Method for measuring hidden point position coordinates by utilizing total-station instrument

Abstract

The invention discloses a method for measuring hidden point position coordinates by utilizing a total-station instrument, comprising the following steps of: mounting an auxiliary measuring device, erecting the total-station instrument on a working point station, and measuring to obtain coordinates of points A and B; recording information; calculating an azimuth angle of AB, namely alphaAB; calculating the azimuth angle of AO', namely alphaAO'; solving the coordinates of a hidden point; calculating according to a distance between two points A and O', namely SAO', and the azimuth angle alphaAO'of AO' to obtain coordinate increment; solving the coordinates of the hidden point O at a projective point O' in the horizontal plane; and obtaining the coordinates of the hidden point O according toa projection relation formula. According to the method disclosed by the invention, a local polar coordinate system is built near an impassable viewpoint, parameters of the local polar coordinate system are acquired by measurement by establishing a calculation relationship between the impassable viewpoint and a measuring point in the total-station instrument measurement, and polar coordinates of the impassable viewpoint in the local polar coordinate system are measured, thus impassable view point position coordinates are rapidly determined.

Description

technical field [0001] The invention belongs to the field of engineering surveying, in particular to a method for measuring the coordinates of a point position of a blind point by using a total station. Background technique [0002] Total station, namely Electronic Total Station, is a high-tech measuring instrument integrating light, machine and electricity. ), height difference measurement function in one surveying and mapping instrument system. It is called a total station because it can complete all the measurement work on the station once the instrument is installed. [0003] The mathematical basis for measuring coordinates of the total station is: by assuming the station of the instrument and the orientation point of the backsight orientation, a station coordinate system centered on the station is established, and at the same time, by measuring the position of the foresight point in the station coordinate system parameters, the coordinates XYZ of the foresight point c...

AI Technical Summary

Problems solved by technology

However, in fact, this condition is not easy to realize when measuring in forests or urban buildings. In total station measurement, hidden points (unreachable viewpoints) are often encountered. These points are generally located at the L-shaped corners of high-rise buildings, Lush vegetation etc.

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