Do you dare to set the direction of the Total Station's targeted Distance Difference?

Yesterday, a buddy asked Lao Wang the following question:Do you dare to set the direction of the Total Station's targeted Distance Difference??

Old Wang's measurement space can help you solve such problems.

In fact, the buddy said that his direction is correct, then you have a distance error, it certainly does not matter. The total station sets the direction, not the distance. The distance is only the check whether the point is damaged, or your instrument is not set incorrectly.

The total station we used previously can only be oriented. Without the coordinate orientation option, we can only calculate the azimuth angle of the Total Station and the rear viewpoint to be oriented.

(There is a small problem here,The azimuth is the direction from the total station to the rear viewpoint or from the rear view point to the total station.. The answer is the former. Just remember one point. The total station is the center, because the point of the Total Station is used to calculate the azimuth of each lofting point when you release the line .)

The point error measured by gps measurement wires is about 3 centimeters. How can we still use them? We also regard them as high-precision Guide wires.

There is a premise that there is a long distance between the two points. If one point is Beijing and the other is Henan, the error between the two points is 1 m. Are their two connections having a big difference in azimuth. Obviously, it can be ignored.

GPS is the truth. Although the accuracy is not very high, if the distance is dropped, the error in the azimuth will be very small. It can also be used.