Method for measuring equal height of two centering rods and verifying precision of centering rods

Abstract

The invention provides a method for measuring the equal height of two centering rods and verifying the precision of the two centering rods. The method depends on an ultrahigh-precision total station and two high-precision standard points; the ultrahigh-precision total station is erected at any position; one centering rod is placed on the level base point, the total station is shifted to aim at thecenter of the centering rod, at the moment, the total station does not move, the other centering rod is placed at the same position of the level point, the center of the centering rod is checked according to a cross wire of the total station, the height of the centering rods is adjusted, and the front centering rod and the rear centering rod are located at the same height; the two centering rodsare placed on the two leveling points, the two leveling points are subjected to leveling measurement to obtain millimeter-level height difference, the two centering rods are measured through the totalstation to obtain height difference of the two points, the height difference is compared with known data, and the equal-height precision of the centering rods is verified. The problems that an existing method is large in error, the precision of river-crossing leveling measurement is greatly influenced, and the precision of collected data can be possibly reduced to be below the national standard are solved. The invention belongs to the field of surveying and mapping engineering.

Description

technical field [0001] The invention relates to a method for measuring the equal heights of two centering rods and verifying the accuracy thereof, which belongs to the field of surveying and mapping engineering. Background technique [0002] At present, centering rods are widely used in the field of surveying. The instrument can be used in engineering with total stations to obtain plane and elevation data. Centering rods are mostly used for engineering stakeout, terrain data collection, cross-river leveling and other survey operations; now , in the construction of urban rail transit, high-speed railway, and expressway, the project line inevitably crosses the river system, and the conventional elevation reference is used for leveling measurement with an electronic level. At present, the method of obtaining both sides of the river is to use ultra-high-precision total stations, and use the method of free station setup for measurement. Offset with the height of the centering ro...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a method for measuring the equal height of two centering rods and verifying its accuracy, so as to solve the problem that the existing method has large errors and has a great influence on the accuracy of cross-river leveling measurement, and the accuracy of collected data may be reduced to the national standard the following questions