Total station measuring coordinate x is the north-south ordinate n, y is the east-west abscissa e, because the total station adopts the Gaussian plane rectangular coordinate system (with the intersection o between the central meridian projection and the equator as the coordinate origin, the central meridian projection as the ordinate X axis, and the north of the X axis is positive; Taking the projection of the equator as the horizontal axis Y axis, and specifying that the Y axis is due east, a Gaussian plane rectangular coordinate system is formed. )
In the mathematical coordinate system, the format of point coordinates is (x, y), and in the geodetic coordinate system, the format of point coordinates is (e, N)E, indicating the east and east coordinates; N represents the transformation of two sets of coordinate systems, north and north. Specify e as y coordinate and n as x coordinate. CAD uses mathematical coordinate system. When inputting points, (x, y) in the design document should be reversed, that is, (y, x).
Extended data:
This represents a three-dimensional coordinate, n represents north, north; E means East, nast; ; The above two are plane coordinates, and some instruments are X and Y; Z is the elevation.
Total station, that is, electronic total station, is a high-tech measuring instrument integrating light, machinery and electricity, and a surveying and mapping instrument system integrating the functions of water collection angle, vertical angle, distance (oblique distance, horizontal distance) and height difference.
Compared with optical theodolite, electronic theodolite uses photoelectric scanning dial instead of optical dial, and uses automatic recording and display reading instead of manual optical micrometer reading, which simplifies angle measurement operation and avoids reading error. Because it can place instruments at one time to complete all the measurement work on the station, it is called total station.
It is widely used in the field of precision engineering survey or deformation monitoring, such as large buildings above ground and underground tunnel construction.
References:
Baidu encyclopedia-total station