliability of optical sight distance measurement, it is often necessary to use a measuring rope to control the symmetry of the front and rear sight distances. "National first- and second-class leveling standards GB12897-91" and "National third- and fourth-class leveling standards GB12898-91" have made very strict regulations on the front and rear line-of-sight differences and the accumulation of line-of-sight differences in leveling, as shown in Table 1 . This just makes grade level measurement very complicated and loaded dow...

AI Technical Summary

Problems solved by technology

This makes the grade level measurement very complicated and cumbersome, and the work efficiency is very low

Especially when there are lakes, ravines, buildings, vegetation and other natural environmental influences in the middle of the route to be tested, it is very difficult to set up a level to meet the symmetry of front and rear sight distances.

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